Hear Back PRO User Guide
Contents
1. ELECTROMAGNETIC COMPATIBILITY This device complies with part 15 of the FCC Rules and the Product Specifications noted on the Declaration of Conformity Operation is subject to the following two conditions e this device may not cause harmful interference and e this device must accept any interference received including interference that may cause undesired operation Operation of this unit within significant electromagnetic fields should be avoided e use only shielded interconnecting cables WARNING The Hub unit produces heat while powered and therefore requires adequate ventilation to ensure the internal temperature stays within maximum operating temperatures 0 C to 54 5 or 32 F to 130 F Please ensure that these clearances are met e 0 85 inches of clearance on either side of Hub e 1 of clearance in front of Hub e 11 inches of clearance in back of Hub Care should be taken so that the Mixer s ventilation holes remain unblocked allowing adequate airflow through both sides of the unit If you want to dispose this product do not mix it with general household waste There is a separate collection system for used electronic products in accordance with legislation that requires proper treatment recovery and recycling Private household in the 25 member states of the EU in Switzerland and Norway may return their used electronic products free of charge to designated collection facilities or to a retail2. balanced 2 connections left mono right 24 dBu mixed output TRS 1 8 unbalanced stereo and XLR balanced mono with 15 volts phantom power For future digital or analog input output expansion capabilities or side car add on 9 5 241 mm H x 5 95 152 mm W x 2 71 7 62 mm D 1 6 Ib 0 72 kg Standard mic stand 5 8 27 threads per inch or desk mounted 1 75 45 mm H x 19 482 mm W x 8 5 216 mm D 6 3 lb 2 8 kg Standard rack mount 1 RU 48VDC 150 Watts each external power supply powers up to 16 Mixers Power over Ethernet PoE 36 52 volts DC 15 Watts max provided by Hub through CAT6 network cabling Input Voltage 90VAC to 264VAC 50 60Hz CAT6 cables used for Mixers or for HBus can be run up to 500 feet in ideal conditions one piece of solid conductor CAT6 with no breaks or couplings The more breaks connections couplings in a cable run the more limited this distance will be Poor quality cabling will also limit the maximum distance Note 0 dBu 0 775 Vrms Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better Specifications and features subject to change without notice Hub is capable of powering up to 32 Mixers with an additional power supply Hear Back PRO User Guide 7 TROUBLESHOOTING AND OPERATING TIPS Note Some problems require you to refer to the A B C D error code LEDs below the HBus ports back of Hub
3. e The ground and power rails of the Mixer are totally isolated from the Hub meaning no more ground loops to worry about e This system is compatible with most off the shelf Gigabit POE network switches Network switch must be POE 30 watts because the Mixer may otherwise periodically lose power at high volumes due to it sourcing slightly more power than standard POE switches provide 15 watts Since a constant stream of data is required for audio not all network switches will work with this system due to a function known as EEE Energy Efficient Ethernet which restricts the free flow of data sending bursts of data instead e Mixer faceplate can be labeled by using a Dry Erase marker label maker or by writing a removable Mixer overlay Please note that using permanent markers results in permanent labels Network Switches known to WORK Network Switches known to NOT work with the Hear Back PRO with the Hear Back PRO D Link DGS 1008G e Netgear GS105 e Cisco 300 Series e Netgear GS108 If you re unsure if EEE is enabled on your Gigabit POE network switch contact the switch s manufacturer FCC STATEMENT Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a commercial installation This equipment generates uses and can radiate
4. Preset Button Master Control Knob Volume Aux 2 1 o 6 1 1 10 Aux Input Button Pan Button Auxiliary 1 8 Stereo Unbalanced Audio Input Auxiliary Input Switch Auxiliary Balanced XLR Microphone Input with 15V Phantom Power 1 4 Left Mono and Right Outputs 1 8 TRS Headphone Output 1 4 TRS Headphone Output Gigabit Ethernet GbE Connection with PoE Power over Ethernet Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better Hear Back PRO User Guide 5 HEAR BACK PRO CONNECTING AND CALIBRATION 1 Connect the appropriate input s as shown in the 4 hook up diagram below and select the desired input using the front panel switch Connect Hear Back PRO Mixers to the network card outputs using CAT6 cables and set all Mixer channel and master volume levels to 0 Connect the headphones in ear monitors and or line outputs for connecting to wireless in ear systems powered monitors or other devices requiring line level inputs 2 Turn on Hub power 5 3 Adjust the level at the input source DAW mixer etc until the red clip LED s on the Hub just come on and then reduce the levels on the input source until you have a green LED NOTE Adjust
5. 192 176 4 KHz 256 channels at 96 88 2 KHz or 512 channels at 48 44 1 KHz 48 volt Power Over Ethernet supply Port for redundant power supply or to power more than 16 Mixers USB port for firmware upgrades and future features Error indicating logo glows red should a fault arise ANALOG INPUT CARD Analog inputs are fully balanced and are connected using a standard DA 88 style Analog cable such as the Hear Back Analog cable DB25 cable pin outs are wired as shown below Axcaution Use only DA 88 Analog Do not use TDIF Pin out for TASCAM DB25 8 Channel Balanced Connector 5 G 1 I 60 50 BO 20 00 90 50 C COLD GROUND SELECTING SAMPLE RATE The Analog input card lets users select the digital sampling rate they wish to convert their analog audio to via three jumpers located directly under the Hear Technologies logo on the Analog card circuit board Jumper positions can be configured as shown below where the blacked out boxes represent an electrical connection between pins A B C A 44 1 kHz 48 kHz 88 2 kHz A o o 96 kHz 176 4 kHz 192 kHz default configuration 10dB PAD The Analog input card provides 2 jumpers per chan
6. Analog Hub HBus In Out Hub USB Port Hub Card Slots 4x Mixer to Hub Connection Mixer Headphone Out Mixer Line Out Mixer Max Output Level Analog Mixer Aux Input Mixer Card Slot Physical Mixer Size Unit Weight Mounting Physical Hub Size Unit Weight Mounting Power Hub Power Requirements Mixer Power Requirements External Power Supply Requirements Cabling Mixers and HBus 1 8 Stereo unbalanced 10K ohms typical 0 dBu optimal 18 dBu max XLR Mono balanced 150 ohms typical 150 Hz high pass 42 dBu optimal 30 dBu max THD less than 0 01 THD less than 0 1 1 2W 1 5W THD AT 8 Ohms 0 015 typical 1 6W 1 8W 2 0W 2 2W 1 8W 2 0 W 1 5W 1 6W 11W 1 2 mW 500 mW 650 mW 220 mW 250 mW Typically less than 0 03 20 Hz to 20 KHz 0 15 dB 0 004 typical at 1 KHz 15 dBu 0 008 typical 20 Hz 20 KHz 4 dBu 0 02 typical at 4 dBu 60 Hz 7 KHz Less than 93 dBu 1 KHz Less than 0 38 mSec 192 kHz sample rate 93 dBu 192 kHz sample rate 117 dB typical 16 Balanced inputs on 2x DB 25 female DA 88 pinout 2dBu with analog card pad jumpers populated 12dBu with jumpers removed 8 pin RJ45 jack standard Ethernet pinout USB 2 0 for firmware updates Each slot can accept an analog or digital input card output card or 8 port Mixer network card 8 pin RJ45 jack 8x Mixer connections per network 1x TRS 1 4 and 1x 1 8 unbalanced stereo TRS 1 4
7. Mixer Tilt Adapter is for all Hear Back Mixers adding a ball joint with 5 8 27 male threading to standard stand to get the perfect angle with 360 rotation and 180 tilt MICROPHONE STAND ADAPTER Mount the Hear Back Mixer to the side of any mic stand or standard music stand using the MSA Mic Stand Adapter This clamp on adjustable width bracket attaches to the built in 5 8 threaded socket located on the back of the Mixer 180 supercardioid pattern CABLES TOTE BACK This soft side nylon carrying case is perfect for carrying 8 Hear Back Mixers or 4 Mixers and 1 Hub Adjustable Hear Technologies offers a variety of quolity cables that work with dividers allow you the freedom to customize the compartments your system including CAT5e CAT6 Optical Insert and Analog DA 88 style cables CAT5 amp CAT6 OPTICAL INSERT ANALOG Hear Back PRO User Guide 9 hear back mix back freedom back OTHER HEAR TECHNOLOGIES PRODUCTS e Unlimited system size Local control of 8 audio channels stereo mix and six more me s ADAT analog HearBus inputs are switch selectable from front panel Built in DSP Limiter with threshold adjustment Master Volume Stereo AUX In Balanced Line Outputs Built in Mic Stand Mount Standard CAT5e power e Affordable 16 x 12 x 2 x 2 monitor mixer 16 Mic Line inputs each with passive split and 2 stereo and 12 mono lev
8. No Audio Output Hub Logo is solid RED Hub Logo is blinking RED Hub Logo is PURPLE Hub Logo OFF Mixer logo is solid RED e Verify the Hub is powered on e Check input connections e Make sure input selector switch is in the proper position for your audio source HBus input A slots 1 amp 2 or input B slots 3 amp 4 e Verify the status indicating logo on both the Hub and Mixer are both BLUE e Check your headphones wireless transmitters receivers monitor amplifiers etc to verify they are functioning properly Refer to the A B C D error code LEDs below the HBus ports on back of Hub If no error code LED is lit o No clock is present If using an Analog Input card Verify the input selector switch is in the correct position Verify an Analog Input card is present in either slot 1 for input A or slot 3 for input B If the problem still persists please call customer service o If using any Digital Input card Verify the digital source is functioning correctly powered and sending clock Verify the input selector switch is in the correct position Verify the Digital Input card is present in either slot 1 for input A or slot 3 for input B If the problem still persists please call customer service e f error code LED A B or A amp B are lit An internal problem is present Please call customer service e If error code LED C is lit o No firmware file can be found on the inter
9. balance the gain PAN OPERATION To control panning of channels press the PAN button The PAN button and channel knob LEDs will turn green to indicate that the channel knobs now control panning position of the audio within the stereo field To return to volume control press the PAN button again or wait 30 seconds from the last adjustment for the system to automatically return to volume control STEREO LINK OPERATION Each audio channel comes from a mono source and is therefore center panned by default To quickly hard pan two channels left and right to create a stereo pair hold the PAN button for 3 seconds to enter the stereo link control interface The PAN button and channel knobs will blink green Move a knob to toggle that channel and its adjacent channel between mono and stereo linked Notice the panning position jump from center panned to hard panned This operation can only be performed on adjacent pairs of channels Therefore channel 1 can only be linked with channel 2 channel 3 with channel 4 and so on Press the PAN button again to exit the stereo link control interface or wait 30 seconds from the last adjustment for the system to automatically return to volume control Upon linking channels the volume of the right channel is set according to the volume of the left channel Volume adjustments to either stereo linked channel now effects both channels in unison Balanced mono stereo line level outputs e Store up to 4
10. indicating logo glows red to indicate a problem and flashes red when headphone amplifier temperature reaches 100 C 212 F e Volume panning stereo link control of all 16 channels of audio MIXER CONSTRUCTION The Hear Back PRO is constructed of UV stabilized ABS and has a built in mic stand mount The cable strain relief channel molded into the Mixer greatly reduces stress on the CAT6 cable connectors and the Mixer RJ45 connector STATUS INDICATING MIXER LOGO The illuminated logo serves as an indicator for several purposes Under normal conditions the logo will be blue indicating digital audio packets are being received A purple logo indicates audio packets are being dropped and a red logo indicates no valid packets are being received If the logo is blinking red this indicates the headphone amplifier has overheated Check the troubleshooting section if any color other than a blue logo occurs VOLUME Each channel knob by default controls the volume of its respective channel within the mix The master knob by default controls the volume of the overall mix Volume operation is indicated by blue LEDs Volume scales from 0 to 100 left to right respectively MASTER VOLUME The master volume is used to set the volume of the headphones and the line outputs When using the line outputs in conjunction with the headphones optimize the mix for the headphones and then adjust the device connected to the line outputs to
11. power supply serves as redundant power to slots 3 and 4 in the case that one power supply were to fail A yellow LED under each power port indicates the presence of 48 volts even when the Hub is powered off The network card s RJ45 pin outs are the same as standard gigabit Ethernet RJ45 pin outs as shown below Suggested Termination Pin Pair Description Color Scheme 568B Power over Ethernet PoE 48v Power over Ethernet PoE 48v Power over Ethernet PoE GND Os he oo B Power over Ethernet PoE GND f O sjoel fm Gigabit PoE uses a transformer on the data pairs to allow power and data to share the same pairs similar to how phantom power works on microphones Color Scheme 568A is also acceptable but do not crossover from 568A to 568B Each Mixer output on the network card has a power supervisor circuit that will only power the port if a valid PoE device is detected In the event of a shorted cable or broken Mixer the power supervisor circuit will disconnect the load permitting other Mixers to function while protecting the power supply from the faulty output Daisy chain via HBus for very large systems e Quiet temperature controlled fan only runs when internal temperature reaches 43 C or 110 F 1 RU chassis e Modular I O card slot configurable mainframe e Gigabit Ethernet network fabric with enough bandwidth to support up to 128 channels of audio at
12. radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help CE FC Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better iv Hear Back PRO User Guide CONTENTS safety instructions table of contents system description hear back PRO hub hub features hub I O cards network and analog input hbus input selector switch input metering status indicating hub logo internal fan dual power ports detail diagram hear back PRO mixer mixer features mixer construction status indicating mixer logo volume pan operation stereo link operation aux input preset operation intercom input signal display settings reset operation line outputs headphone amplifier detail diagram connect
13. se premunir contre les expositions aux pressions acoustiques elevees potentiellement dangeureuses aux personnes exposees aux equipements capables de delivrer de telles puissances tels ce systeme d amplification en fonctionnement de proteger l appareil auditif ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR ATTENTION AFIN DE LIMITER LE RISQUE DE CHO ELECTRIQUE NE PAS ENLEVER LE CHASSIS NE CONTIENT PAS DE PIECES POUVANT ETRE REPAREE PAR L UTILISATEUR CONFIER LE SERVICE APRES VENTE AUX REPARATEURS CE SYMBOLE A POUR BUT D AVERTIR L UTILISATEUR DE LA PRESENCE DE VOLTAGE DANGEREUX NON ISOLE A L INTERIEUR DE CE PRODUIT QUI PEUT ETRE DE PUISSANCE SUFFISAMMENT IMPORTANTE POUR PROVOQUER UN CHOC ELECTRIQUE AUX PERSONNES CE SYMBOLE A POUR BUT D AVERTIR L UTILISATEUR DE LA PRESENCE D INSTRUCTIONS D UTILISATION ET DE MAINTENANCE DANS LES DOCUMENTS FOURNIS AVEC CE PRODUIT IMPORTANTES INSTRUCTIONS DE SECURITE a Lire avec attention toutes les recommandations et pr cautions d emploi avant d utiliser ce produit 2 Toutes les recommandations et pr cautions d emploi doivent tre conserv es afin de pouvoir s y reporter si n cessaire 3 Lire et comprendre tous les avertissements num r s dans les pr cautions d emploi 4 Suivre toutes les pr cautions d emploi pour utiliser ce produit 5 Ce produit ne doit pas tre utilis pr s d eau comme par exemple baignoires viers piscine sous sol humides e
14. storable Mixer overlays for an unlimited number of presets Instantly store and recall presets from memory with the push of a button Most recent configuration is saved even after power down Hear Back PRO User Guide 1 HUB FEATURES e Three switch selectable 16 channel input sources Input A Slots 1 amp 2 Input B Slots 3 amp 4 HBus 24 bit Delta Sigma A D converters Six user selectable sample rates indicated by LEDs 44 1 kHz 48 kHz 88 2 kHz 96 kHz 176 4 kHz and 192 kHz Less than 25 milliseconds total system delay latency at 192 kHz 16 RGB LEDs intuitively display signal peak levels for channel metering Standard CAT6 delivers power and signals to Mixers HUB I O CARDS NETWORK CARD A network card must first be inserted into the Hub s card slot 4 to transmit power ground and audio to Mixers via standard CAT6 cables Each network card can support use of up to eight Mixers simultaneously Additional Mixers can be used by inserting a second third or even fourth network card into card slots 3 2 and 1 respectively However to power more than two network cards or more than 16 Mixers an additional power supply is required The first two network cards in slots 3 and 4 will receive power if a power supply is present in either power port the second two network cards in slots 1 and 2 will only receive power if a power supply is present in both power ports Additionally a second
15. HOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE CHASSIS NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR THIS SYMBOL IS INTENDED ALERT THE USER THE PRESENCE OF NON INSULATED DANGEROUS VOLTAGE WITHIN THE PRODUCT S ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE PRESENCE OF A IMPORTANT OPERATING AND MAINTENANCE SERVICING INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE UNIT IMPORTANT SAFETY INSTRUCTIONS Read all safety and operating instructions before using this product 2 All safety and operating instructions should be kept for future reference 3 Read and understand all warnings listed on the operating instructions 4 Follow all operating instructions to operate this product 5 This product should not be used near water i e bathtub sink swimming pool wet basement etc 11 12 20 Only use dry cloth to clean this product Do not block any ventilation openings It should not be placed flat against a wall or placed in a built in enclosure that will impede the flow of cooling air Do not install this product near any heat sources such as radiators heat registers stove or other apparatus including heat producing amplifiers that produce heat Do
16. NT PANEL INPUT METERING The Hub features a unique input metering circuit consisting of one LED for each of the 16 input channels Each LED provides four visual levels that correspond color to signal strength in dBu Signal Strength 36dBu to 18dBu RMS 18 08 to OdBu RMS 0dBu to 17 5 dBu 17 5 dBu clip STATUS INDICATING HUB LOGO The illuminated logo serves as an indicator for several purposes Under normal conditions the logo will be blue indicating valid clock is present could be internal or external A red logo indicates no valid clock is present If the logo is blinking red this typically indicates a temperature problem but could indicate something else Refer to troubleshooting section for detailed information INTERNAL FAN The internal temperature controlled fan operates whenever the internal temperature reaches 43 C or 110 F In studio or indoor the fan should rarely come on The Hub should be rack mounted away from high temperature devices such as power amplifiers Please ensure our recommended clearances listed at the beginning of this manual are met DUAL POWER PORTS The Hub supports two external power supplies The second power supply serves two purposes to provide redundancy in case of power failure and to power more than two network cards greater than 16 Mixers in a single Hub On the front of the Hub an LED directly above the power switch will be lit if two power supplies are present Th
17. OM To completely disable the intercom function on a Mixer hold the INTERCOM button while plugging in the CAT6 cable until the PAN AUX and INTERCOM buttons blink rapidly to indicate you have entered the configuration interface Pressing the INTERCOM button will now toggle the intercom on and off To save the settings press and hold the INTERCOM button until the Mixer reboots INPUT SIGNAL DISPLAY To easily see which channels have signal present without having to turn up each channel individually press and hold the AUX button until the AUX button begins blinking rapidly If a signal is detected on a channel the channel s LEDs will light up Additionally the master knob s LEDs act as an overall RMS meter showing you how much headroom is available This makes it easy to see how close the Mixer is to clipping Note that you are still able to adjust channel and master volume in DETAIL DIAGRAM TOP PANEL hear back PRO this mode however the level indicator will only be shown briefly after making an adjustment before returning to displaying input signal activity Press the AUX button again to exit the input signal display mode SETTINGS RESET To quickly reset all volume to 0 unlink all stereo linked channels and move any panning back to center position simultaneously press and hold the PAN and AUX button for 1 second until all of the channel knob and master knob s LEDs blink This restores the current session settings b
18. ack to its default blank slate position but keeps all saved presets intact LINE OUTPUTS Two balanced 1 4 inch TRS line outputs are provided The left operates as a mono output for sub woofers and mono devices if nothing is plugged into the right line output When a 1 4 inch plug is inserted into the right output the line outputs operate in a normal stereo mode The line outputs may be used simultaneously with the headphone outputs and are both controlled with the master volume knob In the event of ground loops when connecting the Mixer line outputs to other devices that have an earth ground it may become necessary to lift the shield at the Mixer outputs A NEVER lift or disconnect the AC safety ground of any device HEADPHONE AMPLIFIER The headphone amplifier outputs are paralleled outputs When using multiple headsets the total impedance should not go below 16 ohms The headphone amplifiers are very powerful and can easily damage in ear transducers headphones and your hearing exercise great care in adjusting the master volume At 32 ohms the amplifier is capable of sustaining 2 watts of power per ear The amplifiers are short circuit protected and will cause the status indicator logo to blink red if overheated LED Status Indicator LED Level Indicators Volume Pan Control Knob for Each Audio Channel 3 000 or Po Intercom Button
19. an be daisy chained together allowing for truly unlimited system expansion The standard Hub included in the 4 pack comes pre loaded with one Network Card and two 8 channel Analog Input Cards which can accept input signals from an audio mixer via auxiliary matrix monitor and or direct outputs Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better hear back PRO ADVANTAGES FEATURES Side mounted card slot on Mixer for future expansion Large master knob controls overall main mix AUX and intercom levels independently Volume and panning control of all 16 channels Direct and immediate visual feedback of all 16 channels Up to 8 pairs of stereo linked channels Support for sampling rates up to 192 kHz Selectable XLR or 1 8 Mixer AUX input Built in intercom broadcasts the AUX source mic player click etc Intercom auto adjusts its own level so even the quietest message never goes unheard Modular I O Hub card system lets you customize the system to match your configuration and can adapt to your needs Supports secondary power supply to provide redundancy and power to up to 32 Mixers USB port on Hub makes updating firmware for future features and upgrades a simple drag and drop operation Status indicating logos on Hub and Mixers make it easy to detect and diagnose problems should they arise Write session info and channel settings on
20. c pr caution l ensemble chariot appareil afin d viter les dommages d un renversement D brancher cet appareil lors d orages ou s il n est pas utilis pendant une longue p riode Des pr cautions doivent tre prises afin qu aucun objet ne tombe et qu aucun liquide ne se r pande l int rieur de l appareil par les orifics de ventilation ou n importe quelle autre ouverture Pour toutes interventions techniques s adresser un technicien qualifi L intervention technique est n cessaire lorsque l appareil t endommag de n importe quelle fa on comme par exemple si le cordon secteur ou sa fiche sont d t rior s si du liquide a coul ou si des objets sont tomb s l int rieur de l appareil si l appareil a t expos la pluie ou l humidit s il ne fonctionne pas normalement ou s il est tomb ATTENTION Pour r duire le risque d incendie ou de choc electrique ne pas exposer l appareil la pluie ou l humidit L appareil sera reli un socle principal d lectricit muni d une mise terre protectrice Le cordon d alimentation est utilis e comme dispositif de d branchement Il restera ais ment fonctionnelle et ne devrait pas tre obstru pendant l utilisation pr vue AVERTISSEMENT Pour raison de s curit cet appareil doit tre solidement fix un rack selon les instructions d installation Instruction d installation d taill e l int rieur du manuel d utilisateur
21. ch making a home run from Hub to Mixer to verify this is the problem If so try a known good network switch from the list at the beginning of the Hear Back PRO User Guide Internal headphone circuit is overheating o Check to verify headphone load is stereo not mono Verify 1 4 inch and or 1 8 inch plug is tip ring sleeve TRS not tip sleeve TS Look for shorted cables o Verify total load is not below 8 ohms per channel Wire TRS outputs using only black ring and red tip wires Disconnect shield at the Mixer and terminate at receiving end only For unbalanced outputs wire the ring black to the receiving end sleeve and tie the shield at the receiving end only Connect the tip red to the tip at the receiving end Verify the source mixer DAW etc has these outputs panned hard left and right o The pan control of the source determines the stereo spread The fan only runs when power supply temperature reaches 43 C or 110 F If you need further assistance feel free to contact Hear Technologies technical support by phone at 1 256 922 1200 or visit our web site at http www HearTechnologies com SYSTEM ACCESSORIES AM12 AMBIENT MICROPHONE 12 inch condenser gooseneck mic with super cardioid pattern for use with Hear Back PRO Mixer as an ambient or intercom microphone The AM12 features 15 volt phantom power 30Hz 16kHz frequency response and 40db sensitivity MIXER TILT ADAPTER The
22. d conductor CAT6 with no breaks or couplings Utilizing proper punch down and the correct RJ 45 connectors is key The more breaks connections couplings in a cable run the more limited this distance will be Poor quality cabling will also limit the maximum distance Running CAT6 cables alongside AC cables florescent light fixtures or computer network wiring will also limit the maximum distance It is always preferred to run the Hear Back PRO CAT6 cabling by itself away from other cabling ALL cabling should be electrically tested before use Contact an expert network professional for assistance with wiring installation Troubleshooting and Operating Tips continued on page 9 Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better 8 Hear Back PRO User Guide Mixer Logo is PURPLE Mixer Logo flashes RED When connect a line level device to the Mixer line outputs hear a buzz When link two mono channels the stereo spread is incorrect The fan does not operate Mixer is not receiving all audio packets o Verify Hear Back network is not accidentally connected to a data network Do not share the Hear Back PRO network with any other devices o Verify all off the shelf switches used are indeed rated for gigabit speeds o If using an off the shelf network switch it might utilize a function known as EEE Energy Efficient Ethernet Attempt to bypass the network swit
23. e voltages lack of proper maintenance natural disasters acts of God or unauthorized modifications repairs or any alterations done without the expressed The following are registered trademarks of Hear Technologies written consent by Hear Technologies Hear Technologies shall not be liable for any loss of use of the equipment or consequential damages including damages to other parts of the installation in which the equipment is a part Hear Technologies does not make any warranty express or implied other than the warranty contained herein No agent representative or employee has the authority to increase or alter the liability obligations and terms of this warranty or sale of the equipment NOTE It is strongly recommended that any equipment returned to Hear Technologies be properly packaged and insured for its full value in case of loss handling or shipping damage Hear Technologies shall not be responsible for damage or loss of equipment during shipment Hear Technologies Hear Back Control Your Mix Talk Back Extreme Extender Hearbuds HearBus and the Jack logo All names and marks of other companies belong to those respective companies Hear Back PRO User Guide 11 HEAR TECHNOLOGIES 991Discovery Drive Huntsville AL 35806 Phone 1 256 922 1200 Fax 1 256 922 1221 www HearTechnologies com 2015 Hear Technologies 03 2015
24. el controls 16 master outputs each available as analog ADAT and HearBus Pin 1 lift and Mic phantom power switches Dual switch selectable effects sends Stereo Aux inputs Channel Inserts Four band EQ with dual sweepable mids Talkback with intercom and optional remote control High quality UHF Wireless Stereo In Ear Monitor system tack Available in UA 584 608 MHz and UB 655 679 MHz bands ear 120 digitally selectable UHF channels Back lit LCD display of frequency audio level group and channel Wireless stereo belt pack allows freedom to move about the stage Batteries included 10 Hear Back PRO User Guide NOTES LIMITED WARRANTY Hear Technologies warrants the equipment against defects in materials and labor for a period of one year from the original date of purchase The duration of this warranty is limited to claims made to Hear Technologies Within the periods stated with respect to parts and labor from the date of purchase During the warranty period defective equipment will be replaced or repaired to the general condition as received at the discretion of Hear Technologies All transportation is the responsibility of the purchaser or owner Equipment should be shipped in the original shipping box This warranty applies only to defects in materials and workmanship and does not cover failure or damage due to shipping loss or damage abuse misuse misapplication incorrect or varying power lin
25. er if you purchase a similar new one For countries not mentioned above please contact your local authorities for a correct method of disposal By doing so you will ensure that your disposed product under goes the necessary treatment recovery and recycling and thus prevent potential negative effects on the environment and human health DECLARATION OF CONFORMITY Manufacturer s Name Hear Technologies Supplementary Information Manufacturer s Address 991 Discovery Dr The product herewith complies with the requirements of the Huntsville AL 35806 USA Low Voltage Directive 2006 95 EC Declares that the product aire ees 0 irective Product Name Hear Back PRO WEEE Directive 2002 96 EC Product Option All requires Class II power adapter EC Regulation 278 2009 that conforms to the requirements of With regard to Directive 2005 32 EC and EC Regulation EN60065 EN60742 or equivalent 1275 2008 of 17 December 2008 this product is designed Conforms to the following Product Specifications produced and classified as Professional Audio Equipment Safety IEC 60065 01 Amd 1 and thus is exempt from this Directive EMC EN 55022 2010 Nason Tackett 55024 2010 Senior Design Engineer Hear Technologies FCC Part 15 991 Discovery Drive Huntsville AL 35806 USA Date August 15 2014 Hear Back PRO User Guide iii FEW NOTES ABOUT THE SYSTEM Do not share the network with any other devices High quality low latency audio requir
26. ered off If the yellow LED is not lit o Verify the external power supply is the unit provided by Hear Technologies o Replace external supply with known good unit No audio data is being received If an off the shelf gigabit switch is being used the Mixer may not be seeing the Hub clock Attempt to bypass the network switch making a home run from Hub to Mixer to verify this is the problem if so try a known good network switch from the list at the beginning of the Hear Back PRO User Guide o Check the orange and green LEDs on the Ethernet port of the Mixer and ensure that you see a solid lit orange LED and a blinking green LED The lit orange LED indicates that a gigabit Ethernet link is established and the blinking green LED indicates data is being received If the orange LED is not lit or it lights intermittently there is a problem with the cabling between the Mixer and the Hub To verify this use a known good short Ethernet cable to plug the Mixer directly into the Hub If the problem still occurs contact our technical support department If the mixer works with the short piece of known good Ethernet cable investigate the cable between the Hub and the Mixer location CAT6 cables used for HBus or going to PRO mixers can be run 100 meters 328 feet with no problems Note due to advanced internal termination techniques cables used with the PRO series can be run up to 500 feet in ideal conditions one piece of soli
27. es a constant stream of large amounts of data therefore other devices on the same network could compromise the quality of the audio e system will not link at 10 100 Mbps as it is designed to work at gigabit speeds e The system is designed to work with suitable CAT6 cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better Note using low quality cables may result in the Mixers refusing to link with the Hub e CAT6 cables used for HBus or going to PRO Mixers be run 100 meters 328 feet with no problems Note due to advanced internal termination techniques cables used with the PRO series can be run up to 500 feet in ideal conditions one piece of solid conductor CAT6 with no breaks or couplings Utilizing proper punch down and the correct RJ 45 connectors is key The more breaks connections couplings in a cable run the more limited this distance will be Poor quality cabling will also limit the maximum distance Running CAT6 cables alongside AC cables florescent light fixtures or computer network wiring will also limit the maximum distance It is always preferred to run the Hear Back PRO CAT6 cabling by itself away from other cabling ALL cabling should be electrically tested before use Contact an expert network professional for assistance with wiring installation Don t use those old gray flat telephone cables ISDN cables as those are not gigabit Ethernet cables
28. headphones to extreme levels that can damage your HEARING e ALWAYS turn down the Mixer Master volume down before putting on in ear headsets or headphones Mixer Cables Up to 500 ft Channels 1 8 Channels 9 16 Sub Woofer _ our optional i rour Mics aE a aae 2 J Processors o Analog Cable 5 ea Do 25 3 Powered amp a Do 8x Wedge Monitors _ a 5 Bo ZO Keyboard z 2 Analog Cable 22226 peakers ee PRESS Ear Buds or Headphones Drummer s Monitor Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better 6 Hear Back PRO User Guide SESS oe TECHNICAL SPECIFICATIONS Mixer Aux Input Line Input Configuration Impedance Line Input Level Mic Input Configuration Impedance Mic Input Level Mixer Headphone Power Load Impedance 8 Ohms 16 Ohms 25 Ohms 32 Ohms 50 Ohms 100 Ohms 200 Ohms 600 Ohms Inter Modulation Distortion Mixer Line Output Frequency Response THD N Inter Modulation Distortion Crosstalk Propagation Delay System Noise Performance Noise A Weighted Dynamic Range System I O Hub Line In Analog Hub Maximum Input Level
29. hear back PRO csovos csovos o O O O 5 e o o 500e soooe EETA EEE o O O O l O 5 T T 3 0 00200 hear TECHNOLOGIES PAN AUX hear back PRO hear back PRO 16 CHANNEL PERSONAL MIXER SYSTEM user guide ENGLISH Danger Exposure to extremely high noise levels may cause a permanent hearing loss Individuals vary considerably to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient time The U S Government s Occupational Safety and Health Administration OSHA has specified the following permissible noise level exposures DURATION PER DAY HOURS SOUND LEVEL dB 8 6 4 3 2 1 90 93 95 97 100 103 According to OSHA any exposure in the above permissible limits could result in some hearing loss Ear plugs or protectors in the ear canal or over the ears must be worn when operating this amplification system in order to prevent a permanent hearing loss If exposure in excess of the limits as put forth above to insure against potentially harmful exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of inducing high sound pressure levels such as this amplification system be protected by hearing protectors while this CAUTION unit is in operation RISK OF ELECTRIC S
30. ing and calibration hook up diagram technical specifications troubleshooting and operating tips TOD O1 O1 BR fF HR HP HR BP HR HP GO CO CO WB WBN ON lt system accessories other hear technologies products limited warranty Hear Back PRO User Guide This is it solution to get everyone the mix they need to perform the simplest most affordable digital their best This new system platform is completely modular and infinitely expandable which means it is the last personal monitoring system you ll ever need Introducing the latest addition to the Hear Technologies family Hear Back PRO With this system there is no learning curve Whether or not you ve ever used a personal monitor mixer the simple layout of this powerful system makes getting the right mix a quick and effortless experience Based in Gigabit Ethernet this framework paves the way for an impressive range of future possibilities The Hear Back PRO System Hub amp Mixers The Hear Back PRO system consists of two main components the Hub and the Mixer The modular Hub consists of four card slots which can be populated with any configuration of input and or output cards to fit your exact needs Each Hub has the ability to supply signal and power to as many as 32 Mixers 8 per Network Card each over a single standard CAT6 cable And with the built in HBus In Out ports multiple Hubs c
31. is provides an easy way to know if one of the power supplies has failed On the back of the Hub an LED is present directly under each power port and will be lit if power is present at that port hear back PRO HBUS 6 REAR PANEL MAIN BOARD SLOT 1 INPUT A SLOT 2 SLOT 3 INPUT B SLOT 4 48V MAIN PWR 48V AUX PWR DA 88 8 CH ANALOG INPUT PROGRAM PRO MIXERS ONLY JTA LED Status Indicator Sample Rate LED Indicators Q Audio Input Channels 1 16 Level LED Metering Input Selector Switch Power Switch Main 48V Power Input Q Secondary 48V Power Input HBus Input O HBus Output USB Connection Card Slot 1 shown with 8 channel Analog Input 12 Card Slot 2 shown with 8 channel Analog Input Card Slot 3 shown unpopulated Card Slot 4 shown with 8 port Network Card Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better Hear Back PRO User Guide 3 MIXER FEATURES Local control of up to 18 channels of audio Receive power and audio over one Ethernet cable up to 500 from Hub to each Mixer Side mounted card slot for future expansion e Large master knob controls overall main mix AUX and intercom levels independently e 24 bit D A and A D delta sigma converters Error
32. nal SD card Connect the Hub to a computer via USB The Hub will appear on the computer as a mass storage device named HBPRO Download the latest firmware file from our website and simply drag and drop the file onto the HBPRO then reboot the Hub e If error code LED Dis lit alone or in combination with any other error LEDs An internal power problem has occurred Please call customer service Rorer to the A B C D error code LEDs below the HBus ports on back of Hub This is typically an overheating problem if so error code LEDs A B amp will be lit o Allow adequate ventilation for Hub as specified in owners manual e If any other combination of error code LEDs are lit please contact customer service e Verify that there are not two 16 channel input cards the same input e g slot 1 amp slot 2 The Hear Back PRO Hub cannot have more than one 16 channel input card on the same input e f using an off the shelf network switch it might utilize a function known as EEE Energy Efficient Ethernet Attempt to bypass the network switch making a home run from Hub to Mixer to verify this is the problem if so try a known good network switch from the list at the beginning of the Hear Back PRO User Guide e Verify power switch is on e Verify the Hub is receiving power by checking for a yellow LED beneath the power port on the back of the Hub This LED should be lit when the power supply is connected even with the Hub pow
33. nel 16 total that can be removed to achieve a 10dB pad per channel These jumpers are labeled 1 8 corresponding to each input channel and located one inch away from the DB 25 connector So in this example input channels 1 amp 4 will be reduced by 10dB while input channels 2 amp 3 are at OdB st E ci Lolo oo 1 4 LEGEND No Jumper Jumper Connected Connected Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better 2 Hear Back PRO User Guide HBUS The HBus permits daisy chaining of multiple Hubs up to 500 feet apart using the HBus input and HBus output This HBus is great for inter studio or stage to stage connections as well as daisy chaining for very large systems Use Hear Technologies CAT6 cables available in 50 foot length HBus RJ45 pin outs are the same as standard gigabit Ethernet RJ45 pin outs only without power The pin outs are wired as shown below Description Suggested Termination P Color Scheme 568B 3 B Bidirectional Data Pair B cr Baronatar ww _ EN ES CT TT gt EEE gt Ces Color Scheme 568A is also acceptable but do not crossover from 568A to 568B INPUT SELECTOR SWITCH The input selector switch gives the user a simple way to select any one of the three input sources without a patch bay router or rewiring DETAIL DIAGRAM FRO
34. not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet Protect the power cord being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Do not break the ground pin of the power supply cord Only use attachments specified by the manufacturer Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving cart apparatus combination to avoid injury from tip over Unplug this apparatus during lightning storms or when unused for long periods of time Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation ports or any other openings Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped WARNING To reduce the ri
35. nother Mixer the intercom has an auto gain feature that automatically adjusts the incoming signal so that you ll always hear it over your mix Cable complying with the National authorities cable with an outer jacket or sleeving rated VW 1 or better 4 Hear Back PRO User Guide INTERCOM OPERATION To broadcast your intercom momentarily simply press and hold the INTERCOM button The button and the master knob LEDs will light up red to indicate that the intercom is broadcasting and that the master knob now controls the input gain for your intercom source To latch your intercom for a continuous broadcast rapidly push the INTERCOM button three times in succession The button and the master knob LEDs will stay red to indicate that the intercom is broadcasting Press the INTERCOM button once more to stop continuous broadcast and return the master knob to its original function The INTERCOM button will rapidly blink red to indicate that a broadcast from another Hear Back PRO is currently being received Only one Mixer is able to broadcast at a time so while one Mixer is broadcasting all other Mixers on the same network are locked out from broadcasting until the transmitting Mixer s INTERCOM button is released or un latched If another Mixer is broadcasting and you wish to overtake the intercom simply triple tapping the INTERCOM button will stop the other Mixer from transmitting latching your intercom instead DISABLING THE INTERC
36. recallable presets while most recent configuration is remembered after power down Intercom feature allows communication to anyone with a Hear Back Mixer Selectable 1 8 inch TRS stereo unbalanced and XLR mono balanced with 15v phantom power AUX inputs Microphone input for crowd ambiance mic or for use with intercom Drum module metronome or local mix input One 1 8 inch TRS headphone output One 1 4 inch TRS headphone output AUX INPUT The auxiliary input connections provided are one 1 8 inch TRS stereo unbalanced input optimized for 0 dBu input level and one XLR mono balanced input optimized for 42 dBu input level selectable via the switch located adjacent to the connections The inputs provide another mono or stereo mixed channel to be inserted into the Mixer Examples of use would be a drum machine click track into the drummer s Mixer or a crowd ambient mic in everyone s Mixer which can double as the intercom mic Another application would be a stereo mix from a guitar or keyboard local mix from another Hear Back or Hear Back PRO Mixer creating a total of 18 channels controlled from your Mixer AUX INPUT OPERATION Press the AUX button to change the function of the master knob to control the volume of the auxiliary input in the mix Once pressed the AUX button and master knob LEDs will turn red to indicate this function is active Press the AUX button again to exit auxiliary volume control or wai
37. sk of fire or electric shock do not expose this apparatus to rain or moisture The apparatus shall be connected to a mains socket outlet with a protective earthing connection Mains plug is used as the disconnect device It shall remain readily operable and should not be obstructed during intended use WARNING To prevent injury this apparatus must be securely attached to a rack in accordance with the installation instructions Detailed installation instruction in user manual Hear Back PRO User Guide i Danger L exposition a des niveaux eleves de bruit peut provoquer une perte permanente de l audition Chaque organisme humain reagit differemment quant a la perte de l audition mais quasiment tout le monde subit une diminution de l acuite auditive lors d une exposition suffisamment longue au bruit intense Les autorites competentes en reglementation de bruit ont defini les expositions tolerees aux niveaux de bruits DURE EN HEURES PAR JOUR 8 6 4 3 2 1 NIVEAU SONORE CONTINU EN dB 90 93 95 97 100 103 Selon les autorites toute exposition dans les limites citees ci dessus peuvent provoquer certaines pertes d audition Des bouchons ou protections dans l appareil auditif ou sur l oreille doivent etre portes lors de l utilisation de systeme d amplification afin de prevenir le risque de perte permanente de l audition Dans le cas d expositions superieures aux limites precitees il est recommande afin de
38. t 30 seconds from the last adjustment for the system to automatically return the master knob to its default function PRESET OPERATION The Hear Back PRO Mixer has the ability to store up to four system states in internal memory for easy session settings recall Pressing the PRESET button will step through presets 1 4 one at atime To save current settings to a preset hold the PRESET button for 2 seconds until the LED under the preset number rapidly blinks and continue holding the PRESET button for 3 more seconds to begin stepping through preset memory slots Release the PRESET button when the desired preset number is rapidly blinking to save to that preset memory slot Upon making any control change while using a preset the preset number will slowly blink to let you know your new settings have not been saved To save the changes to the preset simply hold the PRESET button for 2 seconds until the preset number rapidly blink then release To reset a preset s parameters back to default all volume at 0 all channels center panned all stereo linked channels unlinked first complete the settings reset operation discussed later in this manual then complete the normal steps listed above to save the settings to a preset INTERCOM The intercom function transmits the AUX IN source to everyone with a Hear Back PRO Mixer on the same network By default the input gain for the intercom source is set to 75 When receiving audio from a
39. tc Utiliser exclusivement un chiffon sec pour nettoyer ce produit Ne bloqu r aucune ouverture de ventilation Ne pas placer le produit tout contre un mur ou dans une enceinte ferm e cela g nerait le flux d air n cessaire au refroidissement ii Hear Back PRO User Guide 11 17 18 19 20 Ne pas placer le produit pr s de toute source de chaleur telle que radiateurs arriv es d air chaud fourneaux ou autres appareils g n rant de la chaleur incluant les amplificateurs producteurs de chaleur Ne pas n gliger la s curit que procure un branchement polaris ou avec raccordement la terre Un branchement polaris comprend deux fiches dont l une est plus large que l autre Un branchement la terre comprend deux fiches plus une troisi me reli e la terre Si la fiche secteur fournie ne s insert pas dans votre prise de courant consulter un lectricien afin de remplacer votre prise obsol te Prot ger le cordon d alimentation de tout crasement ou pincement particuli rement au niveau des fiches des r ceptacles utilis s et l endroit de sortie de l appareil Ne pas casser la fiche de terre du cordon d alimentation Utiliser uniquement les accessoires sp cifi s par le constructeur 12 Utiliser uniquement avec le chariot de transport le support le tr pied la console ou la table sp cifi s par le constructeur ou vendus avec l appareil Lors de l utilisation d un chariot bouger ave
40. the source for as much signal into the Hub as possible without clipping Higher input levels improve signal to noise and dynamic range If you are unable to adjust your source without overdriving the Mixer Adjustment Once you have the signals optimized turn the master volume up to about 10 o clock and then raise each channel s volume up to a comfortable level Avoid adjusting the master volume too high and running the inputs too low If you wish to stereo link any channels enter the stereo link control interface and toggle them on If you wish to pan any mono channels within the stereo field press the PAN button to make adjustments AUX IN Adjustment If using an auxiliary input connect it to the Mixer via the appropriate LINE or MIC input Select the appropriate input via the AUX IN selector switch If possible adjust the input source for maximum volume without clipping Press the AUX button to turn the Master knob LEDs red and slowly turn the Master knob to a comfortable level Press the AUX button again to exit auxiliary volume control Hear Back PRO system follow the 10dB Pad instructions Now enjoy personal monitoring at its best and have fun on page 2 to achieve and extra 10db of headroom Remember higher input levels improve signal to noise and dynamic range HOOK UP DIAGRAM CRT hear back PRO HUB A WARNING The Hear Back PRO is capable of driving most
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