ETI Sound Systems, INC ACT
Contents
1. amp MID RANGE COMPONENTS Sound Systems Inc warrants the original purchaser that the B 52 subwoofer will be free from defects in material and workmanship for a period of 5 FIVE YEARS from the original purchase date A dated sales receipt will establish coverage under this warranty This warranty will automatically terminate 5 five years after the original sales date See provided Limited Warranty Card for additional terms and conditions B 52 AMPLIFIER E T l Sound Systems Inc warrants the original purchaser that the B 52 amplifier will be free from defects in material and workmanship for a period of 2 TWO YEARS from the original purchase date A dated sales receipt will establish coverage under this warranty This warranty will automatically terminate 2 two years after the original sales date If this product is defective in materials or workmanship as warranted ahove your sole remedy shall be repair or replacement as provided above See provided Limited Warranty Card for additional terms and conditions B 52 CABINETS ETI Sound Systems Inc offers a LIFETIME warranty to the original purchaser that B 52 cabinet construction will be free from defects in material and workmanship An original dated sales receipt or legible copy of same will establish coverage under this warranty The warranty does not cover service or parts to repair damage caused by abuse or neglect or normal wear and tear The warranty does not cover cos metic appearance2. a serious problem with the amplifier or speak er Under normal operating conditions the fuse should NEVER go open It does so only under fault conditions Take extreme care with household electricity as it has the potential for deadly harm Do not expose the amplifier inside by removing the amp from the cabinet and then plugging it into AC mains power VOLTAGE PRESENT ON THE PRINTED CIRCUIT BOARD WHILE THE AMP HAS AC MAINS POWER SUPPLIED TO ARE POTENTIALLY LETHAL If the fuse repeatedly blows especially on first powering up the amp it is an indicator of a fault condition and the AC mains power should be removed and the entire system should brought into qualified service technician for repair 12 POWER CORD CONNECTOR For attachment of the included IEC standard detachable power cord Please replace this cord should it become chafed cut bent or damaged in such a way that the pro tective insulation is compromised TOUCHING LIVE EXPOSED WIRES ON THE POWER CORD CAN RESULT IN INJURY OR DEATH Only replace the cable with the exact same type and size FEATURES 2 4 4 24 e 0 6 O ii o External npe Full Range Speaker pe Level i SZ lt 7 Protection Phase Pins 1 2 1 2 a 9 wW AS O L Input e o 9 Amplifier e ACT 18X Designed by ETI Sound Systems B 52 Pro Audio Huntington Park CA Model ACT 18 May be covered by one or more patents pendi
3. fault condition in the system causing circuitry to engage in order to protect the amplifier and prevent it from damaging itself and or the attached speaker s The most common cause of this is running the amplifier at or near its maximum output level for a very long time This WILL CAUSE overheating If protection is engaged because of overheat ing the best course of action is to turn down the level control on the amplifier for long enough 10 15 minutes to allow the fan to cool it off After this time if the amp still does not go out of its protect mode indicated by the red LED going dim turn it off for 10 seconds and then turn it on again If it still does not operate contact your authorized service provider or B 52 5 RIGHT amp LEFT INPUTS These XLR connectors accept a balanced input signal cable The wiring conforms to the Audio Engineering Society standard where Pin 2 is or hot Pin 3 is or cold and Pin 1 is the Shield or ground The low frequencies are summed because our hearing does not detect direction for very low frequencies those in the range of the subwoofer There is therefore no loss of stereo image in using a single speaker to reproduce the bass from both channels 6 RIGHT amp LEFT FULL RANGE OUTPUTS These connectors are shorted to the INPUTS allowing daisy chaining of the input sig nal Therefore you do not need to y cable out of your mixer or audio device to get an additional full range signal s to another active When c
4. of the cabinetry not directly attributable to defects in the original material or workmanship If the cabinet is defective as described in this paragraph then your sole remedy shall be repair or replace ment See the included limited warranty card for terms and conditions INCIDENTAL OR CONSEQUENTIAL DAMAGES In no event shall Sound Systems Inc be liable for any incidental or consequential damages arising out of the use or inability to use of any B 52 product even if ETI Sound Systems Inc or a B 52 dealer has been advised of the possibility of such damages or any other claim by any other party Some States do not allow the exclusion or limitation of consequential damages so the above limitation and exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights that may vary from State to State See provided Limited Warranty card for additional terms and conditions RETURN PROCEDURES In the event product repair is needed follow the procedure outlined below Contact B52 1 800 344 4 or 1 323 277 4100 from 8 am to 430 pm Pacific Standard Time for the loca tion of the authorized service center nearest you Follow the service center s instructions regarding return of the product In some instances B52 may request you return the product directly to Sound Systems Inc for service or repair After speaking with a B52 representative you will be issued a return authorization number RA
5. 18 Active Subwoofer INSTRUCTION MANUAL un a IMPORTANT SAFETY INFORMATION Read all the instructions before attempting to use the ACT 18X Follow all instructions contained in this manual Keep these instructions in a safe place where they be found and referred fo in the future Use common sense in operating your ACT 18X and heed all warnings included in your operating manual Do not use the ACT 18X near water Do not use it in or near a washtub sink pool standing water bathtub or anyplace where the likelihood of water mixing with electricity is present Clean only with a clean dry cloth Do not locate your ACT 18X in an area which has limited or very poor ventilation Obstructing the fan intake outlet or the heat sink will likely cause the product 10 overheat and shut down 8 11 12 Do not install the ACT 18X near any heat sources such as radiators stoves portable electric heaters or other devices that produce significant amounts of heat If you do it could cause the product to overheat and shut down Do not touch the amplifier heat sink with an ungloved or unprotected hand while or shortly after the ACT 18X has been operating The heat sink may get hot during operation Do not attempt to defeat the safety purpose of the AC cord s polarized grounded plug If the provided plug does not fit your outlet hire an electrician to replace t
6. LOSS 3 97 2 Please note the recommended exposure limits right in Table G 16 More information about these limits is available on the US 15 government Occupational Safety and Health OSHA website at www osha gov table to the right is shown at 1 hitp www osha gov pls oshaweb owadisp show _document p id 9735 amp p_table STANDARDS 0 5 AMPLIFIER MODULE PRECAUTIONS Do not attempt to service the ACT 18X yourself Refer all servicing to a B 52 Pro Audio Authorized Dealer or other qualified servicing personnel Service may be required if and when gt The ACT 18X has had liquid spilled or objects have fallen inside the subwoofer gt A heavy object s has have fallen onto the speaker gt The cabinet amp or speaker has been damaged gt The speaker has been exposed to excessive rain or moisture gt The cabinet has been dropped hard enough to cause damage gt The amp has failed to turn on and has AC mains power available gt The amp or speaker does not operate normally or as it should gt Keep your ACT 18X amplifier away from any heat source Do not cover your ACT 18X amplifier so that either the amplifier fan or heat sink is partially or totally obstructed doing so will likely result in amplifier overheating triggering the shutdown or failure of the amp 0 25 or less WARNING To reduce the risk or fire or electrical shock do not expose this equip ment to rain or moisture CAUTION ION ELM OF ELEC
7. N which you will clearly label the return merchandise with If the service center is not nearby you and you are sending the product by common carrier be sure to package the part or parts in a manner that will prevent damage from occurring in shipping In most instances B52 will request that products returned by shipment include ONLY the defective part s and not the entire product We will instruct the customer what part s we wish returned and how to remove if prior 10 issuing a RAN for the return s UNLESS SPECIFICALLY INSTRUCTED TO DO SO NEVER RETURN THE ENTIRE CABINET JUST THE DEFECTIVE COMPONENT See provided Limited Warranty card for additional terms and conditions FOR YOUR PROTECTION Please complete and mail the Purchase Information Card within 10 ten days of the date of purchase so that we may contact you directly in the event a safety Notification is issued in accordance with the 1972 Consumer Product Safety Act In addition we ask that you complete the brief questionnaire so me may analyze your answers and in this way help us evaluate our customer needs See provided Limited Warranty card for additional terms and conditions B 52 PROFESSIONAL 3383 Gage Avenue Huntington Park CA 90255 Phone 323 277 4100 Fax 323 277 4108 National 1 800 344 4 Internet www B 52PRO com E mail info B 52PRO com
8. TRIC SHOCK PRECAUCIONS Para Prevenir el incendio o la descarga electrica no exponer este equipo a la lluvia o a la humedad The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and main tenance servicing instructions in the literature accompanying the appliance The lightning flash with arrowhead symbol adjacent to a terminal is intended to alert the user that the terminal is haz ardous live El s mbolo de flecha rel mpago dentro de un tri ngulo equil tero es para alertar al usario de la presencia de voltajes peligrosos no aislados en el interior del aparato los cuales pueden ser de suficiente magnitud para constituir un riesgo de choque el ctrico a las personas El s mbolo de exclamaci n dentro de un tri ngulo equil tero es para alertar al usuario de la presencia de instrucciones importantes de operaci n y man tenimiento servicio en la documentaci n que acompa a al equipo El s mbolo del rel mpago con la punta de flecha que est situado junto a la terminal es para alertar al usuario que la terminal presenta un peligro cuando est activa To reduce the risk of fire or electrica
9. ere is condensation on the outside of the heatsink it is safe to assume the condensation is present inside as well 4 The unit is not operating normally 6 The unit has been dropped with significant force and is not operating normally INSIDE THIS INSTRUCTION MANUAL Important Safety Instructions Specifications 2 Set up 3 Subwoofer Control Panel Features 4 5 Connection Diagrams 7 Warranty Information 7 AMPLIFIER SPECIFICATIONS gt 1200 watt Digital Amplifier with Voltage Tracking Power Supply gt 1200 watts 4 Ohms gt 800 watts 8 Ohms gt Built in compressor limiter gt Built in 24db octave Crossover gt Crossover Frequency 120 Hz 24db octave gt Subsonic Filter 32 Hz High Pass 18 db octave gt Nominal Loudspeaker Impedance each subwoofer 8 Ohms gt Minimum Load Impedance 4 Ohms One active and one passive sub gt Minimum Power Consumption with no signal input 20 watts gt Power Requirements Up to 12 Amps 120v 60Hz gt XLR Balanced Inputs gt XLR Full Range Outputs gt XLR Balanced High Pass Outputs gt 0 180 phase switch gt Speakon Style Speaker Output Connector for connecting a passive Sub SP 18XS gt Thermal amp Short Circuit Protection gt Signal sensing circuitry with LED indicator LOUDSPEAKER FEATURES gt P
10. he obsolete outlet Protect the AC mains power cord from being damaged SERVICING The user should not attempt to repair a damaged or inoperable ACT 18X other than by replacing a blown AC mains fuse or 0 damaged detachable power cord DO NOT TOUCH A DAMAGED POWER Turn off and unplug the ACT 18X when not in use except during a lighting storm A lightning strike on the AC line equipment is plugged into could cause electrocution 10 those in contact with that equipment This is why your ACT 18X comes with a 3 prong power cord The third prong Earth ground is to prevent such harm Should you believe an electrical storm to be imminent then it would be wise to unplug the ACT 18X BEFORE the storm approaches WARNING To reduce the risk of fire or electrical shock do not expose this system 10 rain or moisture To reduce the risk of fire or electric shock do not expose the ACT 18X to rain or moisture Servicing may be required when the ACT 18X hos been damaged If any of the following conditions listed below has occurred please turn off and unplug the ACT 18X and seek the help of qualified service personnel The following conditions all require service 1 The power cord or plug is damaged 2 Objects have fallen into liquid has been spilled into the amp 3 The ACT 18X has been exposed to significant moisture such as rain or fog and or there is present condensation inside the amplifier due to weather conditions If th
11. l shock do not expose this unit to rain or excess moisture Do not operate your ACT 18X S in or near a pool or other standing water In the event the powered speaker comes in contact with the water an electrocution hazard may occur Do not bypass or defeat the grounding or polarization means used on the ACT 18X amplifier Make sure all blades on the polarized power plug are fully inserted into the AC mains power receptacle Ensure the power cord is not stretched pinched chafed or otherwise damaged Ensure the power cord is routed safely and secured to avoid the possibility of someone tripping over it ACT 18X SUBWOOFER FEATURES AND USAGE Numbers in this section refer to the numbered controls opposite 1 LEVEL CONTROL Sets the volume of the subwoofer without influencing the volume of the satellites the satellites or the full range outputs on the panel mounted XLR connectors 2 PHASE SWITCH Allows the user to reverse the direction of excursion at low frequencies This is to help in getting the subwoofer to move in proper PHASE with the satellites so that the sound in the crossover region from the satellite and subwoofer add instead of subtract 3 POWER INDICATOR The AC Mains Power rocker switch located on the lower left hand side of the amplifier turns on the AC mains power to the amp A failure to light the Red rocker switch indicates lack of power and or a blown AC mains fuse 4 PROTECTION This Red LED turns on when there is a
12. ng ON AM 40 2 41 1 2 O WARNING To reduce the risk or fire or electrical shock do not expose this equipment 120 V AC 60 Hz DO NOT OPEN to rain or moisture Please read instructions prior to operation CONNECTING YOUR ACT 18X NUMBER 1 CONNECTIONS TO ACTIVE SPEAKERS Active Full Range Speakers Adive Full Range Speakers HIGH PASS OUT indjng pasunjng Jax yy wo indjng parunjng B 52 ACT 18XS Passive Full Range Speakers SPEAKER OUT SPEAKER OUT indjng pasunjog 52 18 B 52 18 5 NUMBER 3 CONNECTION TO ADDITIONAL POWER AMPLIFIERS AND PASSIVE SPEAKERS B 52 ACT 18X B 52 ACT 18XS FULL RANGE OUT 3 3 e e E 3 gt lt 3 8 2 2 El E a 2 a 8 8 a 5 ES 2 e 5 5 B 52 ACT 18X B 52 18 5 WARRANTY INFORMATION Thank you for choosing this B 52 Pro Audio sound product B 52 manufactures some of the world s best sounding and most reliable professional speaker systems and components E T l Sound Systems Inc manufacturers of B 52 takes great pride in thoroughly testing each B 52 product prior to shipment Please refer fo your warranty card for additional information and or updates in terms and conditions LOUDSPEAKER
13. onnected to the ACT 18A turn this switch on Do not use this switch unless HOT 3 the volume control is all the way down fully counter clockwise COLD wes GROUND 9 EXTERNAL SPEAKER OUTPUT This 4 pin Speakon style connector is for connecting an ACT 18XS passive subwoofer to the ACT 18X amplifier Either pins 1 and 2 can be used as the positive connection Either pins 1 or 2 can be used as the Negative Connection Only connect an ACT 18XS in parallel to the ACT 18X subwoofer Use of any sub other than an ACT 18XS will void the war ranty and may cause your amplifier to shutdown or fail When adding subwoofers it is important that they have the same response COLD 3 magnitude and phase or one will likely subtract its output from the other instead of adding at some point within the range of both eee SHIELD 10 ON OFF SWITCH Turns on the mains power and your ACT 18 amplifier If power is available and the amp is working prop COLD erly the Power ON OFF switch will light up If it does not unplug the AC cable from the wall and then check the AC mains fuse in your HOT ACT 18X for continuity with a multimeter or ohmmeter If the fuse is open no continuity replace with same kind and type If the replacement fuse blows in short order seek service from a qualified technician 11 FUSE HOLDER Houses a 12 Amp size glass slow blow fuse REPLACE ONLY WITH SAME KIND NOTE Very often a blown fuse is a symptom of
14. onnecting a balanced signal ensure it is wired as system nearby your ACT subwoofer Use this connector to daisy chain multiple systems together per AES Audio Engineering Society specifications See diagram on page 7 for details XLR 7 RIGHT amp LEFT HIGH PASS OUTPUTS Sends the high frequency portion above 120hz of the full range signal to power ampli LA Mte di Hot Pin 2 fication for the full range or mid high frequency satellite speakers This signal is the complement of the music signal sent to the sub woofer In other words it is what is left of the music after the bass has been removed It is that part of the music which the subwoofer Cold Pin 3 does NOT reproduce It should be sent 10 your active satellite speakers INSTEAD of the full range signal When the very lowest bass Ground Pin 1 frequencies are removed from the satellites this will increase your dynamic range let you play it louder lower your distortion and improve the sound of the system relative to what you would hear with the full range signal sent to your high frequency satellites See SHIELD Hor 2 diagram on page 6 for details Pi 8 EXTERNAL SPEAKER ON OFF SWITCH When using the powered ACT 18X without a second passive subwoofer the ACT 18XS F this switch should be in the off position IF IT IS NOT THAT WILL REDUCE THE AVAILABLE POWER TO THE SINGLE ACT 18X SUBWOOFER KEY 1 When an external non powered subwoofer ACT 18XS is c
15. ower handling of 1200 Watts RMS 2400 Watts peak gt Sensitivity 102 dB 2 83V O Meter gt Peak SPL 132 dB 1 Meter gt 4 layer 4 Inch Diameter Voice Coil gt Extra durable non press paper cone gt Heavy duty Polyester Cotton double spider for great long term mechanical stability gt Magnetically optimized forged T yoke with deep bump for high excursions gt Undercut pole piece for lower distortion and better mechanical clearance gt Double thick Fiberglass Voice coil former for incredible rigidity at the driving point gt Extreme high temperature enamel and adhesive used on voice coil wire gt Precision machined low carbon steel magnetic circuit gt Super duty polyester cotton accordion edge surround gt Double spiders to afford superior protection from bottoming and rocking CABINET FEATURES gt Superior grade of 13 ply Baltic Birch gt Heavy duty scratch resistant durable black paint finish gt 16 Gauge perforated steel grille for maximum protection gt 2 amp 3 8 diameter steel pole mount cup gt Flared ports for highest available output without port noise gt Dimensions W x H x D 24 x 33 x 22 gt Weight 110lbs WARNING THE ACT 18X CABINET HAS NO RIGGING POINTS IT IS NOT SUITABLE FOR FLYING NEVER ATTEMPT TO SUSPEND THIS CABINET BY ITS HANDLES DOING SO COULD RESULT IN INJURY OR DEATH SETTING UP YOUR ACT 18X SUBWOOFER The B 52 Pro Audio speakers described in this ins
16. speaker above the ACT 18X be sure to observe the follow precautions gt Be sure the pole is capable of supporting the load of the mounted speaker without risk of falling or tipping gt Check to be certain the pole is firmly placed within the pole cup built in to the ACT 18X as well as the satellite speaker so no sudden movement will occur causing the satellite to drop off or shift during operation gt Make sure cables routed to and from the ACT 18X and any other connected loudspeakers are secured with great care to prevent accidents Use all normal and necessary means to insure a safe performance gt B 52 Pro Audio recommends satellite placement and removal be performed by no less than two physically capable persons at a time HEARING DAMAGE AND PROLONGED EXPOSURE TO EXCESSIVE SPLs TABLE G 16 PERMISSIBLE NOISE EXPOSURES 1 Duration per Sound level B 52 Pro Audio speakers can produce sound levels high enough to cause permanent hearing damage to performers day hours dBA slow response production crews or people in the audience Hearing protection devices are recommended for use where long term exposure to 8 90 high SPLs are not avoidable Remember if it hurts it is definitely too loud Long exposures to high SPLs cause first 6 92 temporary threshold shifts limiting your ability to hear the actual loudness and exercise good judgment Repeated long term 4 95 exposure to high SPLs can and WILL CAUSE PERMANENT HEARING
17. truction manual are intended for use directly on the floor ground or stage The ACT 18X and ACT 18XS described in this manual should NEVER be flown These models are intended primarily for use in mobile installations Fixed install versions and flying versions are available so for those purposes please consult your B52 Pro Audio dealer or our website www B 52PRO com for appropriate models Repeated exposure to direct sun will significantly shorten the useful life of the loudspeaker system Avoid exposing the system to the elements whenever possible Exposure to rain long term high humidity and or ultra violet rays will cause premature aging of the subwoofer Prolonged use of the ACT 18X outdoors or in high moisture areas can damage the subwoofer and amplifier Because of the forces needed to reach high SPLs at low frequencies the intense vibrations of the woofer may cause the cabinet to move during operation When placed on slick surfaces such as polished wood or smooth tiles the speaker may move walk off the stage during use Precautions should be taken to ensure the subwoofer does not fall or slide off a stage or raised surface A high friction surface such as carpeting works best to prevent this The addition of weight to the cabinet such as a pole mounted speaker atop it will diminish eliminate this characteristic The ACT 18X model includes a pole mounting cup to allow mounting a satellite speaker above it When installing a pole mounted
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