User Manual Powered Speaker Controller PSC2.400
Contents
1. Figure 12 Click truncate Anything currently outside the display is drawn in grey and not processed You will notice that in the frequency graph a portion of the low frequency response is also drawn in grey This is to remind the user that insufficient information is available to make any correction below 12 User manual R5 PSC2 400 this frequency A way of obtaining quasi anechoic low frequency measurements is making close up measurements Working with such measurements requires a good deal of interpretation but it is doable Important Avoid making any corrections for which no anechoic data is available If reflections are included they are guaranteed to dominate the measurement at low frequencies and you will end up making corrections for circumstances that are highly specific to the room in which the measurement was made Power response data can only be made in a proper echo chamber or preferably by collat ing a large number of anechoic off axis measurements A reverberant measurement in a normal live room just won t do The steps of loading and truncating data can be repeated at any time This can be particularly prac tical when combining close up and far field measurements during the filter design phase The win dow in Figure 12 shows the result of this The small knot of corrections made around 7OHz is2. Software installation System requirements e Pentium class or higher e 64MB RAM e USB1 0 or higher Tested on Windows XP and Vista All files are compressed in the setup zip file This zip file contains 1 DLL file for communication and an EXE file which represents the Hypex DSP filter design program 1 Unzip the setup zip file on your hard disk 2 Open the Hupex DSP filter design EXE by double clicking the file Control panel Now the program is ready for use You will see the Ces following window called the control panel File View Help Force Input Active input Rad_PSC_Setup Unit position Ze Auto Detect Analogue EE Left Analogue AES EBU C AES Bridged Right Group Volume Filter presets Preset C Preset3 C Dese C Preset4 Update I Mute al Figure 7 When the program is running connect your module to your pc by the USB cable Windows will auto matically detect and install the HID device When the installation is done the connected the connec tion light will turn green You can also manually make a connection by the connect button on the bottom right of the control panel Now you may adapt the settings of the module real time through USB On the left side in the control panel you see the Force input and active input groups This shows you the settings of the audio in puts and lets you control these inputs only for digital version Audio can be provided analogue and digital
3. Hypex Electronics BV Kattegat 8 9723 JP Groningen The Netherlands 31 50 526 4993 sales hypex nl www huypex nl User Manual Powered Speaker Controller PSC2 400 7A h y P EX electronics PSC2 400d UD ess D s D Te h User manual R5 PSC2 400 Table of contents Product GSCI OM EE 3 Type TE 3 eege 3 elle TEE 3 REES 4 System HEES eege eg 6 Ree Tel BEE 6 Audio performance data E 6 Hardware eng TE D Digital dudi lu EE D sieht cs E D Clip limiter EE T POG WOT OU EEN 8 Hardware dE 8 Software installation ceeccccccsssececccessseeeccesseececsasecececssseeeccssaseeccecseaseeecessaseeeeettaaees 9 ei cel Deen kres o TNE NT Sh nto er enn er art Rem T Poet te re eer 9 Filter design EE 10 Graph e EE 11 Filter LIS TUITION EE 11 ln E GO EE 11 Work EEN 11 el een EE 11 Be Tat eh EE 13 OUI EE 14 leet E 14 Safety PRC CO URIS eegene Deeg Ee EEE kates diageeiincavenndkestodsnnabdanianaliaeias 15 Instructions For Installation saris csinncsdanenadadenteacdsanslatistenaihnstenseashsndsannsscatansteuncadamenamuaseseieinsia 15 Recommended Operating Conditions for the ohne 16 General Performance data for tbe 16 M ns Se CUO E 17 Techmeadl dataireiienanaa nesine aee ia a i a i eee 18 Product description Type remarks Use only a version 1 4 or higher of the Hypex Filter Design program In earlier versions the PSC is not yet implemented The first time the PSC2 400 is used all biquads are zero so there are no filters i
4. 20 0 Supply voltage dependant 100 113 90 80 60 40 20 0 Figure 5 When the limiter for either channel is active the Clip led will be lit Thermal protection All modules fitted with Hardware PSC2 V2 or later delivered since November 2010 have a build in thermal protection This protection lowers the output gain 1 dB per degree starting at plate tempera ture of 70 degrees Celsius The outputs will be completely muted when the temperature rises over 90 degrees 7 h y p en User manual R5 PSC2 400 Product overview Before you can use the PSC2 400 d in your particular setup you first have to set the right settings This is done by pc software called Hupex DSP filter design Please do not connect any speakers to your system yet Hardware part The PSC2 400 can be used in 2 ways as a 2 channel setup or as a one channel bridged version for more power This is selected in software The module can store up to 4 presets A preset holds the complete filter settings of both channels By this the user is able to make different system settings for its speakers for example for different rooms and setups All of the presets are empty from factory setup therefore the filters must be downloaded first See section examples note that for bridged mode both LS connections must be used see section Connections for more information Figure 6 User manual R5 PSC2 400
5. DN 25 gt Source HEX file Select Close figure 10 The settings window is under File gt Settings Measurement sampling rate sets the sample rate used in the imported response files typically 48kHz Processor sampling rate is that of the Hypex DSP hardware Note that this setting does not control the sampling rate of the hardware Rather it in forms the filter design application of what that sampling rate is In short leave this at 46 875kHz The select button opens a file dialogue box witch is not used in this application Work flow Measurement Measuring using the DSP unit set to flat 11 User manual R5 PSC2 400 Perform impulse response measurements for each driver separately Save the entire impulse record truncation can be done later on the filter design program Measuring using an external amplifier A separate amplifier may also be used for measuring the drivers provided the amplifier s output impedance is as low as the DSP unit s Importing response data Select the tab for the channel you want to import and click select The filter designer expects the impulse response measurement as a text file with one sample per line There is no restriction on the absolute gain of the impulse response data The only thing that mat ters is that the absolute gain be the same for all three measurements The filter designer computes a gain offset based on all loaded responses to centre th
6. based on close up data first loaded separately The LF section of the test mule is quite smooth apart from one internal standing wave Designing filters Biquad function Parameters Use Unity Section is not used LPF1 Cut off frequency always 3dB First order lowpass LPF2 Cut off frequency asymptotically Second order lowpass A Q of 0 71 corre Q sponds to butterworth 0 5 corresponds to LR2 Two identical sections with a Q of 0 71 form an LR4 filter HPF1 Cut off frequency always 3dB First order highpass HPF2 Cut off frequency asymptotically Second order highpass A Q of 0 71 cor Q responds to butterworth 0 5 corre sponds to LR2 Two identical sections with a Q of 0 71 form an LR4 filter Shelf1 Centre Frequency halfway point First order shelf Useful for baffle step Gain correction Direction Centre Frequency halfway point Second order shelf Useful for correcting Shelf2 Gain internal cabinet resonances and for the Q Direction midband peak dip combo of most mid woofer speakers Asymmetric Shelf Pole frequency and Q Zero frequency and Q Equalising the bottom end of closed box woofers with large magnets Boost Cut Centre frequency Q gain Dip peak filter For peaks Q is defined by the poles For dips Q is defined by the zeros Thus the same filter with op posite gains will cancel The first step is equalising the magnitude responses of the drivers fla
7. SC2 400 is limited to 500Watts total Hardware Architecture The standard version of the PSC2 400 has an analogue balanced audio input This analogue signal is converted to digital processed by the DSP and then converted back to analogue A microcontroller controls the DSP and communicates with the PC and can set the presets An unbalanced source may also be applied this signal is divided over the two input DAC s to get better performance Digital audio input The digital version of the PSC2 400d comes with an AES EBU digital audio input Incoming AES EBU is linked through directly to the output and send to the DSP through an asynchronous sample rate converter ASRC for jitter removal The ASRC chip scans its input for whichever signal is active When the module is set to Auto input select in the control panel on the computer the input source is automatically switched to digital when present If the digital audio is stopped the source will be switched back to analogue Controllers The PSC2 400 can only be controlled through USB When the module is powered on it will automati cally start up with the last settings All setting like volume and preset are stored after a change is made Clip limiter The PSC2 400 has a build in clip protection The module measures the supply voltage and uses this value for the limiter Figure 5 shows the response graph of the limiter The hold time is fixed to 100ms and the decay is set to 100dB s
8. The selection of any of these inputs can be automatic auto detect This means that when any of the inputs is presented there will be switched to this channel automatically This is done by setting the analogue input as the standard source During analogue in the other two inputs are scanned for any valid signal The first channel that contains any valid audio is selected and becomes the new input source But if you put in the USB cable but you want to use the analogue input you can force the analogue input to be used This can be done for both inputs When the module selects one of the inputs this is shown by the active input lights Under the Setup select part the system setup can be selected There can be chosen between 2 channel Bridged Master on the left Master on the left Master on the right Master on the right The channel assignment in analogue mode makes no difference because there is only one input channel User manual R5 PSC2 400 The last thing that can be controlled in this window is volume This can be done by setting the scroll bar to a desired position or by typing the value in the volume field the value is send when pressed enter When the presets are installed they may be selected the module will switch to the selected preset The presets can be filled in the Filter design section Filter design When you want to make some filters for ES control panel CR EISE your module they c
9. an be designed in the SEH Filter design Under view there can be switched between the control panel and the Rad_PSC_Setup Unit position S d i e Auto Detect Analogue filter design window 2Qchannel Left The following pages will give you a Analogue sesveBu widespread instruction of the possibilities of C AES C Bridged Right the program Group Volume gt Filter presets ic Preset C Preset C Preset2 C Preset4 M Mute a To a Figure 8 H Hypex DSP Filter Designer 4 DE ll x File Magnitude Impulse Step Channel 1 Tweeter Channel 2 Midrange Channel 3 Woofer Measured response M Function Second order shelving filte Eomo3MMAINWwootS3on dat Sa C Unity OOO Common Settings _ Biquad Section 2 co Q Factor 7 15 E SC m y i G C HPFI Gain 0 3 E Gain 4B p2 a I Invert SR S25 e a c3 ce C Shelf 2 SC Ce Shelf2 JM Show Filter kg Show Filtered Driver Laag S Asymmetric Shelf IZ Show Biquad V Show Sum r S D Boost Cut Figure 9 10 User manual R5 PSC2 400 Graph Area The magnitude tab shows the imported driver responses filters individual biquads individual fil tered driver responses and the sum Colour Function Blue thin Mea
10. an the on board fuse Replace the fuse only with the same tupe and rating 250V T5AL All parts enclosed by the dotted line below carry hazardous voltages This includes parts on the top and the bot tom of the board When the SMPS400 is mounted in a tight space there needs E to be at least 6mm clearance or a layer of insulation with a minimum thick Accessible live parts ness of 0 5mm between the top of the SAS transformer and the housing 10mm spacers to mount the SMPS onto the chassis This creates the mandatory 6mm clearance from the bottom side of the PCB to the chassis without the need for additional insulat ing material Standard the SMPS400 is supplied with n figure 13 Instructions For Installation Warning To reduce the risk of fire or electric shock do not ex pose this apparatus to rain or moisture Warning Disconnect the unit from the mains and allow all ca pacitors to discharge for 10 minutes before handling it this point Warning Please follow the mounting guidelines 1 Do not build the module on a conductive surface 2 Keep at least 60mm between the module front plate and the back of the enclosure see Figure 14 3 Do not lead any single insulated speaker cable below the indi cated line in Figure 14 With double insulated cable you are al
11. ber Figure 1 Overview of the connections on the front of the PSC2 400 Function USB input Select button Preset LED s Analogue Link 1 2 3 4 Clip detect LED 5 6 Analogue Audio Input 10 Power input 11 Power output 12 On Off switch h y p ex d User manual R5 PSC2 400 Digital version only 7 AES Though 8 AES 3 Input 9 AES input channel LED s Figure 2 Overview of the connections on the back of the PSC2 400 Function J16 Speaker J14 Speaker J17 Speaker J15 Speaker ZE IW IDN lech For bridged mode use J14 and J15 Signal on J14 is inverted Geen Ce e LS y8 1H Ls 1 mn Br H 4 H NY POX ciectronics E To UcD 7007 2k To UtD BA 2k From SMPS Ed sell AES Input coble Figure 3 Function 1 Jumpers placed is normal function Jumpers not placed lowers High channel gain with 10dB this must be corrected in Hypex Filter Designer under Tools gt Options Only available on hardware version PSC2 V3 and up User manual R5 PSC2 400 Ls Led n Digital receiver D gt m N m OO Optional digital input USB Figure 4 Block diagram T
12. e for master and slave module Under option download you can find Firmware update When this option is selected the user can select the new firmware file This is a complete hex file provided by Hypex no adapts can and may be made by the user After you selected the file you will enter the bootloader the device will reconnect and shows version 99 99 in the status bar Now you need to select the file again to load the new firmware into the module After the file is selected the update begins DO NOT DISCONNECT THE MODULE AT THIS POINT When the progress bar is filled the update is completed On a CRC error the update is automatically restarted after three errors the update is aborted Note that the new firmware does not have any filters installed so the filters must be reloaded with the correct values 14 User manual R5 PSC2 400 Safety precautions The PSC2 400 is supplied with a switched mode power supply The following chapter explains the safety precautions which have to be made for these kinds of products The SMPS4O0 operates at mains voltage and carries hazardous voltages at accessible parts These parts may never be exposed to inadvertent touch Observe extreme care during installation and never touch any part of the unit while it is connected to the mains Disconnect the unit from the mains and allow all capacitors to discharge for 10 minutes before handling it This product has no serviceable parts other th
13. ection should not be impeded by covering the SMPS400 apart from the end applica tions housing Qurwn Recommended Operating Conditions for the SMPS Item Symbol Min Typ Max Unit Notes High Line Input Voltage Ve 180 230 264 Vac Low Line Input Voltage Veep 90 115 132 Vac Line Input Frequency f 47 63 Hz General Performance data for the SMPS Item Symbol Min Typ Max Unit Notes Max Output Power D 600 S W See Note 1 Max Audio Output Power 20Hz Prate 400 g W See Note 2 into amplifier load Switching frequency Few 80 100 120 kHz Maximum power consumption D 800 W See Note 3 Note 1 Output Power delivered to a resistive dummy load generally the only specification supplied by other SMPS manufacturers Note 2 An audio amplifier actually draws twice the RMS power from the power supply At high fre quencies the secondary storage output caps are capable to provide this power At very low frequen cies however the SMPS is responsible for delivering this peak power to the amplifier Note 3 Limited by over current protection 16 di di hypex User manual R5 PSC2 400 lectronics oO Mains selection The PSC2 400 is factory set to operate at a mains voltage of 230Volt The user is able to change this setting to 115Volt Instructions must be followed Before changing the mains settings disconnect the unit from the mains and allow all ca pacito
14. em collectively on the vertical scale Truncating response data Switch to the impulse or step response graph Magnitude Impulse Step D 0 005 0 01 0 015 0 02 0 025 0 03 0 035 0 04 0 045 0 05 0 055 0 06 0 065 0 07 0 075 0 08 0 085 0 09 0 095 0 1 Truncate Figure 11 The first echo is apparent at 5ms Zoom in until you see only the anechoic portion of the impulse response Dragging the mouse left button down from left to right marks a zoom area Dragging from right to left zooms out Dragging with the right button down pans the plot left and right Magnitude Impulse Step mm MIMI TTT TTT TTT MINIM TTT TT TTT TTT TT TTT HA l kV ll bes LW DI 0 002 0 002 0 002 0 002 0 002 0 003 0 003 0 003 0 003 0 003 0 004 0 004 0 004 0 004 0 004 0 005 0 005 0 005 Truncate
15. lowed to lead the cables below this line Figure 14 15 User manual R5 PSC2 400 This symbol indicates the presence of hazardous voltages at accessible conductive terminals on the board Parts that are not highlighted in red picture above may carry voltages in ex cess of 140VDC Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Protect the power cord from being walked on or pinched particularly at plugs convenience recep tacles and the point where they exit from the application 7 Only use attachments accessories specified or approved by the manufacturer 8 Unplug this apparatus during lightning storms or when unused for long periods of time 9 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way liquid has been spilled or objects have fallen into the apparatus the ap paratus has been exposed to rain or moisture does not operate normally or has been dropped 10 Don t run any cables across the top or the bottom of the SMPS400 Apply fixtures to cables to ensure that this is not compromised 11 Observe a minimum distance of 6mm maintain clearance with all possible conducting parts housing etc All parts enclosed by the dotted line below carry hazardous voltages This includes parts on the top and the bottom of the board 12 Natural conv
16. nstalled When you switch to Bridged mode please be sure to connect your speakers like described in this manual Do note that the Firmware update differs to the AS2 100 firmware update After updating the firmware please use the combining PC software downloaded from our website www hypexshop com Firmware version 1 2 July 2011 Features 2x UcD4000EM amplifier Switch mode power supply Balanced audio in Balanced audio through loop Two channel active filtering Fully user configurable filters Firmware update by USB DSP supply voltage dependant clip limiter Digital version with AES EBU input Applications This module can be used for the following setups E Active 2 channel system E Active power sub woofer User manual R5 PSC2 400 And with 2 modules it is also possible to set up a 3 channel system with one module for the separate Subwoofer and a second module for the top in a 2 channel system User manual R5 PSC2 400 Connections 1 _ gt eo e 2 fr Select Sg Bins gt Preset 3 4 Preset 4 oo Clip Ea nk Ground pes i Signal Audio Signal Ground Input d Signal 7 gt AES Through Bb f AES 3 d Input 9 l gt R NY POX amna www hypex nl PSC2 400d UD cass D Technology A 110 115V 60Hz m 230V 50Hz C Output power per CH IMP 400W 40hms Internal fuse TSA 230V Mains through Unfused 10A Max Power in Power out ial num
17. on added R4 PSC2 V2 Explain button functions on digital version added 18 11 2010 Temperature protection added R5 PSC2 V3 High channel gain change added 12 07 2011 19
18. rs to discharge for 10 minutes before handling it Update the front plate with the updated information by checking the 115V or 230V setting J1 Mains Voltage Input Selection Connector type JST B2P VH Pin Function 1 2 Not Connected 230Vac Mains Connected 115Vac Mains CC P N eT ae Figure 15 17 User manual R5 PSC2 400 Technical data Supply voltage 230Volt AC 50Hz 10 switch able to 115Volt 60Hz Dimensions 142mmx330mmx55mm WxHxD Plate thickness 2 5mm Weight 1 1 kg Clearance gt 9 5mm 142 0 mm Ser Select Preset 1 Preset 2 Preset 3 Preset 4 Clip Ground Signal link Signal Audio Signal Ground Input Signal 158 0 mm 330 0 mm h y p ex electronics www hypex nl PSC2 400 UD Class D Technology 230V 50Hz C R Output power per CH IMP 400W 40hms Internal fuse TSA 230V Serial number 158 0 mm Power in Power out CAUTION RISK OF E cs DO NOT OPEN PRECAUTION RISQUE DE CH IE NE PAS OUVRIR Figure 16 Plate amp 2xUcD400Watt 18 User manual R5 PSC2 400 Revision PCB Version Description Date RO PSC2 V0 1 Initial Draft 21 04 2009 R1 PSC2 V0 2 Hard and software part added 06 10 2009 R2 PSC2 V1 Pinout description added 23 06 2010 Clip limiter added R3 PSC2 V1 Safety instructions added 29 06 2010 Installation instructions added Mains selecti
19. sured woofer response Green thin Measured midrange response Red thin Measured tweeter response Blue thick Filtered woofer response Green thick Filtered midrange response Red thick Filtered tweeter response Light blue thick Response of filter selected channel only Orange thick Response of selected biquad Black thick Sum response Having all of these on at the same time quickly produces an intractable mess so these graphs can be separately enabled or disabled in the filter definition area The impulse or step tabs show the time domain response of the imported drivers and the sum re sponse and are used to demarcate the anechoic portion Filter Definition Area The two channel tabs labelled Tweeter and Woofer are functionally identical The top left frame is used to import response files The select button opens a file The show checkbox turns display of the measured graph on or off The Common Settings box controls global gain for each channel delay and the visibility of plots The amplified channels have up to 12 biquads selected using the Biquad Section radio buttons in the middle To the right is a settings area specific to the type of function selected Unused biquads are set to unity The selected biquad is edited by selecting a function and setting relevant parameters Settings Window 2151 Measurement Sampling Rate Hz E0000 Processor Sampling Rate Hz fi 92000 Graph Smoothing octaves
20. t over their entire useable fre quency range The weapons of choice are shelving filters and boost cut sections A sharp peak followed by an equally sharp dip can be corrected using a second order shelving filter with a high Q Exercise care when deciding what to correct When correcting for diffraction errors do not exceed a Q of 3 lest the cure be worse than the ailment Errors that are caused inside the driver or internal cabi net resonances that emanate through the same diaphragm may be corrected ruthlessly provided the measurement has sufficient resolution to pin them down As a rule of thumb sharp dips are diffraction artefacts while sharp peaks are caused by the drivers themselves Exceptions are room resonances if the response is not correctly truncated and diffrac tions on repetitive patterns 13 User manual R5 PSC2 400 The second step is designing the actual crossover filters All the usual strategies work Delaying higher frequency drivers with respect to lower frequency ones is a powerful alternative to using asymmetric slopes and yields substantially improved coherence through the crossover region Download Under download the user can press load DSP to download its designed filters to the module but only for the current used preset Firmware update Every module has the ability to update its firmware when Hupex provides a new firmware version The firmware can be simply updated by USB the sam
21. wo channel active amplifier with DSP filter control Description The PSC2 is a plate amp for use in powered speaker systems As an active speaker controller a PSC2 can form the basis of a powerful active two way monitor Figure 4 shows the audio path of the PSC2 The module has two 400Watt UcD modules implemented and is also available with a digital audio input AES EBU called the PSC2 400d version The supply voltage is provided by a Switched Mode Power Supply SMPS400 module also a module from Hypex Electronics A PC controls the PSC2 through the USB port This connection is used to upload the configuration and filter settings It will also be possible to update the firmware through USB Audio performance data MBW 20kHz unless otherwise noted All filters set to unity Noise levels unweighted Item Symbol _ Min _ Typ Max Unit Notes Input level Vin 18 dBu Vin max Output level LS1 400 W Into 4 Ohms LS2 400 W Into 4 Ohms Signal Noise SNR 101 dB ADC 107 dB DAC Total harmonic distor THD N 90 dB Without UcD400 tion Noise DSP sampling rate Fs 48 kHz Delay per channel 0 0 15000 us Set in software Supported digital sampling Fs 32 44 1 48 88 2 96 kHz All input rates con 6 User manual R5 PSC2 400 rates 192 verted to 48kHz Gain 16 dB volume at OdB Analogue Latency 1 12 ms AES Latency 3 58 ms Note Total power for the P
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