Infinity-Basslink-sub-sm 维修电路原理图.pdf

Models:BassLinkBassLink (Remote Level Control Ready)BassLink XPowered Automotive SubwooferSERVICE MANUALInfinity Systems, Inc.250 Crossways Park Dr.Woodbury, New York 11797Rev 0 10/2001RadioFans.CN 收音机爱 好者资料库ContentsALL MODELS BASSLINKSPECIFICATIONS .2CONNECTIONS/APPLICATIONS 3TUNING BASSLINK.6TROUBLESHOOTING 7TEST SETUP PROCEDURE .8BASSLINK (Original version without Remote Level Control jack)SERVICE BULLETIN INF2000-03 10EXPLODED VIEW .11MECHANICAL PARTS LIST .12BLOCK DIAGRAM .13PCB DRAWINGS .14ELECTRICAL PARTS LIST 24SCHEMATICS .29PACKAGING .31BASSLINK or BASSLINK X (Versions with Remote Level Control jack)EXPLODED VIEW .33MECHANICAL PARTS LIST .34BLOCK DIAGRAM .35PCB DRAWINGS .36ELECTRICAL PARTS LIST 43SCHEMATICS .49PACKAGING .53ALL MODELS BASSLINKINTEGRATED CIRCUIT DIAGRAMS .54RadioFans.CN 收音机爱 好者资料库1Basslink/Basslink XSpecificationsBASSLINK/BASSLINK w/ Remote Level Control/BASSLINK XAmplifier Power: 200W RMS 10% THD120W RMS 1% THDFrequency Response: 20Hz 120HzTHD 30W1.0%Input Sensitivity: 50mV 4VLine-Level Input1V 16V Universal InterfaceMaximum Input Sensitivity7mV Line-Level Input(Gain level Max)120mV Universal InterfaceCrossover Frequency: 50Hz 120HzCrossover Slope: 12dB/octaveBass Boost: 6 to +3 dB 40HzSignal-Noise Ratio65dB (Wide band w/ 22K LPF)Max Gain Level Noise3.0 mV Basslink(Level pot Max.)1.8 mV Basslink w/ Remote Level Control1.8 mV Basslink XMax Gain Level Noise2.0 mV Basslink(Level pot Min.)1.7 mV Basslink w/ Remote Level Control1.7 mV Basslink XAuto On/Off TimeFrom 1 1/2 to 5 min.(depending on last input signal level)Gain boost (min to max)9.0 dBFuse: 25A Basslink20A Basslink w/ Remote Level Control20A Basslink XMaximum Current Draw: 12AQuiescent Current Draw: 800 mAProtection Circuits:Over/Under voltage17.5, 8.5 VDCTemperature95? CShort Circuitw/ 0.1 ? resistorDC OffsetYesDimensions: 14-1/2 x 12-1/2 x 8-1/2 (L x W x H)(369mm x 318mm x 216mm)Weight16 lbs./7.2kgInfinity continually strives to update and improve existing products, as well as create new ones. The specifications andconstruction details in this and related Infinity publications are therefore subject to change without notice.23Connect power to BassLink, as shown in Figure 5.Also observe these installation tips:Use at least #12 AWG wire for the +BATT (+12 Vdc) and GND (ground) connections. Ifneeded, use at least a #20 AWG wire for theREM (remote) connection.Route all power wires through a grommet inthe vehicles firewall. If a factory grommet isunavailable, install one.Connect a short GND wire from BassLink to thenearest bare metal surface. For a good connec-tion, scrape away paint from the metal surfaceand use a screw with a lock (star) washer.Figure 5. Power connections for BassLink.Install a fuse holder with a 20 A fuse within 18of the battery + terminal (see Figure 5).The REM connection requires +5 to +12 Vdcsignal for BassLink to turn on remotely. Mosthead units with preamp outputs provide thisremote voltage signal. For speaker-level appli-cations, a remote connection is not required,since BassLinks Auto Turn-On feature willsense voltage on the speaker wires to automatically turn on BassLink.IMPORTANT:To enable BassLinks Auto Turn-On feature, set AUTO TURN-ON to theAUTO position (see Figure 12 on page 6). POWERCONNECTIONSBassLink is equipped with four line-level (RCA)inputs and four speaker-level inputs. Any combina-tion of line-level and speaker-level inputs may beused to provide nonfading bass when connected toa head unit with four outputs.Figure 6. BassLink audio connections for a headunit with two line-level or subwoofer (RCA) outputs.To help you plan your installation, we includedfive system applications in Figures 6 through 10on pages 3 through 5. For more system ideas, seeyour authorized Infinity car-audio dealer.Note: The applications show the optional remoteSUB LEVEL control which installs under the dash-board for easy in-car bass level adjustments. APPLICATIONS? ?Chassis Ground(Bare Metal)BassLink (right side panel)RemoteTurn-OnFuse 20 ASource Unit18Battery? ? ?LF Speaker+RF SpeakerLR SpeakerSubwoofer or Line-Level Outputs(on Source Unit) Sub LevelControl(optional) RLRR Speaker+Source UnitBassLink (right side)Sub Level Control (optional)+RCA Stereo Cables(not supplied)Note: For the original version Basslink without the AUTO OFF/ON switch and Optional SubLevel Control, references to these items in the Connections, Applications and Controls sectionscan be ignored - all other information is valid.4Figure 7. BassLink audio connections for a headunit equipped with four line-level (RCA) outputs. APPLICATIONS(CONTINUED)Figure 8. BassLink audio connections for a headunit equipped with two line-level (RCA) outputsand two speaker-level outputs. ? ? ?LF Speaker+RF SpeakerLR SpeakerLine-Level Outputs(on Source Unit) Sub LevelControl(optional) RFLRRRLFRR Speaker+Source UnitBassLink (right side)Sub Level Control (optional)+RCA Stereo Cables(not supplied)? ? ?LF Speaker+RF SpeakerLR SpeakerLine-Level Outputs(on Source Unit) Sub LevelControl(optional) RF LFSpeaker Wires(spliced) RR LRRR Speaker+Source UnitBassLink (right side)Sub Level Control (optional)VIOLETGREEN/BLACKVIOLET/BLACKGREEN+RCA Stereo Cables(not supplied)Splices(not supplied)Splices(not supplied)5Figure 9. BassLink audio connections for a headunit equipped with four speaker-level outputs. APPLICATIONS(CONTINUED)Figure 10. BassLink audio connections for a headunit equipped with two speaker-level outputs. ? ? ?LF Speaker+RF SpeakerLR SpeakerSub LevelControl(optional) Speaker Wires(spliced) RR LRRR Speaker+Source UnitBassLink (right side)Sub Level Control (optional)VIOLETGREEN/BLACKVIOLET/BLACKGREENSpeaker Wires(spliced) RF LFGRAYWHITE/BLACKGRAY/BLACKWHITE+Splices(not supplied)Splices(not supplied)? ? ?L Speaker+R SpeakerSub LevelControl(optional) Speaker Wires(spliced) RL+Source UnitBassLink (right side)Sub Level Control (optional)GRAYWHITE/BLACKGRAY/BLACKWHITE+Splices(not supplied)Splices(not supplied)6BassLink provides several controls and indicatorsthat simplify sonic integration with virtually anyvehicles unique acoustic properties. They arelocated on the front and side panels, as shown inFigures 11 and 12.Figure 11. BassLink controls on the front panel. POWER LED:This indicator will glow red whenBassLink is operational.GAIN Control: Use this control to adjust the rela-tive volume (loudness) of BassLink with respectto the other speakers in the vehicle.CROSSOVER: Use this control to adjust theamount of high-frequency information present inBassLinks output. A lower value signifies lesshigh frequencies will be amplified. BASS BOOST: Use this control to correct any perceived peak or dip in the bass response (typically around 40Hz in most vehicles). Set thecontrol to any value between 6dB and +3dB,according to what sounds best.Figure 12. BassLink controls on right side panel. PHASE Control: Use this switch to reverse thephase of BassLinks output with respect to itsinput. Choose the position (0 or 180) thatsounds the best.Note: Depending on BassLinks orientation andlocation in a vehicle, reversing the phase maymay (or may not) increase or decrease theamount of upper bass being reproduced. AUTO TURN-ON: For speaker-level connections,use this switch to activate (or deactivate) BassLinksautomatic turn-on circuit. For most speaker-levelapplications, slide the switch to AUTO. However, ifyour system produces false turn-on signals or usesa remote (REM) connection, slide the switch to OFF . REMOTE GAIN CONTROL: Use this RJ-11 jack toconnect the optional remote SUB LEVEL control.SERVO LED:This indicator glows green when thesubwoofer is at maximum excursion and theamplifier is modifying the output to maintainmaximum performance. Be sure to monitor thisindicator during BassLink setup (see TuningBassLink). When properly tuned, the SERVO LEDshould light momentarily during high-level basstransients. Avoid adjustments that cause the LEDto remain lit for extended periods.CONTROLS ANDFUNCTIONS1. Make sure the head unit is off and its volumecontrol is set to minimum. 2. On BassLinks front panel, initially set all con-trols to their midpoint positions, as shown inFigure 11. On BassLinks side panel, initially setPHASE to 0 and AUTO TURN-ON to AUTO, asshown in FIgure 12.3. Turn on the head unit and play a favorite musictrack that has substantial bass. Set the volumecontrol to 75 percent of the total output(approximately 3 oclock on rotary controls). 4. Adjust the GAIN control clockwise until theSERVO LED (on BassLinks side panel) beginsto flash with each bass note but doesnt stay lit continuously.5. Listen to your system, making a mental note of the amount of upper bass being reproduced.6. Switch the PHASE control to 180 and listenagain for upper bass content. There may bemore upper bass, less upper bass, or nochange at all. The position that provides themost upper bass is correct, but choose eithersetting according to your taste.7. Adjust the CROSSOVER control clockwise or counterclockwise until you hear only low-fre-quency information. For example, you shouldNOT hear any vocals coming from BassLinkwhen seated in the normal listening position. 8. Adjust the BASS-BOOST control clockwise orcounterclockwise to suit your taste. 9. Recheck the SERVO LED to make sure its flashing in time with the bass but is not lit continuously. If it is lit continuously, adjust theGAIN control counterclockwise until theSERVO LED only flashes.Note: In most cases, the above steps will providesatisfactory tuning. However, the actual processmay require several readjustments of each control,since the settings will interact with each other. If necessary, consult your authorized Infinity car audio dealer for help in tuning your system.TUNINGBASSLINKPowerGainMinMax50 HzCrossover120 HzBass Boost-6 (dB) +3? ?(Blue on Basslink X)Basslink/Basslink XTROUBLESHOOTING PROBLEM:POWER LED not lit.CAUSES and SOLUTIONS:1. Fuse is blown and needs replacement.2. Head unit not functioning properly. Checkremote voltage, and power, ground orremote connections. PROBLEM:POWER LED is lit but there is no bass.CAUSES and SOLUTIONS:1. Inputs are not connected. Check connections.2. Head-unit fader control is not set properly.Adjust head-unit fader control to feed audiosignals to BassLink. PROBLEM:BassLink sounds muddy or distorted.CAUSES and SOLUTIONS:1. Gain is set too high and SERVO LED is litconstantly. Readjust GAIN control (seeTuning BassLink on the previous page).2. Bass is set too high. Readjust BASS BOOSTcontrol (see Tuning BassLink on the previouspage).3. Head-unit output is distorted or blown. Seeyour authorized Infinity car audio dealer. PROBLEM:No output from BassLink when head-unitfader control set to front or rear (in a 4-channelconnection).CAUSE and SOLUTION:Input connections are improperly wired. Verify allconnections (see Applications section)APPLICABLE TO BASSLINK WITH LEVELCONTROL JACK AND BASSLINK X ONLY: PROBLEM:BassLink turns on before head unit is completely onand produces a “thump” sound.CAUSE and SOLUTION:For speaker-level connections, head unit isproducing a false turn-on signal. On BassLinksside panel, slide AUTO TURN-ON to OFF. PROBLEM:BassLinks POWER LED remains on after headunit is turned off.CAUSE and SOLUTION:For speaker-level connections, this is normaloperation when AUTO TURN-ON is set to ON.BassLink will remain on another 5 to 10 minutesafter sensing that audio signals are not presentbefore shutting down. If you prefer immediate shut-down, set AUTO TURN-OFF to OFF.7 BassLink/BassLink X8Equipment needed: Function/signal generator/sweep generator Integrated/Power Amplifier (capable of driving 2 ohm loads) 14 volt DC power supply 20A or greater with current-limit protection Multimeter RCA cable, Universal Interface molex connector, Speaker cablesGeneral Unit Function (UUT = Unit Under Test)Switch/Controls:GAIN control full counterclockwise (Min)CROSSOVER full clockwise (120 Hz)BASS BOOST at center (12 oclock)PHASE, AUTO-ON - either position1)From the signal generator, connect one line level (RCA) cable to the Basslink Line Level Input jacks (Front,L/R) on the UUT. Usea Y-cable from a mono source if necessary to connect to both inputs. 2)Turn on generator, adjust to 100mV, 40 Hz.3)Attach 14v DC source to Power terminals on UUT, including +14v to Remote connection. Red LED should ON. Turn LEVEL con-trol full clockwise (Max)4)Bass response should be heard and felt. Green servo light should not be illuminated. 5)Adjust the generator to 175mV, 40 Hz. Green servo light should turn ON. DO NOT DRIVE THE BASSLINK FOR MORE THAN AFEW SECONDS AT THIS LEVEL OR THE UUT MAY GO INTO THERMAL PROTECTION6)Turn off generator, turn GAIN control fully counterclockwise, disconnect RCA cable.7)Optional: Attach the Universal Interface molex connector (Infinity part# 162A600D001) to the Basslink Universal Interface Jack(Front,L/R) on the UUT. Both front/rear negative wires should be twisted and connected together; positive wires should be treatedlikewise. Cables should be connected to an integrated amplifier fed by the signal generator.8)Turn on generator and adjust so that speaker level input at the amplifier is 275mV, 40 Hz. Turn GAIN control full clockwise.9)Bass response should be heard and felt. Green servo light should not be illuminated.10) Adjust the generator to 500mV, 40 Hz. Green servo light should be ON. DO NOT DRIVE THE BASSLINK FOR MORE THAN AFEW SECONDS AT THIS LEVEL OR THE UUT MAY GO INTO THERMAL PROTECTIONSweep Function1)Follow steps 1-3 above, using a sweep generator as a signal source adjust the generator to 50mV, 40 Hz.2)Sweep generator from 20Hz to 300Hz. Listen for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard,test woofer according to the instructions below.Driver Function1)Remove amplifier from the enclosure; (instructions in bulletin INF2000-03 page 8); detach connector M101 two-wire molex on themain amplifier PCB.2)Check DC resistance of woofer; it should be 2.3 ohms 10%3)Connect a pair of speaker cables to woofer terminals. Cables should be connected to an integrated amplifier fed by a signal gen-erator. Turn on generator and adjust so that speaker level output is 6.0V.4)Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises.SIGNALGENERATORAMPLIFIERAC VOLTMETER (10V)BASSLINKUNDER TEST00432-+14V DCTest Set Up ProcedureBasslink(Original version without remotelevel control jack)9Infinity Systems Inc. 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400Service Bulletin Service Bulletin INF2000-03 - October 2000Warranty labor rate: MINOR repair To:All Infinity Service Centers Model: Basslink (version w/o AUTO-ON switch or REMOTE GAIN) Subject: Unit will not turn offIn the event you receive a Basslink subwoofer with the complaint: “The unit will not turn off, even whenthe audio signal is removed, and the Remote power connection is switched off” (indicated by theBasslinks red LED remaining ON), perform the following modification:1)