Jbl s 412 p mk2 service manual
This is the 24 pages manual for jbl s 412 p mk2 service manual.
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Extracted text from jbl s 412 p mk2 service manual (Ocr-read)
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- CONTENTS - BASIC SPECIFICATIONS ………….….……..…………..1 DETAILED SPECIFICATIONS ………..……..…………..2 CONNECTIONS…………….……………………....…..…4 CONTROLS ……..……………….…..……....…….….…..6 BASIC TROUBLESHOOTING..….……….………………7 AMPLIFIER ACCESS….……………….….……………....8 S412PII AMPLIFIER BLOCK DIAGRAM.….………..…..9 S412PII W IRING/PASSIVE SCHEMATIC….………….10 S412PII MECHANICAL/PACKING PARTS LIST ….….11 S412PII EXPLODED VIEW..………………….…. …….12 AMPLIFIER EXPLODED VIEW ..…………….………….13 IC DIAGRAMS………………..………………..………….14 S412PII ELECTRICAL PARTS LIST ..……….…….…..15 P.C.B. DRAW INGS….………..………………...….…….18 S412PII SCHEMATICS………..……………..……….….20 S412PII PACKAGING………..……………..……..….….23 JBL S412PII SPECIFICATIONS Max Recommended Amplifier Power: 250 W atts* Subwoofer Amplifier Power: 200 W atts Nominal Impedance 8 ohms Sensitivity 92dB Frequency Response 32Hz – 20kHz (±3dB) Crossover Frequencies 250Hz, 700Hz, 3500Hz High-Frequency Driver: 1" Pure Titanium Dome, shielded Midrange Frequency Driver: 4" PolyPlas™ Rubber surround, shielded Midbass Frequency Driver: 6" PolyPlas™ Rubber surround, shielded Low Frequency Driver: 12" PolyPlas™ Rubber surround, shielded Dimensions (H x W x D): 44 x 14 ¾ x 16 1/16 (17 with grille) 1118 x 375 x 408mm (432mm with grille) W eight (each): 100lbs/45.5kg * The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. W e do not recommend sustained operation at these maximum power lev els.
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JBL S412PII -120VAC 150W Powered Sub/ Plate Amp LINE VOLTAGE Yes/N o Hi/Lo Lin e Nom. Uni t Note s US 120vac/60Hz Yes 108-132 120 Vrms Normal Operation EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required Asia 100vac/50Hz No N/A 100 Vrms Normal Operation Parameter Specification Unit QA Test LimitsConditions Notes Am p Sectio n Type (Class AB, D, other) G n/a n/a Load Impedance (speaker) 4 Ohms n/a Nominal Z-curve required Rated Output Power 150 Watts 130 1 input driven 130 W nominal due to limiter non-linearity at high power THD @ Rated Power 0.1 % 1 22k filter 130 W THD @ 1 Watt 0.3 % 0.5 22k filter DC Offset 10 mV-DC 20 @ Speaker Outputs Damping factor >150 DF 100 Measured at amplifier board Measured at the speaker connector. 130 Watts @ THD < 0.08 % @ 50 Hz >75 50 Measured at speaker cable In put Sensitivit y Input Frequency 30 Hz 30 Nominal Freq. LFE input 1.05 Vrms ±2dB To 140 Watts Speaker/Hi Level Input 23.66 Vrms ±2dB To 140 Watts Si gnal to Nois e SNR-A-Weighted 100 dBA 90 relative to rated power A-Weighting filter SNR-unweighted 70 dBr 70 relative to rated power 22k filter SNR rel. 1W-unweighted 65 dBr 60 relative to 1W Output 22k filter Residual Noise Floor 1 mVrms 5 Volume @max, using RMS reading DMM/VOM (or A/P) Residual Noise Floor 1.5 mVrms(max) 4 Volume @max, w/ A/P Swept Bandpass Measurement (Line freq. + harmonics) In put Im pedanc eLine Input 20k ohms n/a Nominal Speaker/Hi Level Input 10k ohms n/a Nominal Filter s Speaker in LP 2nd order fixed Fixed Subsonic filter (HPF) LFE Low pass 2nd order Fixed LFE input driven only Limiter THD at Max. Output Power n/a n/a functional Maximum Output Power Maximum THD as a result of limiting. Features-- Auto - On selection switch YES -- functional Refer to ATO section LED On-Off switch YES -- functional Dual LED indicator Volume pot Taper (lin/log) LOG -- functional A Taper In put Confi guratio n Line In LFE YES -- functional Single RCA jack Spkr/Hi Level In YES -- functional Si gnal Sensin g (ATO ) Auto-Turn-On (yes/no) YES functional Auto - on selection switch in Auto ATO Input test frequency 30 Hz functional " ATO Level LFE Input 4 mV functional " ATO Level Speaker in 100 mV functional " ATO Turn-on time 5 ms functional Amp connected and AC on, then input signal applied Auto Mute/ Turn-OFF Time 15 minutes 17 T before muting, after signal is removedMaximum Power on Dela y tim e 3 sec. 4 AC Power Applied Transients/Po ps ATO Transient 5 mV-peak n/a @ Speaker Outputs Turn-on Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from OFF to ON Turn-off Transient 50 mV-peak 2v-pp @ Speaker Outputs AC Line cycled from ON to OFF