Audio Pro Sub+ MkII User manual

audio pro
Service manual
SUB+MKII S-GB1001
SUB+MKII
Including powered Subwoofer
featuringB5amplifier
Audio Pro AB. Box 1015. S-251 10 HELSINGBORG
SWEDEN
audio pro
ace-bass
TECHNOLOGY
Australia 508491
Great Britain 1565858
Canada 1083490
Sweden 7603585.6
USA 4.118.600
World patents:

Important note when repairing power amp pcb on B.5 or B.6 amp’s.
Before you perform soldering / unsoldering or DC resistance measuring on power
amp pcb, connector CN03B must be disconnected. Otherwise unwanted discharge
might cause damage on semiconductors.

Technical data Sub+ MkII
Enclosure: 100W powered, bass reflex.
Drive units, Woofer: 6 ½” long throw
Crossover -Hi Pass: 100Hz
-Lo Pass: 50 -100Hz 12dB/octav
Freq.range: 30-100Hz
Power requirements: AC 230V 50Hz
Power consumption (max): 200W
Dimensions(WxHxD mm): 280v290v300

Adjustment of negative output resistance in Sub+ MkII amplifier (B5)
Set jumper “Set ” on power amp pcb in Trim position.
Connect a signal generator to input and an AC voltmeter to speaker output.
Set level and frequency controls to maximum (fully clockwise) and switch amplifier on.
Set signal generator to 50 Hz and adjust level until AC voltmeter on speaker output reads
1.00 V under no load condition.
Connect a resistor 8.00 Ohm (1%) to speaker output.
Adjust trim potentiometer VR202 until AC voltmeter reads 6.27V.
Switch amplifier off and set jumper in Run position.
Important note!
This is an amplifier using ACE Bass technique. It can only be used with the driver
to which the specific ACE Bass circuit is designed.

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Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
SUB+ MKII AMP
ATR-2SB817E TR 2SB817E (A1492) Q208
ATR-2SC3421 TR 2SC3421 Q209
ATR-2SD1047E TR 2SD1047E (C3856) Q207
M11-P605-02 VR-KNOB 18*16 FOR VR
WPC-7007 POWER CORD 6FT VDE (AL-104) BAK PANEL
EMX-7005 AC CORD BUSHER ST-100N HEYCO BAK PANEL
FUH-1006 FUSE HOLDER 5*20MM VDE/UL OP520 PANEL
FUS-01-1001SC FUSE VDE/UL 5*20 1A/250V TSD FUSE HOLDER
SWK-7009 SWROCK R-30NS RH SERIAL BAK PANEL
VRR-7045 VR B20K R1610G-2A1-B20K VR202
VRR-G7006 VR 50K R1610N-2A7-A50K VR101
XFM-3013 XFORMER(K29-2021C) AC 28.0*2 FOR B.5 T402
ECW-400V102K CAP Y-SUPPRESSOR 0.001UF/400V +-10% POWER -SW
ADL-6S702 LED RED 5MMD LED01
EMX-1018 LED BUSHING 5MM BLU LED
WAS-7368 WIRE ASS'Y 1P RCA PLUG*2 6M BAK RCA CABLE
ADL-6S701 LED BLUE 5MMD
TERMINAL SPEAKER LEVEL
ECJ-100A107K CAP ELNP 100V 100UF +-10%(A TYPE) SPK, LEVEL
TML-7021 TERMINAL SPEAKER CJ-9011-07-0200A 1,2--7,8

Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
SUB+ MKII PRE AMP PCB
ERB-202K220J RES MO 2W K 22 +-5% H=10mm ø5.0*16.0 R135
ERB-501Y102J RES MO 1/2W Y 1K +-5% R111,R112
ECZ-063T474J-1 CAP MTLZ (BF014D) 63V 0.47uF +-5% C120
ECE-050T106M-1 CAP ELE 50V 10uF +-20% 85°C C115,C117,C113,C121-124
ECE-0063V478M-A1 CAP ELE 6.3V 4700uF +-20% JUNFU C114
ECE-050T107M-1 CAP ELE 50V 100uF +-20% 85°C C131
ECD-050T470M CAP CER 50V 47P +-20% C105
ECM-100T102J CAP MYLAR 100V 0.001uF +-5% C101,C116
ECM-100T333J CAP MYLAR 100V 0.033UF +-5% C104,C103
ECM-100T104J CAP MYLAR 100V 0.1uF +-5% C127,C128
ECM-100T124J CAP MYLAR 100V 0.12UF +-5% C111
ECM-100T683J CAP MYLAR 100V 0.068uF +-5% C112
ERM-121Y1002F RES MF 1/8W Y 10K +-1% R103
ERM-121Y4303F RES MF 1/8W Y 430K +-1% R107-R110
ERM-121Y1502F RES MF 1/8W Y 15K +-1% R105,R106
ERM-121Y1802F RES MF 1/8W Y 18K +-1% R113,R114
ERM-121Y4701F RES MF 1/8W Y 4K7 +-1% R115
ERM-121Y3302F RES MF 1/8W Y 33K +-1% R139
ERM-121Y6802F RES MF 1/8W Y 68K +-1% R119
ERM-121Y2701F RES MF 1/8W Y 2K7 +-1% R127
ERM-121Y2001F RES MF 1/8W Y 2K +-1% R127A
ERC-121Y393J RES CF 1/8W Y 39K +-5% R142
ERC-121Y221J RES CF 1/8W Y 220 +-5% R101
ERC-121Y272J RES CF 1/8W Y 2K7 +-5% R131
ERC-121Y473J RES CF 1/8W Y 47K +-5% R151
ERC-121Y103J RES CF 1/8W Y 10K +-5% R129,130,132,146,147,148
ERC-121Y104J RES CF 1/8W Y 100K +-5% R150

Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
ERC-121Y101J RES CF 1/8W Y 100 +-5% R116
ERC-121Y102J RES CF 1/8W Y 1K +-5% R143
ERC-121Y562J RES CF 1/8W Y 5K6 +-5% R134
ERC-121Y223J RES CF 1/8W Y 22K +-5% R123,R121B
ERC-251Y102J RES CF 1/4W Y 1K +-5% R128
CN1-S25402-702 SHORT PIN 2P NEEDLE 2P
CN1-S25402-703 NEEDLE 2P TIME
ATR-2SC1815*TAP TR 2SC1815 Q103,Q105
ATR-2SK363 TR 2SK363 Q101
ATR-2SD655E TR 2SD655E Q104
AIC-TL072 IC DVAL OP AMP TL072 IC101,102,103
AIC-NJM2072D IC SIGNAL SENSOR NJM2072D IC105
ADZ-UZ3.3BM DIODE ZENER UZ 3.3BM 1/2W ZD101
SWS-G7002 TOGGLE SW T8019L-TECQ SW102
JK3-L01-709 RCA JACK 1P (RCA-081) SILVERED 1P RCA JACK

Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
SUB+ MKII AMP PCB
ADZ-UZ3.3BM DIODE ZENER UZ 3.3BM 1/2W ZD201
ADD-IN4148*TAP DIODE SWITCH IN4148 52mm D201,D202
ECE-025T107M-1 CAP ELE 25V 100uF +-20% 85°C C207
ECE-050T106M-1 CAP ELE 50V 10uF +-20% 85°C C219,C220,C213
ERC-121Y333J RES CF 1/8W Y 33K +-5% R235
ERC-121Y473J RES CF 1/8W Y 47K +-5% R201
ERC-121Y562J RES CF 1/8W Y 5K6 +-5% R233,R234,R236,R203,R244
ERC-121Y224J RES CF 1/8W Y 220K +-5% R237
ERC-121Y332J RES CF 1/8W Y 3K3 +-5% R239,R240
ERC-121Y103J RES CF 1/8W Y 10K +-5% R206
ERC-251Y331J RES CF 1/4W Y 330 +-5% R208
ERC-251Y221J RES 220 OHM 1/4W Y +-5% R207
ERC-251Y471J RES CF 1/4W Y 470 +-5% VR201,R242
ERC-251Y222J RES, 2K2 OHM 1/4W Y +-5% R211
ECD-050T221M CAP CER 50V 220P +-20% C202,C203,C204
ECD-050T222M CAP CER 50V 0.0022uF +-20% C201
ECD-050T470M CAP CER 50V 47P +-20% C214
ECD-100T104M CAP CER 100V 0.1UF +-20% C205
ERB-251Y221J RES MO 1/4W Y 220 +-5% R213
ERB-251Y331J RES MO 1/4W Y 330 +-5% R204,R205
ERB-251Y560J RES MO 1/4W Y 56 +-5% R209,R210
ERB-251Y2R2J RES MO 1/4W Y 2.2 +-5% R214,R215

Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
ERB-302KR22J RES MO 3W K 0.22 +-5% H=10mm ø6.5*17.5 R216,R217
ERD-502K0R1J RES FR 5W K 0.1 +-5% R241
ERV-S06-501B01 VR SEMI ST S 6MMD 500V ERECTION 90° VR202
CN1-S25403-702 NEEDLE 3P SET1
CN1-S25402-702 SHORT PIN 2P
ERM-251Y4702F RES MF 1/4W Y 47K +-1% R243
ERM-121Y1001F RES MF 1/8W Y 1K +-1% R227
ERM-121Y1002F RES MF 1/8W Y 10K +-1% R224,R221
ERM-121Y1802F RES MF 1/8W Y 18K +-1% R228
ERM-121Y2701F RES MF 1/8W Y 2K7 +-1% R232
ERM-121Y7500F RES MF 1/8W Y 750 +-1% R223
ERM-121Y1801F RES MF 1/8W Y 1K8 +-1% R226
ERM-121Y4701F RES MF 1/8W Y 4K7 +-1% R231
ERM-121Y3601F RES MF 1/8W Y 3K6 +-1% R225
ERM-121Y3401F RES MF 1/8W Y 3K4 +-1% R222
ERM-121Y8202F RES MF 1/8W Y 82K +-1% R229
ERM-251Y5602F RES MF 1/4W Y 56K +-1% R230
ECZ-063T473J-1 CAP MTLZ 63V 0.047UF +-5% C210
ECZ-063T474J-1 CAP MTLZ (BF014D) 63V 0.47uF +-5% C208
ATR-2SC1815*TAP TR 2SC1815 Q211,Q201
ATR-2SA1015*TAP TR 2SA1015 Q210,Q202
ATR-BF422 TR BF422 TAPING Q204
ATR-BF423 TR BF423 TAPING Q203
ATR-2SA1358 TR 2SA1358 Q206
ATR-2SC3421 TR 2SC3421 Q205
AIC-TL071 IC TL071(TI) IC201
AIC-TL072 IC DVAL OP AMP TL072 IC202

Parts list Sub+ MKII Europe 230V/50Hz
PART NUMBER DESCRIPTION SPECIFICATION REMARK
B.5 ZENER CIRCUIT
ATR-2SC3421 TR 2SC3421 Q301
ADD-IN4004*TAP52 DIODE RECTI IN4004 TAPING 52mm D306,D307
AIC-NJM7815FA IC NJM 7815FA IC304,IC306
AIC-NJM7915FA IC NJM 7915FA IC303, IC305
ECE-025T227M-1 CAP ELE 25V 220uF +- 20% 85C C301-308
ERC-121Y473J RES CF 1/8W Y 47K +-5% R304
ERC-121Y103J RES CF 1/8W Y 10K +-5% R303
ERB-202K101J RES MO 2WK 100 +-5% H=10mm ø5.0*16.0 R301
ERB-202K151J RES MO 2W K 150 +-5% H=10mm ø5.0*16.0 R302
B.5 POWER PCB
ADB-KBU6G DIODE BRIDGE KBU6G 6A/400V D403
ADB-W02 DIODE BRIDGE W02 1.5A/200V D401,D402
ADD-IN4004*TAP52 DIODE RECTI IN4004 TAPING 52mm D404
ARL-01-7002 RELAY 12V 1P1T MIT-SH-112LM(GOODSKY) RE01
ECE-025T107M-1 CAP ELE 25V 100uF +-20% 85°C C401-404
ECE-063V688M-2 CAP ELE 63V 6800uF+-20% 105°C C409,C410
ECD-100T104M CAP CER 100V 0.1UF +-20% C406,C405
ECW-275V104K X-CAP 14104 0.1uF/275V C407
ECW-400V102K CAP Y-SUPPRESSOR 0.001UF/400V +-10% C408
XFM-3012 XFORMER (K29-2020C) AC 15.0V*2 T401