DOWNLOAD JBL SUB 150P (serv.man2) Service Manual ↓ Size: 3.77 MB | Pages: 47 in PDF or view online for FREE

tuRning the subwoofeR on and off
Set the subwoofer’s Power Switch to the “On” position. The subwoofer will 

automatically turn itself on when it receives an audio signal, and it will go 

into Standby mode after it has received no audio signal for approximately 

10 minutes. The subwoofer’s LED will glow green when the subwoofer is 

on and will glow red when the subwoofer is in Standby.

If you will not be using the subwoofer for an extended period – for 

instance, if you’re going on vacation – set the Power Switch to the “Off” 

position.

subwoofeR adJustments: cRossoveR contRol
NOTE: The Crossover control functions only 

when the Input Mode switch is in the “Normal” 

position. 

The Crossover control adjusts the subwoofer’s 

built-in low-pass filter crossover between 

50Hz and 200Hz. The higher you set the 

Crossover control, the higher in frequency the 

subwoofer will operate and the more its bass will “overlap” that of the 

satellite speakers. This adjustment helps achieve a smooth transition of 

bass frequencies between the subwoofer and the satellites for a variety of 

different rooms and subwoofer locations.

To set the Crossover control, listen for the smoothness of the bass. If 

the bass seems too strong at certain frequencies, try a lower Crossover 

control setting. If the bass seems too weak at certain frequencies, try a 

higher Crossover control setting.

subwoofeR adJustments: volume
Use the Level control to set the subwoofer’s 

volume. Turn the knob clockwise to increase 

the subwoofer’s volume; turn the knob 

counterclockwise to decrease the volume. Once 

you have balanced the subwoofer’s volume 

with that of the other speakers in your system, 

you shouldn’t have to change the Level control 

setting.

Notes on Setting Subwoofer Volume:

•  Sometimes the ideal subwoofer volume setting for music is too loud 

for films, while the ideal setting for films is too quiet for music. When 

setting the subwoofer volume, listen to both music and films with 

strong bass content and find a “middle ground” volume level that 

works for both. 

•   If your subwoofer always seems too loud or too quiet, you may want 

to place it in a different location. Placing the subwoofer in a corner will 

tend to increase its bass output, while placing it away from any walls 

or corners will tend to lessen its bass output.

subwoofeR adJustments: Phase
The Phase switch determines whether the subwoofer 

driver’s piston-like action moves in and out in phase 

with the satellite speakers. If the subwoofer were to 

play out of phase with the satellite speakers, the sound 

waves from the satellites could partially cancel out the 

waves from the subwoofer, reducing bass performance 

and sonic impact. This phenomenon depends in part on the placement of 

all the speakers relative to each other in the room. 

Although in most cases you should leave the Phase switch in the “Normal” 

position, there is no absolutely correct setting for the Phase switch. When 

the subwoofer is properly in phase with the satellite speakers, the sound 

will be clearer and have maximum impact, and percussive sounds like 

drums, piano and plucked strings will sound more lifelike. The best way 

to set the Phase switch is to listen to music that you know well and to set 

the switch in the position that gives drums and other percussive sounds 

maximum impact.

is a trademark of HARMAN International Industries, Incorporated.
Features, specifications and appearance are subject to change without notice.
Part No. 950-0328-001

HARMAN Consumer, Inc. 

www.jbl.com

Low-frequency 

transducer:

10" (250mm) PolyPlas cone (down-firing)

Enclosure type:

Ported (down-firing)

Amplifier power:

300 watts (RMS); 500 watts (peak)

Frequency response:

27Hz – 150Hz (–3dB)

Audio controls:

Volume level, crossover frequency, phase

Connections:

RCA line-level and LFE inputs

Power requirement:

120V, 60Hz (US); 220V – 230V, 50Hz/60Hz 

(EU)

Power consumption:

<1W (0.040A @ 230V) standby; 

320W (1.8A @ 230V) peak 

<6W (0.06A @ 120V) standby; 

320W (3.2A @ 120V) peak

Dimensions (W x H x D):

17-3/8" x 18-1/2" x 17-3/8"  

(441mm x 470mm x 441mm)

Weight:

39.7 lb (18.0kg)

0242CSK - JBL SUB150P OM_v3.indd   4

29/09/10   9:57:52

JBL

SUB 150P/230 Service Manual

Page 5 of 47

JBL

SUB 150P/230 Service Manual

Page 6 of 47

SUB150P/230 Troubleshooting flow charts 

 

                                                                                                                                         

 yes 

                                             

 

Stand-by BD check 

+6V,-6V, Stand-by 

VOL. 

                                                                                                                                                 

       

 

 

no 

                                   

                                            no 

yes 

               

 

     

                                    yes                                                                                                               

 no 

       

                     

yes 

 

                                            no 

 

                                                                                                                                               

                                  yes                                                                                                               

 no 

 

       

yes 

       

 

                                            no 

                                             

                                     

 yes 

no 

 

 

 

 

 yes 

                                                                                                                                               

                                              no 

 

                         

no 

                                   

 yes 

 yes 

 

       

no 

                                                                                                     

 

. 

                       

   

Start 

Dc voltage check 

±Vcc,±15V 

OK 

Check transformer 

C

168,

C

169

,D

123

, 

D

124,

C

170

 

Power on check   

LED red &blue 

OK 

Check vol module 

& connector 

cable& ±15V.ect 

Check THD output 

power, noise 

OK 

Check pre board    

& power board , 

±Vcc,±15V ect 

Test frequency 

Response 

OK 

Check U

102

,R

124

, 

C

104,

R

125

,C

117

.ect 

Test input sensitivity 

OK 

Check U

101

,R

117,

 

R

112,

R

114

 ect 

Test protection 

OK

Check U

107

.R

237

 

±15Vcc ect 

Test limiter circuit 

OK

Check U

106

.Q

107

ect

 

Auto off Function 

Hi pot test 

OK

Check U

103

.Q

101. 

Q

102

.C

131.

R

142

;Ac 

cord, Transformer. 

OK

Listening test   

OK

The Amp ass’y ok 

END 

Test phase sw,low   

pass sw rabos vr 

Check sw103,102, 

R158,163,177 ect 

JBL

SUB 150P/230 Service Manual

Page 7 of 47

25PR12FZL-DW04-E

10" woofer

1

010-7620-05320-E

200W AMP

1

241-100-05560-0BAE

Cabinet assembly

1

315-ABS-05277-0BAE

top trim plate

1

316-AL-05412-0VAE

logo

1

320-SR-05238-0BAE

rubber feet

4

321-ABS-05145-0BAE

plastic feet

4

333-EVA-06049-0BAE

EVA

4

350-AM04020D079-E

screw T4*20

26

350-AM04036D084-E

screw T4*36

1

402-000-06475-E

beauty carton

1

430-002-05444-E

pearl bag

1

431-000-07286-E

top EPE

1

431-000-07287-E

bottom EPE

1

370-000-05068-E

RCA cable

1

249-HIPS-05372-0BAE

port tube

1

327-010-05055-0BAE

grille cup

4

328-SPG-05936-0WAE

damping material 255*255*20mm

1

328-SPG-05937-0WAE

damping material 300*360*20mm

2

328-SPG-05938-0WAE

damping material 300*380*20mm

1

123-11K4DRH-E                 Ferrite core  K4DRH 16*28.5*9 (RoHS)                                   

1

150-R0905507-E                transformer 230V/50Hz 300W3PIN 3.96HOUSING RoHS                

1

152-V60201A01-E               power cord VDE 6.0FT 2PIN 

1

153-VPST101S2-E               INLET SOCKET PRONIC (RoHS)                  

1

154-V20006T0-E                fuse 2.0A 250V 20mm VDE(RoHS)                               

1

155-620R345A-E                fuse holder UL/CSA 5*20mm R3-45A(RoHS)                           

1

156-H200050-E                

shrink tube 20Φ 50mm (RoHS)                                     

1

156-H220050-E                

shrink tube 22ψ 50mm (RoHS)                                     

1

156-H300040-E                

shrink tube ψ30*40mm (RoHS)                                     

1

156-H700090-E                

shrink tube Φ70MM*90MM(RoHS)                                     

1

162-10121002-E                WIRE UL1617 120mm BRN 20#(RoHS)                               

1

162-10126001-E                WIRE UL1617 120mm BLU 20#(RoHS)                               

2

162-5016D001-E                WIRE 24# 160mm 

1

162-5020D029-E                WIRE UL1617 18AWG 200mm BLU&BRN

1

162-A050D006-E                wire UL1015 18AWG R/B

1

163-11009-E                  

plastic tie 100mm 

6

163-11809-E                  

tie 180mm*3.6                     

2

180-P3024DB-E                 ROCKER 3024-DB 

1

193-0S4211-E                 

INSULATION SPACER 42*11 (RoHS)                        

1

193-201612TR-E                INSULATION SPACER T0-220 16mm*12mm(RoHS)                         

3

236-AL-05001-0LAE             AL bar (RoHS)                                               

1

302-AL-05310-1BAE              rear panel 313.81*300*2.5

1

306-ABS-05079-0BAE          rear enclosure 198*298*102H

1

311-ABS-00028-0BAE           knob 46077-W  P.V.C.(RoHS)                            

2

323-AL-05000-0LAE             heat sink (RoHS)                                                 

1

325-FE-00400-0LAE             PCB bracket 58*9*13.5T (RoHS)                                     

1

333-EVA-00188-0BAE          EVA  170x5x1t                

1

333-EVA-00220-0BAE          EVA 225*15*1t UL(RoHS)                                

1

333-EVA-00866-0BAE          EVA 48*18*1.5T (RoHS)                                     

1

333-SPG-00863-0BAE          foam 100*50*5T (RoHS)                                     

1

335-NYL-00002-0BAE           wire clip 4K-4 NO-BB(RoHS)                                     

1

336-RUB-05103-0BAE          RUB gasket  97*16*3.0T 

2

350-EM04012D024-E            4￠*12 screw           

4

351-AM03006A069-E            M3*6 screw           

3

JBL

SUB 150P/230 Service Manual

Page 8 of 47