BassPro



Powered Subwoofer

SERVICE MANUAL

JBL Consumer Products

250 Crossways Park Dr.

Woodbury, New York 11797 Rev0 5/2003

CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . .. . . . . . . 1

DETAILED SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . ………….. . . . . . . . . . 2

CONNECTIONS . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . 3

CONTROLS & FUNCTIONS. . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . 5

REMOTE LEVEL CONTROL. . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . .. . . . . 6

BASIC TROUBLESHOOTING. . . . . . . . . . . . . .. . . . . . . . . . . . . . ... . . . . . . . . . 7

EXPLODED VIEW. . . . . . . . . . . . . . . . .. . . .. ……. . . .. . . . .. . .. .. . . . . …... … . 8

BLOCK DIAGRAM . . . . . . . . . . . . . .. . . . . . . ……... . . . . . . .. . .. . . . . . . . …... 9

PCB DRAWINGS. …………… . . . . ………………………………………………. . 10

ELECTRICAL PARTS LIST …………. .... . .. …. . . . .……….. . . . . . .. .. . . . . . . 13

IC – TRANSISTOR PINOUTS . … . . .. . . . …. . . …….…………... . …. . . . . . . . 15

SCHEMATIC DIAGRAMS . . . . . . . . .. .. .. .. . . ….. .. . ….………... . . . . . . . . . . .16

PACKING ………………. . . . . .. . . . . . . . .. .. . …… . .. .. . . . . . . . . … . . . . . . . . 17

BASIC SPECIFICATIONS

Amplifier power:

Frequency response:

100 Watts

20Hz – 120Hz

Max current draw:

Idle current draw:

Input sensitivity:

Crossover frequency:

Crossover slope:

Dimensions (L x W x H):

12A

<800mA

50mV to 4V Line-level input; 1V to 16V universal interface

70Hz – 120Hz

12dB

16-1/8" x 9-1/2" x 12-1/4" (includes mounting feet)

(410mm x 242mmx 312mm)

1

BASSPRO AUTO SUBWOOFER SPECIFICATIONS

GENERAL CONDITIONS: TEST INPUT SIGNAL FOR LINE IN – 2CH/60Hz/250mV.

TEST OUTPUT – 1 W ATT 4 Ohms LOAD (Bridge).

POWER SOURCE DC14.4V/12A min

TEST CONDITIONS: ALL TEST SIGNALS FROM LINE IN UNLESS OTHER REMARKS.

CROSSOVER VR AT MAX POSITION UNLESS OTHER REMARKS.

1. TOTAL OUTPUT POWER

2. OUTPUT POWER (1 CHANNEL)

(60, 400; 5.0% THD)

3. THD AT 1.0W (60,250;)

4. SIGNAL TO NOISE RATIO

(60,250; O/P=1W;)

5. FREQUENCY RESPONSE

(-- , 250; O/P=1W)

W 100

6. CROSSOVER RANGE

(120,250,O/P=1W,MAX REF)

7. CROSSOVER SLOPE

8. INPUT SENSITIVITY

(60, --;O/P=18W,L+R, GAIN MAX)

(60, --;O/P=18W, 2CH,GAIN MAX)

MAX TO MIN

LOW – INPUT

HI – INPUT dB dB

9. MAX GAIN NOISE, GAIN MAX )

10. MIN GAIN NOISE, GAIN MIN )

11. AUTO SENSE

(--, --, HI-N, 1CH)

12. PROTECTION CIRCUIT

(60,250,O/P=10W)

AUTO ON LEVEL V

AUTO OFF TIME MIN

SHORT SPK TERMINAL +/-

13. FUSE RATING A

14. MAXIMUM CURRENT DRAW A

15. IDLE CURRENT DRAW mA

16. DIMENSIONS

16 1/8 X 9 ½ X 12 ¼”

(410 X 242 X 312MM)

2

1.8

3.0

20

12

<800

12

-12+/-3

+/- 0.5

+/- 1.5

Functional

3

POWER CONNECTIONS

Connecting power to BassPro is shown in Figure 7. Please observe the following installation tips:

When using the high-level input connections, BassPro will automatically turn on when you turn on your radio.

In this case, the remote (REM) connection is not needed. Use at least #20

AWG speaker wire for speaker-level input connections.

Use at least #12 AWG wire for the

Positive Battery (BATT +12) and Ground

( ) connections. If needed, use at least #20 AWG wire for the remote

(REM) turn-on connection.

Connect BassPro’s “BATT +12V” terminal directly to the battery’s positive (+) terminal. Install a fuse holder, with a 20A fuse, within 18" of the battery’s positive (+) terminal.

Route all power wires through a grommet in the vehicle’s firewall. If a factory grommet is not available, install one.

Connect a short ground wire from

BassPro’s ground terminal ( ) to the nearest bare metal surface. For a good connection, use sandpaper to clear paint from the metal surface and use a screw with a lock (star) washer.

The remote (REM) connection requires a +5 to +12 Vdc signal for BassPro to turn on when using the line-level connections. Most head units with preamp outputs provide this remote voltage signal. As an alternative, connect this terminal to a switched ignition circuit.

Chassis Ground

(Bare Metal)

Remote

Turn-On

Figure 7.

(right-side panel)

APPLICATIONS

BassPro is equipped with two linelevel (RCA) inputs and two high-level inputs. To help you plan the installation of BassPro, we have included two system application diagrams in

Figures 8 and 9. For more installation suggestions, contact your local authorized JBL car audio dealer.

Left Speaker

BassPro

Connection Panel

Subwoofer Level Control

Right Speaker

Splices

(not supplied)

Source Unit

Figure 9. Line-level connections with two outputs (single full range or subwoofer).

BassPro

Connection Panel

Subwoofer Level Control

Splices

(not supplied)

LF Speaker

RF Speaker

RCA Stereo Cables

(not supplied)

Figure 8. High-level connections.

Connect BassPro’s high-level inputs to either the front or rear speaker outputs of your head unit

(splice crimps not included).

Source Unit

LR Speaker RR Speaker

4

5

CONTROLS AND FUNCTIONS

BassPro has controls and indicators that help simplify sonic integration with almost any vehicle’s unique acoustic properties. These controls are located on the amplifier panel, as shown in

Figure 10.

Power LED

Gain Control

Crossover

Remote Bass Control

Auto Turn-On

POWER LED: This indicator will glow red when the BassPro is operating.

GAIN CONTROL: Use this control to adjust the relative volume

(loudness) of BassPro with the other speakers in the vehicle.

CROSSOVER: Use this control to adjust the amount of high-frequency information present in BassPro’s output. A lower value signifies less highfrequency content.

AUTO TURN-ON: For speakerlevel connections, used this switch to activate (or deactivate) BassPro’s automatic turn-on circuit. For most speaker-level applications, slide the switch to the AUTO position. If you prefer to use the remote (REM) connection, slide the switch to the

OFF position.

REMOTE BASS

CONTROL: Use this RJ-11 jack to connect the supplied remote bass control.

SETTING THE CONTROLS:

1. Make sure the head unit is off and

VOLUME control is set to minimum.

2. On BassPro’s amplifier panel, set the CROSSOVER to its maximum frequency of 120Hz, as shown in

Figure 10.

Note: If using the REMOTE BASS

CONTROL, set GAIN to maximum and set the BASS CONTROL to the midpoint.

3. Turn the head unit ON and play a selection of your favorite music track that has substantial bass.

4. Adjust the CROSSOVER control counterclockwise, until you hear only low-frequency information.

Example – you should not hear vocals coming from BassPro when seated in the normal listening position.

5. Adjust the BASS CONTROL either clockwise or counterclockwise to suit your taste, and to avoid audible distortion.

6. If you elect to not install the Remote

Bass Control, adjust the GAIN control to the maximum level that provides undistorted output from the BassPro, with the head unit’s volume control at its 3 o’clock setting.

Note: In most cases the above steps will provide you with satisfactory results. However, the actual process may require several readjustments of each control, since the settings will interact with one another. If necessary, consult your authorized

JBL car audio dealer for help in tuning your system.

Figure 10.

INSTALLING THE REMOTE

The Subwoofer Level Control may be mounted under the dash or dismantled and mounted in the dash for a factoryinstalled appearance.

UNDER-DASH MOUNTING

Select a mounting location that allows easy access to the control while driving. Using the Subwoofer Level Control as a template, mark and drill holes in the mounting surface. Attach the

Subwoofer Level Control using the mounting screws provided (Figure 4).

IN-DASH MOUNTING

Disassemble the Subwoofer Level

Control by removing the two Phillipshead screws on the front panel, rear panel and on top. Remove the

Subwoofer Level Control’s bottom and side panels. Slide the Subwoofer Level

Control’s PC board forward to release the RJ11 connector from the back panel and remove the board along with the potentiometer, knob and connector as a single assembly.

Choose a mounting location that allows easy access to the control, and provides 1-3/4" clearance behind the mounting surface. Drill a 9/32" hole in the mounting surface. Feed the Subwoofer Level Control’s potentiometer shaft (with the knob removed) through the hole and use the nut and washer provided to hold the control in place (Figure 5).

CONNECTING THE SUBWOOFER

LEVEL CONTROL TO BASSPRO

Route the cable behind the dash or other interior panels and under the carpet. Do not route the cable outside the vehicle. Connect the RJ11 cable between the RJ11 receptacle on the

BassPro and the receptacle on the

Subwoofer Level Control (Figure 6).

Socket for

Control

Cable

Control

Cable

Rear View of

Level-Control

Circuit Board

Figure 6. Subwoofer Level Control electrical connection.

Level

Control

Board

Figure 5. In-dash mounting of the Subwoofer

Level Control.

Figure 4. Under-dash mounting of the

Subwoofer Level Control.

6

TROUBLESHOOTING

PROBLEM CAUSES AND SOLUTIONS

POWER LED not lit. 1. Fuse is blown and needs replacement.

2. Head unit not functioning properly.

3. Check remote turn-on, power and ground connections.

POWER LED is lit but there is no bass. 1. Inputs are not connected. Check connections.

2. Head-unit fader controls are not set properly. Adjust head-unit controls to feed audio signals to BassPro.

3. Incorrect GAIN control setting.

Output sounds muddy or distorted. 1. GAIN is set too high.

2. Bass level is set too high on head unit.

3. Head unit output is distorted or blown. See your authorized JBL car audio dealer.

Output gets louder when the head-unit Using speaker-level connection: one of balance is adjusted to L or R. the speaker connections is reversed

(+/–). Reverse one channel.

POWER LED remains ON after system Speaker-level connections have a fiveis turned off. minute turn-off delay. Check the unit at a later time.

7

BASS PRO EXPLODED VIEW

Ref.

#

1 Enclosure

3 Logo

5 Right Bracket

241-060-00587

301-ABS-00353

316-ABS-00538

249-ABS-00148

325-ABS-00421

325-ABS-00420

1

2

2

1

2

2

7 Plug (Screw Cap)

8 Screw

338-ABS-00126 8

351-FM04039A572 8

9 Screw 352-HM04014D611 8

10

Woofer (DCR = 3.6

Ω x 4) 16PF11BZW-AW01 1

11 Screw 325-FM04018A576 4

12 Amplifier Not For Sale 1

13 Screw 352-FM04019D470 8

8

9

10

11

12

BassPro Electrical Parts List

PART NO.

Semiconductors

DESCRIPTION

190-06m4558l

190-14m13700n

190-16a73770

192-027c1815gr

I.C. NJRC NJM4558L Dual Op-Amp

I.C. NS LM13700 Dual Op-Amp

I.C. TDA7377 Power Amp

Transistor 2SC1815GR NPN

192-028a1015gr Transistor 2SA1015GR PNP

195-10204hd LED RED 3mm

197-101n5402

197-131n4148

199-15000515

199-15000625

Diode 1N5402

Diode 1N4148

Zener Diode 5.1V 1/2W 52mm

Zener Diode 6.2V 1/2W

Resistors

110-16102j26

110-16103j26

110-16105j26

110-16151j26

110-16153j26

110-16154j26

110-16224j26

110-16273j26

110-16275j26

110-16303j26

110-16332j26

110-16333j26

110-16393j26

110-16472j26

110-16473j26

110-16474j26

110-16511j26

110-16513j26

110-16514j26

110-16681j26

110-16682j26

110-16822j26

110-16913j26

110-20101j20

115-v203b101

115-v203b202

116-161101f26

Capacitors

130-2b102k503

130-2f104z503

132-103j503

132-104j503

135-3105m50

135-3106m50

135-3108m16

135-3227m16

Resistor 1K 1/6W ±5% CF

Resistor 10K 1/6W ±5% CF

Resistor 1M 1/6W ±5% CF

Resistor 150Ω 1/6W ±5% CF

Resistor 15K 1/6W ±5% CF

Resistor 150K 1/6W ±5% CF

Resistor 220K 1/6W ±5% CF

Resistor 27K 1/6W ±5% CF

Resistor 2.7M 1/6W ±5% CF

Resistor 30K 1/6W ±5% CF

Resistor 3.3K 1/6W ±5% CF

Resistor 33K 1/6W ±5% CF

Resistor 39K 1/6W ±5% CF

Resistor 4.7K 1/6W ±5% CF

Resistor 47K 1/6W ±5% CF

Resistor 470K 1/6W ±5% CF

Resistor 510Ω 1/6W ±5% CF

Resistor 51K 1/6W ±5% CF

Resistor 510K 1/6W ±5% CF

Resistor 680Ω 1/6W ±5% CF

Resistor 6.8K 1/6W ±5% CF

Resistor 8.2K 1/6W ±5% CF

Resistor 91K 1/6W ±5% CF

Resistor100Ω 2W ±5% 20mm

Variable Resistor R0901N-JMD1-B20K

Variable Resistor R0901G-2KDQ-B20K

Resistor 1.1K 1/6W ±1% MF

Disc Cap. 1000P 50V ±10%

Disc Cap. 0.1U 50V +80/-20%

Mylar Cap. 0.01U 50V ±5%

Mylar Cap. 0.1U 50V ±5%

Electrolytic Cap. 1U 50V ±20%

Electrolytic Cap. 10U 50V ±20%

Electrolytic Cap. 1000U 16V ±20%

Electrolytic Cap. 220U 16V ±20%

13

QTY REFERENCE DESIGNATOR

1

5

3

1

2

1

1

1

2

3

U1

IC301

IC101,121

Q31,40,301

Q32,41,42

PWR

D1

D2,4,40,41,42

D5,D6

D3

1

1

2

1

2

2

2

1

1

4

1

1

1

1

1

1

1

2

1

1

1

2

2

4

8

1

1

R01,25,32,40

R11,13,20,44,102,305,307,312

R45

R311

R304,309

R42,310

R14

R16

R46

R306

R26

R21

R15

R31

R33

R43,34

R302,303

R0

R47

R23

R1,2

R30,301

R3,4

R5,6,7,8

R10

R12

R22

1

1

7

5

5

8

2

3

C2,01,02,42,43

C15,17,26,28,107,125,306,307

C29,30

C6,7,25

C5,21,22,23,24,40,303

C1,8,13,109,301

C14

C27

PART NO.

135-3475m50

135-3476m50

135-4338m25

Miscellaneous

DESCRIPTION

Electrolytic Cap. 4.7U 50V ±20%

Electrolytic Cap. 47U 50V ±20%

Electrolytic Cap. 3300U 25V ±20%

120-12101k3 Inductor 100UH 1/2W

122-14050k4160 Inductor Ferrite 5uH 15A CR630*5R0KUM

154-k020a800 Fuse 20A 32V ATC UL/CSA

155-9f30240

162-a040d001

162-a5000001

174-0rcb202ha

Fuse Holder F30240100P

SPEAKER WIRE #1015 400mm

4C WIRE 5M BLK

JACK 2PIN RCB-202HAG INPUT

174-5te112j

174-9mjd0604

175-1d02v01

175-9h04v01

180-p752209

DC JACK TE1-12J POWER

M/JACK D/S 6P4C

Wire connector 2PIN pitch=3.96mm

Wire connector 4PIN pitch=4.2mm

SWITCH SSP752209-25JJ1 AUTO-ON

LEVEL CONTROL ASSY

015-AA00-00110 LEVEL CONTROL ASSY (COMPLETE)

311-ABS-00237 KNOB

115-h203a203

166-AL035081

POTENTIOMETER

CONTROL CABLE

QTY REFERENCE DESIGNATOR

1

3

1

C304

C41,102,123

C16

1

1

1

1

4

1

1

1

1

4

1

1

1

1

1

1

L2

L1

F1

F1

JK1

JK3

M104

CH1,2,3,4

JK2

SW40

14

15

16

17