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BassPro II TM
Powered Subwoofer
SERVICE MANUAL
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev0 6/2003
BassPro II
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . .. . . . . . . 1
DETAILED SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . .............. . . . . . . . . . 2
CONNECTIONS . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . . . . . . 3
CONTROLS & FUNCTIONS. . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . . . . . . . 5
BASIC TROUBLESHOOTING. . . . . . . . . . . . . .. . . . . . . . . . . . . . ... . . . . . . . . . 6
REMOTE LEVEL CONTROL. . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. . . . . .. . . . . 7
EXPLODED VIEW. . . . . . . . . . . . . . . . .. . . .. ....... . . .. . . . .. . .. .. . . . . ...... ... . 8
BLOCK DIAGRAM . . . . . . . . . . . . . .. . . . . . . ......... . . . . . . .. . .. . . . . . . . ...... 9
PCB DRAWINGS. ............... . . . . ....................................................... . 10
ELECTRICAL PARTS LIST ............. .... . .. .... . . . ............ . . . . . .. .. . . . . . . 13
IC TRANSISTOR PINOUTS . ... . . .. . . . .... . . ...................... . .... . . . . . . . 15
SCHEMATIC DIAGRAM.. . . . . . . . . .. .. .. .. . . ..... .. . ................ . . . . . . . . . . .16
PACKING ................... . . . . .. . . . . . . . .. .. . ...... . .. .. . . . . . . . . ... . . . . . . . . 17
BASS PRO II BASIC SPECIFICATIONS
Amplifier power: 100 Watts
Frequency response: 20Hz 120Hz
Fuse rating: 20A
Max current draw: 12A
Idle current draw: <800mA
Input sensitivity: 50mV to 4V Line-level input; 1V to 16V universal interface
Crossover frequency: 70Hz 120Hz
Crossover slope: 12dB
Dimensions (L x W x H): 16-1/8" x 9-1/2" x 12-1/4" (includes mounting feet)
(410mm x 242mmx 312mm)
JBL continually strives to update and improve existing products, as well as create new ones. The specifications and
details in this and related JBL publications are therefore subject to change without notice.
1
BassPro II
BASSPROII 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.
UNIT NOMINAL LIMIT
1. TOTAL OUTPUT POWER W 100
2. OUTPUT POWER (1 CHANNEL) W 22 20
(60, 400; 5.0% THD)
% 0.3 0.5 MAX
3. THD AT 1.0W (60,250;)
4. SIGNAL TO NOISE RATIO dB 70 65 MIN
(60,250; O/P=1W;)
5. FREQUENCY RESPONSE (60-120HZ) dB 60Hz 0REF
(-- , 250; O/P=1W) 120Hz -1.6+/-3
180Hz -6.5+/-3
6. CROSSOVER RANGE MAX TO MIN dB -12+/-3
(120,250,O/P=1W,MAX REF)
7. CROSSOVER SLOPE dB 12
8. INPUT SENSITIVITY
(60, --;O/P=18W,L+R, GAIN MAX) LOW INPUT mV 340 +/- 60
(60, --;O/P=18W, 2CH,GAIN MAX) HI INPUT V 3.5 +/- 0.6
9. MAX GAIN NOISE, GAIN MAX ) mV 0.8 1.5 MAX
10. MIN GAIN NOISE, GAIN MIN ) mV 0.5 0.9 MAX
11. AUTO SENSE AUTO ON LEVEL V 1.8 +/- 0.5
(--, --, HI-N, 1CH) AUTO OFF TIME MIN 3.0 +/- 1.5
12. PROTECTION CIRCUIT
SHORT SPK TERMINAL +/- Functional
(60,250,O/P=10W)
13. FUSE RATING A 20
14. MAXIMUM CURRENT DRAW A 12
15. IDLE CURRENT DRAW mA <800
16 1/8 X 9 ½ X 12 ¼"
16. DIMENSIONS
(410 X 242 X 312MM)
2
BassPro II
POWER CONNECTIONS
Connecting power to BassPro II is Use at least #12 AWG wire for the Route all power wires through a grom- The remote (REM) connection requires
shown in Figure 7. Please observe Positive Battery (BATT +12) and Ground met in the vehicle's firewall. If a factory a +5 to +12 Vdc signal for BassPro II
the following installation tips: ( ) connections. If needed, use at grommet is not available, install one. to turn on when using the line-level
least #20 AWG wire for the remote Connect a short ground wire from connections. Most head units with
When using the high-level input con- (REM) turn-on connection. BassPro II's ground terminal ( ) to the preamp outputs provide this remote
nections, BassPro II will automatically nearest bare metal surface. For a good voltage signal. As an alternative,
turn on when you turn on your radio. Connect BassPro II's "BATT +12V" connection, use sandpaper to clear connect this terminal to a switched
In this case, the remote (REM) con- terminal directly to the battery's posi- paint from the metal surface and use ignition circuit.
nection is not needed. Use at least #20 tive (+) terminal. Install a fuse holder, a screw with a lock (star) washer.
AWG speaker wire for speaker-level with a 20A fuse, within 18" of the bat-
input connections. tery's positive (+) terminal.
Chassis Ground
Chassis Ground
(Bare Metal)
(Bare Metal)
Fuse 20 A
Fuse 20A
18"
18"
Battery
Battery
Remote
Remote
Turn-On
Turn-On
BassPro II Connection Panel
BassPro
(right-side panel)
Figure 7.
SourceUnit
Source Unit
3
BassPro II
APPLICATIONS BassPro II
Connection Panel
BassPro II is equipped with two line- Subwoofer Level Control
level (RCA) inputs and two high-level
inputs. To help you plan the installation
of BassPro II, we have included two
system application diagrams in
Figures 8 and 9. For more installation Left Speaker Right Speaker
suggestions, contact your local
authorized JBL car audio dealer.
Figure 8. High-level connections.
Connect BassPro II's high-level
inputs to either the front or rear Splices Splices
(not supplied) (not supplied)
speaker outputs of your head unit
(splice crimps not included). Source Unit
BassPro II
Connection Panel
Subwoofer Level Control
LF Speaker RF Speaker
RCA Stereo Cables
Figure 9. Line-level connections (not supplied)
with two outputs (single full-range
or subwoofer).
Source Unit
LR Speaker RR Speaker
4
BassPro II
CONTROLS AND FUNCTIONS
BassPro II has controls and indicators POWER LED: This indicator AUTO TURN-ON: For speaker- 3. Turn the head unit ON and play a
that help simplify sonic integration with will glow red when the BassPro II level connections, used this switch to selection of your favorite music
almost any vehicle's unique acoustic is operating. activate (or deactivate) BassPro II's track that has substantial bass.
properties. These controls are located automatic turn-on circuit. For most 4. Adjust the CROSSOVER control
on the amplifier panel, as shown in GAIN CONTROL: Use this speaker-level applications, slide the counterclockwise, until you hear
Figure 10. control to adjust the relative volume switch to the AUTO position. If you only low-frequency information.
(loudness) of BassPro II with the other prefer to use the remote (REM) Example you should not hear
Power LED speakers in the vehicle. connection, slide the switch to the vocals coming from BassPro II
Gain Control OFF position. when seated in the normal listening
Crossover CROSSOVER: Use this control position.
Remote Bass Control to adjust the amount of high-frequency REMOTE BASS 5. Adjust the BASS CONTROL either
Auto Turn-On information present in BassPro II's out- CONTROL: Use this RJ-11 jack clockwise or counterclockwise to
put. A lower value signifies less high- to connect the supplied remote bass suit your taste, and to avoid audible
frequency content. control. distortion.
6. If you elect not to install the Remote
SETTING THE CONTROLS: Bass Control, adjust the GAIN
1. Make sure the head unit is off and control to the maximum level that
VOLUME control is set to minimum. provides undistorted output from
2. On BassPro II's amplifier panel, set the BassPro II, with the head unit's
the CROSSOVER to its maximum volume control at its 3 o'clock
frequency of 120Hz, as shown in setting.
Figure 10.
NOTE: In most cases the above steps
NOTE: If using the REMOTE BASS will provide you with satisfactory
CONTROL, set GAIN to maximum results. However, the actual process
and set the BASS CONTROL to the may require several readjustments of
midpoint. 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.
5
BassPro II
TROUBLESHOOTING
PROBLEM CAUSES AND SOLUTIONS
POWER LED is 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 II.
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 five-
is turned off. minute turn-off delay. Check the unit at
a later time.
6
BassPro II
INSTALLING THE REMOTE CONNECTING THE SUBWOOFER
LEVEL CONTROL TO BASSPRO II
The Subwoofer Level Control may be Choose a mounting location that Route the cable behind the dash or
mounted under the dash or dismantled allows easy access to the control, other interior panels and under the BassPro II Connection Panel
and mounted in the dash for a factory- and provides 1-3/4" clearance behind carpet. Do not route the cable outside
installed appearance. the mounting surface. Drill a 9/32" the vehicle. Connect the RJ11 cable
hole in the mounting surface. Feed between the RJ11 receptacle on the
UNDER-DASH MOUNTING the Subwoofer Level Control's BassPro II and the receptacle on the
Select a mounting location that allows potentiometer shaft (with the knob Subwoofer Level Control (Figure 6).
easy access to the control while driv- removed) through the hole and use the
ing. Using the Subwoofer Level Control nut and washer provided to hold the
as a template, mark and drill holes in control in place (Figure 5).
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 Phillips-
head screws on the front panel,
rear panel and on top. Remove the
Subwoofer Level Control's bottom and Control
side panels. Slide the Subwoofer Level Cable
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 Socket
Socket
as a single assembly. for
for
Control
Control
Cable
Cable Rear View of
Level-Control
Circuit Board
Figure 6. Subwoofer Level Control electrical
Washer
Washer Level
Level- connection.
Control
Control
Circuit
Circuit
Board
HexNut
Hex Nut Board
Knob
Knob
Figure 5. In-dash mounting of the Subwoofer Level Control.
Figure 4. Under-dash mounting of the
Subwoofer Level Control.
7
BassPro II
BASS PRO II EXPLODED VIEW
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BassPro II
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BassPro II
10
BassPro II
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BassPro II
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BassPro II
BassPro II Electrical Parts List
Part Number Description Reference Designator
Resistors
110-16102j26 Resistor 1K 1/6W±5% CF 26mm TAP R01,25,32,40
R11,13,20,44,102,305,307,312,73,74,63,64,65,
110-16103j26 Resistor 10K 1/6W±5% CF 26mm TAP
66,67,68
110-16105j26 Resistor 1M 1/6W±5% CF 26mm TAP R45
110-16112j26 Resistor 1.1K 1/6W±5% CF 26mm TAP R22
110-16151j26 Resistor 150K 1/6W±5% CF 26mm TAP R311
110-16153j26 Resistor 15K 1/6W±5% CF 26mm TAP R304,309
11016154j26 Resistor 150K 1/6W±5% CF 26mm TAP R42,310,77,78,75,76
110-16202j26 Resistor 2K 1/6W±5% CF 26mm TAP R60
110-16203j26 Resistor 20K 1/6W±5% CF 26mm TAP R79,70
110-16224j26 Resistor 220K 1/6W±5% CF 26mm TAP R14
110-16273j26 Resistor 27K 1/6W±5% CF 26mm TAP R16,21
110-16275j26 Resistor 2.7M 1/6W±5% CF 26mm TAP R46
110-16303j26 Resistor 30K 1/6W±5% CF 26mm TAP R306
110-16332j26 Resistor 3.3K 1/6W±5% CF 26mm TAP R26
110-16393j26 Resistor 39K 1/6W±5% CF 26mm TAP R15
110-16472j26 Resistor 4.7K 1/6W±5% CF 26mm TAP R31,72,71,62,61
110-16473j26 Resistor 47K 1/6W±5% CF 26mm TAP R33
110-16474j26 Resistor 470K 1/6W±5% CF 26mm TAP R43,34
110-16511j26 Resistor 510 1/6W±5% CF 26mm TAP R302,303
110-16514j26 Resistor 510K 1/6W±5% CF 26mm TAP R47
110-16622j26 Resistor 6.2K 1/6W±5% CF 26mm TAP R301
110-16681j26 Resistor 680 1/6W±5% CF 26mm TAP R23
110-16822j26 Resistor 8.2K 1/6W±5% CF 26mm TAP R30
115-v203b101 Variable Resistor R0901N-JMD1 R10
115-v203b202 Variable Resistor R0901G-2KD1-B20K R12
Capacitors
130-2b101k503 Disc capacitor 100P 50V±10% TAP C63,64
130-2b102k503 Disc capacitor 1000P 50V±10% TAP C2,02,42,43
130-2b221k503 Disc capacitor 220P 50V±10% TAP C65,66
130-2f104z503 Disc capacitor 0.1uF 50V+80%/-20% TAP C15,17,26,28,107,125,306,307
132-103j503 Mylar capacitor 0.01U 50V±5% TAP C30
132-104j503 Mylar capacitor 0.1U 50V±5% TAP C6,7,25
132-222j503 Mylar capacitor 0.0022U 50V±5% TAP C29
135-3105m50 Electolytic 1U 50V±20% TAP C5,21,22,23,24,40,303
135-3106m50 Electolytic 10U 50V±20% TAP C13,109,301,8,1,70
135-3226m25 Electolytic 22U 25V±20% TAP C61,62
135-3227m16 Electolytic 220U 16V±20% TAP C27
135-3475m50 Electolytic 4.7U 50V±20% TAP C304
135-3476m50 Electolytic 47U 50V±20% TAP C41,102,123
135-3108m16 Electolytic 1000uF 16V±20% TAP C14
135-4338m25 Electolytic 3300uF 25V±20% C16
Semiconductors
192-027c1815gr transistor 2SC1815GR NPN Q31,40,301
192-028a1015gr transistor 2SA1015GR PNP Q32,41,42
197-031n4148 DIODE 100MA 75V SIGNAL IN4148 ROHM TAP D2,4,40,41,42
199-15000515 zener diode 5.1V 1/2W 52mm TAP D5,6
199-15000625 zener diode 6.2V 1/2W 52mm TAP D3
190-06m4558L I.C. NJRC NJM4558LD Dual Op-Amp U1,2
190-14m13700n IC NS LM13700N Dual Op-Amp IC301
190-16a73770 I.C. TDA7377 Power Amp IC101,121
195-10204hd LED RED 3MM FOR STANDBY PWR
197-101n5402 DIODE IN5402 D1
13
BassPro II
Part Number Description Reference Designator
Miscellaneous
120-12101K3 Inductor 100uH 1/2W 52mm TAP L2
122-14050K4160 Inductor Ferrite 5uH 15A CR630*5R0KUM L1
123-11rc6*30wd NI IR0N CORD(NI-ZN)RC6*30
160-g2uew130 Golden wire 2uew 1.3
154-k020a800 FUSE 20A 32V ATC UL/CSA F1
155-9f30240 FUSE SOCKET F30240100P F1
174-020123bg PCA PIN JACK JK020123BG JK1
174-5te112j DC JACK TE1-12J JK3
174-9mjd0604 SOCKET M/JACK D/S 6P4C BLK M104
175-1d02v01 Wire connector 2PIN PITCH=3.96mm CH1,2,3,4
175-9h04v01 Wire connector 4PIN PITCH=4.2mm JK2
180-p752209 PUSH SW SSP752209-25JJ1 SW40
162-a040d001 SPK WIRE #1015 400mm 991110-00
162-a5000001 4C TELEPHONE WIRE 5M BLK
302-AL-00397-1BA Rear Panel 179*179*2.5T
323-AL-00042 Heat Sink
323-AL-00119 Heat Sink
333-EVA-00114 EVA TO PCB
333-EVA-00220 EVA WASHER 225*15*1T UL TO SPK WIRE
333-EVA-00759 EVA L 177*14*2T TO R/P-2
333-EVA-00760 EVA W 149*14*2T TO R/P-2
350-FM04020D104 SCREW 4*20 BLK
351-AM03012A090 SCREW M3*12 BLK TO 650IH50/HEAR SINK
352-AM02010D006 SCREW 2*10 BLK TO FUSE-2
352-AM03008D040 SCREW 3*8 BLK PCB TO H/S-2
352-AM03010D065 SCREW 3*10 BLK TO RCA-1,TER-2
352-BM03010D064 SCREW 3*10 BLK
355-P0306242 M3 SPRING SPACER ID3.2*OD5.6*T0.8 TO M3 SCREW
361-FE-00056 IC HOLDER 38*9*5.1*1.6T SECC20/20
361-NYL-00016 LED HOLDER 5.6c *10H
015-7600-00118 VOLUME CONTROLLER, COMPLETE
115-h203a203 Variable Resistor 20K RD902-20-15K-A24
311-ABS-00237 VOLUME KNOB
166-AL035081 CONTROL CABLE
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BassPro II
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BassPro II
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BassPro II
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