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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: 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)
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.
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
POWER CONNECTIONS
Connecting power to BassPro 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
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's ground terminal ( ) to the preamp outputs provide this remote
nections, BassPro will automatically nearest bare metal surface. For a good voltage signal. As an alternative,
turn on when you turn on your radio. Connect BassPro'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 Connection Panel
BassPro
(right-side panel)
Figure 7.
SourceUnit
Source Unit
3
APPLICATIONS BassPro
Connection Panel
BassPro is equipped with two line- Subwoofer Level Control
level (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 Left Speaker Right Speaker
suggestions, contact your local
authorized JBL car audio dealer.
Figure 8. High-level connections.
Connect BassPro's high-level
inputs to either the front or rear
Splices Splices speaker outputs of your head unit
(not supplied) (not supplied) (splice crimps not included).
Source Unit
Figure 9. Line-level connections with BassPro
two outputs (single full range or sub- Connection Panel
woofer).
Subwoofer Level Control
LF Speaker RF Speaker
RCA Stereo Cables
(not supplied)
Source Unit
LR Speaker RR Speaker
4
CONTROLS AND FUNCTIONS
BassPro 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 is level connections, used this switch to selection of your favorite music
almost any vehicle's unique acoustic operating. activate (or deactivate) BassPro'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 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 when
Gain Control OFF position. seated in the normal listening
Crossover CROSSOVER: Use this control to position.
Remote Bass Control adjust the amount of high-frequency REMOTE BASS 5. Adjust the BASS CONTROL either
Auto Turn-On information present in BassPro'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 to not 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's amplifier panel, set the BassPro, 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
midpoint. 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.
5
INSTALLING THE REMOTE CONNECTING THE SUBWOOFER
LEVEL CONTROL TO BASSPRO
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 ConnectorPanel
BassPro 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 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.
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 five-
is turned off. minute turn-off delay. Check the unit at
a later time.
7
BASS PRO EXPLODED VIEW
Ref. Description Part Number Qty
#
1 Enclosure 241-060-00587 1
2 Side Baffles 301-ABS-00353 2
3 Logo 316-ABS-00538 2
4 Port Tube 249-ABS-00148 1
5 Right Bracket 325-ABS-00421 2
6 Left Bracket 325-ABS-00420 2
7 Plug (Screw Cap) 338-ABS-00126 8
8 Screw 351-FM04039A572 8
9 Screw 352-HM04014D611 8
10 Woofer (DCR = 3.6 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. DESCRIPTION QTY REFERENCE DESIGNATOR
Semiconductors
190-06m4558l I.C. NJRC NJM4558L Dual Op-Amp 1 U1
190-14m13700n I.C. NS LM13700 Dual Op-Amp 1 IC301
190-16a73770 I.C. TDA7377 Power Amp 2 IC101,121
192-027c1815gr Transistor 2SC1815GR NPN 3 Q31,40,301
192-028a1015gr Transistor 2SA1015GR PNP 3 Q32,41,42
195-10204hd LED RED 3mm 1 PWR
197-101n5402 Diode 1N5402 1 D1
197-131n4148 Diode 1N4148 5 D2,4,40,41,42
199-15000515 Zener Diode 5.1V 1/2W 52mm 2 D5,D6
199-15000625 Zener Diode 6.2V 1/2W 1 D3
Resistors
110-16102j26 Resistor 1K 1/6W ±5% CF 4 R01,25,32,40
110-16103j26 Resistor 10K 1/6W ±5% CF 8 R11,13,20,44,102,305,307,312
110-16105j26 Resistor 1M 1/6W ±5% CF 1 R45
110-16151j26 Resistor 150 1/6W ±5% CF 1 R311
110-16153j26 Resistor 15K 1/6W ±5% CF 2 R304,309
110-16154j26 Resistor 150K 1/6W ±5% CF 2 R42,310
110-16224j26 Resistor 220K 1/6W ±5% CF 1 R14
110-16273j26 Resistor 27K 1/6W ±5% CF 1 R16
110-16275j26 Resistor 2.7M 1/6W ±5% CF 1 R46
110-16303j26 Resistor 30K 1/6W ±5% CF 1 R306
110-16332j26 Resistor 3.3K 1/6W ±5% CF 1 R26
110-16333j26 Resistor 33K 1/6W ±5% CF 1 R21
110-16393j26 Resistor 39K 1/6W ±5% CF 1 R15
110-16472j26 Resistor 4.7K 1/6W ±5% CF 1 R31
110-16473j26 Resistor 47K 1/6W ±5% CF 1 R33
110-16474j26 Resistor 470K 1/6W ±5% CF 2 R43,34
110-16511j26 Resistor 510 1/6W ±5% CF 2 R302,303
110-16513j26 Resistor 51K 1/6W ±5% CF 1 R0
110-16514j26 Resistor 510K 1/6W ±5% CF 1 R47
110-16681j26 Resistor 680 1/6W ±5% CF 1 R23
110-16682j26 Resistor 6.8K 1/6W ±5% CF 2 R1,2
110-16822j26 Resistor 8.2K 1/6W ±5% CF 2 R30,301
110-16913j26 Resistor 91K 1/6W ±5% CF 2 R3,4
110-20101j20 Resistor100 2W ±5% 20mm 4 R5,6,7,8
115-v203b101 Variable Resistor R0901N-JMD1-B20K 1 R10
115-v203b202 Variable Resistor R0901G-2KDQ-B20K 1 R12
116-161101f26 Resistor 1.1K 1/6W ±1% MF 1 R22
Capacitors
130-2b102k503 Disc Cap. 1000P 50V ±10% 5 C2,01,02,42,43
130-2f104z503 Disc Cap. 0.1U 50V +80/-20% 8 C15,17,26,28,107,125,306,307
132-103j503 Mylar Cap. 0.01U 50V ±5% 2 C29,30
132-104j503 Mylar Cap. 0.1U 50V ±5% 3 C6,7,25
135-3105m50 Electrolytic Cap. 1U 50V ±20% 7 C5,21,22,23,24,40,303
135-3106m50 Electrolytic Cap. 10U 50V ±20% 5 C1,8,13,109,301
135-3108m16 Electrolytic Cap. 1000U 16V ±20% 1 C14
135-3227m16 Electrolytic Cap. 220U 16V ±20% 1 C27
13
PART NO. DESCRIPTION QTY REFERENCE DESIGNATOR
135-3475m50 Electrolytic Cap. 4.7U 50V ±20% 1 C304
135-3476m50 Electrolytic Cap. 47U 50V ±20% 3 C41,102,123
135-4338m25 Electrolytic Cap. 3300U 25V ±20% 1 C16
Miscellaneous
120-12101k3 Inductor 100UH 1/2W 1 L2
122-14050k4160 Inductor Ferrite 5uH 15A CR630*5R0KUM 1 L1
154-k020a800 Fuse 20A 32V ATC UL/CSA 1 F1
155-9f30240 Fuse Holder F30240100P 1 F1
162-a040d001 SPEAKER WIRE #1015 400mm 4
162-a5000001 4C WIRE 5M BLK 1
174-0rcb202ha JACK 2PIN RCB-202HAG INPUT 1 JK1
174-5te112j DC JACK TE1-12J POWER 1 JK3
174-9mjd0604 M/JACK D/S 6P4C 1 M104
175-1d02v01 Wire connector 2PIN pitch=3.96mm 4 CH1,2,3,4
175-9h04v01 Wire connector 4PIN pitch=4.2mm 1 JK2
180-p752209 SWITCH SSP752209-25JJ1 AUTO-ON 1 SW40
LEVEL CONTROL ASSY
015-AA00-00110 LEVEL CONTROL ASSY (COMPLETE) 1
311-ABS-00237 KNOB 1
115-h203a203 POTENTIOMETER 1
166-AL035081 CONTROL CABLE 1
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