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5

Initially, turn the input-sensitivity LEVEL
control to its maximum (counter-clock-
wise) position. Turn on the source unit
and increase the volume control until it
is approximately three-quarters of maxi-
mum-output level. Slowly increase the
input LEVEL control (clockwise) while lis-
tening to the quality of the reproduced
sound. When you hear distortion on the
music peaks, turn the LEVEL control
back slightly. This is the maximum 
undistorted output level of your system.
Turning the LEVEL control up farther
WILL NOT INCREASE THE OUTPUT
POWER OF YOUR AMPLIFIER! It will
only decrease the amount of volume-
control rotation before the amp is at full-
output power. It will also increase the
amount of extraneous noise present in
your system.

Connect a pair of signal cables with
RCA-type ends between the connectors
on the amplifier and the RCA-type signal
connectors on the source unit. If your
radio has only speaker-level outputs, you
should connect them to the speaker-level
input connectors, observing proper
polarity. When using the speaker-level
inputs, it is not necessary to connect a
wire between the “remote” terminal of
the amplifier and the “remote” lead from
the source unit. The speaker-level inputs
will sense voltage on the speaker 
outputs and turn the amplifier on 
automatically.
If you are installing a P80.4 amplifier and
your source unit has only one pair of
RCA-type output connectors and a pair
of speaker-level outputs, you may 
connect the RCA outputs to a pair of
amplifier input channels (front or rear),
and the speaker-level outputs to the
other pair of amplifier input channels.

Refer to figures 1–6 for location of
adjustment switches and controls.
Electronic Crossover and Bass Boost
P80.1, P80.4, P180.2
The electronic crossover can be selected
as a 12dB/oct. high-pass filter (HPF)
12dB/oct. low-pass filter (LPF) or it 
can be defeated (FLAT). The crossover
frequency can be set at any frequency
between 32Hz and 320Hz.
BP150.1, BP300.1, BP600.1, BP1200.1
These amplifiers are designed to 
drive subwoofers. Consequently, the 
electronic crossover is a 12dB/oct. 
low-pass filter which can be set at any
frequency between 32Hz and 320Hz.
The bass boost control will provide up
to 6dB of boost at 50Hz.

The BP150.1, BP300.1, BP600.1 and 
BP1200.1 are designed to provide con-
stant bass regardless of the position of
the source unit’s front-to-rear fader posi-
tion. Use of this feature requires that all
four inputs are connected to the source
unit as labeled on the amplifier (front,
rear, right and left). If your source unit
has only one pair of RCA-type output
connectors and a pair of speaker-level
outputs, you may connect the RCA out-
puts to a pair of amplifier input channels
(front or rear), and the speaker level out-
puts to the other pair of amplifier input
channels. If nonfading bass is not impor-
tant in your system, connect a pair of
inputs, either speaker-level or RCA-type,
to either the front or rear input connec-
tors on the amplifier. 

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6

No Audio 

Short circuit in speaker or speaker wire.

Disconnect speaker leads one at a time to determine 

(Red LED flashes every four seconds)

which speaker or wire is shorted or defective.
Repair the short circuit or replace bad speaker.

No Audio 

No voltage at BATT or REM terminals.

Check voltage at amplifier terminals with VOM.

(Power indicator is off)

Bad or no ground connection.

No Audio

Amplifier overheated.

Make sure amplifier cooling isn’t prevented by mounting location,

(Green power LED is lit)

make sure speaker-system impedance is within limit (see Specifications).

No Audio

Excessive voltage on B (+) connection.

Check vehicle charging system for defective voltage regulator.

(Red LED stays lit) 

Distorted Audio

Input sensitivity not set properly; 

Check LEVEL setting.

amplifier or source unit defective.

Music lacks “punch”

Speakers are not connected properly.

Check speaker connections for proper polarity.

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7

Power Output, 

40W x 2

90W x 2

40W x 4

75W

150W

300W

600W

4 ohms

Power Output, 

80W x 2

180W x 2

80W x 4

150W

300W

600W

1200W

2 ohms

Power Output, 

160W x 2

360W x 1

160W x 2

NA

NA

NA

NA

4 ohms Bridged

Minimum speaker 

2 ohms

2 ohms

2 ohms

1 ohm*

1 ohm*

1 ohm*

1 ohm*

impedance

Frequency 

10Hz – 50kHz

10Hz – 50kHz

10Hz – 50kHz

10Hz – 320Hz

10Hz – 320Hz

10Hz – 320Hz

10Hz – 320Hz

Response

Input Sensitivity 

250mV ~ 4V

250mV ~ 4V

250mV – 4V

250mV – 4V

250mV – 4V

250mV – 4V

250mV – 4V

(RCA type)

THD + Noise

0.05%

0.05%

0.05%

0.10%

0.10%

0.10%

0.10%

(4 ohms)

Signal-to-Noise

>110dB

>110dB

>110dB

>100dB

>100dB

>100dB

>100dB

Maximum 

24 amps

45 amps

43 amps

14 amps

29 amps

57 amps

114 amps

Current Draw

Fuse Requirement

20A

20A x 2

20A x 2

20A

20A x 2

30A x 2

40A x 3

Dimensions 

8-3/4 x 8 x 2-11/16"  

9-1/16 x 12-9/16 x 2-11/16" 

9-1/16 x 12-9/16 x 2-11/16"

8-3/4 x 8 x 2-11/16"

8-5/16 x 10-3/4 x 2-11/16"

9-1/16 x 12-9/16 x 2-11/16"

10-13/16 x 14-13/16 x 2-11/16"

(H x W x L)

222 x 205 x 67.5mm 

229 x 319 x 67.5mm 

229 x 319 x 67.5mm

222 x 205 x 67.5mm

210 x 273 x 67.5mm

229 x 319 x 67.5mm

274 x 376 x 67.5mm

* No increase in output power over 2

Ω

rating.

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Declaration of Conformity

Kongevejen 194B 
DK-3460 Birkerød
DENMARK

declare in own responsibility, that the products  

  described

in this owner’s manual are in compliance with technical

 

standards:

EN
EN 

55013/A12/8.1994
55020/12.1994

Steen Michaelsen

Birkerød. DENMARK. 4/99

JBL Consumer Products  250 Crossways Park Drive, Woodbur y, NY 11797

www.jbl.com  

©

1999 JBL, Incorporated  JBL is a registered trademark of JBL, Incorporated.

Part No. PSAMPOM  4/99  

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