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                    PowerPlus Amplifiers

13

Troubleshooting

NOTE: If the protection light is activated with no speakers connected to 
the amplifier, and all the power connections are correct, this would 
indicate an internal problem with the amplifier.

Problem

Possible Cause

Corrective Action

Amplifier does not 
turn on

No power to +12V 
terminal

Check fuse(s)

No power to REM 
terminal

Check head unit fuse(s) and 
wiring

Blown main fuse at 
battery

Replace fuse and identify 
cause of failure

Blown fuse at amplifier

Replace fuse and identify 
cause of failure

Faulty ground

Re-ground main power 
ground to bare metal 
chassis

Volume control too 
sensitive

Input level control 
adjusted too high

Re-adjust the input level 
(refer to page 8)

Distorted sound

Input level control 
adjusted too high

Re-adjust the input level 
(refer to page 8)

Blows fuse(s) at amp Power wires connected 

backwards

Reconnect power wires 
properly

Internal problem with 
amp

Take unit for service

Engine noise / 
Alternator whine

Ground loop(s)

Use good quality shielded 
RCA cables

Faulty ground at amp

Re-ground amp to clean 
bare metal chassis

Faulty ground at head 
unit

Re-ground head unit to 
clean bare metal chassis

Inductive coupling

Re-route RCA and/or 
speaker wires away from 
factory harnesses

Input level on amp set 
too high

Re-adjust input level (refer 
to page 8)

Thermal protection 
activated

Amplifier driving 2 ohm 
load for long durations

If the amplifier “thermals” 
frequently while driving 
subwoofers, install fan to 
keep amp cool.

Short circuit 
protection activated

Blown speakers

Check all speakers

Speaker wire(s) shorting 
to ground

Check for faulty wiring

Defective crossover

Faulty passive crossover

Low impedance 
protection activated

Amp connected to 
improper load

Check speaker connections

Amp will not drive a 1 
ohm mono load, 2 ohm 
minimum in mono 
configuration

Verify that speakers are 
connected properly

Speakers defective/
blown

Check speakers

Faulty passive 
crossovers

Check crossovers

Poor bass response

Speakers out of phase

Check speaker polarity; 
reverse the connection to 
one speaker only if two 
subwoofers are connected 
to the amplifier.

Содержание PowerPlus 900

Страница 1: ...ion Manual Contents Introduction 2 Features and Specifications 3 Installation 4 Wiring 5 Speaker Wiring 7 Indicators and Controls 11 Testing 12 Remote Input Level Control 12 Troubleshooting 13 CEA Pow...

Страница 2: ...So feel confident that your Jensen purchase decision was a sound one and remember If it s Too Loud You re Too Old Before You Begin We need to get the legal stuff out of the way so please keep reading...

Страница 3: ...ode switch PowerPlus 840 and 1304 PowerPlus 1302 Low Pass filter 50 250Hz High Pass filter 40 500Hz High Pass Low Pass Full Range selector switch Stereo Mono Mode switch Remote Input Level Control w 5...

Страница 4: ...t the negative battery cable before starting the installation Check the battery ground there should be two 2 ground wires coming from the battery one going to the starter mounting bolt or engine block...

Страница 5: ...eries can be installed if desired Use the following recommended wire gauge as a guide when installing your amplifier s Power Terminal 12V B Connect the main power wire to the battery within 18 inches...

Страница 6: ...are metal Use a ring terminal of the proper gauge and an outside star washer between the chassis and ring terminal when making your ground connection Although you ve scraped away the paint to expose b...

Страница 7: ...For maximum power configure your speakers for a nominal 2 ohm load NOTE Do not overlook the use of the proper gauge speaker wire The PowerPlus series of amplifiers require a minimum of 12 gauge wire...

Страница 8: ...LPF OFF SPEAKER OUTPUT BRIDGED BRIDGED CH1 CH2 CH3 CH4 4 ohm nominal 2 ohm minimum 4 ohm nominal 2 ohm minimum HPF LPF OFF HPF LPF OFF SPEAKER OUTPUT BRIDGED BRIDGED CH1 CH2 CH3 CH4 4 ohm nominal 4 oh...

Страница 9: ...annel or 4 channel RCA Cable CAR STEREO SOURCE UNIT RCA Cable CAR STEREO SOURCE UNIT Input Wiring Mono Mode Input Wiring Stereo Mode MODE 4 3 2 2 Channel 40Hz 240Hz 40Hz 400Hz 0dB 12dB 5V 0 4V X OVER...

Страница 10: ...Connecting Additional Amplifiers Pass Thru RCA connectors are provided to connect additional amplifiers without the need to purchase Y adapters MODE 4 3 2 HPF LPF OFF 5V 0 4V 0dB 12dB 40Hz 400Hz 40Hz...

Страница 11: ...ly use a higher crossover setting between 125Hz and 150Hz Since musical tastes vary you should play music that you would normally listen to in your vehicle with the above settings as a starting point...

Страница 12: ...both speaker wires may be disconnected Remote Input Level Control The PowerPlus 900 1150 and 1302 come equipped with a Remote Input Level Control The Remote Input Level Control allows the input level...

Страница 13: ...lternator whine Ground loop s Use good quality shielded RCA cables Faulty ground at amp Re ground amp to clean bare metal chassis Faulty ground at head unit Re ground head unit to clean bare metal cha...

Страница 14: ...uency Response 10Hz to 240Hz 3dB Reference 1 watt Dimensions L17 25 x H2 5 x W11 75 PowerPlus 1150 Power Output 330 watts RMS X 1 channels into 4 ohms 1 THD N Signal to Noise Ratio 100dBA below refere...

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