Question about Car Amplifiers

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Deck,amp and sub

Ok my subs kept on pulsing and my friend says that it could be the deck that is messing it up or is it the amp thats making the subs pulse. Also the face of my deck is blank but it still works

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If it still plays then it could be low current.check for proper wire guage

Posted on Sep 09, 2008

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1 Answer

When the car and amp are on but the radio is off the sub makes a pulse sound


The amp is generating output even if the radio is off. Your sub probably is a high compliance unit so the cone has a lot of free movement which creates the pulsing sound you hear

Mar 07, 2013 | Car Amplifiers

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Can i bridge a Sony Xm-1652Z 2 Channel amp to 2 subs it gives me 2ohms


No - it is not 2 ohm mono stable

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  • 200W x 2, 20 - 20kHz, @ 0.15% THD + N, at 2 Ohms
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Sep 13, 2010 | Sony Xplod XM-1652Z Car Audio Amplifier

2 Answers

Sony xplog xmgtr2022 1200W car ampli turning off after 5 mins


Sony is not a bad brand if you use it correctly... This is what is happening my friend. You are what is called "clipping" your amplifier. What you need to do is make sure you are running your subs at the correct impedance or also known as resistance. Then make sure you are running them at the correct frequency, there is a turn tab on the amp to match the sub to the amp. Then never never turn the gain all the way up. This over works the amp and will wear it out much faster. This also does not actually give more power to the subs it just gains the power sooner then later. Never turn the gain more then half way up.. Hope this can step you in the correct direction my friend.

By the way plaztiksr4me kenwood is junk too :O

Apr 06, 2010 | Sony XM-GTR2022 Car Audio Amplifier

1 Answer

Rockford p8002 keeps pulseing. (not a ground problem)


for seeing a out of phaze speaker you would have to run like a 10 hz or lower signal to the amp you might be seeing a optical illusion if they were out of phaze or backwards the speaker would have cancled each other out so it would sound like **** as you said.but anyway it sounds like the amps power supply is bad.put it back in you car and see if it still works like it did befor you put it in your friends car.you may have burned it up.find out how much the amp is worth and if can have it fixed for less then 60% of orignal cost then have it fixed

Mar 18, 2010 | Rockford Fosgate Punch P8002 Car Audio...

1 Answer

My zr360 when i turn on the radio turns the subs to full pulsing bass very loud and there is no control. have to shut off the radio to stop it


yuor amp has an internal power supply problem,contact eric @ Capital Audio & electronics Repair 850-339-1130 we repair all namebrands & all models

Mar 16, 2010 | Kicker ZR360 Car Audio Amplifier

1 Answer

Amp won't turn on, red light on amp is flashing


DID THIS JUST HAPPEN ALL AT ONCE ? OR DID IT GRADUALLY HAPPEN? CHECK GROUND FROM AMP , INSTALL ONE FARAD CAP . STOCK RADIO ISNT REALLY HELPING , MOST AMPS OF TODAY TAKE A HIGHER SIGNAL FROM HEAD UNIT . ADD ONE FARAD CAP AND SEE

Jan 17, 2010 | Car Amplifiers

1 Answer

I have a kenwood kac-8452 4 channel amp that makes the speakers pulse after the volume gets turned up to 10. I also have a kenwood amp doing the same thing with my subs. any ideas?


Its not pulsing, its called clipping. The sound is being clipped due the amp being pushed past is power capacity and distorting the signal. This will damage your speakers very quickly. No amp should be turned more then 3/4 up. If its not loud enough you need to purchase a larger amp or be comfortable with the wattage it produces at 3/4 volume. You may also have speaker wires touching/crossed causing th issue.

Sep 10, 2009 | Kenwood KAC-8452 Car Audio Amplifier

2 Answers

Amp pulses


make sure our ground is good thanks pierre

Jul 17, 2008 | Pioneer GM-5100T Car Audio Amplifier

3 Answers

AUDIOBAHN a2300hct problems


This indicates a possibility of a power supply issue, you may have to open up the unit and take voltage measurements to determine if the voltages are correct. In order to do this you will need a schematic diagram of the unit. Once you have the schematic you will be abor to tell which voltages are legitimate. I hope this helps

Sep 15, 2007 | AudioBahn A2300HCT Car Audio Amplifier

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