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Powering my car audio system - Car Audio & Video

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  • joe_87_ty Dec 23, 2008

    all will be going into my 1995 nissan hardbody x-cab

    cant decide between 2 12" kicker solo x's or a single 18" solo X on 2 ZX2500 amps.

    the stock alts on these truck are weak and need to be upgraded, respooling is not an option because u can only get 95 safe amps from the stock case.
    also planing to get dual batteries.

    so whet HO alt woul you prefer? wat kind of batteries should i go with?
    and what else would i need to get everything working smoothly

  • joe_87_ty Dec 23, 2008

    only a 2 farad cap for 5k watts? u need 1 farad per cap so ill need a 5 farad



    and btw 0 and 1/0(a.k.a alt guage) are both the same size wire

  • joe_87_ty Dec 24, 2008

    thomas all u said was to explain in more detail thats all i got...

  • Thomas May 11, 2010

    what is the problem? explain in more detail.

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Posted on Dec 23, 2008

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You need to have an alternator capable of putting out 200 amps. I would run 0, or 1/0 power wire and a 0 or 2 ground. Deep cycle batteries preferably two ran in parallel and a 2 Farad capacitor.

Posted on Dec 23, 2008

  • Victor Ramos Dec 23, 2008

    Im sorry I thought you were running one amp.

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How do you figure out the amount of amp your altinator need to put out to run a multi amp car audio system


Your amp will have a peak and steady wattage specification. Then the formula is Amps = Power/14. You can make an estimate of peak and steady amps from that. It is worth noting that at a lowish voltage like 12V, high power produces high currents.

The job of the alternator is to charge up the battery, which you would know. Once the battery is charged up fully the alternator is effectively disconnected by the regulator. So to prevent the battery from running down in use the alternator needs to supply enough current to your audio amps, plus enough to run the car as well.

A typical alternator in a medium size car can produce about 14V and 50-70A, This is regulated to about 10A at 14V. So if your audio amps pull about 5A they would be developing about 5 x 14 = 70 watts steady. Peak power spikes can be buffered by the battery. Most car audio systems are nowhere near this powerful.

Mar 25, 2015 | Cars & Trucks

1 Answer

I have an 2002 Nissan altima and DA display on the radio is working but no sound


Hi candy Love , I love that name ! What Altima ? S ,SE or SL

AUDIO

Revision: May 2004 2002 Altima

AUDIO PFP:28111

System Description EKS002KQ

BASE AND MIDLINE SYSTEM

Refer to Owner's Manual for audio system operating instructions.

Power is supplied at all times

 through 15A fuse [No. 31, located in the fuse and fusible link box]

 to audio unit terminal 6.

With the ignition switch in the ACC or ON position, power is supplied

 through 10A fuse [No. 6, located in the fuse block (J/B)]

 to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

Audio signals are supplied

 through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16

 to terminals + and - of front door speaker LH and RH

 to terminals + and - of rear door speaker LH and RH

 to terminals + and - of tweeter LH and RH.

BOSE® SYSTEM

Refer to Owner's Manual for audio system operating instructions.

Power is supplied at all times

 through 15A fuse [No. 31, located in the fuse and fusible link box]

 to audio unit terminal 6, and

 to Bose speaker amp. terminal 1.

With the ignition switch in the ACC or ON position, power is supplied

 through 10A fuse [No. 6, located in the fuse block (J/B)]

 to audio unit terminal 10.

Ground is supplied through the case of the audio unit.

Ground is also supplied

 to speaker amp. terminal 17

 through body ground B117.

Audio signals are supplied

 through audio unit terminals 1, 2, 3, 4, 13, 14, 15, and 16

 to speaker amp. terminals 23, 24, 25, 26, 27, 28, 29, and 30.

Audio signals are amplified by the speaker amp.

The amplified audio signals are supplied

 through speaker amp. terminals 2, 3, 9, 10, 11, 12, 13, 14, 15, 16, 18, and 19

 to terminals + and - of front door speaker LH and RH

 to terminals + and - of rear door speaker LH and RH

 to terminals + and - of tweeter LH and RH

 to terminals + and - of subwoofer LH and RH.

SPEED DEPENDENT VOLUME CONTROL (MIDLINE SYSTEM AND BOSE SYSTEM)

If activated, the radio output volume will be automatically adjusted to compensate for increased driving noises

at higher driving speeds.
The radio receives a vehicle speed signal from the combination meter, and selects the output volume.

Feb 01, 2015 | 2002 Nissan Altima

2 Answers

I have recharged a low battery on two different occassions and both times all radio info was cleared. Whu Happen? Car being 2001 Hyundai Sonata.


Hi Duffygolfer,

I understand your problem that your car audio FM settings were getting deleted automatically.

For you information, please understand that most of the car audio systems will retain the settings stored to in it will be retained in the audio system memory by making use of the battery power even when the car is switched off and key is removed.

So in case if the car battery is removed or gone into low battery, then there will be disconnection in the power sent to the car audio system for retaining the user customizations like FM frequency, settings, etc.

As you have said that your car battery ran out of power twice, thats the exact reason for why all your car audio player FM station settings has been wiped out.

I hope you understand the reason behind your problem and this does not denote any problem with your car audio device.

Thanks

Mar 30, 2010 | Car Audio & Video

1 Answer

My audio system did not start this morning. I pushed the power button, but nothing happened. All other systems are functioning normally. I checked the audio system fuse and is OK.


remove the audio system from the car and check it directly from a power source if it is OK then check the battery connection to it and if not you need it to fix it perhaps change the inner transformer or something.please give me a feed back

Mar 15, 2010 | 2007 Toyota RAV4

1 Answer

97 GLX audio system won't power up


seems a lot of money to check a feed wire ,dont you have a family member whos handy

Jan 06, 2010 | 1997 Volkswagen Passat

1 Answer

Why do I have a high piched, whine through my audio system (that seems to align with the engine speed) when I plug my Sirius Sattelite radio into the system's Aux jack and power it with one of the vehicles...


The "noise" is coming from the alternator and is being injected into all powered accessories. Some devices are better at filtering than others.

Best way to eliminate the noise in your audio system is to add a low-pass filter (aka choke filter) on the input power wire to the audio system (red wire?). That will "pass" the noise to ground.

Since the whine is in the 800-5000 cycles per minute, like the engine rpm, you will need a low-pass filter around 5000x60 = 30KHz.

A decent car audio shop can install the proper ampere and frequency filter.

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1 Answer

Rear seat entertainment system only come through the stero


Most likely the audio settings of the system are not set correct, check the audio settings and ensure they are set to the rear screens headphones instead of the car stereo.

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