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Car Audio for my Garage - what do I need?

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Old 01-07-2009, 08:57 PM
  #11  
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Originally Posted by TragicMagic View Post
This Kenwood amp has two 25A fuses in it. Wouldn't that mean that a unit capable of producing 60A would be sufficient?
60A will be enough to power the amp and other gear like the HU. Small note, you will probably need a 220v outlet to power a PS like that.

Ill say it before Yuli, you need 2 capacitors!
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Old 01-07-2009, 09:31 PM
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i have a 50 amp 12v power supply that i got out of a demo board. Regular 120v power from the wall... had it hooked up straight to amps/deck as well as a big battery, having it on the battery made a difference, filtered out noise in the system. However wasnt too bad without the battery either.
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Old 01-08-2009, 01:15 AM
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Originally Posted by lpchouinard View Post

btw, if you want to power an HU an old PC ATX PSU will do the trick (+12v @ 14A)
To get your 60amps out of a PC power supply you will need a 750 watt unit -60amps * 12volts = 720 watts. You would probably be okay with a 600watt unit as I doubt your amp will be pulling the max amps from it. 600w / 12v = 50amps. My brother in law is a computer genious so if you want to go this way let me know. He can get parts real cheap and can mod them to work better as well as wire terminals on the outside.
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Old 01-08-2009, 01:27 AM
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A basic power source for a PC tower would work too? Can you give me more details as to how that would be implemented? That route seems a little more feasible, assuming it works properly.
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Old 01-08-2009, 01:46 AM
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http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3247721&CatId=2533 <<< Link.

How 'bout that puppy? Has an output of 62A on the +12V line. Not sure I'm using the right terminology. And I still need to determine how the wiring would be done to the amp. The amp usually gets a 4AWG cable from the battery, getting power from the alternator. I'm having a hard time grasping how this little unit would be able to properly power an amp. The wire is tiny. lol

Off to do more research.

Should also mention that not all 700W+ PC power supplies will provide 60A on the 12V. If you check the specifications on this unit, you'll see that it only outputs 18A on the 12V. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2235424&CatId=2533

Last edited by TragicMagic; 01-08-2009 at 01:48 AM.
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Old 01-08-2009, 01:50 AM
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how about an old car battery and a car battery charger? hook up the amp as usual and put the charger on the battery, and presto you've got power. A friend of mine has a shop and its been running like that for years. He even uses a chrysler factory HU!
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Old 01-08-2009, 01:59 AM
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Originally Posted by TragicMagic View Post
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3247721&CatId=2533 <<< Link.

How 'bout that puppy? Has an output of 62A on the +12V line. Not sure I'm using the right terminology. And I still need to determine how the wiring would be done to the amp. The amp usually gets a 4AWG cable from the battery, getting power from the alternator. I'm having a hard time grasping how this little unit would be able to properly power an amp. The wire is tiny. lol

Off to do more research.

Should also mention that not all 700W+ PC power supplies will provide 60A on the 12V. If you check the specifications on this unit, you'll see that it only outputs 18A on the 12V. http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2235424&CatId=2533
Yup that first one would work real well. I think it would be better to hook up a car battery as well. Go from the power supply to the battery and then run the 4ga to the amp. Would be the same as using a charger, but will be better, as PCs need clean power. If you go this route PM me and I will get my bro in law to let me know exact details on the wiring.
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Old 01-08-2009, 02:06 AM
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More options never hurt.
I plan on hooking up a cheap 150WRMS 10" sub too. Is there any likelihood that the car battery/charger combo will have a hard time keeping up with the draw the amplifier will put on it. I know its not a lot of power, I just don't have any idea how much power the charger is putting into the battery.

http://www.canadiantire.ca/browse/product_detail.jsp?PRODUCT%3C%3Eprd_id=84552444188 8879&FOLDER%3C%3Efolder_id=1408474396672454&bmUID= 1231397653858

Is this unit overkill? I have my OEM Hyundai battery sitting in my garage. I replaced it mid-October with an Interstate Megatron. The old battery should suffice, right?

I can ground the amp to the negative on the battery. Can I do the same with the head-unit?
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Old 01-08-2009, 02:18 AM
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Originally Posted by TragicMagic View Post
More options never hurt.
I plan on hooking up a cheap 150WRMS 10" sub too. Is there any likelihood that the car battery/charger combo will have a hard time keeping up with the draw the amplifier will put on it. I know its not a lot of power, I just don't have any idea how much power the charger is putting into the battery.

http://www.canadiantire.ca/browse/product_detail.jsp?PRODUCT%3C%3Eprd_id=84552444188 8879&FOLDER%3C%3Efolder_id=1408474396672454&bmUID= 1231397653858

Is this unit overkill? I have my OEM Hyundai battery sitting in my garage. I replaced it mid-October with an Interstate Megatron. The old battery should suffice, right?

I can ground the amp to the negative on the battery. Can I do the same with the head-unit?
IMO You would be better off with the PC power supply. Cheaper and more amps. The most you will get out of that charger is 15amps as the 100 amp setting is for boosting and will not run for more than a few minutes. The one we have at work says no more than 5 mins continuous on boost mode. You may have problems with the battery as it will be constantly draining. Not too sure about that part though. If it was me doing this and I may be soon, I would use the PC and battery option.
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Old 01-08-2009, 02:32 AM
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Originally Posted by TragicMagic View Post
More options never hurt.
I plan on hooking up a cheap 150WRMS 10" sub too. Is there any likelihood that the car battery/charger combo will have a hard time keeping up with the draw the amplifier will put on it. I know its not a lot of power, I just don't have any idea how much power the charger is putting into the battery.

http://www.canadiantire.ca/browse/product_detail.jsp?PRODUCT%3C%3Eprd_id=84552444188 8879&FOLDER%3C%3Efolder_id=1408474396672454&bmUID= 1231397653858

Is this unit overkill? I have my OEM Hyundai battery sitting in my garage. I replaced it mid-October with an Interstate Megatron. The old battery should suffice, right?

I can ground the amp to the negative on the battery. Can I do the same with the head-unit?
the link doen't seem to work but the charger he has is a 40amp at max and 25 when he has it hooked up. The charger charges the battery then the system runs off that. He runs his all day and no problems yet, however he does not use a sub just a kenwood 4 channel running 8 ohm home theater speakers. It's a very large shop 2 bays 3 or 4 cars deep and it sounds fine. The charger and battery should be fine as long as your not pounding on it for a long time. As for the amp and deck they would be grounded to the neg. terminal of the battery

Last edited by godzilla1978; 01-08-2009 at 02:34 AM.
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