i want to use my car amp for my home hi fi
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=4871
Printed Date: July 05, 2025 at 2:47 AM
Topic: i want to use my car amp for my home hi fi
Posted By: jhiggs
Subject: i want to use my car amp for my home hi fi
Date Posted: October 27, 2002 at 8:50 AM
i recently bought a new amp and replaced my old sound stream granite 120.4 amp i dont want to trow it away so i want to use it at my room. i figured it will make my hi fi sound even better if only i know how to do it. i only know the basics like wiring up my audio/video sys. please help. cant even power the amp!
Replies:
Posted By: Velocity Motors
Date Posted: October 27, 2002 at 9:02 AM
Get a regulated power supply to power the amp. The input signal you can use from any source ( CD player, tape player, DVD, VCR, etc ). Just use a jumper wire from the 12 volts to the remote turn on and it will work for you.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jhiggs
Date Posted: October 27, 2002 at 9:18 AM
thanks let me get this straigth, got a 12V power supply here, this is the part i want to be carful with i have to jumper the +12V to the remote? as for the ground should be connected to the (-) of the power supp.?
Posted By: AW1208Q
Date Posted: October 27, 2002 at 10:19 AM
you can can get a power supply from your local radio shack for less than 40. hook the amp ground to the (-) on the power supply. hook the remote wire to the (+) output on the power supply to get the amp to turn on.
Posted By: Velocity Motors
Date Posted: October 27, 2002 at 11:08 AM
Also you have to make sure that the speakers that you are powering can support a 4 ohm stereo load. Just make suer of this before you power up any speakers.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jhiggs
Date Posted: October 28, 2002 at 7:33 AM
done! we did it i guess it powers up ok. also i attached a 4ohms speaker to it. the only thing im poundering on is getting the bass i used to get in my car? got some info how to do this?
Posted By: SnomanF150
Date Posted: October 28, 2002 at 8:55 PM
stick the box in a corner and load it up.. you might wanna check the power supply you have.. if the voltage is dropping, no power.. that little 5amp, radio shack inverter not going to cut.. might want to look into getting an Astron power supply
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George
David's Car Stereo
Baton Rouge, LA
Posted By: jhiggs
Date Posted: October 30, 2002 at 8:24 PM
well, how many amps do i need?
Posted By: SnomanF150
Date Posted: October 30, 2002 at 10:21 PM
Depends on the amp... remember a basic rule........ watt / voltage = Amps in other words, if you have a 120 watt amp, with 12 volts, you need 10amp power supply.. of course, that's with a 100% effiency rating.. and we all know AMPS ARE 100%, Right??!?!?!?!!! yeah.. right.. A little Ohms law basic math is all that's needed here.. ------------- George
David's Car Stereo
Baton Rouge, LA
Posted By: jhiggs
Date Posted: October 31, 2002 at 7:31 AM
ok, this is getting more clearer to me. thank you this is very informative. but what will happen when i amperes are short than the amp require?!
Posted By: jhiggs
Date Posted: October 31, 2002 at 7:32 AM
or higher for that matter?
Posted By: chasesaccessori
Date Posted: October 31, 2002 at 11:09 AM
It doesn't matter if you have a power supply that gives you more amps than you need. If your power supply doesn't have enough then your going to heat up the power supply, possibly burn it out, and you will not get the bass you want. ------------- (owner/installer)
Chase's Accessories
Ridgecrest, CA
in business since 92
Posted By: jhiggs
Date Posted: October 31, 2002 at 8:38 PM
the power supply i have only has 10.3 amp. i think ill get a higher one. thanks
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