Amplifier wiring

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=12629
Printed Date: May 23, 2024 at 3:31 PM

Topic: Amplifier wiring

Posted By: monte_old _skol
Subject: Amplifier wiring
Date Posted: April 23, 2003 at 2:07 PM

This question might sound like one of a beginner but here it is: I have one four channel amp I'm guessing about 75 watts each channel. I want to power my two 4 inch speakers in the front and my two 4X10 inch rear and also two subs either 8's or 15's.I want to do this without blowing my amp but I still want a decent sounding system.My question is how to run the wiring I was looking for a diagram because right now I'm clueless.

Replies:

Posted By: wrencher_25
Date Posted: April 23, 2003 at 3:59 PM

What's your email address and i'll send you a drawing that I made up. To let everyone else know what I did, I paralled the 4" off one channel and I paralleled the 4x6's off another. Then I went and did a bridge/parallel with the subs. If there are any concerns with that please let me know. Thanks.

But give me your email monte and i'll go and send you the picture that I made up for that drawing if you are unsure of what's going on.

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Andrew Weitzel

MECP First Class Installer

Posted By: wvsquirrel
Date Posted: April 23, 2003 at 10:41 PM

That's about the only way to go if you can't afford another amp for the subs. Unfortunately you just lost your balance(stereo) and now have a mono car. What is the make/model of the amp and all speakers? I only ask because most internal speakers are 4ohm, and running them in parallel will cause a 2ohm total load/channel for the front and rear speakers. Just want to make sure the amp can handle it.

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Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com

Posted By: wrencher_25
Date Posted: April 24, 2003 at 1:10 AM

That is true, most amps ARE 2ohm stable nowadays but always check and be sure. My buddy (who also went to school with me recommended to Tri-Mode the subs. I've never worked with tri-moding but have heard that it is frowned upon when installing. But when you do tri-mode, you'd have to start using passive x-overs right? I dunno. Try it out, see what the response to this reply is.

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Andrew Weitzel

MECP First Class Installer

Posted By: monte_old _skol
Date Posted: April 24, 2003 at 2:57 PM

Thanks for the help I think I'll just add another amp later to push my 15s but for now I'll do like that guy said and parallel the mid and highs. I got another beginner question here: I mounting my amplifier in the trunk so how should I run the speaker wires from my deck.Should the speakers run directly to the amp then the deck or should the deck wires connect to the speakers then the amplifier?

Posted By: speedwayaudio1
Date Posted: April 24, 2003 at 4:38 PM

run rca cables from your head unit to the amp and then speaker wire from the amp to the speakers. what ohm load are your 15s ? unless they are 8 ohm and you parallel them to 4 ohm your amp will over heat and shut down. i'm sure that it's not 2 ohm stable bridged. If you have 4 ohm 15's and series them into 8 ohms the amp will handle it but, the power will be cut in half and at only 150 watts thats 75 x 2 bridged you can't afford that kind of lose and your subs will be way under powered. try this until you can get another amp. run your full 4" and 4x10" speakers of your head unit. and double bridge your amp for your subs alone. it will hit harder a lot harder. remember to have fun with it. hope that i was able to help you.

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Big Dave