bridged 2 channel amp

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=85315
Printed Date: May 15, 2025 at 1:54 AM

Topic: bridged 2 channel amp

Posted By: qdaddy
Subject: bridged 2 channel amp
Date Posted: November 07, 2006 at 10:37 PM

if i have a single vc 4 ohm sub on 2 channel amp and i bridge the amp mono will the amp see 2 ohm or 4 ohm and is it safe (amp manual states 4-8 ohm allowable mono)

Replies:

Posted By: qdaddy
Date Posted: November 07, 2006 at 11:02 PM

generally speaking about all amps trying to end dispute

Posted By: Flakman
Date Posted: November 07, 2006 at 11:35 PM

Bridging the amp has nothing to do with what load is seen. A 4 ohm woofer will be "seen" as 4 ohms whether you have the amp bridged, mono, whatever. The amp will only see 2 ohms if you add another 4 ohm sub and run them in parallel.

When computing "load". Don't even bring the amp into the equation. Whatever configuration the subs are at connected to the speaker wires is the load. This will be the laod regardless of what kind of amp and how you decide to use the output of that amp (bridged, etc).

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The Flakman
I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA

Posted By: qdaddy
Date Posted: November 07, 2006 at 11:40 PM

thankx for the info that is also what i believe and have practiced for over 15 years however another installer with 10 or more years exp begs to differ with this after the manual reads as i stated

thanx

Posted By: geepherder
Date Posted: November 08, 2006 at 5:19 AM

Yes, it would be 4 ohms mono. Your friend is thinking about it producing the same load electrically as 2 ohms stereo. While it's not stereo, the load is shared between the two channels. That's where his logic comes in, you're just looking at it two different ways.

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My ex once told me I have a perfect face for radio.

Posted By: qdaddy
Date Posted: November 08, 2006 at 9:30 AM

well what the other installer is tryin to say is it is bad to 4 ohm mono a 2 ch amp with a single svc sub and that this will damage sub and amp cuz amp sharin 2 channels actually sees 2 ohm but hello we all know any amp is stable 4 ohm mono regardless of what the amp sees it still reading 4 ohm mono (4-8 ohm allowable mono) as any amp states same as (2-4 ohm allowable stereo) i think he jus got confused and to protect reputation will not admit error as most people wouldnt

posted_image thanx to everyone in advance

Posted By: qdaddy
Date Posted: November 08, 2006 at 10:50 PM

any other feedback welcome jus to affirm above stated posted_image

Posted By: Flakman
Date Posted: November 10, 2006 at 5:48 PM

I guess more can be mentioned...but the horse won't feel it.

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The Flakman
I feel strange. I have deja vu and amnesia at the same time.

John | Manteca, CA