5 channel amps

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=6092
Printed Date: August 16, 2025 at 2:00 AM

Topic: 5 channel amps

Posted By: mustangadam
Subject: 5 channel amps
Date Posted: December 01, 2002 at 2:09 AM

I have a general question about 5 channel amps. Let's say a 5 channel amp has the following power specs:

50W x 4 + 150W x 1 @ 4 ohms

75W x 4 + 250W x 1 @ 2 ohms

Does this generally mean I can run 50W to each of my 4 ohm speakers, then wire my subs to create a 2 ohm load and push them at 250W? Can I do that; can I split-up the ratings the amp has based on how I want to use each of the channels? I know not all amps are the same, and some older models had a switch for 4 ohm and 2 ohm mode. No amp specs I have seen give 4 channels at 4 ohms, and then the sub- channel at 2 ohm. Please advise...

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Adam Donald Flournoy

Boeing Commercial Airplanes
7E7 "Dreamliner" Project

Replies:

Posted By: F4Pilot
Date Posted: December 01, 2002 at 9:07 PM

C'mon guys, this one needs an answer. Help us out. posted_image

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02 Odyssey / 99 F4

Posted By: Velocity Motors
Date Posted: December 01, 2002 at 10:06 PM

Yes, this means that you can run the 4 channels at 50 watts per channel and then bridge the single sub channel down to 2 ohms to achieve 250 watts of output.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: mustangadam
Date Posted: December 01, 2002 at 11:54 PM

thanks jeff

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Adam Donald Flournoy

Boeing Commercial Airplanes
7E7 "Dreamliner" Project

Posted By: Velocity Motors
Date Posted: December 02, 2002 at 8:59 AM

No problemo

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA