ohms, trick amp to see different?

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=25008
Printed Date: May 14, 2025 at 10:19 AM

Topic: ohms, trick amp to see different?

Posted By: devilsquid
Subject: ohms, trick amp to see different?
Date Posted: January 21, 2004 at 12:55 PM

is it possible to trick an amp into thinking a sub is 2 ohms when its really 4 ohms?

Replies:

Posted By: DYohn
Date Posted: January 21, 2004 at 1:04 PM

No.

Posted By: fatdaddyjoe
Date Posted: January 21, 2004 at 2:34 PM

no

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Posted By: Teamrf
Date Posted: January 21, 2004 at 3:10 PM

Nope...if they haven't answered your question already.

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Posted By: wvsquirrel
Date Posted: January 21, 2004 at 7:52 PM

Actually, the answer to the exact question "is it possible to trick an amp into thinking a sub is 2 ohms when its really 4 ohms" is YES. But it's not worth it because the desired result (an increase in output) will not be achieved at the sub.

To trick the amp you would wire a 4ohm resistor in parallel with the 4ohm sub (and I'm assuming that you're referring a SVC sub, not a DVC sub). The amp will see a 2ohm total load.

The reason this isn't done is because the resistor will absorb half the power output by the amp (just like a second sub would), and your primary sub would still only receive the power output equivilent at 4ohms (since most amps push out double the 4ohm output when running at 2ohms).

So, Yes you can trick the amp but it's pointless to try because your desired output result will not be achieved.

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Posted By: nedgeworth
Date Posted: January 21, 2004 at 9:27 PM

I'm with wvsquirrel on that :)

Posted By: auex
Date Posted: January 21, 2004 at 9:31 PM

I agree 100% with wvsquirrel, not worth the effort.

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Posted By: devilsquid
Date Posted: January 21, 2004 at 11:38 PM

well, now. that answered that one! Thanks!

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Posted By: wvsquirrel
Date Posted: January 22, 2004 at 1:44 AM

No problem, glad to help

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If its too loud, then you're too old
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