Why Strap Two Amps For Only 2 Ohm Stable?
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=116532
Printed Date: June 28, 2025 at 1:35 PM
Topic: Why Strap Two Amps For Only 2 Ohm Stable?
Posted By: nodiggie
Subject: Why Strap Two Amps For Only 2 Ohm Stable?
Date Posted: September 25, 2009 at 12:31 AM
I am currently building a new system after 20+ years of being out of car audio. I'm talking Sanyo/Pyle days. lol
Q.
I purchased mono amp and plan on running 1ohm for max output. However, you can "strap" this amp but they will only be stable at 2ohm. So, each amp would only put out 1700rms@2ohm instead of max 2600@1ohm. What am I missing here?
If I were to buy another amp, I would just run 1 2ohm dvc to each amp for 1ohm load giving me max output for both - 2600 x 2600 per sub. right?
I guess if space were an issue and you could only fit 1 sub, that would make sense to me.
After reading some extremely informative posts here on the12volt, I didn't even play around...the first thing I did to my corolla is The Big3 !!! Pretty painless and it solved my alt noise problem not to mention giving me a good start or base to build on. Now to get that HO Alternator... :) - thanks all for sharing your knowledge !!!
Replies:
Posted By: i am an idiot
Date Posted: September 25, 2009 at 5:30 AM
Each amp will put out 2600 watts if strapped at a 2 ohm load.
Posted By: haemphyst
Date Posted: September 25, 2009 at 7:56 PM
Strapping two mono amplifiers is the same as bridging a stereo amplifier. The individual amplifier channels will "see" twice the load (half the impedance) when strapped. They will individually make the same power as they would if connected to a 1-ohm load, so the load (the speaker) will receive twice the power.
In this "strapped amplifier" case, the single 2-ohm load (the speaker) would recieve as much as 5200 watts. And yes, you are correct, it is the same amount of power as it would be if you were to run one amplifier to each 1-ohm voice coil of a 1-ohm DVC woofer. Is there any benefit to one way or the other? In this case, not really.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: nodiggie
Date Posted: September 26, 2009 at 12:37 PM
Thank you for the clarification.
I guess the amp manufacturer assumed I should know this fact without publishing the spec for "strapped" amplification. See there, you learn something new every day !!
Thanks again.....
Now to figure out how the heck to run 1/0 through my firewall... 
Posted By: nodiggie
Date Posted: October 08, 2009 at 11:12 AM
Trying not to start new thread here...
I have a bxi2610 and want to strap a second amp.
Is it possible to run two 1ohm dvc subs in series for 2ohm load each and land all 4 leads to the strapped amps for a 1ohm load?
Hifonic's manual only shows single sub in there illustration. I figured what would it matter if there is 1 single sub or 10? The final load is what matters right ????
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Still learning
Kraco
Posted By: nodiggie
Date Posted: October 08, 2009 at 11:30 AM
nodiggie wrote:
Trying not to start new thread here...
I have a bxi2610 and want to strap a second amp.
Is it possible to run two 1ohm dvc subs in series for 2ohm load each and land all 4 leads to the strapped amps for a 1ohm load?
Hifonic's manual only shows single sub in there illustration. I figured what would it matter if there is 1 single sub or 10? The final load is what matters right ????
I think I see my error here...... the strapped amps are going to split the load again for .5ohm load arn't they? darn ------------- Still learning
Kraco
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