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Why Strap Two Amps For Only 2 Ohm Stable?


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nodiggie 
Copper - Posts: 69
Copper spacespace
Joined: August 19, 2009
Location: California, United States
Posted: September 25, 2009 at 12:31 AM / IP Logged  
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 !!!
i am an idiot 
Platinum - Posts: 13,670
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: September 25, 2009 at 5:30 AM / IP Logged  
Each amp will put out 2600 watts if strapped at a 2 ohm load.
haemphyst 
Platinum - Posts: 5,054
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: September 25, 2009 at 7:56 PM / IP Logged  
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.
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."
nodiggie 
Copper - Posts: 69
Copper spacespace
Joined: August 19, 2009
Location: California, United States
Posted: September 26, 2009 at 12:37 PM / IP Logged  
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... Why Strap Two Amps For Only 2 Ohm Stable? -- posted image.
nodiggie 
Copper - Posts: 69
Copper spacespace
Joined: August 19, 2009
Location: California, United States
Posted: October 08, 2009 at 11:12 AM / IP Logged  
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 ????
Still learning
Kraco
nodiggie 
Copper - Posts: 69
Copper spacespace
Joined: August 19, 2009
Location: California, United States
Posted: October 08, 2009 at 11:30 AM / IP Logged  
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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