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two subs, two amps?


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usc45cal 
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Posted: September 25, 2011 at 9:31 AM / IP Logged  
i have been wondering if channel separation of a sub would work , by this i mean having two amps , two subs one wired to each amp but only using one of the two rca cables per side , I think it would work ,and if you are asking why i would want to do this , its because i would think with the music i listen to (heavy super fast kick drums metal) it would not only separate the channels but in turn run the subs more efficiently hence cleaner more responsive bass .
thanks
jim
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Posted: September 25, 2011 at 11:20 AM / IP Logged  
Are they identical woofers?  Are the amplifiers identical as well?   Tell us about the woofers, and the amplifiers.  Single voice coil, dual voice coil, the impedance of the coils.  What is the minimum safe operating impedance of the amplifiers. 
usc45cal 
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Posted: September 25, 2011 at 11:29 AM / IP Logged  
yes two matched spl 12 inch dual voice coils , with matched spl 400d amps 1 ohm stable , now i should mention im running one of each right now with the other woofer and amp still in the box and im running it at 1 ohm , so my thought was why not run two separates with channel channel separation, as i stated one rca to each amp ??? my thinking into this was if you pull one rca off your sub amp you lose bass ie one channel , i just dont know if im correct
thanks for posting
jim
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Posted: September 25, 2011 at 11:53 AM / IP Logged  

Your amplifiers are one channel amplifiers.  You may need to feed signal to both RCA input jacks of each amplifier. 

What you are wanting to do is done daily.  It will work just fine.

usc45cal 
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Posted: September 25, 2011 at 11:58 AM / IP Logged  
thats what i wanted to try though only one rca per amp
usc45cal 
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Posted: September 25, 2011 at 1:09 PM / IP Logged  
i should add these woofers are in separate boxes
i am an idiot 
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Posted: September 25, 2011 at 1:31 PM / IP Logged  

Left RCA to one amp and right RCA to the other amp.  However, depending on the amp, you may have to use Y adapters to feed both inputs of each amp.

usc45cal 
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Posted: September 25, 2011 at 1:38 PM / IP Logged  
kool thanks for the replies
regards
jim
haemphyst 
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Posted: September 26, 2011 at 10:26 AM / IP Logged  
1-ohm load.
Metal kick drums.
SPL drivers.
SPL amplifiers.
And you're worried about "clean bass"...
Jim... That aside, there is no stereo information that will be discernable below 80Hz in the car - it's physics. If you don't already have the gear, but are considering the purchase of MORE gear to achieve this result, you'll gain nothing with the additional outlay of cash.
If "audiophile" bass is what you're after, you are going the wrong way, amigo...
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."
soundnsecurity 
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Posted: September 26, 2011 at 7:28 PM / IP Logged  
ill give you a hint. as a fellow lover of all that is metal, the two things that matter most is a good mid and the discipline to keep your sub turned down and let the mid do the work from about 120Hz and up. if you let the sub have too much bandwidth then it just doesnt sound as "quick" as it needs to be to keep up with rapid double bass drum, not to mention trying to play accurate notes from a bass guitar with distortion applied. its just too must for a sub to handle by itself.
it might take a little bit of playing around with gain and crossover settings to find a sweet spot for your particular equipment but it does exist.
if you do this til the sound is clear and "quick" but you find you dont have enough volume or punch, then you should think about spending your money on better equipment instead of more equipment.
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