one sub two amps?

the reason im thinking of using a single L7 into two amps is because of air space under the seat of my nissan titan crew cab. if i build the box to fit just right i yield about 2.2 cubic feet. if i go with the other set up i was thinking of, using two kicer 12" comp vrs i would yield about 1 to .85 cubic feet for each sub, not enough for the bass im looking for. which set up do you guys think i should go with for good bass respond. the single kicker L7 12" sub with an amp on each coil sitting in 2 cubic feet, or the two 12" kicker comp vrs sitting in about 1 to .85 cubic feet with a dedicated amp to each sub. keep in mind i want the most bass i can get. im using two phoenix gold 2350 amps rated at 350 watt rms mono. if i run the L7 i was thinking of setting the amps gain to max and using the electronic crossovers gain to match the amps as close as possible. what do you think. thanks in advance and for all th input the will help me decide oin which setup to run.gcorrea

Setting the gains to max and TRYING to use the crossovers as a "gain" = bad idea Set the gains correctly.

jeffchilcott wrote: possible, but without a very very accurate meter to set the gains on both amp and make sure 100% that they have less then 1% variance, then it is very very possible to destroy a woofer

Jeff, Jeff, Jeff... we've been over this, brother... It is PERFECTLY acceptable to run one voice coil of a DVC woofer to one amplifier, and the other coil to ANY other amplifier... Here's the article... It is PERFECTLY safe to run one amp to each voice coil... Go fot it.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."

jeffchilcott wrote: possible, but without a very very accurate meter to set the gains on both amp and make sure 100% that they have less then 1% variance, then it is very very possible to destroy a woofer

I believe the proper way to set these up is to use a very accurate meter to test the AC voltage output of each amp and get them to the same value at about 60-75% gain.  Make sure you use a test tone as close to the speakers FS as you can to test this voltage too... NO MUSIC!

Correct me if I'm wrong.

Team Edge Audio

The gain on each amp should be set just like a single amp set-up, as high as possilble without clipping. They don't even need to be set the same as long as there is no clipping. You could use a 350w amp on one coil and a 100w amp on the other coil. As long as both amps are outputing the same signal and not clipping it does not matter where the gains are set.

dstang24 wrote: I believe the proper way to set these up is to use a very accurate meter to test the AC voltage output of each amp and get them to the same value at about 60-75% gain.  Make sure you use a test tone as close to the speakers FS as you can to test this voltage too... NO MUSIC! Correct me if I'm wrong.

You're wrong. You can run two different signals into each of the two different amplifiers, and as long as you never overpower the woofer, you are still perfectly safe. You could use one 1000 watt amp on one voice coil, and one 500 watt amp on the other voice coil, 180° out of phase, crank 'em both, and you'll STILL have ZERO failure rate, as long as you do not overpower the woofer. READ THE ARTICLE from Dan Wiggins that I linked to. It's a pdf, so when you click it, and when it finishes downloading, you can even keep it on your computer for handy reference later. IT IS PERFECTLY SAFE TO RUN TWO COMPLETELY DIFFERENT SIGNALS TO A DUAL VOICE COIL WOOFER - they do not have to be the same... Here's the article again...

fakepete wrote: You could use a 350w amp on one coil and a 100w amp on the other coil.

Dude... how did we think of the same example at the same time? Oh, and clip em both off... feed that sucker square waves, and as I said above, there will be NO DAMAGE TO THE WOOFER, as long as you do not overpower the woofer. Square waves and distortion don't kill woofers, POWER KILLS WOOFERS. End of story.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."

so which of the two set ups i mentioned would any of you guys recomend, and why.gcorrea