2 amps, 2 coils, 1 subwoofer...questions.

[NSTALN 10+ year member]

Howdy folks,

It is my intention to run (2) different sub channels from (2) different 5 channel amps (JL HD900/5's) to a single sub with dual 4ohm voice coils(TC Sound TC1000 15).

The signal will be a single RCA output from an Alpine PXA-H800...it has to be single RCA because I will also be using the 'center' channel RCA which leaves only (1) subwoofer output.

Anyways that RCA will be run through a 'Y' adapter and sent to the input of each amps sub-in. JL provides a handy voltage measuring method for setting gain...so the plan is to set each gain as close as I can to one another...I have (2) of the same model Fluke meters so I can try to match them in real time and as exact as possible.

Are there any issues with my plan? Anything I'm over-looking? The amps may not put out the exact same power...will a tiny variance in output between the coils cause any issues?

Thanks.

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[hispls 5,000+ posts]

Just match the gains and any crossover/EQ/phase controls as close as you can and you should be good to go. Tolerances between amps should be close enough, and the coils are simply wound side by side so they'll be identical give or take half a turn.... so everything is identical enough for practical purposes.

 

[ciaonzo 5,000+ posts]

Agree. You should be okay.

You're gonna love that TC1K 15". What type of enclosure did you settle on? Going sealed by any chance?

 

[NSTALN 10+ year member]

Agree. You should be okay.
You're gonna love that TC1K 15". What type of enclosure did you settle on? Going sealed by any chance?

Looking in the realm of 2.5 sealed.

 

[ciaonzo 5,000+ posts]

Looking in the realm of 2.5 sealed.

Nice and tight. Should do well with that power.