Hooking up two Rel Storm III's to Pass Labs X-350

With a single sub, the sub will sum the signal on the red and yellow leads, low pass filter it, send it to the internal sub amp, then on to the speaker. With two subs I see two possibilities:

1) Attach the red lead from one sub to the right amp channel output positive and the red lead from the other to the left channel amp output positive. Black lead on each sub to its respective amp channel output negative. Yellow leads unused.

2) Attach the red and yellow leads from one sub to the right amp channel output positive and the red and yellow leads from the other to the left channel amp output positive. Black lead on each sub to its respective amp channel output negative.

Because the sub sums the signal on the red and yellow leads, option 2 will result in each sub being about 6db louder than option 1. It may result in too much bass, but experiment and see.

NO NO NO... unless you want smoke and flames. The Pass amps are all full complementary ie balanced designs, meaning the black speaker output is driven. The signal ground must not be taken from the speaker terminals on balanced amplifiers

Send an email to Sumiko. They have been very responsive and helpful every time I have questions about my REL.

Kent, Check out the thread 5-29-06.... "Running two Rel subs on one Amp- possible?" This worked for me. My phone call to Sumiko is what confused me last summer and lead to the smoke and flames and you guys bailing me out.
Thanks again, Greg Leavey

Kent From Pass Labs, I'd appreciate your thoughts on my double Rel hook-up to my X-350. Because it low levels are awesome. I'm now concerned with the mids and highs. Could it be my Adcom Gfp-750 Pre?
Thanks, Greg