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

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

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

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

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

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.

I guess that's my question. The Rel manuel does not address connecting two subs to a stereo amp only to mono blocks. Is it ok to leave off one lead of the high input connector to each sub i.e left to left, right to right . Giving you left & right signal for each channel to each sub. So instead of 3 leads to each sub I have 2 leads to each sub.
Thanks, Greg

This is as much a question rather than a response, but if you're running 2 Rel's (ie a left and a right), why wouldn't you drive each of them from only one channel? Does the input require two + signals?

I had assumed you would drive the left sub off the left channel out, and right off of right, so you would just leave the yellow lead dangling, or have a cable made up with only 2 leads.