These 350's are awesome. I've been leaving my 600 out of the loop for now, calibrated the speakers to 75dB and the subs individually to 70dB, which brings them up combined to around 75dB's.

When playing some of the subwoofer test songs on youtube they are tight, deep, and gutwrenching. I also just ran through some of the RealTraps test tones that start at 10hz and work up to 300hz in 1hz increments every 10 seconds. With my volume adjusted to 70dB's from 13ft away, the 350's combined started registering at 15hz with around 60dB's and rised to 70dB's at 17hz. If just using 1 350 I was at 19hz to achieve the 70dB's.

Keep in mind that my room is 7500 cu ft. These 350's are amazing.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85