Upon first look at the room picture, I exclaimed "Oh my God!"
Cover the TV. Add something to the right wall to reduced reflections. While the minimalist shelving has nice esthetics, it's a disaster for reflections. I didn't do the math, but the wall/ ceiling corners could be a problem.
Perhaps with the subs in the previous install, rolling the low end made life easier for the amp.
What speaker cables? Perhaps the amp does not like the ESL/cable load?
the Spires have phenomenal bassin that room!
Cover the TV. Add something to the right wall to reduced reflections. While the minimalist shelving has nice esthetics, it's a disaster for reflections. I didn't do the math, but the wall/ ceiling corners could be a problem.
Sensitivity: 91 dB/2.3 Volts/Meter.Seems like the amp should drive to S T U N [110+db @ 3m] unless it is giving up into:
Nominal Impedance: 4 Ohms (0.8 Ohms at 20 kHz)The bottom end impedance is 50-100x 20k. I've never been a fan of amplifiers with so many output devices per channel. Transistors are non-linear devices and into a complex load with 20 devices per channel, unless the devices and driver circuitry are extremely well selected, things can get ugly in a hurry.
Perhaps with the subs in the previous install, rolling the low end made life easier for the amp.
What speaker cables? Perhaps the amp does not like the ESL/cable load?