We live in a time where we have Access to much more speakers then what our local dealer can offer. Since we can't demo everything measurements give us an idea on the sound profile. It's sad (and not surprising) that some companies are reluctant to send anything here because instead of...
The website states it has a -6db at 23hz for a 10k subwoofer I would want much better performance. Flagship monoprice svs jtr and rbh subs would out perform at a 1/3 of the price. Synergy between sub and speaker from any brand can be achieved with dsp.
Sound united is rebranded as Massimo now. Maybe someone else knows more but I was under the impression that Denon has always been under the sound united stable and that it's was marantz and b&w that was acquisitioned by that company.
I looked up your pioneer 9040 avr and it's 14 years old. Upgrading to a Denon x4800 with dirac would be the most noticable upgrade. Decoding the lastest codex, hdmi 2.1 and better internal amps. Ability to turn off amp sections for front 3 speakers for a separate amp in the future
A nc502mp amp should have enough gain for the output voltage of your current avr. Purifi and higher model hypex amps need more input voltage then what your avr can output cleanly.
There are some variables that spl calculator doesn't account for. At what frequency is that 104.1 db with 110watts achieved. Does it account for the impedance dips hard phase angles. For instance Revel f208 dip to 3.4 ohms the amount of wattage in those areas at those frequencies are going to...
Sierra Lx are low efficiency speakers (83db@1m) your choice of amplifiers are on the low end of available wattage unless buying 2 la90 discreet and bridging them. A buckeye nc252mp will be 200 cheaper than the topping and provide more wattage. For 200 more than the topping you could get the...