Originally Posted by Dylanthomasfan
Thank you for your explanation, but I must confess to being confused by your answer. Especially the last sentence.
Are you saying that given the logarithmic nature of gain calculations, the volume (SPL) increases drastically from my listening levels to when I increase by the same amount on the MCA 525 (i.e., as compared to the same when only using an MRX 720)?
When you apply a signal to a power amp, it produces a certain SPL. As the amp's input signal is increased by advancing the volume, the SPL will increase and continue to do so until a) it becomes too loud for comfort, b) the amplifier starts clipping and sounds horrible, or c) the speaker makes a funny smell.
When a more powerful amplifier is used, the certain SPL starting point is the same (volume sounds the same). As the volume is increased, a) and c) will be the same, but b), clipping, will happen at a higher SPL.
I have actually not tried to up the volume beyond -15db in my new setup. I should try that. But is it really advisable to do so, given that my PSB front are rated at 200W max (the center and the surrounds are actually 150W)? I know these are nominal numbers, but still...
Yes, feel free to advance the volume until it's loud enough. If a), b), or c) occur, act accordingly.
Deadwood II Theater
(Previous Deadwood Theater HTOM
Anthem AVM 60 7.4.4; Classé SSP-800 PLIIx 7.4; MiniDSP OpenDRC-AN
Oppo UDP-203; Oppo BDP-93; Win7 media PC w/Roon+Kodi; Roku Ultra; DirecTV Genie
Adam Audio S3V/S3H LCR, KEF Ci200QS 4 srrnd, Tannoy Di6 DC 4 hts, Hsu ULS-15 4 subs
JVC RS520; Stewart Cima Neve screen 125" diag 2.35:1, MLP at 115"