Re: SRX718 to 'what powered/active sub?'
Marjan, I know you build speakers. Have you ever measured average power vs peak power vs actual output? In reality, being able to exceed 500W RMS long-term means nothing other than you make some more heat. Power compression negates any benefits.
In my not overly humble opinion, I want as much peak power as I can get, and I'm perfectly content to have maximum continuous amp power at or a little below the actual thermal capacity of my drivers.
I'm surprised amp manufacturers haven't caught on and offered amps with conservative continuous ratings and 10dB more peak power. Something that actually makes sense that no one does!
Edit: if you really care how your subs perform, start comparing port area. It is far more important than a few hundred watts of input power.
