Not necessarily... the phoenix gold Xenon amps used a regulated power supply as well, which was not a well-known fact. An amplifier attempting to pull power that just isn't available will result in serious voltage drop. Amplifiers have a protection circuit that kicks in at low voltages (varies between manufacturers) for a reason... it is not good for the amp, and will end up damaging it. A draw that serious on too low of a voltage will usually cause clipping in the signal, if the amplifier doesn't protect or go up in smoke first. You also stated that the individual burping with a couple of thousand watts is getting square waves AKA clipping. While that may not be a big deal during his short burps, supplying such a signal to a system used on a daily basis is not healthy for either the sub or the amp. Also, yes, it is possible not to drop below 12.6v on music... with an incredibly stout (expensive) electrical system. Also, while he will not see 2600 watts continuously, there will be spikes in the draw depending on the frequencies being played. I agree with what you say as far as burping is concerned. However, for a daily system above 1krms, a stout battery is needed in my opinion. I propose that we agree to disagree lol.
