Need help choosing between two amps

[lanman31337]

3500/5.1 = 686.27

686.27/5.1 = 134.56

I SERIOUSLY question his testing methodology.

134.56vrms across the sub = 190v rail to rail for a start

Also 134.56vrms would imply it does more like 12kw @ 1 ohm. I call fail on those test scores. Massive fail.

Erm, if you grab board pics... wanna point out where the regulation is? Cos I don't see it... anywhere... regulating ~1000A doesn't just happen without an enormous pile of componentry to do it for you.

I'm glad you chimed in, and no, I'm not being sarcastic at all. I'll start with the regulation. Again, this is from what I've been told, but the Opti maxes out at mid 15 volts, where as the XXX has no problems with it. The opti would have to be 1 1/2 times the size it is now (it's actually in a smaller case than the xxx) to be able to have voltage regulating circuitry for high amperage.

As for tests, I would like to see some real tests. For both systems.

[Boon]

I HIGHLY suspect they are damn near identical amps I wouldn't put much stock in the regulated power supply stuff. Perhaps the windings on the transformers are a little different to help the Lanzar make power at lower input voltage but other than that I don't see it.

When you get stuff like this (2 amps that are 'identical' inside) people/companies will always claim their amp has something special over the other one... I suspect many of them are just playing on consumer ignorance. It's like the rumour that the CS 5k is somehow tougher than the Atomic AT5k - if you open them up they both have 16 IFRP360LC's being driven by a 4-IC 3S driver board... even if they'd changed around some of the very minor parts it doesn't make sweet feck all difference to the amp, although fans of each brand will swear black and blue that they're completely different amps. In my mind they are identical (in fact I'm fairly sure that they are)

[lanman31337]

See now you're talking my language. If the inputs and outputs are identical, same fets, maybe one uses thin windings and another uses thicker windings, maybe different amounts and voltage/values of caps, they're still the same amp.