Originally Posted by HarlemSpank
An amp cannot "create" more power than it draws, amp's do use storage caps for reserve power that is used for repeated short burst's of time, but not sustained, 20ms or so with higher distortion. Hence the term "burst rating". Just to clarify.
Well their primary use, is to smooth rippling in the rails from the AC to DC conversion (at least in the old-school amps that was true), their secondary side-effect is that they can also supply brief amounts of high-current when the PS is asked to make something big. Caps only last a second at these Farad levels and Watts.
Of course it can't create more power than it draws, but it can store and briefly produce more power than it is drawing ATM;
but... it then has to draw even MORE current off the utility (output demand + charging power) to charge the cap back up to full. So it's win some, lose some.
I don't know about the distortion part, I've never heard anything bad unless the clip/limit light was flickering or steady-on.
Originally Posted by notnyt
Just because it can output 38a max, does not mean it is doing this at 150v.
There are two unknown variables in Gruppen's metric, they don't state the resistance, or conversely, the voltage. So you can't solve the Ohms Law formula without two knowns. This is what Nyt is talking about.
There is one thing we can do though, and that is plug in some values and guess at which one they did it at.
2ohms @ 38amps is 76v and 2888w
4ohms @ 38amps is 152v and 5776w
8ohms @ 38amps is 304v and 11552w
Based on this, I don't think they were talking about 8-ohms (unless bridged), maybe 4 or 2 ohms. Likely a burst-power figure though.Edited by BassThatHz - 12/17/13 at 12:55pm