what is this mosfet thing i see on alot of decks?

whats it do?

thanks

MOSFET (Metal Oxide Semiconductor Field Effect Transistor )is a kind if transistor (a electrical switch) that controls current in an amplifier. Most outboard amplifiers use MOSFET transistors because they are a lot more efficent (produces less heat, in turn makes more output power) and because they are a very fast switch which in turn means a great effective frequency range (ie it sounds better). A lot of head units still use Bi-polar transistors mainly because of cost and packaging reasons but do not have the capabilities of a MOSFET powered head unit. Hope this helps, I'm terrible at explaining this kinda stuff in writing.

Darren

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Bi-Polar

oh ok so is it new tech or been around for a while and they have just started branding it cause it sounds cool?

It's not new at all. Outboard amplifiers have been using them way before I started in car audio and that now 12 years (I feel soooo old when I say that).

They've been advertising heavily on headunits in the past few years (Pioneer brought out the first MOSFET headunit in 1999) and cheaper amp brands like to splash it across their boxes because consumers use that to link cheap amps with more exxy amps (oh they both have it, so it must make it the same). As with most things, be aware that there are quality mosfets and not-so-quality mosfets.

Darren

__________________
When in doubt, Pull it out...