whats the differerence between a 2-channel amp, multichannel amp and a mono subwoofer amp?

Question

and what wattage should i get?

Answer 1

a 2 channel amp is two channels,(usually used for subs)a multi channel are usually 3-6 channels(usually the rear speakers and sub or the whole system) and a mono amp is 1 channel(only for subs) as for the wattage you didnt say what kind of speakers you got or what kind or what your wanting to spend that makes a big difference go to onlinecarstero.com they have several brands and good prices and reviews

Answer 2

A two channel amp is a normal stereo amp. A multichannel, though still using a stereo input, supports surround sound. And last but not least, a mono amp is just a single channel amp and when used to drive only a woofer or sub woofer, is designed to only pass the base region of the signal.
Wattage is an arbitrary issue and depends on what you are attempting to do. If you plan to fill a concert hall, you need lots of power. If all you want to do is blow the glass out of the back of your hatch back, then not quite so much. If you value your hearing over a projected life span of at least 70 years, 50 watts per channel on a motor cycle is more than enough at road speed and wearing a helmet.

Answer 3

Some things that are important besides the differences in amplifiers is the load you put on a channel.

Ohms is a measurement of resistance (impedance for AC circuits, amplifiers produce an AC signal) much like when you kink a garden hose you cause resistance in the water flow which results in an increase in pressure.

The same logic is applied to amplifiers, the lower the impedance you subject a channel to will cause it to push more power - but there are limits.

When loading with lower impedances, power is increased but at a price. The amp will run hotter, distortion will increase and the life of the amp is shortened due to excessive heat (heat and electronics don't go well together).

It's much better to match the higher impedances between channel and speaker(s). As long as you have this match, you can run more than one speaker to a channel.

The total watts RMS of each speaker must total up to what the amp needs.

There are two wiring methods for speakers and they are series and parallel.

Series http://i81.photobucket.com/albums/j230/sparky3489/SERIES.jpg will add the impedance of each speaker toghether.

For parallel http://i81.photobucket.com/albums/j230/sparky3489/PARALLEL.jpg the math to calculate this gets a bit more complicated.

Where Z is the total impedance and sp# is each speaker (or coil in a multi-coiled speaker):

Z = 1 / (1/sp1 + 1/sp2)

You can mix these two methods to acquire the correct loading impedance per channel.

Like so http://i81.photobucket.com/albums/j230/sparky3489/SERIES-PARALLEL.jpg if each speaker is 4 ohm then the loading impedance will be 4 ohms. In this case each speaker must be 1/4 the watts RMS power handling of one channel of the amp (this is typical of a mono amp and subs).

As mentioned in the parallel equation I spoke about "each coil in a multi blah blah", this is because you can get subs that are DVC (dual voice coils).

This is how to wire two DVC 4 ohm subs to get a 4 ohm load http://i81.photobucket.com/albums/j230/sparky3489/PARALLEL-SERIES.jpg each sub would need to half of the watts RMS of a mono amp.

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Answer 4

well for the wattage, wut ru trying to run? ru trying to run 500 watts or wut? but the differnce is that a mono amp means 1, so its got one channel for one sub(u can hook 2 up to the one channel though) 2 channel is has to channels for 2 subs and so on and so forth