How much would I get for my AMP?, I have a 4 channel 700 WATT AMP Options

[hioctane]

My dad gave me an amplifier. It's a no name brand amp and it's a 4 channel 700 watt amplifier. I want to sell it but i have no idea of the pricing...........

[AudioFreak]

QUOTE (Zephyr @ Jun 25, 2003 - 7:22 PM)

We need somebody who really knows about this stuff and isn't just a layman to clear us up.

Let me see if I can clear this up.

You may see power specified in several different ways. The most conservative and reliable is continuous average power (sometimes also called, RMS power). This is the maximum power the amplifier can deliver without interruption. Usually this is expressed per channel (50 watts x 2, for example, for a two-channel amplifier), but in some cases you may see a total power spec that adds the power for all channels together. (The amplifier in the example above would have a total continuous power rating of 100 watts.) Manufacturers sometimes use more impressive, but less realistic, "maximum" or "peak" power ratings, which are based on the maximum output an amplifier can deliver very briefly. An amplifier that would have a rating of 50 watts per channel continous might be rated 100 watts per channel peak. So make sure any power specs you use for comparison are of the same type.

Power ratings normally include the impedance of the load used for the measurement. In car stereo, it usually is 4 ohms, since that's the impedance of most car stereo speakers. Sometimes you will see a 2-ohm rating, since most car amps will produce more power into 2 ohms than into 4. This is relevant only if you have a 2-ohm speaker configuration, however, such as multiple subwoofers wired in parallel.

To see if an amplifier is even capable of putting out the power it claims look at the fuse it requires. Take the wattage it claims and divide by the voltage (usually 12-14). The answer will be the amperage required to produce the wattage. This formula isn't super accurate but it gets you close. Remember that amps waste energy producing heat so whatever value you come up with will be if the amp didn't waste energy so the acutall fuse will be larger.

Take for example the MTX Thunder 942 List $650. Rated at 940 watts bridged into 4ohms at 14.4 volt. 940/14.4=65.27. So in a perfect world you would need at least a 66 amp fuse. MTX requires a 150 amp fuse for this amp.

Now let's look at a Boss Klash K680 List $239. Rated at 1400 watts bridged. 1400/14.4 (I'll use 14.4 to keep it even) = 97.22. And boss requires a 40 amp fuse. 40 amps of current at 14.4 volt can get you a max of 576 watts.

I know this is a little long and a little boring but there is no easy way to explain it. Just remember if it seems too good to be true, it probably is.