2-channels means you can hook up 2 speakers to it and 4 channels you can hook up 4 speakers and if you run mono to the 4 channel that means that you're running that max. power to 2 speakers. there no different in performance between the two. i would go for the 4 channel, it be cheaper than buying 2 channel amps.
actually 2 channel means the amp has a left and right channel. meaning if you hooked up 2 speakers to it you would hear the difference between them in stereo sound. (for example, if a CD makes a sound effect on the left channel you will hear it mostly through the left speaker). you can also hook up 1 speaker to a 2 channel amp if you desire. this is called bridging. you can do the same for a 4 channel amp (hooking up 2 speakers to 4 channels). if they have the same overall power rating, the only difference b/w the 2 is the ability to fade F/R with the 4 channel.
An Ohm is a unit of impedance, or resistance. it tells you how much resistance is on the electrical current. 2 ohms is half the resistance of 4 ohms so therefore twice the current will flow through the coil at a given voltage (theoretically).
A forum community dedicated to Mazda MX-6 owners and enthusiasts. Come join the discussion about restorations, performance, upgrades, modifications, classifieds, troubleshooting, maintenance, and more!