Originally Posted by Onions
budget isnt huge here im jsut looking so when i look in stores. New to you, lol i have an idea what im getting into
its easy. You know your looking for a monoblock amp. Impedance means 4 ohm will draw twice the amount of 8ohms. So for example a amp can supply 200w for 8ohm 100w for 4ohms. Connect them up in series you add them up. So 2x 4ohms will give you 8. Parallel it would be halfed 2x 4ohms will give you 2 basically.
You get Single Voice Coil (SVC) and Dual Voice Coil (DVC) speakers. A SVC speaker has one voice coil and one set of terminals, one positive and one negative. A DVC speaker has two voice coils, each with its own set of terminals. Because of this, DVC speakers typically subwoofers got more wiring options than SVC speakers.
If you see a amp that got 'Max Ratings' in between its specs look straight past it. The crap ones you will see that spec on it.
Alpine, Linear Power, Orion, Eclipse, etc etc will never post such a spec on their amps.
To spot the good amps from the pretenders look at the efficiency. Takes a bit of quick calculations but you don't need spot on. Look at the rms values they provide. If its a 200w amp then just look at the fuse. If the fuse is 20A walk away.
Why? Always make it 50 percent to make it easy for yourself. So 400w in and 200w out. Now a car battery produces bout 14.4v which is 35A.
Now look at the Amp 14.4v x 20A (fuse) gives you 280w but they say 200w. That gives you what a efficiency of around 90 percent which is crap. A class a/b amp runs 66 percent efficient so someone is talking crap. So just take the rms value x 2 then check the fuse and x the value by 14.4v. Then the first total devided by the second total will give you your efficiency. It should be around 40 percent to 50 percent or in the class a/b range of 66 percent. If its over that they're talking crap.
If your looking for a bass amp ignore the snr values because they're snr numbers are normally crap.
See not so difficult. You don't need to know who's crap and who's not. You can work it out yourself and you will see the bogus from the good ones