Car stereo amp

[bigdaz]

Ok so I have a vintage pioneer ke-1300 car stereo which has only 2 channels left and right, and is very low power by today's standards, I've got some new speakers which are a lot more powerful then the old ford ones so I would like to fit an amp, the speakers are 30watt rms each so what amp will I need and how do I wire the amp then go from a two channel stereo to a 4 channel amp or do I need a 2 channel amp and wire two speakers to each channel?
Damn I'm so confused lol

[SmokeEm]

Assuming you want to end up with 4 speakers, find yourself a 4x50w Max amp and use that. Wiring will be very simple, especially if you have pre-outs on the stereo itself?

[bigdaz]

Yes I want to end up with 4 speakers, no the stereo doesn't have pre outs, just left and right with a shared ground

[SmokeEm]

Then you need a 4x50w amp that accepts high level inputs. You will obviously need to split the common earth into 2.

[bigdaz]

Ok thank you, and what about the stereo only having two channels? Will that still work ok with a four Chanel amp

[ChasR]

If you are just using the front two channels yes it will but of course the rear channels won't do anything on most 4 channel amps.

Your other choice would be to get a HU with RCA outputs.

[fad]

You can bridge two channels to 4, provided you know what impedance the amp is expecting and the output of your stereo. Some amps even have a bridging kit with them.

[gazz81]

Use a line level converter, this will allow you to connect a pair of rca's to your existing speaker outputs on the headunit. Then use a pair of 'y' splitters, this will give you four channels to your amp.