i have been collecting old speakers like 6x9s and stuff when i up grade. now i want to hook the up in my garage bit how do i know how many my cd player can push with out an amp

Can you be more specific? What speakers, what cd player, etc

I gotta agree. Nowhere near enough information to give you a good answer.

Chances are, though, if you're talking about a portable CD player, it'* not gonna push much more than it was built with. To keep them portable, they don't put a lot of extra amp in them due to weight.

If it'* a home system that'* been retired to the garage, you might have a bit more lee way

also it really depends on the Ohm ratings on the speakers and the cd player / amp. If you wire to many speakers in paralell to the amp, the Ohm load will be to small and burn up the amp

Many home stereos are rated at 8 Ohm and some at 4 Ohm.
I have seen stock car speakers at 3, 4, 6, 8, and 10 Ohm.

Whatever you decide to do, make sure you keep track of the Ohm load.

the cd player is an older stock pontiac. and the speakers are a few old 6x9 out of different cars. i had the radio converted to run on 110