#1
Well I put a new cd player in my car and the stock radio is a 4in x 4in square, I wanted to make a box about 4.5 sq. with like a 3.5in speaker or 4in speaker, so I can just plug my travel guitar right into it when I am bored and so it will cheaply fill that space, anybody know any kind of speaker that small that would sound good with a guitar running through it?
#3
Why not just buy an actual mini amp?
They're worth it because they probably will sound better+are less trouble, then building one out of a car radio.

And yeah, wrong forum.
Call me Wes.
Gear:
Fender American Deluxe HSS Strat
Chicago Blues Box Roadhouse
Bad Cat Cougar 5
1957 Gibson GA-5
Ceriatone 18w TMB Combo
Hughes & Kettner Tube Factor
Various Ibanez TS9s
Weber MASS Attenuator