6.5" front and back
Front and Rear 6.5 Inch
Front speakers are 6"1/2 Rear speakers are 6"X9" Front speakers are 6"1/2 Rear speakers are 6"X9"
I dont advise it, but if you have a stock head unit, you will have to run your subs off of the door speakers. they will not be getting as much power as they should and neither will your door speakers.
You can buy a speaker harness. An adapter that connect the positive and negative from the speaker into the stock harness.
stock springs
I'd check the speaker wires although my first suspicion would be the old, stock speakers. Do they rattle or emit no sound at all?
The 1993 Honda accord, I believe, does NOT have CD Player. It only have cassette and radio player.
they dont ship stock with rear speakers.
6.5 fron and rear
http://www.installdr.com/InstallDocs/Honda/PDF/466053.pdf
150 at 5,700 rpm