Front speakers are 6.5 rear are 6X9.
Depending on if you have the Monsoon sound system or not, it may differ. If you don't have Monsoon: Front Doors: 6 1/2" & 1" Tweeters Rear Deck: 6 x 9 I'm not sure what is in a Monsoon system, I do not have one, but I hear that it has 8 speakers throughout the car.
lol. answer it
Two 4 by 6's in the lower doors, two tweeters in the corner of each front door, and two 6 by 9's in the back deck
Nope. The Trans Am radio was like the rest of the Pontiac radios, but only the Trans Ams had the 'Monsoon' on the radio face. No other ones did. Nope. The Trans Am radio was like the rest of the Pontiac radios, but only the Trans Ams had the 'Monsoon' on the radio face. No other ones did.
6.5" 2 ohm in the doors, plus 1 inch 4ohm tweeter if you have monsoon 6.5" dual 4 ohm voice coil subwoofer in the sail panel. (highly recommend Elemental Designs) 4x6" round 4 ohm speaker + 1" tweeter if you have monsoon. There are no 2ohm voice speakers that I know of, so your sound output will be slightly lower with aftermarket speakers. If you dont have Monsoon, then you have 6.5" 4 ohm speakers, standard replacements apply.
gm/Pontiac radio harness
I do not know about the standard system but if you have the optional Monsoon system, the front speakers are already 2-way component and the back speakers are component 6.5 subs.
Monsoon loudspeakers are available at an average cost of $99. The price will obviously depend on the size and model of the speaker. The more expensive they are, the better the 3D sound effects will be.
The dry air which absorbs moisture and brings rainfall.
It is possible that there is a break in the wiring between the radio and the speakers. It is also possible that either a component or inline fuse is blown.