dash spaekers and door speakers
Thread Starter
TECH Enthusiast
Joined: Apr 2010
Posts: 516
Likes: 1
dash spaekers and door speakers Does anyone know what size the speakers are under the dash in a 1987 trans am? Also is it possible to install speakers into the doors if there are no cutouts or speakers previously installed?
Thanks
Thanks
I actually have a very good JBL package upgrade specifically for your vehicle that is a dramatic improvement over the stock system.
You get a 4x6" plate system with adjustable output for the front tweeters which is a small component set which sounds way better then the 4x6" coaxials that would be used generally. You also get a nice set of 6x9" JBL 3-way coaxials that have an adjustable output for the tweeters. Whole JBL system for $219.00 shipping included to the lower 48 states.
Here it is so you can see it:
http://www.keeaudio.com/fbodyspeakers.html
Joined: Nov 2003
Posts: 11,330
Likes: 346
From: Jacksonville, FL (originally from Toronto Canada)
Almost... the sizes are correct but the factory speakers aren't coaxial - GM didn't do anything quite so sophisticated back then. 
The front 4x6 speakers are full-range 4-ohm paper cone speakers and the rear 6x9 speakers are what GM called "extended range" - 10-ohm speakers with a slightly better cone and surround. GM's really sophisticated sound system back then consisted of an AM stereo/FM stereo cassette with graphic equalizer.
I still have a set out of my old 86 hanging on the garage wall... I don't know why I haven't thrown them out.
The front 4x6 speakers are full-range 4-ohm paper cone speakers and the rear 6x9 speakers are what GM called "extended range" - 10-ohm speakers with a slightly better cone and surround. GM's really sophisticated sound system back then consisted of an AM stereo/FM stereo cassette with graphic equalizer.I still have a set out of my old 86 hanging on the garage wall... I don't know why I haven't thrown them out.
Could have sworn my 91 GTA had coaxials but I never removed the felt cover so that little dot in the middle may have thrown me off thinking it was a tweeter under there. I never really payed attention to them as they were blown anyway and were replaced almost immediately without alot of regard payed to them.
Either way they were not very good as usual with most of Delco's early offerings.
You haven't thrown them out because secretly you want to put them in your 2000 Trans Am....!! You want the to bring back tape decks and 6x9"s. JK!!
Either way they were not very good as usual with most of Delco's early offerings.
You haven't thrown them out because secretly you want to put them in your 2000 Trans Am....!! You want the to bring back tape decks and 6x9"s. JK!!
Joined: Nov 2003
Posts: 11,330
Likes: 346
From: Jacksonville, FL (originally from Toronto Canada)
I miss my 8-tracks! 
I remember some of the more upscale GM models of the time came with speakers that had "whizzer cones" - small paper cones in the center that were supposed to increase frequency response and looked somewhat like a coaxially mounted tweeter. I don't remember them ever getting into f-bodies but my 3rd gen experience is limited to mostly 82-87 models. Your 91 may indeed have had something different.
I remember some of the more upscale GM models of the time came with speakers that had "whizzer cones" - small paper cones in the center that were supposed to increase frequency response and looked somewhat like a coaxially mounted tweeter. I don't remember them ever getting into f-bodies but my 3rd gen experience is limited to mostly 82-87 models. Your 91 may indeed have had something different.
A guy at the 2010 F-Body Gathering actually had an operational 8-Track in his 78 Trans Am and was using it. It was actually kind of cool to see it in there and working in the appropriate car.
Tried to find some info on my 91 GTA speakers and was unsuccessful. Either way....what the OP has in his 87 ride is what is important here...I got off track. Thanks for the info!!
Tried to find some info on my 91 GTA speakers and was unsuccessful. Either way....what the OP has in his 87 ride is what is important here...I got off track. Thanks for the info!!
