1989 Corvette Speakers

Reply Subscribe

Thread Tools

Search this Thread

Jul 14, 2012 | 03:25 PM

Red89'-L98

Thread Starter

Burning Brakes

Joined: Mar 2012

Posts: 768

Likes: 22

From: California

FL Events Coordinator

St. Jude Donor'13

1989 Corvette Speakers

My speakers turn on and when they do they pop and have a weird high pitched noise and my antenna is broke off so I could never tell if my speakers and amps were good. So I went out and bought a cassette tape today and went to test and all I could hear was the pop and high pitched sound even with the cassette in, no music at all was coming out.

Could this be, because my antenna is broke or what? Also if I were to replace all speakers and the head unit in the car would that fix it guaranteed or would it still do that?

Would like to get that fixed before I replace everything so it does not ruin the new equipment I just bought.

Thanks, Stephen

Jul 14, 2012 | 03:33 PM

tazdpc

Heel & Toe

Joined: Nov 2009

Posts: 18

Likes: 0

Sounds like the amps are bad. I have replaced all of mine. (all four) New/rebuilt ones may cost $50 - 100 a piece. Replacing the ones in the door speakers are a PITA. If the car does not need to be all original, you may want to investigate replacing the whole system or go without music.

Jul 14, 2012 | 03:42 PM

Red89'-L98

Thread Starter

Burning Brakes

Joined: Mar 2012

Posts: 768

Likes: 22

From: California

FL Events Coordinator

St. Jude Donor'13

Quote:

Originally Posted by tazdpc

Do you know if the speakers will work at all without an antenna, if I am using a cassette tape? Or would no antenna make it not work at all.

Jul 14, 2012 | 04:37 PM

GREGGPENN

Race Director

Joined: Nov 2003

Posts: 12,220

Likes: 446

From: Overland Park Kansas

2020 Corvette of the Year Finalist (appearance mods)

C4 of Year Winner (appearance mods) 2019

Music for cassette is not dependent on the antenna. Even the radio is only dependent [on the antenna] for reception.

Jul 14, 2012 | 04:43 PM

Red89'-L98

Thread Starter

Burning Brakes

Joined: Mar 2012

Posts: 768

Likes: 22

From: California

FL Events Coordinator

St. Jude Donor'13

Quote:

Originally Posted by GREGGPENN

Music for cassette is not dependent on the antenna. Even the radio is only dependent [on the antenna] for reception.

So the cassette should work anyway? If so then do you happen to know what is wrong with it to why it will not work and is only making a high pitch sound and popping noise.

Jul 15, 2012 | 01:16 AM

GREGGPENN

Race Director

Joined: Nov 2003

Posts: 12,220

Likes: 446

From: Overland Park Kansas

2020 Corvette of the Year Finalist (appearance mods)

C4 of Year Winner (appearance mods) 2019

One of the speakers (or amps) is grounded to the frame (frayed wire). Could also be blown amps as already suggested.

Since speaker wire goes thru the door(s), that's a good spot for failure.

Lots and lots of these Blose amps blow.

Jul 15, 2012 | 04:21 PM

mako41

Pro

Joined: Sep 2008

Posts: 694

Likes: 27

From: St James New York

This is a very common problem on early C4's with the Bose systems. The capacitors in the built in Bose amps are all fried. Your amps which can be found in the 4 individual speaker enclosures need to be rebuilt.

Check out these links;

http://carstereohelp.net/troubleshoo...rvetteBose.htm

http://carstereohelp.net/troubleshoo...vetteBose1.htm

http://www.carstereohelp.com/strcorvette.htm

http://forums.corvetteforum.com/c4-t...more-time.html

https://www.corvetteforum.com/techti...D=58&TopicID=2

You can try to do this yourself or send the amps out to have it done w/a lifetime guarantee for $80~$85 per amp.

Last edited by mako41; Jul 15, 2012 at 04:28 PM.