shred

Well, thought that my car was back in one piece. Guess that I spoke too soon. Never had a stock stereo go out on me before, so this is new to me. I want to keep the stereo in my 93 FD RX7 touring, sounded nice when it worked. Anyhow right now you turn the stereo on, you get this solid loud tone no matter what the volume is, the tone is there at the same volume.

When I start the car and turn the stereo on immediatly there is no noise for a few seconds, then like something is warming-up, the noise kicks in. Assuming that it is the amplifier but I have absolutly no idea where the darn thing is, if it is separate from the rest of the car, it that is really my problem or what in the hell. All that I do know is that it is a long way to and from work every day without tunes!!

Doesn't matter if the radio or the CD player is on, that darn tone is there. Change the bass and treble mix, volume, still there, always the exact same volume, not a shrill, like a mid-level tone, just really loud but you can hear the trebble music if I turn the volume up. WTF??

shred

Hard to believe that nobody knows anything about the stock bass in a 93 RX7 FD but maby someone can tell me if I am on the right track here.

I was told that the Bose Bass has an integrated amplifier on the speaker since that is the way that Bose usually does their speaker setup for these cars so I would either have to replace the board on the speaker, if I can find one, or the whole unit.

Does anyone have a clue on this??

KNONFS

iTrader: (14)

I haven't work on a 3rd gen, but it sounds like a something is grounded, it might be somehting in the inside of the amp\radio (if any on the 3rd gen). You can trouble shoot the problem. Disconect one speaker at the time and see if the noise persist, if there is a amp (or more than one) disconect them from the radio and see if the noise is still there.

shred

Well I ripped the bass out since that was the offending sound generator. Interesting that there are two subs inthe wave guide, speakers are intact and I tried a friends bass and it worked just fine so I know that the problem is with my components and there doesn't seem to be a grounding issue. Each speaker has its own amp on the bass system, took the cards out and there doesn't seem to be any scoring or hot spots, best price on a replacement is $450.00 for original parts. Think that I can do better with an external two channel amp of some kind, any one got any cluse on this?? The two bass speakers are facing each other so close they are touching, does this mean that I need to reverse the connections on one so they compliment each other??

Chaz

Sorry I didn't see your post earlier. The loud tone you are hearing is because you have a fried amp. If you try to use two external amps for the bass tube keep in mind that the Bose system is 2 ohm. As you mentioned, the two bass speakers are facing each other so they need to be 180 degrees out of phase. If you're interested in keeping your stock system and would like a cheap repair that includes a warrenty check out this web site:

www.carstereohelp.com

This guy is a certified Bose repair specialist and does great work. He's repaired a couple of door speakers for me that had blown amps. Check out the web site's FAQ, it contains a lot of good information. To top it all off, they warranty all of their work.

Hope this info helps and good luck with the repair!

KNONFS

iTrader: (14)

The noise doesn't necessary means that the amp is fried, might be a cable that is grounded too, fried speakers, etc. Now you know the problem is directly related to your bass, did you try just one bass at the time? If you did, do you know wich one is causing the noise? If you didn't, did you use a similar speaker (same Ohm) when testing?

IMHO, I wouldn't throw $$$ at the stock system, but that would mean not being stock anymore. A good reliable source to consider it SAS Bazookas.