I'm having a sub issue. I have the Nakamichi sound system. The prior owner added a two channel amp (pioneer PRSx320) and a pioneer sub. I can't tell exactly how the new amp and sub were added, but I assume the installer bypassed the sub channel in the nak amp. There is a line output converter in the rear deck near the sub.

I've had the car for about 7 years and about 4 years ago the sub stopped working. I replaced the line output converter and the sub worked great again. The sub started acting up again last fall, working sometimes, not working others, and occasionally the sub would start working after having not worked for a while and soon after it started to work, the sub would thump and pop until it quit working again. It seems like it works best when the temperature outside is either cold or very warm, but even then it only works for a little bit.

I bought another line output converter and installed it today but the sub doesn't work at all, so I don't think it's the converter that is giving me problems.

One of the rear speakers isn't working (they are original speakers) so I assume it's just a blown speaker, but I wonder if that speaker and the sub are both not working because of the way the new sub was added, ie, the connection is loose.

Do any of you have any thoughts on what my problem is? Eventually I'm going to upgrade my rear speakers to a pair of 2 way 5.25 in speakers, and then upgrade the door speakers and tweeters too, but I want to get my sub working first because it really makes me happy!

Thanks in advance for any advice!

Tom

 

It is the Nakamichi stereo in the car. Anybody else have this problem and was it a simple fix or simple to troubleshoot?

 

its good to see you stuck with the originality of the sound system, im not to fond of after market stuff.