How-To: Fix Rear Speakers on an S70

Post by **matthew1** » 26 Jun 2004, 14:45

Another great How To from Jay (aj98s70).

Fix Rear Speakers on an S70

Super job! Thanks Jay!

potroast · Post by **potroast** » 26 Jun 2004, 17:03

an 8" speaker is quite rare indeed. I would recommend replacing with a 6.5" speaker (very common, and inexpensive) and using a ring of MDF for mounting.

The 8ohm impediance is due to the how current works. Because the headunit uses a 4-channel amplifier stable to 4ohm, you must present that load to the amp. 8 speakers means 2 speakers will be present on each channel. Two 8 ohm speakers would present a 4 ohm load to the amplifier when wired in parallel.

I do not recommend running rear speakers. They absolutely kill imaging and will degrade sound quality if you choose to upgrade to a better sound system. I suggest you spend money on 1 good pair of speakers for the front, and have nothing in the rear.

Kevin · Post by **Kevin** » 31 Jul 2005, 13:18

Jay (and indirectly Phil) -
this procedure was excellent and helped me cure problem with my rear shelf speaker on my 1998 Volvo S70. I thought the speaker was "blown", but after pulling it apart and reassembling it according to Phil's detailed procedure, the speaker works fine now.

James · Post by **James** » 19 Oct 2005, 20:31

Thanks. I never would have figured that one out on my own. They don't make it easy do they? Hope I find loose parts rattling instead of a cracked speaker!

James.

Post by **findude** » 03 Oct 2009, 04:58

I've done this repair on my 1996 850 sedan. On the 850 it is not necessary to do Steps 3, 4, or 5. Just contort yourself into the space underneath the shelf and work from there. It is less comfortable, but you will do less work and it will not take as long. You also reduce the risk of breaking something. Use eye protection in case something falls while you are taking stuff out. If it's warm out, do this in the shade because that little space will get very hot.

I chose to use some cheap epoxy and simply glue the magnets back into place, so I was able to reuse the original speakers.

Total cost: About an hour of work plus the time for the epoxy to set. I "borrowed" the epoxy from a neighbor, so no $ out of my pocket.

I did this years ago and don't remember it well, but I think I have some photos somewhere and I'll look for them over the next couple of days.