As I discovered with my a pair of home Mission HiFi speakers of a certain age, the membrane supporting the cone was biodegradable and gradually turns to dust as your speakers have. I think its time to raid the piggy bank![
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Front speakers
- Thread starter Geoff_Fields
- Start date
pauljmcnulty
Active member
Wondered if any of you audio experts could tell me if these are the cause of my poor stereo sound? Lots of distortion and no bass at all. 



blade7
Well-known member
Geoff997 said:As I discovered with my a pair of home Mission HiFi speakers of a certain age, the membrane supporting the cone was biodegradable and gradually turns to dust as your speakers have. I think its time to raid the piggy bank![]
Mission 752's I've got are over 15 years old, still work fine, door speakers in my 944 are history though.
The best ones I have found for the fronts too retain existing grill is Mac Audio 915.2. Anything else I have found pushes the grill off. I have my Alpines that were supposed to be like for like replacements but the tweeter is a bit proud. You can have them for postage costs if you would like them.
Paul.
Paul.
pauljmcnulty
Active member
Already replaced, thanks Paul. Massive difference! [
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pauljmcnulty
Active member
There was a JBL option recommended ages ago. These were now discontinued, but they do another that fits fine. It's really not my thing, so they might be rubbish, but they sounded fine today with the Winery Dogs on full volume and the roof out! [
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Mission 707 circa early 80's. Just google them and you'll see it was a common issue.blade7 said:Geoff997 said:As I discovered with my a pair of home Mission HiFi speakers of a certain age, the membrane supporting the cone was biodegradable and gradually turns to dust as your speakers have. I think its time to raid the piggy bank![]
Mission 752's I've got are over 15 years old, still work fine, door speakers in my 944 are history though.
jellytott
Member
944 front speakers are pants because they have limited elliptical fitment option (Alpine, MBL,Mission) bless them due to Porsche here deciding the hole and placement in the doors, so if the speakers are to deep will fail hitting on the back magnet as the window goes all the way down and if proud of the door cards will get squashed between dash and door when closed. . Importantly please realize being "elliptical" the shape of these type of speakers are known to having a terrible base response and a topp'y sound compared to round speakers.
Concentrate on the rear speakers and fit larger over sized speakers, its was easy l found on 944S as the Porsche fitment is smaller than intended, I found this on my 944S as
the hole on the car body had a wooden ply template fitted in the larger hole for the larger speakers so in my case fitted with a smaller fitment hole with a smaller speaker in this wooden ply template, Also, it isn't just about better speakers you'll have to fit sound deadening material (bit similar to carpet square being heavy rubber/tar construction and sticky backed) plus finally thicker cables rather than the Porsche thin cables.
If your going to remove the rear speakers, be aware the door cards as the vinyl door cards the door card front vinyl trim fits under the rear window rubber so you will have to carefully remove this from the window rubber too.
Concentrate on the rear speakers and fit larger over sized speakers, its was easy l found on 944S as the Porsche fitment is smaller than intended, I found this on my 944S as
the hole on the car body had a wooden ply template fitted in the larger hole for the larger speakers so in my case fitted with a smaller fitment hole with a smaller speaker in this wooden ply template, Also, it isn't just about better speakers you'll have to fit sound deadening material (bit similar to carpet square being heavy rubber/tar construction and sticky backed) plus finally thicker cables rather than the Porsche thin cables.
If your going to remove the rear speakers, be aware the door cards as the vinyl door cards the door card front vinyl trim fits under the rear window rubber so you will have to carefully remove this from the window rubber too.
Yes no problem Oli, PM me an address.zcacogp said:Paul190H,
If those Alpines are still on offer then I'll happily give you some beer tokens for them.
Oli.
Cheers
Paul.
blade7
Well-known member
Geoff997 said:Mission 707 circa early 80's.
I think you may have had your money's worth from them.
Fitted new driver units purchased from Mission now used as surround sound rear speakers, so should be able to squeeze a little more value out of them



