Woofer re-foam again?

[Scrappy 335]

Hello all, I am curious if it is possible to re-foam woofers multiple times?

Here’s the scoop … I have been looking for vintage speakers, not sure what, but something that when I see them I will know.  Big … not too big …

 

I stumbled upon a set of Pioneer DSS-9’s.  Began reading up on them to know I probably shouldn’t mess with them.  

Famously brittle woofers with polymer graphite cones and dual voice coils.

 

Super sexy Beryllium tweeters

 

I have never had a set of monkey coffins before … I liked what I heard … and I made a rash decision.

 

Speakers are in decent shape with the exception of the missing woofer rings.

 

They looked to have been re-foamed before and it appears to be pretty messy. Which leads me to the question, can they be re-foamed again?

 

I don’t dare touch them as I don’t have the steadiest hands.  My search will go out to a few speaker specialists (already tried to contact Midwest Speakers).  Any other recommendations would be appreciated … I would like these to be done right.

 

Man if I can get these into full restoration, they should sound choice flanking the C19 / TFM4.0.

 

Thanks for any suggestions!

Scrappy

 

 

[Rob 5,977]

In my experience, I have not liked the outcome of my Re-foam job and pulled the surrounds off to do them again. 

 

I don't see an issue doing it more than once or twice as long as the cone survives. 

 

Good luck on the project!  

[wrf 4,936]

Check out my thread about rebuilding a pair of Amazing Silvers.  

 

 

[3M_Audio 2,025]

As @Rob and @wrf pointed out, there shouldn't be too many problems re-coning a second time - assuming whoever did the job the first time didn't do anything crazy like using weird glues or damaging the cone. But even then, you could do a complete re-cone, if needed.

 

If Midwest Speaker can't help you out, also check The Speaker Exchange (https://reconingspeakers.com/). They can repair pretty much any driver in any condition.

[Scrappy 335]

On 6/21/2025 at 7:01 AM, wrf said:

Check out my thread about rebuilding a pair of Amazing Silvers.  

 

 

Wow!  Wish I had those capabilities … Awesome thread!!!  Thank you

[Scrappy 335]

17 hours ago, 3M_Audio said:

As @Rob and @wrf pointed out, there shouldn't be too many problems re-coning a second time - assuming whoever did the job the first time didn't do anything crazy like using weird glues or damaging the cone. But even then, you could do a complete re-cone, if needed.

 

If Midwest Speaker can't help you out, also check The Speaker Exchange (https://reconingspeakers.com/). They can repair pretty much any driver in any condition.

I appreciate the recommendation!

 

Midwest replied with “Worse case is that we can totally rebuild them, but we will have to use paper cones”.

 

That got me thinking if a paper cone would be the best option over all the other materials out there?  Maybe I am ultimately being too concerned?  Maybe I just need to concentrate on the packaging for shipping 😬

 

If it were you, which facility would you send these too?  Midwest or Speaker Exchange?  I like the sound of the ability to repair any driver in any condition (pretty much).  Maybe I should send out an email to them as well and get their take on the situation.

 

Thanks for the help!

[Rob 5,977]

Another resource that i used a lot because they always had what i needed is Simplyspeakers.com

 

And i think they were the ones that gave me the CD to use for centering. It worked great.

[Scrappy 335]

17 minutes ago, Rob said:

Another resource that i used a lot because they always had what i needed is Simplyspeakers.com

 

And i think they were the ones that gave me the CD to use for centering. It worked great.

Funny you mention them Rob … I was just reading about them on a forum page elsewhere.  Good to know your experience with them … thank you for the suggestion!

[3M_Audio 2,025]

23 hours ago, Scrappy said:

I appreciate the recommendation!

 

Midwest replied with “Worse case is that we can totally rebuild them, but we will have to use paper cones”.

 

That got me thinking if a paper cone would be the best option over all the other materials out there?  Maybe I am ultimately being too concerned?  Maybe I just need to concentrate on the packaging for shipping 😬

 

If it were you, which facility would you send these too?  Midwest or Speaker Exchange?  I like the sound of the ability to repair any driver in any condition (pretty much).  Maybe I should send out an email to them as well and get their take on the situation.

 

Thanks for the help!

 

If it were me, I'd send Speaker Exchange an email with a few pictures and see what they think.