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DQ-10 woofer dilema

 

I have this pair of DQ-10's I've been getting ready to restore/rebuild. One of the woofers has had the foam surround redone and they did what looks to me like a terrible job. The other one looks original as far as I can tell.

Online I found what was described as a fully rebuilt pair of DQ-10 woofers so I bought them thinking it would save me time and trouble. Now that I'm getting ready to start working on these things the woofers aren't the same. The frame and magnet are the same - but it's a full 12" woofer. Even though they are a direct fit I'm guessing these are a no-go for the DQ-10?

Here are some photos. Original on top, purchased on bottom:



Thoughts? Do I try them or is this just a complete no-go? I'm guessing they will sound very different than the originals. I looked online and have not been able to find a pair that looks the same - even on old advents.
 

Sell them on as they are not correct and they will most certainly voice the dq10 differently.


On Tue, 2 Jan 2024, 22:20 , <creativegeek@...> wrote:
I have this pair of DQ-10's I've been getting ready to restore/rebuild. One of the woofers has had the foam surround redone and they did what looks to me like a terrible job. The other one looks original as far as I can tell.

Online I found what was described as a fully rebuilt pair of DQ-10 woofers so I bought them thinking it would save me time and trouble. Now that I'm getting ready to start working on these things the woofers aren't the same. The frame and magnet are the same - but it's a full 12" woofer. Even though they are a direct fit I'm guessing these are a no-go for the DQ-10?

Here are some photos. Original on top, purchased on bottom:



Thoughts? Do I try them or is this just a complete no-go? I'm guessing they will sound very different than the originals. I looked online and have not been able to find a pair that looks the same - even on old advents.

 

If you think the original speaker can be saved, the best re-foaming place I've used is http://millersound.net
You can e-mail them and see if they can rescue the previous bad job. Bill is very helpful





On Tuesday, January 2, 2024 at 08:16:01 PM EST, drianhodgson <drianhodgson@...> wrote:


Sell them on as they are not correct and they will most certainly voice the dq10 differently.


On Tue, 2 Jan 2024, 22:20 , <creativegeek@...> wrote:
I have this pair of DQ-10's I've been getting ready to restore/rebuild. One of the woofers has had the foam surround redone and they did what looks to me like a terrible job. The other one looks original as far as I can tell.

Online I found what was described as a fully rebuilt pair of DQ-10 woofers so I bought them thinking it would save me time and trouble. Now that I'm getting ready to start working on these things the woofers aren't the same. The frame and magnet are the same - but it's a full 12" woofer. Even though they are a direct fit I'm guessing these are a no-go for the DQ-10?

Here are some photos. Original on top, purchased on bottom:



Thoughts? Do I try them or is this just a complete no-go? I'm guessing they will sound very different than the originals. I looked online and have not been able to find a pair that looks the same - even on old advents.
 

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The top one in the second photo looks like an original DQ 10 woofer. It has a Masonite surround so it’s a 10 inch woofer in a 12 inch frame. ?This one should work well. If you’re not familiar with rebuilding speakers, I would send it to a professional and have them check it out. I use Simply Speakers in Florida. They’ve done a great job on 3 DQ 10 woofers that I had them refurb.?

I would not use the second 12 inch woofer in these speakers. It was the original design that Jon Dahlquist had for them, and some of the early speakers have a full 12 inch woofer, but for reasons mentioned in posts on this site, they switched to a 10 inch woofer in a 12 inch frame

Maybe someone here has one of the original advent woofers they’d be interested in selling? You could also search craigslist or other used speaker forums to see if you can find one.

Other folks here can chime in why, but I wouldn’t use the 12 inch woofer in the DQ 10s… It just won’t sound right.?

On Jan 2, 2024, at 5:20?PM, creativegeek@... wrote:

?I have this pair of DQ-10's I've been getting ready to restore/rebuild. One of the woofers has had the foam surround redone and they did what looks to me like a terrible job. The other one looks original as far as I can tell.

Online I found what was described as a fully rebuilt pair of DQ-10 woofers so I bought them thinking it would save me time and trouble. Now that I'm getting ready to start working on these things the woofers aren't the same. The frame and magnet are the same - but it's a full 12" woofer. Even though they are a direct fit I'm guessing these are a no-go for the DQ-10?

Here are some photos. Original on top, purchased on bottom:



Thoughts? Do I try them or is this just a complete no-go? I'm guessing they will sound very different than the originals. I looked online and have not been able to find a pair that looks the same - even on old advents.

 

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I did my first surrounds with a Simply Speakers kit, and it was a breeze.

They work fine!

On Jan 2, 2024, at 9:02 PM, Bob G via groups.io <bobg717@...> wrote:

?
The top one in the second photo looks like an original DQ 10 woofer. It has a Masonite surround so it’s a 10 inch woofer in a 12 inch frame. ?This one should work well. If you’re not familiar with rebuilding speakers, I would send it to a professional and have them check it out. I use Simply Speakers in Florida. They’ve done a great job on 3 DQ 10 woofers that I had them refurb.?

I would not use the second 12 inch woofer in these speakers. It was the original design that Jon Dahlquist had for them, and some of the early speakers have a full 12 inch woofer, but for reasons mentioned in posts on this site, they switched to a 10 inch woofer in a 12 inch frame

Maybe someone here has one of the original advent woofers they’d be interested in selling? You could also search craigslist or other used speaker forums to see if you can find one.

Other folks here can chime in why, but I wouldn’t use the 12 inch woofer in the DQ 10s… It just won’t sound right.?

On Jan 2, 2024, at 5:20?PM, creativegeek@... wrote:

?I have this pair of DQ-10's I've been getting ready to restore/rebuild. One of the woofers has had the foam surround redone and they did what looks to me like a terrible job. The other one looks original as far as I can tell.

Online I found what was described as a fully rebuilt pair of DQ-10 woofers so I bought them thinking it would save me time and trouble. Now that I'm getting ready to start working on these things the woofers aren't the same. The frame and magnet are the same - but it's a full 12" woofer. Even though they are a direct fit I'm guessing these are a no-go for the DQ-10?

Here are some photos. Original on top, purchased on bottom:



Thoughts? Do I try them or is this just a complete no-go? I'm guessing they will sound very different than the originals. I looked online and have not been able to find a pair that looks the same - even on old advents.

 

Thanks guys. Part of me was thinking maybe they'll be fine since I'll be crossing over to a sub around 60hz. But the motor structure looks different. To me the chances of them sounding the same are slim. So yes, I'll send the poorly rebuilt one off since I don't trust myself to do it right - and I don't really have the time. I don't even really have time to rebuild these, but it's something I want to do so I make time here and there for it.

Thanks for the input. The Simply speakers guys are just a couple miles from me, but I have to mail it to them anyway - they're rules for some reason. Or I'll send it to this Miller Sound. I really was hoping I had saved myself time and trouble buying a set of rebuilt ones. Dumb of me to let them sit there for a couple months trusting there were exactly that. Tempting to just get the "new" Advent replacements that Simply speakers sells, but again, I'm doubting they sound the same. After all, when I look at old pictures, the old Advents also had that masonite setup for whatever reason.
 

I would use the least "worked on" pair that you have since any woofer that's had the cone, spider
voice coil parts replaced is likely not correct because replacement parts are close or just look the
same.? I look for replacements used that just need foam and leave everything else original.
Check glue joints.
Check for flatness of the spider.
Carl (RIP) measured the all new replacement and the in box Fc is too high due to a stiffer spider.
Measurements are posted on the Classic Speaker Pages.

Pete Basel

On Wed, Jan 3, 2024 at 6:47?AM <creativegeek@...> wrote:
Thanks guys. Part of me was thinking maybe they'll be fine since I'll be crossing over to a sub around 60hz. But the motor structure looks different. To me the chances of them sounding the same are slim. So yes, I'll send the poorly rebuilt one off since I don't trust myself to do it right - and I don't really have the time. I don't even really have time to rebuild these, but it's something I want to do so I make time here and there for it.

Thanks for the input. The Simply speakers guys are just a couple miles from me, but I have to mail it to them anyway - they're rules for some reason. Or I'll send it to this Miller Sound. I really was hoping I had saved myself time and trouble buying a set of rebuilt ones. Dumb of me to let them sit there for a couple months trusting there were exactly that. Tempting to just get the "new" Advent replacements that Simply speakers sells, but again, I'm doubting they sound the same. After all, when I look at old pictures, the old Advents also had that masonite setup for whatever reason.

 

If I were in your shoes, I would refoam both woofers at the same time so they perform similarly and have the same lifespan. Foam surrounds should last 10-15 years before deteriorating. It's convenient that Simply Speakers is close to you. I had them refoam a pair of woofers 15 years ago and they do good work. Bill LeGall does fantastic work and he can rebuild almost anything, but he will probably charge more and I don't think it's necessary for a simple refoam job. That's just my 2 cents. I hope you get the speakers up and running soon!?

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