Almost every Dynaudio LF driver is made with foam or rubber surrounds. The foam versions have a lower resonance (besides small differences in other TS parameters) as result from the different suspension forces. For instance the BM series of Dynaudio all use rubber for the surrounds in their LF drivers.
In practice 1.5dB difference between two LF drivers is a very small margin. Only a few brands can guaranty such small margin and it means the drivers need to be coded and measured individually. If someone can hear a 1.5dB difference within a small bandwidth of a complex music signal, at low frequencies, that is another question. Besides, the influences caused by room acoustics introduce by far larger values anyway.
In practice 1.5dB difference between two LF drivers is a very small margin. Only a few brands can guaranty such small margin and it means the drivers need to be coded and measured individually. If someone can hear a 1.5dB difference within a small bandwidth of a complex music signal, at low frequencies, that is another question. Besides, the influences caused by room acoustics introduce by far larger values anyway.
Right what I meant was I thought the 30W100 was only avail. with foam. Mine looked and felt like rubber too before I changed them due to the way the foam breaks down.
I've been looking at woofers recently and saw a 12 inch Dynaudio the other day. I forget the model number but the dang thing was over 1200 dollars for one 12 inch woofer. I wonder if it's really worth that much or if it's because the dollar is so weak. No way can I afford that as I need four woofers.
Dynaudio's are good but not that much good.
If you never have seen both, rubber and foam, you can mistake the foam version easily for a rubber version. The foam is indeed very dense and its surface is very smooth compared to ‘standard’ foam types. Although I have never seen foam replacements that looked/felt exactly the same the differences are acceptable imo, as long you do them both at the same time.
As far as price I guess it’s a personal thing but sure they are anything but cheap, especially if you consider today’s competition. For that reason some users use second handed "car versions" as replacement
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As far as price I guess it’s a personal thing but sure they are anything but cheap, especially if you consider today’s competition. For that reason some users use second handed "car versions" as replacement
.RIght you are, upon a closer look they are foam surrounds. Hmmm And I always thought they were rubber, but they are a very dense foam. Mind you after all these years they are very brittle. The ones I ordered are from a guy on ebay who calls himself audioaddictions I believe it is, he swears they are the exact same as the original surrounds.
You can buy new 30w100xl's for $519 in Canada.
You can buy new 30w100xl's for $519 in Canada.
I've had these drivers for probably 20 years now so I think I'll change both surrounds just to have them the same. Is there only one supplier of surrounds that most sellers buy from or are there knock-offs from China also producing these. DO you know of this company in the USA producing these surrounds? I thought there were made in Germany but I just looked it up on ebay and they say they are made in the USA.
So Mercury, what method did you use to install your new surrounds? I've seen one website where they suggested using wooden clothes pegs to center the cone. Then others have said use a 30hz signal to center the cone.
Yeah that's what I was trying to say. When the foam gets old it almost turns a little tarry so to speak which looks and feels some what rubbery but it's not.
I would not have ordered it on ebay if I were you. Hopefully it'll be exact.
The hardest part for me was pulling the old foam off from under the cone. It had turned like tarry glue and was hard to get off to say the least. I used a little alcohol which helped a little bit but very time consuming. Pull up a chair and just be careful not to damage the cone.
After that you glue the new surround ONLY around the edge of the frame. Make sure exactly centered. Let this dry completly and THEN simply slip it under the cone and glue to the cone.
Mine centered fine because I even tried pushing the cones off center and it's difficult to make the voice coils rub.
Can you tell me where I can order the 30W100'xl's from. That's something I would seriously consider. I'd need four of them (two per channel) I'll have to google the speck on them but I think they had a higher xmax so I can get them to go lower with out as much eq. I didn't think they were availiable anymore?
I was thinking of moving up to a 15inch but having second thoughts about that because I'm wanting to run up to about 200 hz for a new project I have in mind. I know the dynaudio's would still respond very well up to 200hz.
Thanks, Mark
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HI Mercury,
I'll look for the company info when I get home. I got my order from the ebay guy and he only sent one surround, their damn picture shows 2 surrounds so I sent him an email. I'll look up the company you mentioned.
Hi Vuki,
Hey thanks for the link, that guy makes it look easy. I even have a turnable of sorts that I can use. Actually it's a vegetable / dip tray that turns but I think it should work just fine for this.
I'll look for the company info when I get home. I got my order from the ebay guy and he only sent one surround, their damn picture shows 2 surrounds so I sent him an email. I'll look up the company you mentioned.
Hi Vuki,
Hey thanks for the link, that guy makes it look easy. I even have a turnable of sorts that I can use. Actually it's a vegetable / dip tray that turns but I think it should work just fine for this.
Hi Mercury,
DO you have an email address or website for speaker city, the only one I can see is in Vancouver but they don't say anything about suppling surround kits.
Okay doing another search turned up speaker city usa, is that who you ordered from? What kit did you get because I don't see one for the 30w100.
DO you have an email address or website for speaker city, the only one I can see is in Vancouver but they don't say anything about suppling surround kits.
Okay doing another search turned up speaker city usa, is that who you ordered from? What kit did you get because I don't see one for the 30w100.
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You sure they only sent you one? Mine came together one on top of the other so it looks like one but really there were two.
Oh, Sorry I just checked and it wasn't speaker city it was simply speakers. Here is the link to the kit I used which was an exact fit:
DynAudio Speaker Foam Edge Repair Kit, 11" DynAudio 30W-54, 30W-100, MW-190, FSK-11DYN
Hi Mercury,
You're right, after emailing the seller he said the same thing, they were stuck together. So I pulled the driver out and removed the old surround. Damn that old surround glue is still sticky, I wonder if the adhesive remover they sell for removing the glue left behind when you remove stickers etc. from things appliances and such things. I watched the youtube video of the guy doing a surround on a 24w100, he sure makes it look easy. I found an old vegetable tray/dip server which is on a turntable base, actually works pretty good when cleaning the old surround off.
The company who is selling the dynaudio drivers is TC Group-Americas. The guy who I was taling with is John Setej, johns@tcq-americas.com. THe drivers are the 30w100XL model not the 30w100.
These are the driver numbers he sent me.
795029011 - 30W 100XL 08 DA 87995 Woofer
795028011 - 30W 100XL DA 87980 Woofer
795027011 - 30W 100XL 04 DA 87960 woofer
He said you can place an order with any TC dealer, so I'm sure they have one in the states somewhere.
Didn't you say you had the 30w100 not the XL model? If you're interested in selling the 30w100s I know someone who might be interested in taking them off your hands if the price is right. There was a local guy selling a used pair on ebay and they went for $298 USD about 2 months.
Cheers,
Walter
You're right, after emailing the seller he said the same thing, they were stuck together. So I pulled the driver out and removed the old surround. Damn that old surround glue is still sticky, I wonder if the adhesive remover they sell for removing the glue left behind when you remove stickers etc. from things appliances and such things. I watched the youtube video of the guy doing a surround on a 24w100, he sure makes it look easy. I found an old vegetable tray/dip server which is on a turntable base, actually works pretty good when cleaning the old surround off.
The company who is selling the dynaudio drivers is TC Group-Americas. The guy who I was taling with is John Setej, johns@tcq-americas.com. THe drivers are the 30w100XL model not the 30w100.
These are the driver numbers he sent me.
795029011 - 30W 100XL 08 DA 87995 Woofer
795028011 - 30W 100XL DA 87980 Woofer
795027011 - 30W 100XL 04 DA 87960 woofer
He said you can place an order with any TC dealer, so I'm sure they have one in the states somewhere.
Didn't you say you had the 30w100 not the XL model? If you're interested in selling the 30w100s I know someone who might be interested in taking them off your hands if the price is right. There was a local guy selling a used pair on ebay and they went for $298 USD about 2 months.
Cheers,
Walter
Yeah I thought they might just be stuck together. Hope they work for you.
Thanks for the info on the 30W100-XL's However after checking the parms it doesn't look like they will work very much better than my current 30W100's.
I'm still thinking of moving up to a pair of 15's for more power in the low end.
I have lots of ideas. For instance I may keep the 30W100's and run them up to about 200hz, then put a velodyne 15inch plus for like 60hz below.
My main speakers a Acoustat 2+2 which are great but lose dynamics (as does any electrostat) at high levels low frequencies. I'm thinking put a better amp on my 2+2's while raising the crossover to 200hz will enable me to get higher levels/dynamics out of them.
I'm not for sure yet but I "think" it might be possible to run the 30W100's all the way up to 300hz. Maybe 200 should be good enough though.
Sorry getting off topic. Have so many ideas floating around in my head but it seems everything I chose to try has some time of comprimise or trade off involved.
Mark
Thanks for the info on the 30W100-XL's However after checking the parms it doesn't look like they will work very much better than my current 30W100's.
I'm still thinking of moving up to a pair of 15's for more power in the low end.
I have lots of ideas. For instance I may keep the 30W100's and run them up to about 200hz, then put a velodyne 15inch plus for like 60hz below.
My main speakers a Acoustat 2+2 which are great but lose dynamics (as does any electrostat) at high levels low frequencies. I'm thinking put a better amp on my 2+2's while raising the crossover to 200hz will enable me to get higher levels/dynamics out of them.
I'm not for sure yet but I "think" it might be possible to run the 30W100's all the way up to 300hz. Maybe 200 should be good enough though.
Sorry getting off topic. Have so many ideas floating around in my head but it seems everything I chose to try has some time of comprimise or trade off involved.
Mark
Well if it were me I wouldn't go bigger I would just go for more drivers.
Now i just have to find some good glue residue remover, after all these years and the old glue on the driver is still gooie.
Now i just have to find some good glue residue remover, after all these years and the old glue on the driver is still gooie.
yeah but can't find 30W100's anymore not to mention four of um would require a box thats to big. These like a box bigger than most 15's.
That's not the old glue that's the broken down foam stuck to the cone. Yep getting that off took me several hours. Have to be careful not to damage the cone.
That's not the old glue that's the broken down foam stuck to the cone. Yep getting that off took me several hours. Have to be careful not to damage the cone.
Well I finally got them done. Actually not too big a job. The best part is I cranked them up and no problems. Did a sweep on them and they're good to go. Although I'm not sure if the bottom end is quite the same as it was before. Could no doubt be that the new surrounds are a lot stiffer than the old ones were and it might take a while to break them in or loosen them up.
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