B&W DM602, DM604 - repair with long-life special made rubber surrounds.
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- Опубликовано: 9 сен 2017
- Speaker repair surrounds for different Bowers & Wilkins Sorrento series, like the DM601S3, 602.5S3, 603S3, CM2, CM4, CM6 (6,5 inch), DM602S3, DM604S3, type ZZ12882, ZZ10129, ZZ12874, ZZ10065 (7 inch) where the grey surrounds will get hard an inflexible, and at the end will tear apart.
( for ordering: www.repairyourspeakers.com/en... )
We offer a video to repair them with our rubber surrounds, with use of simple tools. P.S. The old surround on the backside is still strong and flexible, you can see this on the video. We glue the new surround over the left over grey intact rubber, and made the old rubber airtight closed with glue. We like to make the repair easy, good and at a low price with simple tools. P.S. These are real rubber surrounds. If you choose another colour it might be that you will be having the same problem in a short time.. Comments are welcome! 
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This is so great, I'm gonna try this on my friend's speakers. Thanks so much!
Thanks for the great video! Helps a lot! One thing I don’t understand: What is the circular line with the felt-tip pen for?
definitely curious about this as well
This video is really very good. Plenty od usefull details. Thanks for sharing.
Good morning, thanks for your friendly reply :-)! With kind regards, Fred
Why are your replacement surrounds thin and black, not thick and grey like the original ones?
Hi, nice job, I have a pair of B&W CM6, the grey bass driver surrounds are all very rigid now, the cones are also a silver colour, can you advise please if the surrounds are right for the 4 bass drivers in CM6, thank you
Good morning, sorry for my late reply. The Bowers & Wilkins CM6 needs a rubber 6,5 inch rubber surround. You van find these on the following link: www.repairyourspeakers.com/en/foam-rubber-surrounds/bowers-wilkins/b-w-cm2-cm4-cm6-1x-rubber-surround-repair-video/a-2393-10000066 . Best regards, Fred
Can anyone enlighten me as to the correct glue to use for this? I have some of these that now need to go through this fix. I’ve managed to get hold of the rubber surrounds but am not sure what’s best to adhere it to the cone. TIA
Good evening, thanks for your reply. Sorry for our late reply. In itself, our offered adhesive is strong enough. You should then apply the glue as described on our webshop as evenly as possible, and wait until the glue is approximately from white to 50 - 65% translucent. The glue can be found at: www.repairyourspeakers.com/en/glue-brush-syringe/glue-for-speaker-repair-1-x-15ml-best-tested/a-1675-11 and more information at: www.repairyourspeakers.com/en/repair-videos/glue-brush-fluid/c-3 . Best regards, Fred
Good morning... what do you use to degrease?
Good morning, in the case of B&W cm4 columns... should I choose black or light suspensions?
what do you use to degrease?
You plan to do something about that damaged phase plug in the middle? It does serve a purpose, which is now compromised.
i saw that too..thought about same . and would guess that this driver may be junk and they just used for demo of doing the surround. just a guess tho.
Do you know if its the same on the Aluminium cone on a DM603s3 Sorrento.....and do you have the rubbers for them??
Good morning, thanks for your reply. I'll guess that you have a some newer model, because of the aluminium cone. Nevertheless you can look if the 6,5 inch surround fits, I've put the sizes of the surrounds on the webshop: www.repairyourspeakers.com/en/foam-surrounds/bowers-wilkins/g-10000066. With best regards, Fred
I have a 603 and need to fix the woofer and the surround has turned from rubber to a hard plastic in spots. Is there a solvent that has been found to soften the plastic in order to remove it?
Good evening, thanks for your reply. Actually, I have not used strong liquids such as thinner, more or less for fear of damaging the cone. The old surround on the cone is still quite strong. The old surround has suffered less from all kinds of influences in this place (just on the cone). You could try with a stronger liquid, of course at your own risk. Sincerely, Fred
Surrounds (and glue, brush, etc.) can be bought at www.repairyourspeakers.com/en/foam-rubber-surrounds/bowers-wilkins/g-10000066 (PayPal, credit card, Sofort, etc. ).(EN/DE/NL)
Thank you for this helpful video. I have a 601 & 602 series and here in our place it is so dry & I'm worried that the rubber surround will get brittle over time or lost it's flexibility. Could you recommend any cream that can be applied on the rubber surround to keep its flexibility & avoid cracks? HAND ☺
Good morning, thanks for the reply and sorry for my later reaction. Somehow there has gone something wrong. Some people say that for instance silicone spray / liquid will help. But actually I've tried a lot, and all didn't solve the problem, sorry. With best regards, Fred
i lived in the deserts and very dry here and have been playing and suing my 602 for 18-20 years 10 hours a day , i run a business and have yet have any problems with the rubber surround , just when you really have to touch the surround make sure to not leave any hand oils .
Попробуйте глицерином
Thanks for this video! Do you know how to fix the dent in the center cone? I have this exact problem on my CM4. Thank you!
Good morning, and a very good 2021! Actually the center cone is from very hard plastic material. By the way, we have the right surrounds for these beautiful CM4 speakers: www.repairyourspeakers.com/en/foam-surrounds/bowers-wilkins/bowers-wilkins-cm2-cm4-cm6-rubber-surround-repair/a-2393-10000066. Maybe it's an option for the dent in the center cone to use this video: ruclips.net/video/fP2u0FCqNy0/видео.html. Ofcourse at own risk. With best regards, Fred
I had this issue for 2 speakers, I used a breast milk pump. It worked depending on the severity of how much it was dented. HTH ☺
Try popping out the dent with a tacky adhesive tape. Apply on and slowly pull up, repeat. It works.
hello would i need a spare part for my bowers & wilkins dm-602 s3 do you have the one for sale? thanks greetings
Good morning,
Sorry I have no complete speakers on stock, only the surrounds (and accessories): www.repairyourspeakers.com/en/foam-surrounds/bowes-wilkins/bowers-wilkins-sorrento-1-x-rubber-surround-for-7-inch/a-2244-10000066
Best regards, Fred
Hoi Fred, heb je ook nog geheimtips om een deuk uit dustcaps te krijgen, zonder ze gelijk te vervangen? Ik zie er bij deze speaker ook eentje zitten, en kom t nogal eens tegen.
Hallo Tom, dat is afhankelijk van het materiaal van de dustcap en ook hoe lang de dustcap reeds gedeukt is. Bijvoorbeeld bij papieren/kartonnen dustcaps is dit vaak geen probleem, maar bij kunststof dustcaps wel. Als je een mailtje stuurt naar info@audiofriends.nl kan ik je wellicht verder helpen. Sowieso wil ik een goede video maken om dustcaps weer onbeschadigd te krijgen (afhankelijk van het materiaal en mate van schade).
Its uv light that kills them, i have the sorrentos with the grey surrounds i leave the grills off usually, one speaker faces a window the other doesnt, the window facing one started rattling at low frequencys when i investigated it the surround has lost all softness and suppleness and the kevlar has turned orange the other speaker not facing the window looks like brand new soft rubber light yellow kevlar
The black surrounds dont suit the sorrentos please make grey available
🙏
Good morning,
Thanks for your reply and information. Actually why we didn’t choose grey again for the surround, is that the black rubber of our surrounds has proven to be very reliable. We choose for proven quality of the material instead of in this case the grey coloured material, where we don’t have long experience with. Also, I look to the future, the (original) grey surrounds got already after some years more inflexible as when you bought the speakers at a shop. So, the parameter will change already after some years. With the rubber black surrounds you won’t have this problem.
Best regards, Fred
Nice job 👍, do you have also a solution for dust cap damaged ?
Perhaps add a few more specifics, I.e. are you talking about the same speaker, I.e. CM2, 4 or 6, Phase plug style dust cap as pictured?, and what sort of damage?, all the best with solution
Dust cap for DM602 S3, perforated dust cap,
one of the speakers stop functioning. cheaper to replace the parts or better off buying 2nd hand speaker to replace the non functioning speaker?
Good morning, sorry for my late reply. There are shops who can repair not working speakers. With a woofer (I guess you mean one woofer unit) first aid is to look behind the woofer at the wire from the terminal to the back of the cone. Because woofers makes large movements, it could be well possible a wire makes right there a bad contact. Simple is to have some power on the woofer and gently touch the wires (for instance with the back of a tooth brush) in different ways, if you can make the wire make a short contact. If so, be careful to repair, or send the speaker to a repair shop who can make the speaker work again like it should be. Best regards, Fred.
Hi, Do I have to remove also the papery thing from the metal rim of the speaker ? (the white stuff) ?
Good morning,
Thanks for your message. The white high density paper rim on the frame has not to be removed. It’s the rim between the mounting of the outer edge of the rubber surround on the frame. Next could be: why? There are different options. I think at least it's part of the design of this Bowers & Wilkens speaker.
It may have been used to dampen the resulting resonances of the cone at the outer edge. If it is expected that there will be a relatively large production of certain speakers, manufactures still want to fine-tune them, especially if this can be done in a relatively simple way. That could be possible, I have also seen it with other manufacturers. Best regards, Fred.
@@audiofriends254 Unfortunately I have removed it all, both the papery thing and the sort of silicone ring on top of it. What would you recommend to use in order to restore it?
Good morning, in my opinion it's for humans not hear able if the white thin paper ring in this case is removed or not. The ring is very thin, not as thick as for instance an 11 inch woofer from Acoustic Research. Further, if you might use it, our SP6 glue is very strong, also on for instance metal. We have tested the glue on different surfaces: www.repairyourspeakers.com/en/glue-brush-fluid/c-3. Also if you use other strong glue to mount the surround, I'm quite sure it has no hear able effect. The rubber surrounds are well designed and will give you the sound you want. Best regards, Fred
Critical comments or questions are welcome!
Good morning! I am try found ruber foam for my P5 b&w speakers. I want to replace the old one. Help me please ..
Good afternoon, thanks for your reply. Beautiful speakers! Best is to look at our webshop www.audiofriends.com, or send us an e-mail at info@audiofriends.nl. Best regards, Fred
@@audiofriends254Thank you ! I will write there.I try summit at your webshop but i cant. Greece not apeare at the summit form you have..
@@PADYGR Good morning, if correct you can now order at our webshop www.audiofriends.com, we have added Greece. Best regards, Fred
Does this fix the speaker rattling on bass songs is this common on these woofers?
Good morning,
If the cone is going to sag due to gravity, it is possible that the voice coil will make a scratchy sound at low tones. For example, the KEF B200 SP1039 is known for that. The Bowers & Wilkens Sorrento series is more known for a hardened and less flexible surrounds.
Best regards, Fred
@@audiofriends254 Hello: Is there a way to prevent this on the surround of B&W 601/2 series? Any cream that can be applied to prevent this & keep it flexible? THANK YOU ☺
@@simhapis8506 Good afternoon, actually I haven't. There are manufacturers who did made surrounds witch became inflexible after a while. The rubber surrounds here shown have to be able to last longer. I've seen no liquid or something to prevent rubber surrounds from drying. With best regards, Fred
@@simhapis8506 Good afternoon, actually I haven't. There are manufacturers who did made surrounds witch became inflexible after a while. The rubber surrounds here shown have to be able to last longer. I've seen no liquid or something to prevent rubber surrounds from drying. With best regards, Fred
Hoi, sta op het punt om deze rubber randen te bestellen. Is de procedure met de aluminium woofers hetzelfde ?
Goedemorgen, merci voor uw reactie. De procedure is in principe hetzelfde, wel met de nadruk extra voorzichtig te zijn met het verwijderen van de oude rand op de conus. Ik heb voor u een voorbeeld van een stel Bowers & Wilkens DM604 speakers geplaats op de volgende link: www.refoam.info/B+W-DM602+DM604.jpg. Met vriendelijke groet, Fred
Goedemorgen, merci voor uw reactie. Wat betreft het centreren van de conus zou het ook kunnen met bijvoorbeeld testsignalen. Op RUclips zijn er diverse video's te zien. Wel wordt er vaak gebruik gemaakt van een mobiele telefoon als testgenerator. Helaas, tegenwoordig worden mobiele telefoons vaak geleverd zonder een 3,5 jack-plug aansluiting (van origine gebruikt voor een hoofdtelefoon). Eventueel zou u dan een 35 Hertz signaal kunnen gebruiken op de volgende link: www.refoam.info/testsignals. Let wel, het zijn korte testsignalen. We zullen een langer testsignaal maken. Wel is het vaak mogelijk met een cd-speler het testsignaal automatisch oneindig te laten herhalen (repeat A - B) waarbij een soortgelijk effect ontstaat. Met vriendelijke groet, Fred
Do you make surrounds for the lcr600s3? I didn't see it on your site.
Good evening, thanks for your reply. Sorry for the late reply, it has been very busy at Audiofriends in recent months. Actually we have sold, if I'm right, this surround not yet. If you send an e-mail to info@audiofriends.nl I like to give you a good deal. Best regards, Fred
@@audiofriends254 did this "good deal" ever materialize ? I don't see rubbers for LCR600 on your website ?
@@atariandre5014 Good evening, thanks for your reply. We have bought a second hand speaker unit of the B&W LCR600s3 (If you want I can make a little video on a hyperlink, if you want that, please tell me what you like to see.). The surrounds of the speaker units of the B&W LCR600s3 (See Google, I can’t find a LCR600s3 with problems with surrounds.), seems to be from a thinner maybe other material. I actually don’t know, but fact is that the speaker unit here does work okay. And I think it’s not handy to repair a good working speaker. With best regards, Fred
@@audiofriends254 it's funny you should say that Fred, as I had just checked all the surrounds by feeling and pushing a bit, and I noticed that of all my speakers the LCR600 indeed have very soft and flexible feeling rubbers. So, I fully agree, don't fix what is not broken...and saves a bit of money too :)
Will order for my 603's and 601's and some ferro fluid etc. soon.
Good afternoon,
Some new information: A woofer from the LCR600S3 has been purchased here for a while now. It seems that the grey surround of the LCR600S3 remains good. I can't seem to find this centre speaker anywhere on Google with a problem at the surrounds. It is possible, that sometimes happens at large companies such as JBL, that the parts for a series of speakers are purchased from different manufacturers. Especially if the order is big in a short time. I'm not sure if this is the case at B&W, but it was at JBL. The result could be with B&W that the material of the LCR600S3 is of different material. In any case, it seems that the surrounds of the LCR600S3 are thinner than those of the larger speaker units. I just made a raw simple video:
www.refoam.info/lcr600s3.mp4
With best regards, Fred
What price please to refoam Bower's and Wilkins DM 603 S3...A Pair.....🧐
Top and bottom.
Good afternoon,
We have for instance the following offer: www.repairyourspeakers.com/en/foam-surrounds/bowes-wilkins/bowers-wilkins-dm603s3-6-x-rubber-surrounds-6-5inch/a-2388-10000066. The SP6 glue we sell is on our webshop also not expensive. You can pay by PayPal, credit card, Sofort, etc. Also available on eBay (more expensive.)
Best regards, Fred
Great video, but needs a voice over.
Good morning, Indeed, your right. It was one of the first videos we made (see: ruclips.net/channel/UCM6jfAdxStMNYpGVZWrDizQvideos ), and we tried to make the video international without language. That was not such a good idea, there should have been a English voice-over. After years it's not possible to change it, even a fitting background music seems to be not possible for this video. Profit is that you can listen to you own music. Further, then, we thought (at least I did) that a voice-over at much places can't be heard, like everywhere in public, where you do have time to watch the video, but sounds is not real handy. Though thanks for the tip. Best regards, Fred
Hi! Im Brazilian! I need buy 4 pieces of Rubber Surrounds (7inch) to my B&W 602-S3 and 4 pieces to my LCR60-S3. Can you sold-me or tell-me where I can buy? Thanks
Good morning,
It should be possible, but the shipment shall be high (registered letter-box 16,95 Euro - PostNL), you can buy the VAT-free, but you will have to pay the customs in Brazil. And we don't know how much that will be...
Best regards, Fred
Hi! @@audiofriends254 !! Thanks for answer me! I'm looking for in so many places! Amazon, some stores in USA.... "picclick.com"... and nothing!!! I have a friend living in USA... Can I buy to send to him?
how do I know if my twitter on my CM Center channel is working
Good morning, on www.audiofriends.nl/archief/testsignalen/ we have a lot of test signals. I would choose the version ‘L’ from 1000 - 20000 Hz. Note to be very careful with test signals, and don’t play louder if you hear nothing. You can also choose the 20 - 20000 Hz. Watch your woofer/midrange that they don’t get overloaded with too much power. Best regards, Fred
Hi, I have a b&w subwoofer and the ruber foam is coming apart,what kind of glue I can use to fix it.
Good afternoon,
I assume the surround is from rubber. Our SG6 glue should be strong enough after 24 hours. It's than very important to let the glue first dry a bit in the air without contact, before mounting. Like for instance in this video. If you send an e-mail to info@audiofriends.nl and send your address we can send you free of charge a bottle of glue and a brush.
Best regards, Fred
I can only find the black I need the Grey ones
Good morning, thanks for your reply. Sorry for my late reply. I can understand you want the colour to be grey again. Question is, if you will take the risk that possible the new grey surround will get in problems again. Best regards, Fred
2 things I would like to mention :
1. If the speaker originally came with foam surrounds then it should be replaced with foam not rubber, as this might affect the sound since the specifications of that speaker is as per foam. The rubber has a different effect, damping, stiffness, etc. All these parameters could greatly affect the sound.
2. A foam surround usually provides better sound when compared to rubber, which is why most quality subwoofer have foam surrounds as opposed to rubber. The downside of foam is that it is often subject to dry rot, etc and is not as durable as rubber.
Maybe first learn about what you are talking about. These B&W have rubber from the factory.
@@atariandre5014 maybe first read what I wrote, then respond. I specifically mentioned IF they come with a particular material I.e rubber or foam they should ideally be replaced with that. I never assumed that.
@MAD GRUMPYMAN That is your opinion or rather assumption. Many beg to differ.
@@zzz8428 which renders your comment useless and more important: confusing for people who own these speakers.
To be absolutely clear: the B&W 600 series have rubber surrounds from the factory and thus should be re-equipped with rubber surrounds.
This is definitely not the way to replace speaker suspension foam. Don't do this way if you value your speakers. The Centre dust cover dome must be removed and shims placed around the coils to keep them central, then glue the foams, let them set and remove the shims and replace the dust cover domes. These are nice speakers. Worth the effort to do it properly. DIY speaker repair at its worst.
Good evening, thanks for your reply. Well, certain in this case the solid dust cap a kind of way can’t be removed, unless you want to destroy the complete speaker. That is also the case with for instance Dynaudio an other speakers: www.repairyourspeakers.com/en/video-manuals-for-repair/foam-or-rubber-surrounds/c-27. The value after destroying the irreplaceable dustcap will be I think that low, that the trash bin will be the only solution..
For the enthousiasts it’s possible to use indeed shims at other speakers. On our website we indeed refer to people from who we think have done this option right. Back to the dustcap. The dustcap is not only to avoid dust. It has a function in the sound the speaker produces: www.repairyourspeakers.com/en/frequenty-asked-questions/15-more-about-the-dustcap-story/c-45.
So we think that if shimming is necessary, the same dustcap should be used. The best shimming we found on RUclips: ruclips.net/video/7A8M8HdngS0/видео.html.
With best regards, Fred
@@audiofriends254 I understand the difficulty with the centre cones, but to replace the suspension without centering and positioning the coils is a bit reckless IMO. Perhaps at least devise a method of supporting the cone against the speaker frame, thereby fixing its position whilst the old suspension is still attached, then glue the new in place then remove the supports. At the very least warn people of the dire consequences for the driver that can occur following this method.
@@user-eg7lc1xx5w Good evening, thanks for your reply.
First, I would like to refer to the following link: ruclips.net/video/Pw7A7g05tA8/видео.html. It is actually a basis of what the customer wants: either a surround that fits slightly smaller within the frame, or a surround that fits exactly inside the frame just like the original. We first had the 8”VF which did not fall exactly within the frame by a small distance, but could therefore be centered in any way. You already understand: complaints, that the surround did not fit exactly like the original. (We now have the original/genuine surround for this speaker: www.repairyourspeakers.com/en/foam-surrounds/vifa/vifa-m21wg-woofer-1x-genuine-foam-surround-for-repair/a-3026 -10000025).
Well to return to the previous story, the customers want the surrounds to fit exactly in the frame. If you purchase an original surround, this will often be the case. This is certainly the case with the B&W speakers mentioned.
Furthermore, the importance of centering depends on the type. If 7-inch speakers in the B&W compare to, for example, an Acoustic Research AR3a with a very flexible spider plus heavy cone, then there is clearly a difference. In a closed cabinet, the mechanical resistance must be small, the air plug must absorb it. This is because a resistance of an air plug is more linear than a purely mechanical one.
The B&W speakers mentioned are speakers with a powerful magnet and a sturdy centering ring. Furthermore, the outer edge on the cone is clearly visible. Then it is also easy to place the new surround right here. In my video I left some particles, and I don't have used a Dremel (us.dremel.com/en/products/-/show-product/tools/dremel-2050-15-stylo-versatile-craft- tool) is used. This is because the outside of the gray surround is hardened. The residues on the cone are like new, and are also airtight sealed by gluing the new glue over it.
Because our (rubber, basically indestructible) surround is as original (www.repairyourspeakers.com/en/foam-surrounds/bowers-wilkins/bw-dm602-dm604-dm605s3-1x-100-rubber-surround /a-2253-10000066), in size and shape, minute alignment is absolutely not necessary. This B&W speaker also has a fairly large clearance between the pole core and the top pole plate, unlike, for example, Dynaudio. The revised speaker in question meets all conditions, technically and visually. So no reason to apologize, sorry.
With best regards, Fred
@@audiofriends254 that clearly answers my question about the centering of the coil. Thanks !
I did it this way using supplied foam and instructions.
It worked perfectly. You have time to zero-in the centreing as the glue dries very slowly.
I'm no expert and I found it an easy process. It saved a pair of old Mission 762s from getting binned.
They're currently singing, 12 hours a day in my mate's house.
Not a good way to do it. B&W shoudl fix under warranty.
Indeed, Bowers and Wilkins has to my opinion something to do with a kind of warranty or leniency. But the Sorrento series are about 20 years old...
After 20 years ???