no sticky dope on the older drivers
leftwinger57
Posts: 2,917
I did do a search 1st but really no answer to this. Mark Hardy alluded to that the much older Polks did not use sticky dope on their speakers. My '78 M7s have no such dope w/ the exception of the new one I got from Polk. The question is does one dope these older speakers or leave well enough alone. I used to be a modeler and built balsa wood planes w/ tissue paper wings and other parts and used what was then called well, clear modeler's dope which stiffened the paper and then allowed you to paint the the plane. Would this work or just not worth the effort. OH, that stuff got you wasted if not used in a well ventilated room.. Lost some brain cells along the way because I built hundreds of models.
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Comments
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Id leave it be. If it eats at ya-replace the other with a new one also & then they will match.... I would be more worried about ' what adding to the original driver might effect its purpose. Put the grills on & if they sound correct-call it a day & enjoy them..
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I replaced the the woofers on my speakers, I find the sticky dope on new drivers pretty anoing. It collects dust and particles that are impossible to clean... I am thinking in finding a good vintage pair and replace it back.Post edited by cortico on
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I hate the fact its harder to light it up when its sticky
smile: .. -
I replaced the the woofers on my speakers, I find the sticky dope on new drivers pretty anoing. It collects dust and particles that are impossible to clean... I am thinking in finding a good vintage pair and replace it back.
The replacement drivers I've ordered from Polk, do not have the tacky surface. The coating they applied was textured and dry to the touch.
The older drivers are easily cleaned with Windex. If done properly, with a lint-free micro-fiber cloth, they come out perfect.Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
Thus the phrase in our society--going out of style about the time that mass interest in building model planes did--of "dope fiends".leftwinger57 wrote: »used what was then called well, clear modeler's dope which stiffened the paper and then allowed you to paint the the plane. Would this work or just not worth the effort. OH, that stuff got you wasted if not used in a well ventilated room.. Lost some brain cells along the way because I built hundreds of models.
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westmassguy wrote: »I replaced the the woofers on my speakers, I find the sticky dope on new drivers pretty anoing. It collects dust and particles that are impossible to clean... I am thinking in finding a good vintage pair and replace it back.
The replacement drivers I've ordered from Polk, do not have the tacky surface. The coating they applied was textured and dry to the touch.
The older drivers are easily cleaned with Windex. If done properly, with a lint-free micro-fiber cloth, they come out perfect.
Interesting, I got the my Polk replacement drivers from Midwest speakers and that batch is super tacky, it almost looks that is not cured. Also gets finger print marker when touched... I am very unhappy with the drivers.
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The originals are like that, not the new replacements from Polk.westmassguy wrote: »I replaced the the woofers on my speakers, I find the sticky dope on new drivers pretty anoing. It collects dust and particles that are impossible to clean... I am thinking in finding a good vintage pair and replace it back.
The replacement drivers I've ordered from Polk, do not have the tacky surface. The coating they applied was textured and dry to the touch.
The older drivers are easily cleaned with Windex. If done properly, with a lint-free micro-fiber cloth, they come out perfect.
Interesting, I got the my Polk replacement drivers from Midwest speakers and that batch is super tacky, it almost looks that is not cured. Also gets finger print marker when touched... I am very unhappy with the drivers.
Did you really pay $60.00 for them?Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
The coating on the mid/late 1970s Polk woofers is nothing like the Allison woofers of the 1970s in terms of stickiness & general tediousness to deal with (FWIW) :- )
Any of you who've rehabbed early Allison loudspeakers knows whereof I speak.
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westmassguy wrote: »
The originals are like that, not the new replacements from Polk.westmassguy wrote: »I replaced the the woofers on my speakers, I find the sticky dope on new drivers pretty anoing. It collects dust and particles that are impossible to clean... I am thinking in finding a good vintage pair and replace it back.
The replacement drivers I've ordered from Polk, do not have the tacky surface. The coating they applied was textured and dry to the touch.
The older drivers are easily cleaned with Windex. If done properly, with a lint-free micro-fiber cloth, they come out perfect.
Interesting, I got the my Polk replacement drivers from Midwest speakers and that batch is super tacky, it almost looks that is not cured. Also gets finger print marker when touched... I am very unhappy with the drivers.
Did you really pay $60.00 for them?
It was a bit less, I will take a few pictures when I have a chance. The drivers have a stoker with Polk logo, I believe the assembly year is 2013. -
It collects dust and particles that are impossible to clean
Are you using the grill covers?Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
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It looks like there's something on the surround. Is it sticky as well?
Why didn't you buy the drivers from Polk?Political Correctness'.........defined
"A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."
President of Club Polk -
It looks like Midwest sprayed something on them, even the surrounds.It looks like there's something on the surround. Is it sticky as well?
Why didn't you buy the drivers from Polk?
Home Theater/2 Channel:
Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
dhsspeakerservice.com/ -
I should have got them from polk, but I wanted to use a paypal promotion i had. I have fixed the video link. The surrounds are not sticky, its just the cone.
Sorry leftwinger57, for thanking over your thread. -
No coating on the rubber surrounds of the 7As here (FWIW).
Polkmonitor7Asn4900 by Mark Hardy, on Flickr
PS the grey cast that the surrounds seem to exhibit in the photo aren't (at least entirely) a photographic artifact; they've always looked like that -- but they feel like rubber (no coating nor residue obvious to the touch).
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Leave the grill covers on and they won't get dusty.
When I first came on this board there was a discussion about this, so I got worried and took off the covers to clean them. Despite being 14 years old at the time, they were as clean as could be. That is why the grill covers stay in place. Marantz AV-7705 PrePro, Classé 5 channel 200wpc Amp, Oppo 103 BluRay, Rotel RCD-1072 CDP, Sony XBR-49X800E TV, Polk S60 Main Speakers, Polk ES30 Center Channel, Polk S15 Surround Speakers SVS SB12-NSD x2
http://youtu.be/dirmKVI7PBs
