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Cone Paint?

74.160.0.137
Posted on November 5, 2009 at 18:18:54
Maniac
Audiophile

Posts: 1026
Location: Atlanta
Joined: October 22, 2005
 I am trying to put together a modest office system and have found a pair of spendor prelude at a local audio repair shop. The surrounds have been rebuilt but i noticed that the cones had a heavy thick paint on them. I heard them and they sounded pretty good but was wondering if this is a common practice.

RE: Cone Paint? Do Beldar & Primat approve? nt, posted on November 7, 2009 at 08:15:00
gentlegiantfan
Audiophile

Posts: 749
Location: central florida
Joined: November 25, 2002
 .

RE: Cone Paint?, posted on November 6, 2009 at 20:26:33
hahax@verizon.net
Audiophile

Posts: 815
Location: New Jersey
Joined: March 22, 2006
 The Prelude used bextrene plastic cones. Bextrene was actually fairly resonant so almost every manufacturer used a clear damping coat of PVA(poly vinyl acetate). PVA is also sometimes used on other cones for the same purpose even when it's not as necessary. It's been used on some paper cones and also polypropolene cones even though thet were inherently better damped.

By the way, you're correct. The Prelude was an attempt by Spendor to build a less costly speaker than the classic BC1 that was their main product for years and it was a very nice speaker that kept most of the virtues of the BC1. As I recall it's bass was better damped, the biggest weakness of the BC1.

RE: Cone Paint?, posted on November 5, 2009 at 21:59:09
Coner
Industry Professional

Posts: 828
Joined: November 17, 2001
 No, that's unusual. Unless it's OEM, Bad idea to apply
heavy paint to a cone. Sometimes done to stiffen cone,
waterproofing or add mass.

If I come across a faded looking PA
woofer cone, I use vinyl upholstery spray paint
(black].

It's a thin coating and the cone looks like new.
30" is a woofer size (EV 30W)
RE: Cone Paint?, posted on November 6, 2009 at 01:11:32
djk
Manufacturer

Posts: 3886
Joined: June 17, 2000

Kiwi black shoe dye works better on cones than any spray product.

RE: Cone Paint?, posted on November 6, 2009 at 09:27:05
Coner
Industry Professional

Posts: 828
Joined: November 17, 2001
 Good idea. The vinyl spray seems like a dye product, does
not look like paint on the cone.
30" is a woofer size (EV 30W)
RE: Cone Paint?, posted on November 7, 2009 at 00:41:24
djk
Manufacturer

Posts: 3886
Joined: June 17, 2000
 You're probably right about the vinyl spray being a dye, I think the sponge applicator on the Kiwi dye is easer to control (no masking or overspray).

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