I'm ignorant - is there another term for "pure white" shellac? -some searches bring up opaque white stuff
Planet10 - did your Nirvana Super 8 get the Enabl treatment yet?

Planet10 - did your Nirvana Super 8 get the Enabl treatment yet?
Treating a whole paper based cone at once with water based stuff seems like a no no. Lacquer maybe ok. But then I don't really know nothin.
Planet10 - did your Nirvana Super 8 get the Enabl treatment yet?
Not mine. They were a disapointment before, got better after, but were stillless than satisfactory. The 2 of them were also very far from being a pair parameter-wize as well.

dave
I'm ignorant - is there another term for "pure white" shellac? -some searches bring up opaque white stuff
Not that I'm aware of, just that it's available in different colors with orange being what I normally see/use. IIRC, white shellac has had any bug wax removed, but when I tried to google some info to confirm, all I got was nail polish info.
GM
Could kill millions of brain cells if not properly ventilated. Not stiff, very flexible coating.I wonder if a de-whizzered BG20 would benefit from having an inner diameter say 1.25"->1.5" treated with airplane dope - ? - be a gamble
this looks like enough to ruin many speakers
An externally hosted image should be here but it was not working when we last tested it.
Minwax Polycrylic is a bit thin, but works well. Have used to apply 0.5-0.7oz/yd glass cloth to foam wings cores and fuselage. Sometimes apply various coatings with an airbrush. Masking and stenciling where needed. Interested in surface treatment only, eg thin film coatings
Glitter hairspray is available at Spencers and Party City 😛
Non stiff coating will damp or eve ruin the driver.
Shellac gives a hard coating, which will/should improve slightly dead cones. Paper cones only!!.
White shellac must be in Crystal form...not a paint makers bottle for furniture!
Artists materials specialist firms such as Cornelliasen (Check spelling on google) sell only the finest. Ask them re. a liquid to thin. It's turps but I cant remember whether raw or distilled. Again finest artists quality please.
Shellac gives a hard coating, which will/should improve slightly dead cones. Paper cones only!!.
White shellac must be in Crystal form...not a paint makers bottle for furniture!
Artists materials specialist firms such as Cornelliasen (Check spelling on google) sell only the finest. Ask them re. a liquid to thin. It's turps but I cant remember whether raw or distilled. Again finest artists quality please.
I used to use shellac alot with decoupage and I think it's meths to thin it. can it be sprayed? its quite sticky stuff
I used to spray gun shellac on woodshop projects thinned with methanol. I think ethyl alcohol works too. You can really control a thin light coat with a good air brush and thinner.
thats interesting. I'll mix a powder into the shellac and hopefully it will dissipate and still be ok to spray. Do those little hand held artist sprays work ok?
I'm ignorant - is there another term for "pure white" shellac? -some searches bring up opaque white stuff
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Planet10 - did your Nirvana Super 8 get the Enabl treatment yet?
I think it probably is bleached shellac.
Shellac comes in several different grades. Blonde, bleached, ruby, orange, lemon, dewaxed, decolorized by activated coal, buttonlac, seedlac, sticklac, to name a few.
thats interesting. I'll mix a powder into the shellac and hopefully it will dissipate and still be ok to spray. Do those little hand held artist sprays work ok?
Depends on how thick it is, how much air pressure is required and how much pattern control you desire. I have accumulated a box full of various brand, model airbrushes to paint everything from pencil thin lines with the finest inks at very low pressure to detailing motorcycle helmets/whatever with automotive paints, but for base coatings where pattern control isn't a high priority, a relatively dirt cheap Badger kit is sufficient for most paints if enough air cfm, psi is available, so a lot depends on the air supply. If using a larger touch up gun, then spraying through a template is advised.
GM
Looks like Troels may have found a simpler way to deal with smoothing response, using glue at the inner edge of the surround, as explained in his latest piece...
By adding a proper amount of glue with proper elasticity and resilience* and in the right place on the inner side of the surround, the energy coming from the cone can better be absorbed and the result is a more linear frequency response - and hopefully, more fidelity.
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… using glue at the inner edge of the surround…
Nice to see the article, thanx.
A trick Bud figured out a decade ago. All my Fostex get treated that way.
dave
Looks like Troels may have found a simpler way to deal with smoothing response, using glue at the inner edge of the surround, as explained in his latest piece...
*The source of material and application technique shall not be revealed, so please do not ask.
Yeah, probably to fend off knuckleheads who damage their drivers (and then blame him for it).....I suppose if you are motivated and "smart" enough you can figure it out/experiment for yourself, but doesn't really save you any time.
nothing wrong with Dammar , on my side of pond - Kohinoor brand
done numerous drivers with it , from ancient ellipses from old radios, cheap and expensive FRs to Tannoys and my precious RCA LC1B
one or two coats , depending how much cones are tired
done numerous drivers with it , from ancient ellipses from old radios, cheap and expensive FRs to Tannoys and my precious RCA LC1B
one or two coats , depending how much cones are tired
I think more benefits could be had trying the Scanspeak 'slit' method as documented here. But that's a lot to ask of anyone with a $$$ woofer.
I had a similar experiment here on a PA130-8.
The Daytonator - PA130-8X

Mixed results but in the end, the driver sounded great when turned into a DIY coaxial.


Hello,
description of how it is done - you can find here:
https://www.diyaudio.com/forums/pa-systems/375464-tuning-tweaking-bp-115-a.html#post6745386
Aluminium foil on an 15 inch paper bass driver
description of how it is done - you can find here:
https://www.diyaudio.com/forums/pa-systems/375464-tuning-tweaking-bp-115-a.html#post6745386
Aluminium foil on an 15 inch paper bass driver
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Hi Freedom666
was your blog with the gold foil version an Eminence Beta12cx ? -
I like the idea of foam weatherstripping applied to a driver's surround
Would something like what's called Aileen's Tacky Glue be more favorable
for foil than Elmers white glue?
Is thin foil preferable to heavy kitchen foil ?
was your blog with the gold foil version an Eminence Beta12cx ? -
I like the idea of foam weatherstripping applied to a driver's surround
Would something like what's called Aileen's Tacky Glue be more favorable
for foil than Elmers white glue?
Is thin foil preferable to heavy kitchen foil ?
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