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Old 21st September 2017, 05:36 AM   #1
irishpatrick33 is offline irishpatrick33  United States
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Default Paper Cone Treatments

I am wondering if somebody could give me some advice. I am modifying some 2 3/4" full range drivers; I have them and want to do something with them, but they need improvement. I'm installing phase plugs. I am also curious about stiffening and dampening via application of solutions. My drivers aren't bright, perhaps boomy and sluggish. Any thoughts? By the way, I do not have the ability to measure things or do any professional diagnostics.
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Old 21st September 2017, 05:53 AM   #2
planet10 is offline planet10  Canada
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Paper Cone Treatments
Pictures?

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Old 21st September 2017, 09:33 AM   #3
ghemml is offline ghemml  Singapore
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I use Yamato Nori starch glue to harden my paper. I apply a thin layer, dry it with hairdryer and apply one more layer.

Ideal method of applying to prevent too much water content from the starch glue from entering the paper which causes warping.

Yamato Nori (Starch Paste Tube Type) YAMATO CO.,LTD.

Last edited by ghemml; 21st September 2017 at 09:38 AM.
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Old 21st September 2017, 12:22 PM   #4
ghemml is offline ghemml  Singapore
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Sorry my application is referring to the cone, not enclosure. Misunderstood while trying to read from mobile
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Old 21st September 2017, 04:51 PM   #5
chrisb is offline chrisb
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I think you want to be careful with too much stiffening of a paper cone FR. To a great degree, the wider bandwidth performance is based on "break-up", and while strategic location of mass / stiffening or damping materials can mitigate some extreme resonances, it's probably easier than you to go too far. It might not be the cone, so much as the junction at surround / frame that could use some treatment.
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Old 22nd September 2017, 04:30 AM   #6
irishpatrick33 is offline irishpatrick33  United States
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Thanks for the responses to a thread that was misspelled.

Now for the information I was hiding... the drivers are from a Bose Wave Radio. Sorry. I got 2 of these for free and would like to see if I can improve upon it.

If anybody is still there, the radio employs two different drivers. One full ranger which employs the wave guide and one that handles mostly high and mid frequencies.
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Old 22nd September 2017, 05:07 AM   #7
planet10 is offline planet10  Canada
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Paper Cone Treatments
Speaker Tweeks -- Puzzlecoat & Ductseal

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Old 22nd September 2017, 06:27 AM   #8
irishpatrick33 is offline irishpatrick33  United States
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I am doing the duct seal. So you think I would benefit from doing puzzle coat to the entire cone on these drivers in this application?
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Old 22nd September 2017, 06:29 AM   #9
planet10 is offline planet10  Canada
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Paper Cone Treatments
I have had positive improvements on all the paper cones i have treated. Don’t add too much. As thin a coat as you can. And be careful how much you dilute it. Too much and you can warp the cone.

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Old 23rd September 2017, 08:32 PM   #10
freddi is offline freddi  United States
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hi ghemml - do you dilute the paste? Paint the entire cone?
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