Damping a drivers frame with putty or similar

Bill poster · 03:49 PM

If I use grip fill or some form of putty (maybe one that doesnt set) to damp the frame of a driver, what are the benefits and are there any drawbacks? Will it lower the Fs?

Ron E · 22nd April 2011, 10:15 PM

Quote:

Originally Posted by Bill poster

If I use grip fill or some form of putty (maybe one that doesnt set) to damp the frame of a driver, what are the benefits and are there any drawbacks? Will it lower the Fs?

benefits:
damps potential ringing
Drawbacks:
could fall off or loosen over time
if solvent based could affect driver glues or materials

It won't change parameters much, if at all, unless you significantly reduce open area.

dewardh · 23rd April 2011, 12:24 AM

Pretty much pointless. Just magnet mount the driver . . . then the only load on the frame is the almost trivial force from the surround.

Bill poster · 12:45 AM

Quote:

Originally Posted by Ron E

benefits:
damps potential ringing
Drawbacks:
could fall off or loosen over time
if solvent based could affect driver glues or materials

It won't change parameters much, if at all, unless you significantly reduce open area.

http://www.bostik.co.uk/diy/product/...lvent-Free/143

In the UK we have Grip Fill, which is a pretty cool product. Its very versatile and can be used to glue/ fill/ seal anything. It doesnt fall off or fall out EVER even after yrs and the yellow tube type is a kind of 'eco' version, so it shouldnt damage plastics or react with other materials. I might give it a try..

Altec Best · 23rd April 2011, 01:59 AM

Absolutelately waste of time "Not Necessary" IMHO

Ron E · 23rd April 2011, 02:20 AM

Quote:

Originally Posted by Bill poster

Evo-stik Gripfill Solvent Free - High performance, general purpose, solvent free gap filling adhesive

In the UK we have Grip Fill, which is a pretty cool product. Its very versatile and can be used to glue/ fill/ seal anything. It doesnt fall off or fall out EVER even after yrs and the yellow tube type is a kind of 'eco' version, so it shouldnt damage plastics or react with other materials. I might give it a try..

I have heard of using:
http://www.amazon.com/Gardner-Bender.../dp/B000BO8XD6
or:
Plasticine - Wikipedia, the free encyclopedia

TerryO · 03:31 AM

What I, and many others use, is Duct Seal putty, or if you can't find it, Oil-Based Modeling Clay. Neither one will ever harden, can be reused or removed, and isn't very expensive.
However, it will not lower the Fs of your driver.

[Edit: I see that Ron E has provided a link in the previous posting.]

Best Regards,
TerryO

DJNUBZ · 23rd April 2011, 04:56 AM

Dynamat extreme or Roadkill work well for this application. Makes a bigger difference on stamped basket drivers then cast basket. Making a thicker baffle to mount to would be a much more productive way of dampening vibrations.

planet10 · 23rd April 2011, 05:26 AM

Don't forget the role something like ductseal can have in improving the aerodynamics of the back of the driver (and thus reduce the bleedthru of time smeared signal getting out thru the cone).

dave

dantheman · 23rd April 2011, 05:55 AM

Dave, can you post your pics of these modifications you've made. I can't seem to find them here.

Thanks,

Dan

22nd April 2011, 03:46 PM	#1
Bill poster diyAudio Member Join Date: Jun 2008 Location: London	Damping a drivers frame with putty or similar If I use grip fill or some form of putty (maybe one that doesnt set) to damp the frame of a driver, what are the benefits and are there any drawbacks? Will it lower the Fs? Last edited by Bill poster; 22nd April 2011 at 03:49 PM.

23rd April 2011, 01:59 AM	#5
Altec Best diyAudio Member Join Date: Mar 2010 Location: Central New Jersey	Absolutelately waste of time "Not Necessary" IMHO __________________ ~ Have A Happy And Safe Holidays Everyone ~

23rd April 2011, 03:27 AM	#7
TerryO diyAudio Member Join Date: Nov 2002 Location: Seattle,Wash.	What I, and many others use, is Duct Seal putty, or if you can't find it, Oil-Based Modeling Clay. Neither one will ever harden, can be reused or removed, and isn't very expensive. However, it will not lower the Fs of your driver. [Edit: I see that Ron E has provided a link in the previous posting.] Best Regards, TerryO __________________ "If you have to ask why, then you're probably on the right track." quote from Terry Olson's DIYaudio Forum application Last edited by TerryO; 23rd April 2011 at 03:31 AM.

23rd April 2011, 05:26 AM	#9
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Don't forget the role something like ductseal can have in improving the aerodynamics of the back of the driver (and thus reduce the bleedthru of time smeared signal getting out thru the cone). dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

23rd April 2011, 05:55 AM	#10
dantheman diyAudio Member Join Date: May 2008 Location: Mountain View, CA	Dave, can you post your pics of these modifications you've made. I can't seem to find them here. Thanks, Dan __________________ My Blog My Music Recordings


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23rd April 2011, 12:24 AM	#3
dewardh diyAudio Member Join Date: Dec 2005 Location: Berkeley, CA	Pretty much pointless. Just magnet mount the driver . . . then the only load on the frame is the almost trivial force from the surround.

23rd April 2011, 04:56 AM	#8
DJNUBZ diyAudio Member Join Date: May 2003 Location: Chicago	Dynamat extreme or Roadkill work well for this application. Makes a bigger difference on stamped basket drivers then cast basket. Making a thicker baffle to mount to would be a much more productive way of dampening vibrations.

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