damping material for speakers
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soulforged
Well-Known Member
I used felt for lining the inner baffle...you can get it from comm street...
for the stuffing, you can pick up a few dacron pillows and use their innards...else buy glasswool...again can be sourced from comm street...
for the stuffing, you can pick up a few dacron pillows and use their innards...else buy glasswool...again can be sourced from comm street...
thanx soulforged. what kind of felt are we supposed to use, there are quite a few qualities of felt i believe. any shops you know (or what kind of shops should i look for, or which part of comm street should i search) on comm street where I can get this.
GeorgeO
Well-Known Member
Dark grey, felt about 12 inch thick, used it many years ago, dont remember where I bought it form-but not difficult to find.
GeorgeO
Well-Known Member
Sorry 1/2 inch!!
Anil kumar
Well-Known Member
Hi, i use glass wool as effective damping material for speaker cabinets.
Regards,
Anil
MY DIY EFFORT
Regards,
Anil
MY DIY EFFORT
Last edited:
GeorgeO
Well-Known Member
I think you will be ok with regular felt-that's what I used-it is similar to thickish coarse blankets, it's not layered. Not open cell, and not fluffy like glass wool.
keith_correa
Well-Known Member
Try bitumen sheets.
went to commercial street and jc road (jc road was on a holiday, so not many shops were open), but could not find thick felt. i could not find felt which is the kind thats used for cheap blazer making. ended up getting open cell mattress foam 1" thick. will this do.
Felt is available as a roll and you can cut there that to your requirement. There is jute and synthetic ones, like the one used inside the cabin of a car. All of these are available at automobile upholstery shops on JC road.
Glass wool is available at Chickpet on BVK Iyengar road. There is a insulation specialist guy.
Dacron is Reliance synthetic pillows, taken apart ! Available at JC road.
Hope this helps.
Glass wool is available at Chickpet on BVK Iyengar road. There is a insulation specialist guy.
Dacron is Reliance synthetic pillows, taken apart ! Available at JC road.
Hope this helps.
For me this has worked the best
Dynamat is used on inner walls of the cabinet first ( this is extremely easy to use and source since it has adhesive on one side like a sticker)
This is a butyl based compound made especailly for damping
Next use glass wool or dacron
Qty of this is govergned by how you want the speaker to sound
Changing the qty almost tweaks the sound
small sand bags at certain corners also helps
Dynamat is used on inner walls of the cabinet first ( this is extremely easy to use and source since it has adhesive on one side like a sticker)
This is a butyl based compound made especailly for damping
Next use glass wool or dacron
Qty of this is govergned by how you want the speaker to sound
Changing the qty almost tweaks the sound
small sand bags at certain corners also helps
hi guys,
I need to understand some of the logic behind this. I see two kinds of damping being used by people. One is the soft damping like foam, egg crate foam, wool, felt, glasswool etc. The other kind is the hard ones, like floor tiles, cement, lead sheets, tar sheets etc. Looks like the soft one is for absorption of waves inside the box, and the hard one is for controlling the resonance or flexing of the box itself. So are both of these kinds required. Is the glue used for sticking softer materials also serving the purpose of binding the box and hence reducing the resonances also. Isnt the polyfill filling also doing the job of absorption? then why people use felt/foam etc? Will the hard grey putty or areldite layer do the job that a floor tile/cement kind of thing will do. These are for small speakers and there isnt a hell of a lot of space inside to do multiple layer damping.
I need to understand some of the logic behind this. I see two kinds of damping being used by people. One is the soft damping like foam, egg crate foam, wool, felt, glasswool etc. The other kind is the hard ones, like floor tiles, cement, lead sheets, tar sheets etc. Looks like the soft one is for absorption of waves inside the box, and the hard one is for controlling the resonance or flexing of the box itself. So are both of these kinds required. Is the glue used for sticking softer materials also serving the purpose of binding the box and hence reducing the resonances also. Isnt the polyfill filling also doing the job of absorption? then why people use felt/foam etc? Will the hard grey putty or areldite layer do the job that a floor tile/cement kind of thing will do. These are for small speakers and there isnt a hell of a lot of space inside to do multiple layer damping.
GeorgeO
Well-Known Member
IMHO only one of the two is needed. The poly/glassfibre is for "stuffing", not for damping.
Hi,
Like Keith mentioned a few posts earlier, use bitumen sheets, the stuff used for weather-proofing terrace floors. It comes in 3mm tk rolls (black). Its very dense and comes sandwiched between two plastic sheets. You remove one side, apply s little rubber solution which sort-of melts the tar and makes it nice & goooey.
Put the goooey side onto the panel and gently tap down, especially around the corners. I use whatever spare pieces of wood is lying around. This way it takes the 90deg shape of the cabinet corners and covers the whole area. Takes a few minutes to dry and deadens the cabinet very well.
You want to get crazy - add another layer with the second plastic sheet removed. Its great stuff, have used it quite a bit. Cheap as well.
Like Keith mentioned a few posts earlier, use bitumen sheets, the stuff used for weather-proofing terrace floors. It comes in 3mm tk rolls (black). Its very dense and comes sandwiched between two plastic sheets. You remove one side, apply s little rubber solution which sort-of melts the tar and makes it nice & goooey.
Put the goooey side onto the panel and gently tap down, especially around the corners. I use whatever spare pieces of wood is lying around. This way it takes the 90deg shape of the cabinet corners and covers the whole area. Takes a few minutes to dry and deadens the cabinet very well.
You want to get crazy - add another layer with the second plastic sheet removed. Its great stuff, have used it quite a bit. Cheap as well.
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