Just to bend the thread a little more: here is a paper writen by Francesco Asdrubali, titled "SURVEY ON THE ACOUSTICAL PROPERTIES OF NEW SUSTAINABLE MATERIALS FOR NOISE CONTROL" which presents some very interesting data on sound absorption of various material (especially cellulose).
Roger
Roger
thanks for the paper - perhaps Kimsul was a superior acoustic use product besides one for house insulation.
Chalk up another for good quality open-fibre carpet underlay. Usually one with a high wool percentage is favourite (if jute is unavailable, which it usually is now, more's the pity) not for mystical properties, but simply because it's more likely to have reasonably open fibres. Monacor's MDM2 & MDM3 also do a good job if you can get hold of it (possibly tricky in North America).
I'm going to be in Benton (the next town up I-30 toward Little Rock) tomarrow. There is an HD there, so I'll get a roll of Ultratouch and report back.
Bob
Bob
Good luck - a lot of HD stores don't stock it locally, so you have to get it online.
Edit - I looked at the HD web site, and it appears this product is on-line only. The closest I could find was some Frost King cotton pipe insulation carried locally by Lowe's. I'll be looking at it tonight, as I want some alternative to polyester fluff. I'd like to find a local source for jute carpet backing for the same purpose. The closest alternative to jute might be getting some cheap coconut fiber doormats and cutting them up.
Edit - I looked at the HD web site, and it appears this product is on-line only. The closest I could find was some Frost King cotton pipe insulation carried locally by Lowe's. I'll be looking at it tonight, as I want some alternative to polyester fluff. I'd like to find a local source for jute carpet backing for the same purpose. The closest alternative to jute might be getting some cheap coconut fiber doormats and cutting them up.
Last edited:
Serendipity - Bonanza!
I went to Lowe's tonight looking for the Frost King cotton pipe insulation I mentioned in my previous post. Never got to it, as I instead stumbled across Ultratouch R-19 (and R-13, I think) insulation in big body bags.
The Lowe's web site does not even acknowledge the existence of this stuff, so its presence in this particular store may be a local purchasing decision. At any rate, I grabbed a big, big bag of the R-19 and dragged it home with me. At the very least, It'll do yeoman duty in filling up my sealed speaker enclosures (begone, crappy polyester fluff...). I may be able to slice it thin enough to staple to the inside walls of my ported enclosures.
The moral of the story is - check out yer local big-box stores - you may (just may) be pleasantly surprised. If not, howl loud enough and you may yet get happy...
I went to Lowe's tonight looking for the Frost King cotton pipe insulation I mentioned in my previous post. Never got to it, as I instead stumbled across Ultratouch R-19 (and R-13, I think) insulation in big body bags.
The Lowe's web site does not even acknowledge the existence of this stuff, so its presence in this particular store may be a local purchasing decision. At any rate, I grabbed a big, big bag of the R-19 and dragged it home with me. At the very least, It'll do yeoman duty in filling up my sealed speaker enclosures (begone, crappy polyester fluff...). I may be able to slice it thin enough to staple to the inside walls of my ported enclosures.
The moral of the story is - check out yer local big-box stores - you may (just may) be pleasantly surprised. If not, howl loud enough and you may yet get happy...
Last edited:
Bob, I did some searching around on the Ultratouch you are asking about and found most people claimed it only fluffed up to ~1.25" max.
Local here must be ordered in 🙁
See those 12" squares 1" thick for $30? About fell out with that price 🙄
Local here must be ordered in 🙁
See those 12" squares 1" thick for $30? About fell out with that price 🙄
What? At Lowe's just a few hours ago I got a bag of Ultratouch R19 insulation for $39 that literally filled up the back seat of my car - shop elsewhere.
Wrenchone,
This material looks much thicker than the 1/2" lining ChrisB and Dave have been referring too. I've used the 2" thick Ultratouch Denim and ripping it into 1" or thinner can be time consuming. The 2" material is fluffier and less compact than the 1/2" stuff shown in various pics/build from team P10.
No offense, but shouldn't this discussion be under "Construction Tips" or "Equipment and Tools" rather than "Full Range"?
Perhaps, but lining/stuffing is and integral part of the design of MLTL's, TL's, BLH's, even OB's that get so much print here. And how many forums can one follow if one has a real life?
Anyway, I sill have half a box of Armstrong #420, so I don't need the Untratouch today. I am going to get a roll somehow, just because.
Bob
Bob, re:Armstrong #420 -- I tried to find it but no luck. I assume it is a drop-in ceiling tile? Is it real rigid or rather floppy? Can it be bought one-at-a-time or does it have to be bought in a case of (insert number here)?
Lastly, has anyone ever tried the rigid 24x48 ceiling tiles?
Lastly, has anyone ever tried the rigid 24x48 ceiling tiles?
Fair enough. I'm just thinking that the Full Range forum might not be the first place someone might turn if looking for information on stuffing/lining.
Normally boxed, 12, 2' x 4' panels per typical
Try looking for a ceiling installer. They normally have something similar, ask nice or a 12 pack of beer goes a long way 😉
Are you asking about the plastic face fiberglass or the molded cellulose type?
I get mine at Lowes. It is a contractor product and not available in single panels. A box of 16 is $100 today. I know that's a lot for someone who is going to do maybe two speakers a year, but I go through several boxes a year. #420 has a plastic face that you would remove for speakers. It is rigid to the point that if supported on all four sides, it will not sag. The panels are 5/8"x24"x48, and this is most likely the product that you are asking about.
An alternate is a Owens Corning 703 knockoff HERE. 1"x24"x48" A little thick for the purpose, be it does work. $47 + shipping for a box of 6.
Bob
I'm looking at automotive jute dampening cloth as an alternative to line my ported boxes. The stuff I can find is 3/8" thick - I'd be inclined to double it up and staple it in place. Alternate suggestions?
I used Ultratouch as a part of my room treatment. It is superior to most materials I investigated in its absorptions at low frequencies. This may be good for certain box designs like sealed but not for others.
like fibreglass, rockwool, etc, Ultratouch comes in different thicknesses - for those of us that like to line enclosure internal panel walls, the 1/2" is great - I've also used separated /teased 2" thick material as cavity fill / lining on larger enclosures - such as M10A10 TL and the sealed woofers on the Ellipse 2-ways
A lot of the big bale of R-19 Ultratouch I bought is going to go into a couple of ancient sealed omnidirectional speakers I'm upgrading. I may find some other options for lining ported enclosures and the like just by cruising the same Lowe's where I found the Ultratouch - I haven't even checked out the Frost King pipe insulation yet, which is probably about the right thickness. There are Ebay sellers for jute-based dampening felt.
Industrial felt 1/2" SAE F13 and F15 self-adhesive
I'm new to the forum but planning a Frugel Horn Mk3 build and I've been looking for appropriate felt. I found SAE F13 and F15 grades of wool blend felt that may be the perfect density and thickness for, say, the FH3 on Amazon in 12"x12" self adhesive squares:
Amazon.com - Heavy Duty/Industrial Felt (F13-12" x 12" Square with Adhesives), 1/4 in
or maybe better yet in no-adhesive 12"x72" rolls:
Grade F13 Pressed Wool Felt Sheet, Gray, Meets SAE J314, 1/2" Thickness, 12" Width, 72" Length: Amazon.com: Industrial & Scientific
They're available in various thicknesses, densities and dimensions if you search for "industrial felt F13" or "industrial felt F15".
Here's a description of different SAE felt grades/densities
http://www.professionalplastics.com/professionalplastics/TypesofFelt.pdf
where F13 and F15 appear to be the recommended densities for acoustic treatments although obviously some applications might warrant higher or lower grades.
I hope this is another good--albeit more costly--alternative to the 3/8" denim that's available at Home Depot or Lowes.
I'm new to the forum but planning a Frugel Horn Mk3 build and I've been looking for appropriate felt. I found SAE F13 and F15 grades of wool blend felt that may be the perfect density and thickness for, say, the FH3 on Amazon in 12"x12" self adhesive squares:
Amazon.com - Heavy Duty/Industrial Felt (F13-12" x 12" Square with Adhesives), 1/4 in
or maybe better yet in no-adhesive 12"x72" rolls:
Grade F13 Pressed Wool Felt Sheet, Gray, Meets SAE J314, 1/2" Thickness, 12" Width, 72" Length: Amazon.com: Industrial & Scientific
They're available in various thicknesses, densities and dimensions if you search for "industrial felt F13" or "industrial felt F15".
Here's a description of different SAE felt grades/densities
http://www.professionalplastics.com/professionalplastics/TypesofFelt.pdf
where F13 and F15 appear to be the recommended densities for acoustic treatments although obviously some applications might warrant higher or lower grades.
I hope this is another good--albeit more costly--alternative to the 3/8" denim that's available at Home Depot or Lowes.
- Status
- Not open for further replies.