I've read online articles about making bass traps out of rigid
fiberglass (eg. Owens Corning 702) and it seems like the thing to do.
I do not need to be convinced of this. However, I was wondering if
anybody has made more portable versions of this treatment to take to
small gigs at rooms with horrible acoustics. Has this worked out? I'm
thinking maybe making the front side cloth like normal and making the
back plywood or something so it won't tear itself up in transit. I
play sometimes at a restaraunt/bar called the "Brick House" and as you
can imagine, we're playing in the inside corner of a brick house. I
was thinking it would be cool to have kind of a back drop that gets set
up against the back wall behind the drums to try to quiet the drums and
the low frequencies that often make coffee houses, etc. boomy. I could
have removable logos and stuff that stick to the fabric with the band
name and website on them.

Does this sound feasible? I'd rather not invest the money yet to find
out whether it works or not. Usenet is much cheaper. Thanks.

-Steve

i carry six heavy duty packing blankets and hang them as needed. cheap
and effective, and you can drape them over almost anything handy.

elecbanana wrote:

I've read online articles about making bass traps out of rigid
fiberglass (eg. Owens Corning 702) and it seems like the thing to
do. I do not need to be convinced of this. However, I was
wondering if anybody has made more portable versions of this
treatment to take to small gigs at rooms with horrible acoustics.
Has this worked out? I'm thinking maybe making the front side
cloth like normal and making the back plywood or something so it
won't tear itself up in transit. I play sometimes at a
restaraunt/bar called the "Brick House" and as you can imagine,
we're playing in the inside corner of a brick house. I was
thinking it would be cool to have kind of a back drop that gets set
up against the back wall behind the drums to try to quiet the drums
and the low frequencies that often make coffee houses, etc. boomy.



If you can handle the increased cartage, a few panels placed across
corners and standing out a few inches from the walls (not right against
'em) couldn't hurt.

I wouldn't suggest hard backing though. While it would make them more
roadworthy, it would also drastically reduce their effectiveness.

--
"It CAN'T be too loud... some of the red lights aren't even on yet!"
- Lorin David Schultz
in the control room
making even bad news sound good

(Remove spamblock to reply)

703 is not designed nor is it suitable for that type of use. First of all,
it is fiberglass which is a nasty skin irritant and no one who got it on
them from touching it or as aerial dust would thank you at all. Secondly it
would break up from handling. Sorry but it's not a good idea. One could
bring Helmholz resonators, which are a long, wide, flat boxes, for bass
absorption, but who would want to? You would need many of them around the
room to really make a noticable difference. My advice is just live with it.

"elecbanana" wrote in message
ups.com...
I've read online articles about making bass traps out of rigid
fiberglass (eg. Owens Corning 702) and it seems like the thing to do.
I do not need to be convinced of this. However, I was wondering if
anybody has made more portable versions of this treatment to take to
small gigs at rooms with horrible acoustics. Has this worked out? I'm
thinking maybe making the front side cloth like normal and making the
back plywood or something so it won't tear itself up in transit. I
play sometimes at a restaraunt/bar called the "Brick House" and as you
can imagine, we're playing in the inside corner of a brick house. I
was thinking it would be cool to have kind of a back drop that gets set
up against the back wall behind the drums to try to quiet the drums and
the low frequencies that often make coffee houses, etc. boomy. I could
have removable logos and stuff that stick to the fabric with the band
name and website on them.

Does this sound feasible? I'd rather not invest the money yet to find
out whether it works or not. Usenet is much cheaper. Thanks.

-Steve

elecbanana wrote:
I've read online articles about making bass traps out of rigid
fiberglass (eg. Owens Corning 702) and it seems like the thing to do.
I do not need to be convinced of this. However, I was wondering if
anybody has made more portable versions of this treatment to take to
small gigs at rooms with horrible acoustics. Has this worked out? I'm
thinking maybe making the front side cloth like normal and making the
back plywood or something so it won't tear itself up in transit. I
play sometimes at a restaraunt/bar called the "Brick House" and as you
can imagine, we're playing in the inside corner of a brick house. I
was thinking it would be cool to have kind of a back drop that gets set
up against the back wall behind the drums to try to quiet the drums and
the low frequencies that often make coffee houses, etc. boomy. I could
have removable logos and stuff that stick to the fabric with the band
name and website on them.

Does this sound feasible? I'd rather not invest the money yet to find
out whether it works or not. Usenet is much cheaper. Thanks.

-Steve


Hi Steve

try these

http://www.acousticsciences.com/ Check the tube traps

http://www.teresaudio.com/haven/traps/traps.html make your own

there is more on the theory online as well.

Used on the back corners of drum risers, between or behind amps, in
corners and behind PA stacks they can be surprisingly effective.

Gordo

elecbanana wrote:

Oh yeah, I forgot that the backing would screw it up if you put it
angled in a corner.


The panels I'm making are kind of like "crating" the 703 batts, which
*might* make them robust enough to take out with you.

I started with a frame made out of baseboard, four feet by two feet. I
then put two pieces of 1x4 board along the back at equal spacings. That
leaves the back mostly open, but provides a healthy amount of support
for the 703 batt, which ain't exactly floppy. Stretch your cloth across
the front, and your 703 batt is enclosed.

--
"It CAN'T be too loud... some of the red lights aren't even on yet!"
- Lorin David Schultz
in the control room
making even bad news sound good

(Remove spamblock to reply)

wrote:
i carry six heavy duty packing blankets and hang them as needed. cheap
and effective, and you can drape them over almost anything handy.

What kind of fire retardant are they required to have for this use?
Vertically hung cloth burns very fast.

BH


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In article , (Scott Dorsey) wrote:
BillHart,KarenPierce wrote:
wrote:
i carry six heavy duty packing blankets and hang them as needed. cheap
and effective, and you can drape them over almost anything handy.

What kind of fire retardant are they required to have for this use?
Vertically hung cloth burns very fast.

Boric acid should be fine. Around here the fire inspector just holds a
lighter to the stuff... if it doesn't actually flame (and it stops burning
when the lighter is removed), it's fine.
--scott

This reminds me of the paper insulation I put in the attic.
I don't think Borics Acid is the best for handled material, as
it comes off somewhat and might even harm stuff. Burns
your eyes. If water gets on the stuff, the Boris Acid washes
out. Remember fiberglass drapes. I guess that would work.

greg

"Scott Dorsey" wrote in message
...
BillHart,KarenPierce wrote:
wrote:
i carry six heavy duty packing blankets and hang them as needed. cheap
and effective, and you can drape them over almost anything handy.

What kind of fire retardant are they required to have for this use?
Vertically hung cloth burns very fast.

Boric acid should be fine. Around here the fire inspector just holds a
lighter to the stuff... if it doesn't actually flame (and it stops burning
when the lighter is removed), it's fine.
--scott

Boy do I wish it was that simple here
any fabric used near a stage need to have its fire retardency certification
affixed permently to it
no cert sewn on, cant use it
george