Bass Traps w/Rigid Fiberglass

Doublehelix · 24th August 2005

I finally found a local dealer for some of the OC 703 (2") rigid fiberglass...

They have both the foil-lined and the paper-lined. I remember reading some posts quite a while ago about the advantages/disadvantages of each...can someone refresh my memory?

I am looking to build traps that will have 4" of 703 (2 layers of 2") in a wood frame with a similar design to Ethan's DIY models. I'll be trapping each corner, plus the ceiling/wall junction above the back of the console. I have some foam on the side walls now, but might replace them eventually.

Any help would be greatly appreciated.

kungfugeek · 24th August 2005

I'm no expert, but I have built several of these for my studio as well. The faced pieces will provide an increase in low frequency absorption, but will reflect some high frequencies. I used non faced material for all my absorbers, with the exception of the ones in corners. I used foil faced material on only the back piece (2"x2'x4')x2 The foil should faced material should face the wall. Without a doubt my room sounds 100% better now. I somewhat followed the plans illustrated here. http://www.pmerecords.com/Broadband.cfm

Ethan Winer · 24th August 2005

DH,

> They have both the foil-lined and the paper-lined. I remember reading some posts quite a while ago about the advantages/disadvantages of each. <

You already got the right answer. For more information (and the proof) see my Density Report:

www.ethanwiner.com/density/density.html

--Ethan

dim light · 24th August 2005

Ethan it's time to write a new report!

Bass trap made of hair and old earrings.

NathanEldred · 24th August 2005

If you can get 705 it works better. Or an even more nifty idea, put a layer of 703 on the outer most part of the panel, with 705 on the inside, then you get a nice balance of bass trapping and HF absorption.

PinkHumpy · 25th August 2005

I used the foil kind because that's all I could find out my way. I peeled it off of most of the panels, but left it on some for a variety. Here's some info and sound clips I put together of before and after making my own DIY traps. I'm really happy w/ mine.
http://www.pinkhumpy.com/basstraps.html

Doublehelix · 25th August 2005

Thanks all!!!

krs · 27th September 2005

Hey I'm bringing this one back...I'm finally getting around to improving my acoustics - I'm building some bass traps.

I have the frames underway, I'm looking for the best way to hold the Roxul into the frame (underneath the fabric) that doesn't cost a lot. I was pricing out screen today, and I was surprised at the price. Any alternatives to suggest?

cheers

C/G · 27th September 2005

When I get around to building mine, I thought about using the silver and blue grill cloth from Fender amps, or the salt and pepper Hiwatt style. It would be expensive as hell but would look super cool.

Musiclab · 27th September 2005

Quote:

Originally Posted by Colin Gaucher

When I get around to building mine, I thought about using the silver and blue grill cloth from Fender amps, or the salt and pepper Hiwatt style. It would be expensive as hell but would look super cool.

Anything HiWatt style would be super cool!

J.D. · 4th December 2006

thanks for the above link, but are there online links for buying rockwool?

jd

treymonfauntre · 4th December 2006

you need to get it shipped freight so buying it locally is a much better idea

24th August 2005	#1
Doublehelix Lives for gear Join Date: Jan 2004 Location: USA Posts: 1,016 Thread Starter	Bass Traps w/Rigid Fiberglass I finally found a local dealer for some of the OC 703 (2") rigid fiberglass... They have both the foil-lined and the paper-lined. I remember reading some posts quite a while ago about the advantages/disadvantages of each...can someone refresh my memory? I am looking to build traps that will have 4" of 703 (2 layers of 2") in a wood frame with a similar design to Ethan's DIY models. I'll be trapping each corner, plus the ceiling/wall junction above the back of the console. I have some foam on the side walls now, but might replace them eventually. Any help would be greatly appreciated. __________________ DH "Nobody goes there anymore; it's too crowded." -Yogi Berra

24th August 2005	#3
Ethan Winer Gear Guru Join Date: Oct 2002 Location: New Milford, CT, USA Posts: 12,050	DH, > They have both the foil-lined and the paper-lined. I remember reading some posts quite a while ago about the advantages/disadvantages of each. < You already got the right answer. For more information (and the proof) see my Density Report: www.ethanwiner.com/density/density.html --Ethan __________________ Ethan's audio book is coming!

24th August 2005	#4
dim light Lives for gear Join Date: Dec 2003 Location: China Posts: 2,336	Ethan it's time to write a new report! Bass trap made of hair and old earrings. __________________ Moderators you can't kill my art!

24th August 2005	#5
NathanEldred Lives for gear Join Date: Jun 2002 Location: West Coast Central Florida Posts: 7,130	If you can get 705 it works better. Or an even more nifty idea, put a layer of 703 on the outer most part of the panel, with 705 on the inside, then you get a nice balance of bass trapping and HF absorption. __________________ Nathan Eldred Visit Atlas Pro Audio USA Distributor for Buzz Audio Atlas Recording Studios, Inc.

25th August 2005	#6
PinkHumpy Gear Head Join Date: Dec 2004 Location: Philly Posts: 58	I used the foil kind because that's all I could find out my way. I peeled it off of most of the panels, but left it on some for a variety. Here's some info and sound clips I put together of before and after making my own DIY traps. I'm really happy w/ mine. http://www.pinkhumpy.com/basstraps.html __________________ Brendan www.pinkhumpy.com myspace.com/pinkhumpy cdbaby.com/cd/pinkhumpy

24th August 2005	#2
kungfugeek Gear maniac Join Date: May 2005 Location: Baltimore, MD Posts: 264	I'm no expert, but I have built several of these for my studio as well. The faced pieces will provide an increase in low frequency absorption, but will reflect some high frequencies. I used non faced material for all my absorbers, with the exception of the ones in corners. I used foil faced material on only the back piece (2"x2'x4')x2 The foil should faced material should face the wall. Without a doubt my room sounds 100% better now. I somewhat followed the plans illustrated here. http://www.pmerecords.com/Broadband.cfm

27th September 2005	#8
krs Lives for gear Join Date: Jun 2004 Posts: 882	Hey I'm bringing this one back...I'm finally getting around to improving my acoustics - I'm building some bass traps. I have the frames underway, I'm looking for the best way to hold the Roxul into the frame (underneath the fabric) that doesn't cost a lot. I was pricing out screen today, and I was surprised at the price. Any alternatives to suggest? cheers

27th September 2005	#9
C/G Lives for gear Join Date: Dec 2004 Location: Canada Posts: 2,829	When I get around to building mine, I thought about using the silver and blue grill cloth from Fender amps, or the salt and pepper Hiwatt style. It would be expensive as hell but would look super cool. __________________ ------------------------------------------------------------------------

4th December 2006	#11
J.D. Gear Head Join Date: Apr 2006 Location: Los Angaleeees Posts: 56	thanks for the above link, but are there online links for buying rockwool? jd

4th December 2006	#12
treymonfauntre Lives for gear Join Date: Apr 2006 Posts: 567	you need to get it shipped freight so buying it locally is a much better idea __________________

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