Bass traps and Acoustical panels

amistybleu · Post by **amistybleu** » Fri Aug 25, 2006 2:33 am

Ground control to Major Tom. anybody.

amistybleu · Post by **amistybleu** » Fri Aug 25, 2006 5:09 pm

at the beginning of this forum it says ACOUSTICS> what is a bass trap? this is a basic question and I cant even get anybody to respond on where to put it, why are some people so high on themselves that they build a forum that describes basic questions and then wont answer slightly more complex questions, It seems to me that it started as a help forum and has become a forum for high end sound people to belittle the new guy.

Come on and hark back to your beginnings and help with more than how to work with jpg files.

Mike

josh_c · Post by **josh_c** » Sat Aug 26, 2006 12:18 am

all of the answers you seek are here, you just have to look around. being such a beginner it would be wise for you to research, rather than demand people give you answers.

amistybleu · Post by **amistybleu** » Sat Aug 26, 2006 3:34 am

I have researched and I just purchased OC 703 to build my absorber panels, I once again did a search for "Bass Trap location" Finding first deflections", "positioning of absorber panels" and find little specific in answering those questions. My quandry, as I stated before is that ALL MY RESEARCH regarding the placement of absorbers takes into account a CENTRAL LISTENING AREA, with a band we are all playing and listening from different locations and this confuses me regarding the placement. regarding the traps I will build, my reasearch has found that many say to put traps in all corners, my question regarding that was should I put them behind the Guitar and bass amps which sit in corners, i have read extensively on Ethan Winers site, Jon Risch's site, this site, homerecording.com and have obtained some great info, some conflicting, and some not found, I have sat in front of this computer for hours on end and bringing my questions to this forum I felt appropriate.

I demand absolutely nothing, what I have seen here on a larger scale is people willing to turn there heads on an assumption that I haven't researched shit and want quick answers.

I am new to all of this and am attempting to learn a great deal in a short period of time, I just completed framing a basement with 2 sheets of drywall and green glue, insulation, isolation tape, acoustic caulk etc, etc and now I am ready to move on.

If anybody out there thinks I have done enough to this point and would deserve 10 min of your time that would be fantastic.

Ethan Winer · Post by **Ethan Winer** » Sat Aug 26, 2006 4:50 am

Mike,

> I demand absolutely nothing <

When I saw your first post, the drawing looked familiar and it seemed I had already answered you somewhere. So I figured I'd see who else had something to offer. Did you post that in my forum at Musicplayer.com? Or did you send it to me via email? Regardless...

> bass traps: do I want them in all corners, and if so do I want them stacked 2 high based on jon's 3' design, should bass traps be behind the guitar and bass amps. <

With bass trapping, the more the merrier. While you can definitely make a room too dead sounding at mid and high frequencies, I don't think it's possible to have too much bass trapping. In fact, I'm sure of it.

I have 40 traps in my living room, and every time I added more the low end continued to get flatter and tighter - both audibly and measurably.

> acoustic panels/absorbers: once again, everthing I have read regarding placement of absorbers are based on first deflections and a central listening location, this leaves me confused as there are three band members and possibly listeners at the couch. <

Reflections off nearby surfaces create comb filtering, so it's a good idea to treat walls right behind a couch, and often behind a drum set too. There's no hard and fast rules though. Sometimes you want the characteristic sound of reflections. Though I personally prefer things more on the dead side.

> regarding the construction of the absorbers jon says to space 1x4s every 14"in the back of the frame for attaching the insulation via the paper, I read where Ethan Winer said that you would not want solid materials across the back of the panels as this would hamper performance. <

First, listen to me, not Jon Risch.

Second, small cross braces are not a problem. What is a problem is when the entire rear of a fiberglass panel is covered with plywood or MDF, and the panel is mounted straddling a corner. I think even Jon knows that.

--Ethan

amistybleu · Post by **amistybleu** » Sat Aug 26, 2006 6:07 am

Hello Ethan,

I emailed that to you and spoke with you on the phone a couple of weeks ago, I spoke with the boys and we all agreed that your product seems awesome although we are all a few thousand away from divorce and decided DIY was the current way to go, Sorry.

Thank you soooooooooooooooo much for the response as I am sure that this will get us off and running, to some this may seem like basic information and I tip my hat to Mr. Ethan Winer for helping the little guy.

BTW, I saw your music video and was very entertained, excellent work.

Respectfully

Mike

Ethan Winer · Post by **Ethan Winer** » Sun Aug 27, 2006 1:16 am

Mike,

> I emailed that to you <

I knew I'd seen it before.

> BTW, I saw your music video and was very entertained, excellent work. <

Thanks! I still get emails almost daily from people that saw it and liked it enough to track me down.

--Ethan

Ro · Post by Ro » Wed Dec 13, 2006 9:16 pm

Not to bump this thread but to tell something about Graphic formats so other MIGHT learn.

A graphical picture in BMP is an uncompressed Bit Map Picture. Where EVERY pixel is a byte (or word if 16bit color schema). This can result in large filesizes. It's a bare format. Very clear pix but huge filesizes.
Uploading huge files is not allowed, hence the upload error.
(also the dimensions do make file sizes grow. the bigger the picture, the greater filesize ofcourse)

What to do? Well COMPRESS the picture. For example to JPEG, GIF or PNG. Those are all compressed file formats. It's kinda like WAVE file versus MP3 file.

Compressing a picture can result in ratios of 1:100 for example (ofcourse depending on the source)

So, conclusion:
- Do NOT upload BMP files
- Do NOT oversize the pictures (640*450 is web standard)
- Compress BMP files to JPG, GIF or PNG first

Which program to use? hmm, in ms office there's a little extra applic called "photo editor"(off 97) or "Office Picture Manager" (off 2003) which I use a lot. Other sofware is Photoshop, Imageready and such.

good luck!