so let me get this straight....(after looking at your website)

placing 2 or 4, 4inch rigid fibreglass panels in the corners right up against the wall(adjacent to each other is better than one or 2 stradling the corner?;


thanks again

No straddling the corner is the same and half the cost.

Ethan, from my understanding, is doing some testing on this in a normal room. I have been harassing him (lol lol lol) to do it in a lab.

Ethan what would you think about us splitting the cost and getting this test done at Riverbank or IBM lab?

I can easily test the comparative difference between one trap straddling versus two traps adjacent and flat on the walls. Absolute absorption in sabins is not needed - all that matters is which method reduces the peaks and nulls and ringing more than the other. One of these days...

However, my new treatment video due out Real Soon Now, shows amazing results for adjacent traps flat on the walls.

--Ethan

The problem is that if just tested in a room you can only say that for that size room. Testing in a lab is not 100% but much better then a spare room kind of thing.
Come on Ethan reach down in that pocket of yours, lets do it RIGHT!! lol lol

Glenn

what would we do without you guys!?

I would think 90% of the people would be plastering egg cartons on the walls.

Not so. If traps are tested in a room of a given size using the methods described in my Alternative Test Methods article, it's true you can only measure at that room's mode frequencies. But the same absorption will exist in other rooms at those same frequencies. So if a given room has a mode at, say, 60 Hz, comparing straddling versus adjacent is valid for that frequency in all rooms, not just that room.

--Ethan

your soooo right.
only the other day someone asked me about sound treatment ,and yes,thats right ,someone else mentioned about the egg cartons!!..i told them it was a myth.and directed them to this site to get good advice.

Ethan,

I guess all us companies are just wasting our money on lab testing. Heck RPG built there own tube just for it. Guess that was a waste too. I guess also Dr Sabin was WRONG.

I am just busting on you. I do see your point but will stick with the lab.

Hope your having a great 4th Ethan.

I'm not opposed to lab tests, and I've paid for many myself as you know. But that's not what we're talking about. The point is you can absolutely compare the relative efficacy of one trap versus another in a bedroom using room testing software. However, many of the same rules used by labs apply here too:

* Nothing can change from one test to another - the microphone position and trap placements must be identical for both tests.

* For reliable results you need to test enough traps to make a meaningful change in the response and ringing. One or two traps will not make enough effect to distinguish a real difference from noise such as the rumble of traffic outside.

* The temperature and humidity need to be the same for both tests, so it's not advisable to run the test on different days even if the microphone and traps are in the same places. I think temperature and humidity affect mids and highs more than lows, but I'm not sure. It may be that testing bass traps below 300 Hz is more tolerant of temperature and humidity changes.

* For home-made testing it's a good idea to run each test a few times in a row, and confirm the same results. Rumble from traffic etc is probably the main problem with home-made tests, so running several in a row helps identify noise in a waterfall.

--Ethan

There is just to many unknowns, IMO. But I do see value in testing in a room like yours to "just see". To make it official (as in sell a new product and so on) testing in a certified lab is truly needed as most reputable acoustic companies do. That was kind of my point in my first post. Luck would have it though I may be up at Riverbank very soon. Maybe we could try a few things, if time allows.

Ethan/Glenn,

From Ethan's new video, there was a good result from the two 6"x2'x4' panels butted up in the corners. How do you think a smaller version like Glenn's new screen panel which is two 3.5"x16"x72" panels (I assume 16" which is 1/2 of 32") would do? I am debating doing something like Glenn's screen versus a single 6"x16"x72" panel tucked in the corner with fluffy stuff behind it. There will be a grandfather clock sitting in front of the panel or panels.

Left corner in second picture for reference:
http://forums.musicplayer.com/ubbthreads.php/topics/2074069/Difficult_Corners#Post2074069

It would work great, but this is really Ethan's forum (and his products only that can be talked about) so I would recommend contacting us though my company website so we can give you personal advise.

You can contact here, which lets us know all about your room
http://www.gikacoustics.com/room_setup.php
or
http://www.gikacoustics.com/contact_us.html

As always, the larger and thicker, the better.

--Ethan

You can say that again!!!!!!!!!!!

Or, "That's what she said."

where can i see the video?

thanks

Here is the video:

http://www.realtraps.com/video_hearing.htm

thanks!