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weemies · 20th July 2007

That's right, yet another bass trapping thread. If you're sick of them, my apologies.

I recently DIY'd nine 6" bass traps, and while they helped flatten the bass response tremendously, I'm still far from satisfied.

Here's a pic of my room layout:

I already sent this pic to Ethan Winer a while ago via email (hi, Ethan

), when I was planning a RealTraps purchase. I got some good pointers from Ethan. I however decided that RealTraps were too much for my wallet, especially because of overseas shipping, so I went the DIY way.

Anyway, the pic is totally accurate, except it doesn't show the traps. I have two traps on top of each other in every corner of the room (at the back they are in the alcove back corners), covering the corners from floor to the ceiling. That's eight traps right there. The one spare trap I have is currently lying at the right wall-floor corner, as I can't very easily hang the traps at wall-ceiling corners, because my traps haven't got any frames - just fabric wrapped around them.

My problem is with the lower bass range. I used the RealTraps sonar project of 1 second sine waves from 40 to 300 Hz to measure the bass response. At ~60 Hz there's almost a total cancellation, and below ~130 Hz the overall volume level is probably like 10 dB lower than from ~130 Hz upwards. My ears can easily tell that there simply isn't enough bass at the listening position.

I'm considering making even more traps at some point and placing them to wall-ceiling corners, but I'm hoping to get other ideas here. Another listening position perhaps? I've experimented a little already (a a foot towards the front, towards the back, towards the right), but it isn't really helping. The overall flattest response has been at the position shown in the picture.

I'd appreciate any ideas you might have. Great forum, btw, but not good for the wallet.

20th July 2007	#1
weemies Gear nut Join Date: Sep 2006 Posts: 120 Thread Starter	Help with bass trapping That's right, yet another bass trapping thread. If you're sick of them, my apologies. I recently DIY'd nine 6" bass traps, and while they helped flatten the bass response tremendously, I'm still far from satisfied. Here's a pic of my room layout: I already sent this pic to Ethan Winer a while ago via email (hi, Ethan ), when I was planning a RealTraps purchase. I got some good pointers from Ethan. I however decided that RealTraps were too much for my wallet, especially because of overseas shipping, so I went the DIY way. Anyway, the pic is totally accurate, except it doesn't show the traps. I have two traps on top of each other in every corner of the room (at the back they are in the alcove back corners), covering the corners from floor to the ceiling. That's eight traps right there. The one spare trap I have is currently lying at the right wall-floor corner, as I can't very easily hang the traps at wall-ceiling corners, because my traps haven't got any frames - just fabric wrapped around them. My problem is with the lower bass range. I used the RealTraps sonar project of 1 second sine waves from 40 to 300 Hz to measure the bass response. At ~60 Hz there's almost a total cancellation, and below ~130 Hz the overall volume level is probably like 10 dB lower than from ~130 Hz upwards. My ears can easily tell that there simply isn't enough bass at the listening position. I'm considering making even more traps at some point and placing them to wall-ceiling corners, but I'm hoping to get other ideas here. Another listening position perhaps? I've experimented a little already (a a foot towards the front, towards the back, towards the right), but it isn't really helping. The overall flattest response has been at the position shown in the picture. I'd appreciate any ideas you might have. Great forum, btw, but not good for the wallet.