Jeff Elliott
Stunt Coordinator
- Joined
- Nov 5, 2002
- Messages
- 59
Hi Folks:
I've almost finished my new theater space, and I'm not too happy with the low freq. response in my seating position. I've sought help and got lots of advice, but so far, the ideas haven't been feasible or in some cases haven't worked out. I have a BFD now and am hoping that it holds much of the solution to my problems.
Here's the room setup: room drawing side elevation
Note that the subs have been moved to the corners of the stage as that yielded a more even response. Predicted modes for this space were 26hz, 42, 50, 52, 66, 68, 70, 78, 79, 83, 84.
The equipment in question is as follows: 2 AV-15's, each in 7ft^3 cabinets tuned to 18hz. Each is powered by a rythmik 350 plate amp.
Here's the response I'm getting at my seating position with the mains off: no mains
Here with the mains on: with mains
I've played with the BFD and have been able to get some minor improvements. However, even with major cuts (-40db), I can't seem to get some of the peaks down. Now, I'm ready to start over with my filters... hopefully with expert help from you guys!
Also, I'm curious as to the crossover frequency for my subs based on these graphs. I thought I was crossed over at about 60hz as my mains are supposed to be -3db @ 50hz. However, based on the no mains repsonse graph, I'm not too sure.
Any and all suggestions are welcome!
Jeff
I've almost finished my new theater space, and I'm not too happy with the low freq. response in my seating position. I've sought help and got lots of advice, but so far, the ideas haven't been feasible or in some cases haven't worked out. I have a BFD now and am hoping that it holds much of the solution to my problems.
Here's the room setup: room drawing side elevation
Note that the subs have been moved to the corners of the stage as that yielded a more even response. Predicted modes for this space were 26hz, 42, 50, 52, 66, 68, 70, 78, 79, 83, 84.
The equipment in question is as follows: 2 AV-15's, each in 7ft^3 cabinets tuned to 18hz. Each is powered by a rythmik 350 plate amp.
Here's the response I'm getting at my seating position with the mains off: no mains
Here with the mains on: with mains
I've played with the BFD and have been able to get some minor improvements. However, even with major cuts (-40db), I can't seem to get some of the peaks down. Now, I'm ready to start over with my filters... hopefully with expert help from you guys!
Also, I'm curious as to the crossover frequency for my subs based on these graphs. I thought I was crossed over at about 60hz as my mains are supposed to be -3db @ 50hz. However, based on the no mains repsonse graph, I'm not too sure.
Any and all suggestions are welcome!
Jeff