Quote:
Originally Posted by Martycool007 
I would like to pose a question for all of the Def Tech gurus out there...
How should room treatments be implemented with regards to using Def Tech bipolar speakers in a theater room? I do of course know that you should never use absorb panels on the front wall behind a bipolar speaker, but being that the whole point of using bipolar speakers is to bounce the sound waves off the room boundries, should any absorbt panels be used at all? Are the first reflection points ideal for this? Have any of you guys ever measured a pair of Def Tech bipolars? I woulds imagine that they would measure horrible. It just seems to me that the benefits to using Def Tech bi-poles are to get that emerging, deep sound stage that is commonly associated with these due to their bi-polar nature, and that using room treatments is a delicate task in trying not to mess with the emergence factor of the speakers. No one buys these speakers for their clarity, or detail, or even their mid-range lushness, or lack there of. NO! What people buy these speakers for is that great home theater bass feeling and the emergence factor that puts you right there in the middle of the action!
I would like to hear some more opinions from you guys on how yall feel about these things.
Marty

I would like to pose a question for all of the Def Tech gurus out there...
How should room treatments be implemented with regards to using Def Tech bipolar speakers in a theater room? I do of course know that you should never use absorb panels on the front wall behind a bipolar speaker, but being that the whole point of using bipolar speakers is to bounce the sound waves off the room boundries, should any absorbt panels be used at all? Are the first reflection points ideal for this? Have any of you guys ever measured a pair of Def Tech bipolars? I woulds imagine that they would measure horrible. It just seems to me that the benefits to using Def Tech bi-poles are to get that emerging, deep sound stage that is commonly associated with these due to their bi-polar nature, and that using room treatments is a delicate task in trying not to mess with the emergence factor of the speakers. No one buys these speakers for their clarity, or detail, or even their mid-range lushness, or lack there of. NO! What people buy these speakers for is that great home theater bass feeling and the emergence factor that puts you right there in the middle of the action!
I would like to hear some more opinions from you guys on how yall feel about these things.
Marty
Martycool, interesting! I am approaching the same task as I finish converting my "listening basement" to a true theater room. AND I am flying blind as I too have decided not to do any measurements for now. We really should buy an omnimic, but from everything I have been reading on the internet extensive corner/room bass trapping will be nothing but beneficial. Since this may take away some of the bi-polarness, (by putting broadband absorbers in the front corners behind bi-polar speakers) I have found a company that builds a scatter board in front of the trap to help maintain the higher frequency air in the room.
Here is a fantastic article on acoustic treatments that has helped me a ton....http://www.ethanwiner.com/acoustics.html
Here is what I am looking at for the corners....http://gikacoustics.com/product/gik-acoustics-tri-trap/ (with the built in scatter board for some of them) and for some of the other areas of the room....http://gikacoustics.com/product/gik-acoustics-monster-bass-trap/ They seem reasonably priced and have the option of adding the built-in diffusers so that (hopefully) they will not diminish the "bi-polarness" of the front image. I plan on being as generous as I can afford with the broadband bass traps around the room.
I have also looked at Auralex (just decided I didn't like the look of the foam and have read that it may not be as effective as the alternatives) and have also looked at DIY Owens Corning 703 or 705 fiber boards.
Because I am in the middle of buying carpet, and hopefully a projector and screen I may not get to go as nuts as I want. I have a feeling carpet my negate my need for acoustic panels for the mid and high frequency control but this may not be the case. I may just do it in steps as well so that I can hear the differences as I go along. After bass trapping I will determine if I need acoustic panels for the side walls and with bi-polar speakers, I may add some additional diffusion to the side and rear walls.
Best of luck on everything. Bottom line....Ethan's article above is very informative and should give you a good start. AND like you, I am avoiding putting anything on the front and rear walls (other than maybe diffusion and bass trapping in corners) so that I avoid losing the "bi-polarness" that I enjoy.














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