Axiom Home Page Forums General Discussion Home Theater Room Treatments

So I guess what your saying is that by putting of "room treatments" will not really improve sound, but make it worse? Someone told me that my sub is already overkill for that size room 15x9 a SVS 25-31pci. If I could find a way to make a graph of in room response, I will post it and see if anyone can give any info. The main speakers are just bookshelfs M2's right now, so I just need to smooth out the freqencies below what the M2's are capabiliby of, I have them set for 100hrz cutoff with the sub cut off at 120hrz, but the 50-70hrz is drasically rolled off to almost inaudible levels using DVE audio test 15-300hrz.

Hi,

I'd suggest trying an 80-Hz crossover frequency for the M2s and your subwoofer and see how it sounds. The M2's bass response is quite strong and smooth down to 70 Hz, as you can see from these NRC anechoic frequency response curves:

http://www.soundstagenetwork.com/measurements/axiom_m2i/

To your first question, while I'd acknowledge that every room is different, if you have a reasonable mix of both reflective and absorptive surfaces--carpet or area rugs, some upholstered furniture, some bookshelves or objects on the side walls to just break up the reflections a bit (not absorb them)-- there's an excellent chance that you don't need any room treatments. You certainly don't want to overtreat a room so that it ends up being quite dead. I've heard some "professionally" treated rooms that were so dead it was like listening on headphones. Very peculiar, with the surround signals appearing in the middle of my head because there were no natural reflections taking place in the room near and around the surround speakers.

Alan

Thanks for the help everyone. I just ran audessy on my receiver (onkyo 605). But I noticed that its 2EQ, which according to Audessy's site "2EQ measures 2 room positions, uses a basic resolution filter for the satellites and does not apply a filter to the subwoofers." It did set the fronts to 80hrz, the center vp150 to 150hrz, surrounds to 60hrz. The sub crossover is still at 120 but it set it to -8Db. What I am thinking about now is going ahead and getting the SMS-1, put the sub in my seating area and use the mic to do the sub crawl, take a picture of the screen of what it read and then go to next spot and so forth. Then put sub in the best spot and run sms1 again to fine tune. Does these seem like a good idea?

Hi gtpsuper,

Yes, a good idea, but don't rely on Audyssey so much. It's very error-prone. The VP150 has good bass down to 90 Hz. I have no idea why Audyssey wants a crossover at 150 Hz --clearly, it's in error, as is the suggestion for setting the surrounds at 60 Hz. That should be at 80 Hz.

Regards,

Alan