Acoustics 102 with Anthony Grimani - Page 2 - AVS Forum
Forum Jump: 
Thread Tools
post #31 of 35 Old 10-21-2013, 02:51 PM
Senior Member
Noman74656's Avatar
Join Date: May 2011
Location: Minneapolis, Minnesota
Posts: 269
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 29 Post(s)
Liked: 41
This might not be the thread for this, but reguarding what Anthony said about MTM configuration (Midrange, tweeter, midrange) not being a good setup for center channels and avoiding it at all costs, does that include center channels with all types of tweeters (horn, dome, ribbon)?

"In nature there are neither rewards nor punishments; there are consequences."Robert Green Ingersoll

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Noman74656 is offline  
Sponsored Links
post #32 of 35 Old 10-22-2013, 03:09 PM
Senior Member
Orbitron's Avatar
Join Date: Jul 2012
Posts: 456
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 155 Post(s)
Liked: 115
Hey Scott, enjoyed your interview with Anthony. Any plans to have another show on calibration, perhaps you can show us how you calibrated your home theater?
Orbitron is online now  
post #33 of 35 Old 10-22-2013, 03:55 PM
skater2's Avatar
Join Date: Apr 2012
Posts: 92
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 24 Post(s)
Liked: 31
One thing he said that bothered me is that he talked about the inability for automatic room correction systems to correct for multipath reflections. While I agree with a very narrow interpretation of what he said (equalization cannot compensate for multipath reflections), Audyssey MultEQ is not only an equalization solution, but a time-domain solution as well. The fact that he didn't acknowledge that makes me think he might not be fully knowledgeable on room correction systems like Audyssey.
skater2 is offline  
post #34 of 35 Old 10-22-2013, 07:26 PM
Advanced Member
HFGuy's Avatar
Join Date: Jan 2011
Location: Toronto
Posts: 559
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Liked: 18
What I believe he is referring to is their inability to actually fix the problem of multipathing. Room correction such as that you mentioned only mask the problem by attempting to fix it at a few locations in the room. There is another webcast of Scotts here he interviews the designer of the old Hales company, I think he works for "Pro Tech" or something like that now, he does a great job of explaining the problems with room correction.
HFGuy is offline  
post #35 of 35 Old 10-26-2013, 09:12 AM
NORLL's Avatar
Join Date: Sep 2003
Location: Norway
Posts: 188
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
I really enjoyed these two episodes. Great work!

I have two questions on the topics.

One question is about covering acoustics panels with fabrics. Most fabrics, for instance velvets, are usually not specified as being acoustically transparent. If you hold such fabrics over a sound source you will hear that they have very little dampening (perhaps a little bit in the very high frequencies, but no effect at all on lower frequencies). Let say you cover broad band absorbers with velvet that is not specified as being AT. I don't think it matters much if the absorption happens in the cover fabric or in the absorber panel. This begs the question if there is any point in using AT-fabrics for covering absorbers? I guess there might be a very slight effect when using non-AT fabric for covering diffusers (causing slight high frequency roll-off), although I think the effect might be almost negligible. So why is "everyone" so obsessed with using acoustically transparent cloth on acoustic treatments? Is this just a myth or has anyone actually tested it (scientifically)?

I am of course speaking about fabrics that are reasonably thin, not thick carpet-like or waterproof materials.

There was also a listener question in one of the episodes (I do not remember if it was episode 1 or 2) about baffle walls in home theaters. It seemed Anthony Grimani and Scott Wilkinson did not understand the question. This surprised me a little bit because I would have guessed that the question was about the use of THX baffle walls in an home theater environment. My guess is that Anthony Grimani actually knows a lot about baffle walls from his previous experience. I am a bit surprised it was not touched upon or mentioned at all. What do you guys think the reason behind this is? One would think that Anthony would have mentioned it if he meant it was important for acoustics in home theaters...

Perhaps anyone would like to comment?
NORLL is offline  
Reply AVS Forum Podcasts

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off