Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Audio and Video Talk
Acoustics & Room Treatment
Room acoustic setup
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support AVForums:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Timber_MG" data-source="post: 699434" data-attributes="member: 18"><p>When you have thin panels that is typically true (exceptions are expensive to manufacture or are employed at room construction time with carefully tuned dry walling). When one has 9m of room length to play with, one can sacrifice half a meter or so and get effective absorption down to a fairly low frequency and then one uses DSP to sweep up some remaining peaks. The axial modes along the length of the room for 9m are around 19, 38Hz, 57Hz etc where typical super chunk type traps are only really effective from 50Hz and up for the larger types. One typically combines a few effects with perforated/slotted panels, staggered absorption density and air gaps to get optimal absorption in a targeted band of frequencies.</p><p></p><p>When using DSP the result can become highly dependent on listener position. A combination of both results in more even sound over the room (almost completely even in the case of the active absorption schemes like DBA) You can try a DBA with only two subs if you can flip polarity and insert a delay. The effect will be present above 1/2wl of the room width or up to ~60Hz if you place the two subs in the middle (height and width) of the walls.</p></blockquote><p></p>
[QUOTE="Timber_MG, post: 699434, member: 18"] When you have thin panels that is typically true (exceptions are expensive to manufacture or are employed at room construction time with carefully tuned dry walling). When one has 9m of room length to play with, one can sacrifice half a meter or so and get effective absorption down to a fairly low frequency and then one uses DSP to sweep up some remaining peaks. The axial modes along the length of the room for 9m are around 19, 38Hz, 57Hz etc where typical super chunk type traps are only really effective from 50Hz and up for the larger types. One typically combines a few effects with perforated/slotted panels, staggered absorption density and air gaps to get optimal absorption in a targeted band of frequencies. When using DSP the result can become highly dependent on listener position. A combination of both results in more even sound over the room (almost completely even in the case of the active absorption schemes like DBA) You can try a DBA with only two subs if you can flip polarity and insert a delay. The effect will be present above 1/2wl of the room width or up to ~60Hz if you place the two subs in the middle (height and width) of the walls. [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
Acoustics & Room Treatment
Room acoustic setup
Top