Whats the purpose of pressurizing a room with a sub? - AVS | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
 
Thread Tools
post #1 of 5 Old 04-14-2008, 10:46 PM - Thread Starter
Advanced Member
 
terminatorbob's Avatar
 
Join Date: Jan 2007
Location: Greer, SC
Posts: 555
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I hear a lot of talk about making sure the sub is able to pressurize the room you are putting it in. What does this do exactly? If the sub can't pressurize the room what are you missing?

Panasonic TH-42PH9UK
terminatorbob is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 04-15-2008, 08:36 AM
Senior Member
 
combos99's Avatar
 
Join Date: Apr 2008
Location: Wisconsin
Posts: 340
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 10
Envelopment and realism, When an explosion happens in a movie, most people want FEEL it. Pressurizing a room does exactly that.

I like turtles.
combos99 is offline  
post #3 of 5 Old 04-15-2008, 12:08 PM
AVS Special Member
 
Ethan Winer's Avatar
 
Join Date: Apr 2003
Location: New Milford, CT, USA
Posts: 5,757
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Liked: 139
Quote:
Originally Posted by terminatorbob View Post

I hear a lot of talk about making sure the sub is able to pressurize the room you are putting it in.

Pressurize refers to frequency versus room dimensions, and the term is often tossed around incorrectly. At very low frequencies, where a single wavelength cannot fit in the longest dimension, the frequency can still be heard. But instead of being a true wave it's a change in pressure. For example, a 40 Hz wave is 28'3" long, so playing 40 Hz in a room shorter than that will "pressurize" the room. That's an overly simple explanation, but hopefully makes the point.

What really matters with subwoofers are:

1) How low in frequency they can play to
2) How loudly they can play
3) How much distortion they produce at various sound levels

--Ethan
Ethan Winer is online now  
post #4 of 5 Old 04-15-2008, 12:27 PM
AVS Addicted Member
 
MKtheater's Avatar
 
Join Date: Jul 2006
Location: New Hartford, NY
Posts: 15,321
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 601 Post(s)
Liked: 600
Like the others have said, It creates a real environment like you are there. I remember when I was at a restaurant and a big dump truck pulled up to the stop light. It was at idle, the windows were shaking, the room just pressurized, and you can just feel its prescence(from 30 feet away). That is what to strive for, real events in your HT.

NanoAvr to Outlaw 975
amps-5 Adcom GFA-555's mono's, Sanway FP14K
5 JBL 2447 CD, 5 2352 horns, 3 15 inch 2035 for fronts, 2 15 inch 2032 for surrounds
subs-IB SI 18ht x12
MKtheater is online now  
post #5 of 5 Old 04-15-2008, 12:42 PM
AVS Special Member
 
OvalNut's Avatar
 
Join Date: May 2004
Location: North of Atlanta
Posts: 1,600
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Quote:


Like the others have said, It creates a real environment like you are there. I remember when I was at a restaurant and a big dump truck pulled up to the stop light. It was at idle and the windows were shaking and the room just pressurized and you can just feel its prescence(from 30 feet away), that is what to strive for, real events in your HT.

Applause ... Applause! That's exactly it.


Tim

He drove a black and white pirate ship at 190 mph.
- Dale in the #3 will never be forgotten. Thanks for the memories.
OvalNut is offline  
Sponsored Links
Advertisement
 
Reply Subwoofers, Bass, and Transducers

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