Generic Advice on Accoustics - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

Reply
 
Thread Tools
post #21 of 24 Old 10-03-06, 09:03 AM
HTS Senior Moderator
 
bpape's Avatar
Bryan Pape
 
Join Date: Sep 2006
Location: Wildwood, MO (St. Loui
Posts: 5,288
Send a message via AIM to bpape Send a message via Skype™ to bpape
Re: Generic Advice on Accoustics

Exactly. They want to see what the speakers will really do without any room interaction.

As for keeping room gain in mind when designing Ethan, they have to. Yes - every room will be different in terms of modal issues. However, the entire spectrum does get some gain. Take an amplifier and a speaker of your choice and measure the speaker spectrum at 1W input in an anechoic chamber. Then measure it again with 1W outside. Then 1 last time in a room at 1W. You'll find that the overall average level will differ between the 3 situations even though it's the same system, same speakers, same power applied, etc.

Some speakers even count on the walls for their 'effects' - think Bose, think Martin Logain, think any speaker tha has a bass driver close to the floor to extend apparent 'in room' response.

The trick is to get the room ISSUES ironed out and still allow it to function in harmony with the speaker as designed. If I can get the room peaks and nulls smoothed but keep the gain, then I've done part of my job

Specific manufacturers even spec how far from the front wall the speakers should be placed. Why? To get the SBIR to HELP the response in certain areas. It's not pretty but it's real.

Bryan

I am serious... and don't call me Shirley.

Bryan Pape
Lead Acoustician/Owner
Sensible Sound Solutions
bpape is offline  
Sponsored Links
Advertisement
 
post #22 of 24 Old 10-03-06, 12:58 PM
Senior Shackster
 
Ethan Winer's Avatar
Ethan Winer
 
Join Date: Jul 2006
Location: New Milford, CT, USA
Posts: 251
Lightbulb Re: Generic Advice on Accoustics

Bryan,

> the entire spectrum does get some gain. <

Gotcha, that makes sense.

--Ethan

Focal Press Book:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
Ethan Winer is offline  
post #23 of 24 Old 10-04-06, 08:28 AM
GIK Acoustics
 
Glenn Kuras's Avatar
Glenn Kuras
 
Join Date: Sep 2006
Location: Atlanta, GA
Posts: 37
Re: Generic Advice on Accoustics

Good to see you here Ethan. It is always a pleasure to have your knowledge in a forum, so please put this on your "every day" list. If for nothing else but the cool smilies you can use.

Glenn

Glenn Kuras - GIK Acoustics

To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
Glenn Kuras is offline  
 
post #24 of 24 Old 10-27-06, 04:50 AM
drf
drf
 
Join Date: Oct 2006
Location: Somewhere else.
Posts: 1,249
Re: Generic Advice on Accoustics

Quote:
brucek wrote: View Post
No, they test speakers in anechoic chambers to remove any room effects, such that they can reveal the speakers true response. This keeps an apples to apples comparison between manufacturers.

brucek

hi guy's, first actual post!! Another reason (just in case anyone didn't already guess) why
manufactures use an anechoic chamber to measure speakers, is so pro-sound installers can weigh up a speakers suitability to a particular application with a certain amount of accuracy.
drf is offline  
Reply

Bookmarks

Tags
accoustics , advice , generic

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










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



Posting Rules  
You may post new threads
You may 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 is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome