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
General Discussion
Two sub woofers to tame low frequency problems?
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="PsyCLown" data-source="post: 852573" data-attributes="member: 12654"><p>Incorrect.</p><p>The roll off on a sub is not a brick wall where it hits 25Hz and then suddenly from 24Hz and lower there is nothing playing.</p><p>Adding additional subwoofers increases the max possible SPL provided, therefore provided your listening level remains the same you can get a flat response to a lower frequency.</p><p></p><p>So for example lets say you have a single 12" subwoofer with a f3 of 35Hz. You add another 12" and the f3 can become 32Hz.</p><p></p><p>Another thing to consider and think about is the fact that when there are 2x 12", less excursion is needed to move the same amount of air. So with an infinite baffle subwoofer build for example, if you have a single 18" you will run out of steam very quickly and usable SPL levels of say 25Hz will not be much. You might only have usable output to 35Hz. Once you add a few more 18" you can easily get usable output to 20Hz or lower.</p><p></p><p></p><p>Adding an additional subwoofer and additional power can increase the max SPL by 6dB.</p></blockquote><p></p>
[QUOTE="PsyCLown, post: 852573, member: 12654"] Incorrect. The roll off on a sub is not a brick wall where it hits 25Hz and then suddenly from 24Hz and lower there is nothing playing. Adding additional subwoofers increases the max possible SPL provided, therefore provided your listening level remains the same you can get a flat response to a lower frequency. So for example lets say you have a single 12" subwoofer with a f3 of 35Hz. You add another 12" and the f3 can become 32Hz. Another thing to consider and think about is the fact that when there are 2x 12", less excursion is needed to move the same amount of air. So with an infinite baffle subwoofer build for example, if you have a single 18" you will run out of steam very quickly and usable SPL levels of say 25Hz will not be much. You might only have usable output to 35Hz. Once you add a few more 18" you can easily get usable output to 20Hz or lower. Adding an additional subwoofer and additional power can increase the max SPL by 6dB. [/QUOTE]
Insert quotes…
Verification
Post reply
Audio and Video Talk
General Discussion
Two sub woofers to tame low frequency problems?
Top