Log in
Register
Home
Forums
New posts
Search forums
What's new
Featured content
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
What's new
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Low Earth Orbit
DIY Audio
No compromises front loaded double 18” cab
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
.
Message
<blockquote data-quote="Art Welter" data-source="post: 132153" data-attributes="member: 52"><p>Re: No compromises front loaded double 18” cab</p><p></p><p></p><p>Corner or shelf ports do tune lower than round ducts of the same length and volume, but the central port location does not change the boundary condition, which you seem to be implying: </p><p>"the symmetrically adjacent port arrangement in the middle is like having half the cabinet - one driver and one port - against a wall with the port closest to the wall."</p><p>Although I have not stuck my hand into a BT-218 to confirm, it appears to me the central port wall literally makes the cabinet two enclosures, (saving some weight and hardware cost of two single enclosures) making the cabinet much stiffer, reducing distortion over a shared chamber, and also reducing potential loss of a second driver due to Fb changing if one driver were to fail (turning into a non optimal passive radiator), or be left un-powered.</p><p></p><p>Anyway, Big Port Volume=Good, Tapped Horns=+6dB More Good (per driver) ;^).</p><p></p><p>Art</p></blockquote><p></p>
[QUOTE="Art Welter, post: 132153, member: 52"] Re: No compromises front loaded double 18” cab Corner or shelf ports do tune lower than round ducts of the same length and volume, but the central port location does not change the boundary condition, which you seem to be implying: "the symmetrically adjacent port arrangement in the middle is like having half the cabinet - one driver and one port - against a wall with the port closest to the wall." Although I have not stuck my hand into a BT-218 to confirm, it appears to me the central port wall literally makes the cabinet two enclosures, (saving some weight and hardware cost of two single enclosures) making the cabinet much stiffer, reducing distortion over a shared chamber, and also reducing potential loss of a second driver due to Fb changing if one driver were to fail (turning into a non optimal passive radiator), or be left un-powered. Anyway, Big Port Volume=Good, Tapped Horns=+6dB More Good (per driver) ;^). Art [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Low Earth Orbit
DIY Audio
No compromises front loaded double 18” cab
Top
Bottom
Sign-up
or
log in
to join the discussion today!
