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Any comments on this University enclosure design?

74.43.11.92
Posted on March 4, 2011 at 16:55:40
LowRedMoon
Audiophile

Posts: 1091
Location: Central PA
Joined: February 28, 2006
 Photobucket

I am referring to the reflex cabinet on the left in the photo.

I build tube amps but do not have experience designing speaker enclosures, and presently do not have time to tinker with doing so. I have a pair of University 312 triaxial drivers and would like to build a cabinet that is likely to perform acceptably for a while.

This design looks very simple and easy to build. I doubt that the manufacturers of University drivers would publish a poor design to compliment their speakers, but I would like to hear some input from those who are experienced with building speaker enclosures regarding this enclosure design.

I am also curious about what to do with the enclosure internally. It looks like it would resonate like crazy without some bracing, or at least a good wad of damping material.

Thanks for taking the time to read this post.

Adam

 

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Very popular among Bars and Dance Halls., posted on March 5, 2011 at 12:03:22
Deckers1
Audiophile

Posts: 8080
Location: Colorado Midwest
Joined: March 20, 2003
 I'm not certain you want to use a triax though. I've seen them with decent woofers like JBL or the like. You need a good low to mid range driver and a tweeter horn for the most modern use of this design. Just place the horn atop the enclosure and it sounds very forward and robust.

 

RE: Any comments on this University enclosure design?, posted on March 5, 2011 at 14:00:09
Paul Joppa
Industry Professional

Posts: 7296
Location: Seattle, WA
Joined: April 23, 2001
 Yes, the cabinet will boogie nearly as much as the speaker. I have a couple boxes from that era, and you can feel and hear the cabinet vibrations easily. I think they just tried to tune the box to have pleasing resonances in those days. :^)

 

RE: Any comments on this University enclosure design?, posted on March 5, 2011 at 15:02:09
ben franchuk
Audiophile

Posts: 118
Joined: October 7, 2008
 I am not sure how much boogieing the cabinet will do,
since I suspect only a few watts of power went in, not
100's like today. You could always use 1 inch plywood
instead.



Lundahl Set 45.

 

That's exactly what I suspect, posted on March 5, 2011 at 16:02:25
LowRedMoon
Audiophile

Posts: 1091
Location: Central PA
Joined: February 28, 2006
 In my mind's ear, I can imagine the sides of those cabinets providing quite a bit of color, if even possibly pleasing. I'm sure that I can tame it down if necessary.
I know that speaker design is more of a science that one would expect, but I am also confident that it is possible to achieve completely enjoyable results with a modest design if the drivers are good, and the 312 drivers sound DAMN good - much better than I expected, even if not entirely accurate by lab standards.

Adam

 

RE: Very popular among Bars and Dance Halls., posted on March 8, 2011 at 10:40:37
LowRedMoon
Audiophile

Posts: 1091
Location: Central PA
Joined: February 28, 2006
 Why not use a triaxial?

Adam

 

RE: Very popular among Bars and Dance Halls., posted on March 8, 2011 at 10:52:41
Deckers1
Audiophile

Posts: 8080
Location: Colorado Midwest
Joined: March 20, 2003
 They may beat themselves apart. It's up to you. If you find a REALLY sturdy design, alrighty then. But most triaxials were made for ceiling mount intercom and theater installs.

There is plenty of full range 15's and 12's that work fine. Most of the best midrange can come through a woofer size cone. But you should do whatever you want if you are building your own stuff. That's the idea to this place!

 

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