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New Lowther Drivers.

I have ordered a pair of the new, improved Lowther DX3. The improvements consist of changing the suspension from a rolled-out type to a rolled-in type, putting a rolled edge on the whizzer cone to stiffen the edge and eliminate the midrange peak called "Lowther shout". They also offer a new phase plug that looks like a "light bulb with holes" that is controversial. Bullet style phase plug is still standard. They are sending me both types for evaluation.
I am currently building a set of Voigt Pipes enclosures, which I hope to get done before the drivers arrive. I am following the plans from the Lowther Club of Norway website.
I'm very excited about this, because I could use some extra efficiency in my speakers. If anyone has built these Lowther Voigt Pipes before and can offer some advice, it would be appreciated. It is not really hard, but sometimes a simple tip can make the difference. BTW, Doug(Grandpad), you really helped me to make up my mind on buying these drivers in the last thread I put up on this topic. As always, I will give reports on results, just in case anyone is interested. Comments?
twl

Showing 3 responses by dekay

dekay's avatar
dekay
5,346 posts
 
TWL:

Here are a couple of chat rooms which may be of help:

http://f18.parsimony.net/forum31999/

http://members.aol.com/cycarpio/home.htm (BBS portion)

The second site is mainly in Japanese, but I had no problem asking and receiving info in English (Zuki and a friend supplied the cabinet plans for a vintage pair of Stephens 8" drivers), these guys/gals are great. There is another site in Italy, but I have lost its address (perhaps you can locate it)?

Sorry no cabinet design tips from me (as you know I am new to this), but looking forward to your take on the "new" Lowther's.
dekay's avatar
dekay
5,346 posts
 
TWL: Had I suspected this of you earlier on last week, I would have picked up and shipped, gratis, a few dozen sound effects LP's that I stumbled across @ a local thrift (many still sealed), just to get on your good side (may need some help/ good advise on my single driver project down the line:-), though sub 40 Hz is really required to properly hear all of the "kids in the pool" on the "toilet flushing" track. LOL. You still here Kelly, (how's that for a run-on sentence)?
dekay's avatar
dekay
5,346 posts
 
Albert: I had the pleasure of attending a local "single driver" get together a few weeks back (hosted by Thor over @ the single driver website). I arrived rather late and did not get to listen to everything, but the overall coherency of sound of the designs that I did audition was quite amazing, as was the separation of voices and instruments.

Yes, @ 47 years old I remember the sound of many radios and stereo consoles that used single drivers or coaxial/triaxial speakers with a single point source. My father had a pair of Stephens Trusonic coaxial speakers (big ones) mounted in the ceiling of our basement rumpus/game room. Oddly enough my first single driver project may be based on a smaller version (8") of the Trusonic's.

Bruce Edgar was @ the event, which also got me thinking of some of his smaller horn designs (don't think that our room is big enough though).
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