Mark's new Alpair 12

[planet10]

Diggression into cabinet resonances moved http://www.diyaudio.com/forums/marka...nsil-12-a.html

dave

[markaudio]

H, Tony,
Thanks for posting the pics but best moved to Pencil 12 thread. Hope this is OK.
Thanks
Mark.

[CLS]

The golden cones in these pictures looks lighter. Is it exposure, or new formula for the materials?

[markaudio]

Hi Guys,
Almost done working through various info requests.

Re Alpair 12's off axis performance - take a look at the MJ Magazine Alp12 test and review. They compared to Alp12 to 2 other Japanese FR drivers:

http://www.markaudio.com/news/2010-03/japanese-review

Here's the graphs showing what the Alpair 12 achieves and can be compared to Diatone's P-610. Bear in mind the Diatone is an excellent unit but is more typical of the type of off-axis performance to be expected from an FR driver of this size and design. If you want full range output from the Diatone, it needs to be positioned on-axis.

I'm pleased with the current Alp12. It's doing what I designed it to achieve. In respect of on-off axis, it's offering allot of set-up flexibility. You'll get full range or close to full range output from zero to 15 degrees. 30 degrees is also stable and well controlled into the high range.

I've briefly mentioned on-off axis on this thread:

Alpair 10 - Generation 2 - sneak peek

Got to dash,

Cheers

Mark.

[imagios]

Hello Everybody,
Im thinking to get two of these drivers, but I dont see any nice encloasure for them, is there some where a plan for a nice box? TQWL or Horn, or something that would bring a nice 30hz to 20khz performance?

[planet10]

Woden Design

dave

[imagios]

thanks for the info Dave, it seem no one has builded it yet,... could be a lottery for me to start with that, with so little experience I have,... especialy the damping would be riddle for me. But the driver seem damn interessting to me