Alpair 12 - also out of the bag - Page 3

markaudio · 20th October 2009, 12:56 AM

Hi,
Bob Reimer at CSS (Creative Sound Solutions -Vancouver) will receive a shipment later next week. Selling price is likely to be around $200 USD per driver.

Re the Xmax, I've more up to date info. The 1 way = 9.0-mm.

The 12-mm total was given originally for guys who wanted to run the Alp12 as a woofer, my recommendation being 6-mm for 1 way at near constant high loads.

If you're planning to use full range then work on 9-mm.

Take a look page 3 of the Alp12 in the Markaudio section. There's some interesting details on this driver's suspension:

Mark's new Alpair 12

Cheers,

Mark.

jleaman · 20th October 2009, 01:50 AM

These drivers look pretty dam sexy.

markaudio · 20th October 2009, 04:00 AM

Hi Guys,
Bringing you up to date, the T/S shown on the first page of this thread was from measured from the Pre-production sample, aimed for horn use. A number of DIYer's contacted me about producing a version suitable for a larger choice of box designs.

I wanted to produce 2 versions (horn) and (wide use). Sadly, the economic situation has made this a non-starter. So the production version has been tweaked (thanks to help from Matsubara san) to make it more suitable for a variety of box concepts.

Here's the T/S Mass Production data.

Revc= 7.000 Ohm
Fo= 46 Hz
Sd= 143.14 Cm
Vas= 22 Ltr
Cms= 0.750 MM/N
Mmd= 14.886 g
Mms= 15.871 g
BL= 8.752 T.M
Qms= 1.454
Qes= 0.420
Qts= 0.327
Levc= 0.058m H
No= 0.493 %
SPLo= 89.3 dB
X Max= 9.0-mm 1 way
Pwr cont= 50 watts

Apologies for any confusion. More can be read on the Markaudio thread:

Mark's new Alpair 12

Cheers,

Mark.

markaudio · 23rd November 2009, 03:48 AM

Hi Guys,
New cabinet design for the Alpair 12.

Here's the link for a simple to build - Damped Air Coupler design. The new thread will feature the build and tuning process.

Alpair 12 - Damped Air Coupler box design

Thanks

Mar.

20th October 2009, 01:50 AM	#22
jleaman diyAudio Member Join Date: Apr 2002 Location: Nanaimo	These drivers look pretty dam sexy. __________________ Routinely DIYers opt to make themselves a “passive preamp” - just an input selector and a volume control. Nelson Pass 2008

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20th October 2009, 12:56 AM	#21
markaudio diyAudio Member Join Date: Nov 2008	Hi, Bob Reimer at CSS (Creative Sound Solutions -Vancouver) will receive a shipment later next week. Selling price is likely to be around $200 USD per driver. Re the Xmax, I've more up to date info. The 1 way = 9.0-mm. The 12-mm total was given originally for guys who wanted to run the Alp12 as a woofer, my recommendation being 6-mm for 1 way at near constant high loads. If you're planning to use full range then work on 9-mm. Take a look page 3 of the Alp12 in the Markaudio section. There's some interesting details on this driver's suspension: Mark's new Alpair 12 Cheers, Mark.

20th October 2009, 04:00 AM	#23
markaudio diyAudio Member Join Date: Nov 2008	Hi Guys, Bringing you up to date, the T/S shown on the first page of this thread was from measured from the Pre-production sample, aimed for horn use. A number of DIYer's contacted me about producing a version suitable for a larger choice of box designs. I wanted to produce 2 versions (horn) and (wide use). Sadly, the economic situation has made this a non-starter. So the production version has been tweaked (thanks to help from Matsubara san) to make it more suitable for a variety of box concepts. Here's the T/S Mass Production data. Revc= 7.000 Ohm Fo= 46 Hz Sd= 143.14 Cm Vas= 22 Ltr Cms= 0.750 MM/N Mmd= 14.886 g Mms= 15.871 g BL= 8.752 T.M Qms= 1.454 Qes= 0.420 Qts= 0.327 Levc= 0.058m H No= 0.493 % SPLo= 89.3 dB X Max= 9.0-mm 1 way Pwr cont= 50 watts Apologies for any confusion. More can be read on the Markaudio thread: Mark's new Alpair 12 Cheers, Mark.

23rd November 2009, 03:48 AM	#24
markaudio diyAudio Member Join Date: Nov 2008	Hi Guys, New cabinet design for the Alpair 12. Here's the link for a simple to build - Damped Air Coupler design. The new thread will feature the build and tuning process. Alpair 12 - Damped Air Coupler box design Thanks Mar.

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