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Twin Audio Twin Audio is a manufacturer of hand made audiophile tube amplifiers.

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Old 12th March 2010, 07:53 AM   #1
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Default Introduction of T & M Loudspeakers

T & M loudspeakers is new. We want to concentrate on making high quality cabinets from hardwoods. We use Oakwood and we also make some cabinets from MDF and marine ply, but our first priority is to use solid woods. T & M is based in Hong Kong so we work closely with Mark Audio. We use all Mark Audio drivers because the quality and performance is excellent. Twin Audio is our amp business. We match our amplifiers with Mark Audio drivers and also use some of the designs from Mark Audio plans.

We will offer both finished speakers and cabinets as kits. We can build to order. Send us your plan or email your details. We can help you with the build. We supply speakers to all major locations.

Regards,

Tony Wong.

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Old 12th March 2010, 04:19 PM   #2
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Oakwood cabinets which refer to Mark Audio Till70 CHR-70 Bass Reflex bookshelf design.
Thickness: 18 mm

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Box diagram for CHR-70:
http://www.markaudio.com/plan/chr-70/till70
http://www.markaudio.com/sites/all/f...r70-till70.pdf

Last edited by Musik007; 17th March 2010 at 08:48 AM. Reason: To add box design
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Old 17th March 2010, 06:12 AM   #3
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Speaker cabinets in MDF with black piano finishing and veneer in gloss finishing are also available now.

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Oakwood and MDF boxes:
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Old 24th March 2010, 06:10 AM   #4
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This is a bass reflex bookshelf cabinet designed by Mark Fenlon.

Mark recommended to build it in 20 mm oakwood. The dimension of cabinet is 200W x 245D x 310H mm and the port size is 36 dia. x 108 mm long for Alpair 7. There is a good bass performance on Alpair 7 for this cabinet design.

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This cabinet can also be applied to CHR-70.

Last edited by Musik007; 27th February 2013 at 04:31 PM.
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Old 27th March 2010, 03:25 PM   #5
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CHR-70 oakwood cabinets for Mark Audio Till70 Bass Reflex bookshelf design:
Thickness: 18 mm
Dimension: 160W x 190D x 290H mm
Selling Price: USD80/pair
*Prices are for cabinets only.

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Last edited by Musik007; 14th May 2010 at 01:55 AM.
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Old 6th May 2010, 04:14 PM   #6
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This is a new bass reflex bookshelf cabinet for Alpair 12. It was designed by Mark Fenlon.

The cabinets will be available in June.
Attached Images
File Type: jpg AL12BR.jpg (39.1 KB, 194 views)
File Type: png alp-12-gold.png (15.7 KB, 193 views)
File Type: png alp-12-grey.png (16.7 KB, 67 views)
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Old 14th May 2010, 02:08 AM   #7
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This is a good example, one of my customer in Hong Kong tried to add Alpha Core Air-Core Inductor to CHR-70. From his experience, this AWG12, 0.27mH copper foil inductor can give great improvement to the performance of CHR-70 full range driver. Wider sound stage, better high range, sweeter mid range and deeper bass.
Attached Images
File Type: jpg CHR-70.jpg (60.5 KB, 159 views)
File Type: jpg Alpha Coil.jpg (56.5 KB, 267 views)
File Type: jpg Alpha Coil-2.jpg (63.3 KB, 325 views)
File Type: jpg Alpha Coil-3.jpg (66.5 KB, 342 views)
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Old 14th May 2010, 03:05 AM   #8
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This is a baffle step correction circuit. He also has resistors in parallel with the inductor. Could you ask him what total value of resistance he is using?
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Old 14th May 2010, 04:41 AM   #9
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Quote:
Originally Posted by gazzagazza View Post
This is a baffle step correction circuit. He also has resistors in parallel with the inductor. Could you ask him what total value of resistance he is using?
Hello,

Can you provide more information about baffle step correction circuit?
Are the resistors are wired in parallel or series with inductor?
OK.

Thanks.
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Old 14th May 2010, 05:37 AM   #10
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Resistors are in parallel. There are a couple of calculators below which you can play with.

mh-audio.nl - Home

Home of the Edge

Also martin King's site has some links here...

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Quote:
Originally Posted by Musik007 View Post
Hello,

Can you provide more information about baffle step correction circuit?
Are the resistors are wired in parallel or series with inductor?
OK.

Thanks.
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