Designing a cabinet for Mark Audio Alpair 7.3 - Page 3 - diyAudio
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Old 19th January 2012, 06:15 PM   #21
von Ah is offline von Ah  United States
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Awesome idea.
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Old 19th January 2012, 06:28 PM   #22
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Neat, file those edges.
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Old 26th January 2012, 10:52 AM   #23
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Thought on power them, for a super clean signal could a single Hypex AS2.100 be used?

AS2.100

Have this sealed in a box between the speakers, and run a wire to each driver?

Nice to have the DAC and power amp all in one place, is the active crossover needed?
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Old 26th January 2012, 04:42 PM   #24
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Nice looking design. I will echo the sentiments of those before and say CNC would be an awful waste. What I call "Bendy plywood" would work a treat, otherwise, if you are a glutton for punishment you would cut kerfs in regular sheet plywood to achieve the bending properties / curve required. Its not difficult but is time consuming. The tops are easy enough to shape.
The only other concern would be calculating / measuring the volume of enclosure and even that would not be too much trouble getting an estimate of.

I did something around two years ago, a stand mount two way speaker, roughly the shape of an elongated guitar body and used kerfing.
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Old 11th April 2012, 12:41 PM   #25
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Been researching materials and came across an interesting product.

1mm solid wood backing
7 layer ply (10mm)
4mm solid wood 'veneer'

They are engineered solid wood floor boards. I plan on glueing them together onto an 3mm mdf backing to ensure they lie flat an them power sand the finish off.

I was looking at them for building a pair of the Pensils, but have decided to do a test mockup using the Alpair 7.3 and one of Planet 10's small bass reflex cabinets.

As they were surplus to the flooring shop and a little scuffy I got them for 10 a board. Two should be enough to make a pair.

I also plan on putting round lippings on the corners......a sketch up picture to follow.

Images below:
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Old 11th April 2012, 02:58 PM   #26
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Sketchup image

Click the image to open in full size.
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Old 23rd October 2012, 05:01 PM   #27
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Having finished the above cabinet, its time to start thinking about the next.


Has anyone seem an Alpair in a cabinet like this.

Click the image to open in full size.


It would be a challenging project....

Have the 7.3 sat in a turned coopered bowl, on top of 2xlarge subs, Peerles XLS 10" for example. With a curved plywood skin, similar to the B&W 800.

Thoughts?
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Old 24th October 2012, 12:27 AM   #28
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Bernie is having me design a 20 sided tapered polygonal cabinet that is essentially a steam-punk version of the B&W mid pod.

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Old 24th October 2012, 12:35 AM   #29
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Any pics dave?

How best to model this?
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Old 24th October 2012, 12:52 AM   #30
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Quote:
Originally Posted by Studio Au View Post
Any pics dave?
Only a scan of Bernie's sketch.

Click the image to open in full size.

Quote:
How best to model this?
It is going to be a dMar-Ken7.3 variation, modeling is done.

dave
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