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Old 2nd May 2012, 11:59 AM   #1
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Default Mini Onken dampening

I'm building a pair of Mar-Kel70's with Generation 1 Mark Audio CHP-70.
The drawing states that all internal panels should be lined with 12 mm wool felt, 19 mm poly-fluff batting or 25 mm fibreglass.

I attached 12 mm wool felt to the insides of:
- Floor
- Roof
- Back panel
- Sides.

On images of complete flatpacks, I saw images where the insides of these panels are lines:
- Floor
- Roof
- Baffle
- Sides for 3/4, where the last part before the ports were not lined.

Not the back banel is lined; I thought for reducing standing waves etc. this is the single most important panel to brace...

What is correct? Really all panels, my idea of all panels or the ones I saw on an image?
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Old 2nd May 2012, 07:27 PM   #2
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Bart-Jan View Post
I'm building a pair of Mar-Kel70's with Generation 1 Mark Audio CHP-70.
The drawing states that all internal panels should be lined with 12 mm wool felt, 19 mm poly-fluff batting or 25 mm fibreglass.

I attached 12 mm wool felt to the insides of:
- Floor
- Roof
- Back panel
- Sides.

On images of complete flatpacks, I saw images where the insides of these panels are lines:
- Floor
- Roof
- Baffle
- Sides for 3/4, where the last part before the ports were not lined.

Not the back banel is lined; I thought for reducing standing waves etc. this is the single most important panel to brace...

What is correct? Really all panels, my idea of all panels or the ones I saw on an image?

It does get to be a bit of a logistics challenge with the smaller enclosures, but I always line all interior panels, avoiding occlusion of the internal opening of port slots with an approx 12-15mm margin.
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Old 2nd May 2012, 08:28 PM   #3
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What Chris said.

As well a less dense pad can be attached to the holly brace (the side that is on the centre hole -- and covering the holes).

dave
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Old 3rd May 2012, 06:57 AM   #4
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Guys, thanks for the replies!
So lining of the back pannel and also the baffle are needed? (In addition to top, bottom and sides).
Luckily the first cabinet I closed down has almost all of this lining in. Only the baffle and the brace are still 'naked'.
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Old 3rd May 2012, 07:41 AM   #5
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brace is optional

dave
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Old 3rd May 2012, 05:13 PM   #6
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by planet10 View Post
brace is optional

dave

lining thereof , or in general?
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Old 3rd May 2012, 06:54 PM   #7
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Lining thereof. .

dave
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