Mark Audio CHR-70 Application Thread - Page 80 - diyAudio
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Old 20th February 2012, 01:54 PM   #791
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It's speaker cloth stretched over some 1/4" bb plywood frames. I used spray glue for sticking them down and then brushed on silicone after trimming to keep the edges of the fabric from fraying. The back side of them looks far rougher than the front. They are held on with magnets sunk into the baffle.

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Old 20th February 2012, 01:57 PM   #792
Squeak is offline Squeak  Denmark
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Are the frames prefab or did you make them yourself? I've been thinking about doing something similar myself but wasn't able to find suitable rings.
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Old 20th February 2012, 02:48 PM   #793
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I cut them myself with my router and jasper jig. It was quite easy, and the fit was perfect. Getting the fabric stuck on the backside evenly is the hardest part. You just have to patiently work it into place. I'll see if I can find some construction pics later.

Kyle
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Old 20th February 2012, 04:17 PM   #794
GM is offline GM  United States
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FWIW, embroidery hoops makes making round grills a fairly trivial procedure for the time and/or woodworking challenged.

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Old 20th February 2012, 04:34 PM   #795
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by KyleinCowichan View Post
By general consensus I mean that I saw Chrisb mention that in a thread.

Kyle

he's likely just repeating something he read on the inter-webs
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Old 20th February 2012, 04:37 PM   #796
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;-)
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Old 20th February 2012, 05:09 PM   #797
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Quote:
Originally Posted by GM View Post
FWIW, embroidery hoops makes making round grills a fairly trivial procedure for the time and/or woodworking challenged.

GM
Nice! That's a great tip, thanks!

Scott
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Old 27th February 2012, 12:23 PM   #798
fakeout is offline fakeout  Canada
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Does anyone know what the highest frequency is for the generation 1 and 2 of the Mark Audio CHR-70? I'd like a full range speaker without having the higher frequencies "piercing" my ears (fatiguing).
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Old 27th February 2012, 12:41 PM   #799
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Anyone used Alpair CHR-70 as midrange (250-10k) in a 3 way system ? sensivity is not a problem since i use minidsp (tri amp) and mid amp is 150w rms.
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Old 28th February 2012, 02:15 AM   #800
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just to show you what I did with my chr-70. in-cielling suround speaker for my HT, match with a cheap dayton ND20. the CHR is full range and the tweeter is cut with only a 1uF cap. "very good result". I luv it.

Click the image to open in full size.
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