Bookshelf enclosures for CHR 3rd gen - diyAudio
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Old 23rd November 2012, 05:06 PM   #1
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Default Bookshelf enclosures for CHR 3rd gen

Hello everyone! This my very first post on DIYaudio!

I just ordered a pair of 3rd gen CHR 70 to build a pair of bookshelf speakers I will use as surrounds in my HT. They will actualy be installed in bookshelfs so I need to keep the boxes small (12 to 14 in tall) and no rear or side vents.

I saw many projects with the CHR 70 that could work. I would like to here your comments or suggestions if you have done a similar project.

Thanks!
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Old 23rd November 2012, 05:35 PM   #2
chrisb is offline chrisb  Canada
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Originally Posted by Jeff 777 View Post
Hello everyone! This my very first post on DIYaudio!

I just ordered a pair of 3rd gen CHR 70 to build a pair of bookshelf speakers I will use as surrounds in my HT. They will actualy be installed in bookshelfs so I need to keep the boxes small (12 to 14 in tall) and no rear or side vents.

I saw many projects with the CHR 70 that could work. I would like to here your comments or suggestions if you have done a similar project.

Thanks!

well I know that these work quite well and I think fit your requirements

http://frugal-phile.com/boxlib/P10fr...map-231009.pdf


these I've not heard - the slim shady version might still fit your space:

http://frugal-phile.com/boxlib/P10fr...Ken-261111.pdf


Dave is loathe to publish "modeled" performance, but I'm sure he could advise which could be expected to deliver more bass ( I suspect the latter of the 2)
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Old 23rd November 2012, 06:06 PM   #3
chrisb is offline chrisb  Canada
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oh yes, where's my manners? welcome to our crazy little sandbox Jeff
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Old 23rd November 2012, 06:43 PM   #4
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well I know that these work quite well and I think fit your requirements

mMarS-1v0
For the Gen 3 CHR there is also a vented version of this box for more extended bass.... but for surround use, and with the room gain inherent in them being placed on a shelf (attached to a wall, i assume), sealed might be best anyway.

dave
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Old 23rd November 2012, 08:12 PM   #5
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For the Gen 3 CHR there is also a vented version of this box for more extended bass.... but for surround use, and with the room gain inherent in them being placed on a shelf (attached to a wall, i assume), sealed might be best anyway.

dave
You assume correctly, the left side will be on a bookshelf attached to a wall and it is not very deep, maybe 6 in. The right side is on shelf in a bookcase that is against a wall.

Do you have idea of the lower end difference between the sealed and vented versions?

By the way, I looked up planet10 and Frugal-phile : nice work! I love how the full size "onken" style speakers look. If it could fit I would build it!
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Old 23rd November 2012, 11:06 PM   #6
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Originally Posted by planet10 View Post
For the Gen 3 CHR there is also a vented version of this box for more extended bass.... but for surround use, and with the room gain inherent in them being placed on a shelf (attached to a wall, i assume), sealed might be best anyway.

dave
Is that in the paid plan set?

Kyle
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Old 23rd November 2012, 11:44 PM   #7
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Yes.

dave
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Old 23rd November 2012, 11:48 PM   #8
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Do you have idea of the lower end difference between the sealed and vented versions?
Room gsin makes it difficualt to estimate the exact roll-off. The sealed box will start rolling off earlier but slower, the vented will reach lower before rolling off faster. Bump from the room gain comes close to cancelling at least the 1st part of the sealed roll-off, the vented will likely have a bit of a bump-up before it plummets.

Both should easily get you to the 80 Hz needed for HT surrounds.

dave
Attached Images
File Type: gif CHR-70g3-sealed.gif (23.0 KB, 155 views)
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Old 24th November 2012, 01:42 AM   #9
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Yes.

dave
I have wondered that for ages and never bothered to ask you! Added to my Xmas list.

Kyle

Last edited by KyleinCowichan; 24th November 2012 at 01:43 AM. Reason: Spelling
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Old 24th November 2012, 03:09 AM   #10
zman01 is offline zman01  Bangladesh
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Originally Posted by Jeff 777 View Post
I love how the full size "onken" style speakers look. If it could fit I would build it!
Jeff, welcome to diyAudio!

Th P10 Mini-Onken speakers do look smart. They sound good too - the bass is tight and articulate, a pleasure to listen too. And they image very well - the speakers dissapear when listening. After building a pair of CHR-Ken out of curiosity, I was surprised.
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