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Old 5th October 2004, 09:04 PM   #11
weidok is offline weidok  Netherlands
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Ok so i just ordered the speakers "Fostex"FE 167 E
form germany..
I'll use the demensions from BOb's FT 1600 mk II
the port will be round 3 " and about 41/4" long
Instead of using a pvc tube i am thinking using wooden rings
to eleminate vabrations of a tube
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Old 5th October 2004, 10:10 PM   #12
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Quote:
Originally posted by weidok
Ok so i just ordered the speakers "Fostex"FE 167 E
form germany..
I'll use the demensions from BOb's FT 1600 mk II
the port will be round 3 " and about 41/4" long
Instead of using a pvc tube i am thinking using wooden rings
to eleminate vabrations of a tube

Remember that those are outside dimensions and assume 3/4" material. There is also a 1/4" cement board lining. The actual pipe dimensions are 40x8.5x8.5.

Bob
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Old 6th October 2004, 07:30 PM   #13
weidok is offline weidok  Netherlands
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Bob,

Cement board can you explain that i really don't know what that is ??

Must i double the top ...

And are other users with the Fostex Fe 167 E or not ???

Please let me (us) know about and reply on this post ?
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Old 6th October 2004, 07:44 PM   #14
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Cement board here in the US is a ceramic based material 1/4" thick that is used in (typically) home construction to put tile on, such as bathrooms, kitchens, etc.. I've used it in building TLs and highly recommend it to reduce cabinet vibrations. Other materials can be substituted if it is the same thickness, or you account for the thickness in your internal volume. Granite tile, ceramic tile or other types of floor tile can be used. A good construction adhesive can be used to attach it to the inside of the cabinet panels.
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Old 6th October 2004, 11:41 PM   #15
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Quote:
Originally posted by weidok
Bob,

Cement board can you explain that i really don't know what that is ??

Must i double the top ...

And are other users with the Fostex Fe 167 E or not ???

Please let me (us) know about and reply on this post ?
Timn8ter has it right. The brand I use is "Hardi-Backer", though this information is probably of little use outside North Amaerica. I used to recommend ceramic tiles, but the Hardi-Backer is much easier to cut to size.

Yes, double the top and line it with cement board, tile, whatever. You will be amazed at the difference this makes in the amout of vibration -- and sound -- coming from a thin top panel.

Bob
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Old 7th October 2004, 12:48 AM   #16
Luke is offline Luke  New Zealand
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Cement board seems very brittle, can you cut it with normal table saw etc. What about glue, is PVA ok for this stuff?
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Old 7th October 2004, 02:06 AM   #17
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Sounds like it could be "beton-multiplex". It is available in a "bouwmarkt". It is a lot more expensive than normal multiplex.
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Old 7th October 2004, 04:26 AM   #18
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Quote:
Originally posted by Luke
Cement board seems very brittle, can you cut it with normal table saw etc. What about glue, is PVA ok for this stuff?
Get a diamond abrasive saw blade for your table saw. Gets dust everywhere, but cuts nicely.

I use Liquid Nails panel adhesive.

Bob
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Old 7th October 2004, 04:32 AM   #19
Luke is offline Luke  New Zealand
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Thanks Bob

Diamond abrasive saw, ouch that sounds spendy
Might try find a diamond jigsaw blade

cheers arthur
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Old 7th October 2004, 12:09 PM   #20
peterr is offline peterr  Netherlands
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Quote:
Originally posted by Leeuwarden
Sounds like it could be "beton-multiplex". It is available in a "bouwmarkt". It is a lot more expensive than normal multiplex.
It is certainly not "beton-multiplex". It is more like fermacell which is used as an alternative to waterproof "gipsplaat". You can buy fermacell at the professional building material shops like "Bouwmaat" not sure about diy shops.
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