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CSS Trio8 music subwoofer implementation?
CSS Trio8 music subwoofer implementation?
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Old 20th July 2009, 11:00 AM   #1
Brisso57 is offline Brisso57  Australia
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Default CSS Trio8 music subwoofer implementation?

Can anyone share their experience with the CSS Trio8 driver as a music subwoofer?
What alignment?
What cabinet volume?
What lowest frequency is practically achievable?

(Here's a link to CSS's data: www.creativesound.ca/details.php?model=TRIO8)

Thanks

Doug
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Old 21st July 2009, 01:16 AM   #2
mwmkravchenko is offline mwmkravchenko  Canada
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CSS Trio8 music subwoofer implementation?
Default This might interest you Doug

I'm almost ready to post the design. Give me about a week and it will be up with measurements.


http://www.diyaudio.com/forums/showt...60#post1878760

Mark
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Old 21st July 2009, 01:30 AM   #3
planet10 is offline planet10  Canada
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CSS Trio8 music subwoofer implementation?
I have 4 here. Initial thots are to put them in a pair of push-push sealed with a bit of boost.

dave
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Old 21st July 2009, 02:36 AM   #4
Brisso57 is offline Brisso57  Australia
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Quote:
Originally posted by planet10
I have 4 here. Initial thots are to put them in a pair of push-push sealed with a bit of boost.

dave
Sealed. OK.
What cabinet volume would that be?

I have a pair of really strong (& immaculate) retro-style sealed ply cabinets of approx 27L each. (The volume can be reduced by including filler blocks, of course.)
I was thinking of a solo sealed unit. If it worked well, I could make a second.

Doug
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Old 21st July 2009, 02:37 AM   #5
Brisso57 is offline Brisso57  Australia
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Default Re: This might interest you Doug

Quote:
Originally posted by mwmkravchenko
I'm almost ready to post the design. Give me about a week and it will be up with measurements.


http://www.diyaudio.com/forums/showt...60#post1878760

Mark
Mark,

I can wait a week. :-)

Doug
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Old 21st July 2009, 07:55 AM   #6
planet10 is offline planet10  Canada
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CSS Trio8 music subwoofer implementation?
Quote:
Originally posted by Brisso57
Sealed. OK.
What cabinet volume would that be?
After posting that, i loaded up the T/S... to get to Bessel Q (~.58) took just over 50 litres. So with damping anything from 40-some to 70 litres for a pair of drivers would probably do.

50 litres also works ported -- tuned somewhere between 20 & 30 Hz. 20 hz port gets kinda long, 30 looks about right for a high aspect slot port -- i might see how that works too.

dave
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Old 21st July 2009, 10:39 AM   #7
bjorno is offline bjorno  Sweden
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Quote:
..What alignment? What cabinet volume? What lowest frequency is practically achievable?..
Hi,

A T-TQWT in about 40-60 L is possible with a FR stretched down towards 20 Hz. See the simulations: 1(3)-3(3).

b

1(3)
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Old 21st July 2009, 10:40 AM   #8
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2(3)
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Old 21st July 2009, 10:42 AM   #9
bjorno is offline bjorno  Sweden
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3(3)
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Old 21st July 2009, 04:14 PM   #10
bjorno is offline bjorno  Sweden
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Another larger T-TQWT variant :

b

1(1)
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