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TC2+ in 60 liters sealed box
TC2+ in 60 liters sealed box
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Old 18th March 2005, 07:28 AM   #1
ZACC is offline ZACC  Sweden
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Default TC2+ in 60 liters sealed box

Hi

I've been simulating a bit and find this to be one way to go.
Unibox says that Qtc is 0,694 when fully filled with damping.

Now to my question: The response is 10dB down at 20Hz, is that too much? 2 boxes are going to be built, placed in the corners behind my front speakers.

I've only built a bassreflex sub before, with F3 around 18 Hz, so maybe you understand my worries...
The sub's are going to be used in my HT, the room is 22 m².

So, should I go 60 L sealed or about 100 L bassreflex?

Z
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Old 18th March 2005, 09:39 AM   #2
Al Garay is offline Al Garay
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What about doing passive radiator (PR) instead? Should give you better response at 20Hz in a smaller box similar to the AV12.
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Old 20th March 2005, 07:22 AM   #3
Kluminati is offline Kluminati  Canada
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10DB down from 20hz seems like a lot maby while your buying everything might want to pick up an equilizer to fix that and flatten out the curve or even better go for a bigger box if you want to get lower.
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Old 20th March 2005, 05:31 PM   #4
454Casull is offline 454Casull  Canada
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Room gain will help you out. Depending on your room, it might be 6-10dB or more at 20Hz.
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Old 20th March 2005, 11:47 PM   #5
mike.e is offline mike.e  New Zealand
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For HT id consider my SPL requirements. IF they were low,Id go sealed and some room gain will help. Otherwise id go ported,and consider a PR if required,as small box,high power,low tuned subs often require them.
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Old 21st March 2005, 04:37 PM   #6
simon5 is offline simon5  Canada
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10 dB down at 20 Hz versus what? 100 Hz? If yes, it's too much for me, but maybe not for you. I'm 5 dB down at 20 Hz versus 100 Hz.
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Old 22nd March 2005, 01:58 AM   #7
mike.e is offline mike.e  New Zealand
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Also consider that a tiny sealed box with a radiator doing high excursions will result in large amounts of 2 HD , since the driver is a low distortion one id consider this issue also
see linkwitzlab.com
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Old 1st April 2005, 05:00 PM   #8
ZACC is offline ZACC  Sweden
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Thanks for all input.

I'm 10 dB down at 20 Hz vs. 100 Hz.
Now I'm thinking of buying a Thommessen Subway X crossover
TC2+ in 60 liters sealed box


Level Bass-EQ
The amount of bass boost is adjustable up to +6dB.

Freq Bass-EQ
The bass boost center frequency is adjustable from 20Hz-40Hz

Maybe this is one way to go...

Z
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