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TABAQ TL for Tang Band
TABAQ TL for Tang Band
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Old 7th January 2020, 11:02 AM   #2571
Bjohannesen is offline Bjohannesen  Denmark
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Hi, the 4FE32 can be used in the original TABAQ.

The drawing in post 2538 shows:

1 - The original port layout, which is in fact a little too long.
2 - The correct port lyaout, as it should be.

The 4" version of TABAQ is for drivers with Fs of about 75 Hz and Qts betseen 0.35 and 0.4. The cross section should be inceased a little, now 154 cm2. The port is the same (as 2. above). Stuffing 63 gram - 112 gram.

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Bjørn
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Old 11th January 2020, 08:07 PM   #2572
mngnt is offline mngnt  Canada
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TABAQ TL for Tang Band
A question - is the idea proposed in the attached picture feasible? I believe there are 2 considerations:

1- Can the footprint be triangular, if the same cross-sectional area as the rectangular version is maintained?
2- Will the ceiling & wall significantly (and/or negatively) impact the speaker response?

TABAQ TL for Tang Band-2020-01-11-12_59_22-window-jpg
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Old 11th January 2020, 11:24 PM   #2573
Bjohannesen is offline Bjohannesen  Denmark
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The footprint can be any shape as long as the cross section (area in cm2) is the same.

The bass will get a lift when placing the cabinet like you want. But the line is well stuffed so I do not expect the bass to be too dominanting. You could add some stuffing if needed.
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Old 11th January 2020, 11:31 PM   #2574
silasmellor is offline silasmellor  Denmark
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TABAQ TL for Tang Band
why not flip both around so the drivers are further apart, might be better for stereo separation.
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Old 11th January 2020, 11:46 PM   #2575
CraigSu is offline CraigSu  United States
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Quote:
Originally Posted by silasmellor View Post
why not flip both around so the drivers are further apart, might be better for stereo separation.
I concur. In addition that will place the port slots away from the corners. If left in the corners they will provide boundary reinforcement resulting in potentially unwanted bass boost (see Bjorn’s comment above).
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Last edited by CraigSu; 11th January 2020 at 11:49 PM.
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Old 12th January 2020, 12:22 AM   #2576
mightym is offline mightym  United States
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It looks to me from the picture mngnt posted, that the drawing isn't to scale.

I would concur with the recommendation of putting the vent's to the center, as the output from them is low frequency, and that tends to be non directive in nature as well.

You cannot discount the placement reinforcing the low frequency from both the driver, and vent. These are designed to be placed against a wall, but the corner will add an additional 3Db of reinforcement...

Bjorn knows his design, I would imagine that his comment on increasing the stuffing is cogent...

The maintained CSA would result in a box 20.1 CM each direction in the rear, and 28.4 CM on the face ( equilateral triangle..) Shouldn't be a problem to fit the driver...
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Old 12th January 2020, 12:44 AM   #2577
mngnt is offline mngnt  Canada
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TABAQ TL for Tang Band
Thanks for the replies all!

Yeah the drawing was just a quick sketch to demonstrate the idea, good call on flipping them with drivers on the outside.

I'll model them in Solidworks to get the correct size and shape (didn't want to spend the time if it didn't make sense from a design perspective). This is the 'far' wall of my kitchen, so the angle will be a compromise between optimal listening angle and what's feasible physically.
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Old 12th January 2020, 07:54 AM   #2578
portisheader is offline portisheader
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Hi, I plan to start for a Tabaq build with a 3" driver.
What I wanna ask you is, other than stuffing with polyfill, whether it is ok to glue some 8 to 10 mm felt inside on the walls away from the port.
Thank you
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