The WIBAQ: TABAQ Design with Betsy K - Page 3

Dumbledog · 8th January 2013, 10:47 PM

Thanks for the cutting dimensions. When I get home I will go onto sketchup and verify the dimensions. I'm away from home now. I also have a wood shop at my disposal (with a cnc machine) incase Home Depot/lowes gives me trouble. I also know people at home depot, so I could always make sure they are there when I go.

glt · 9th January 2013, 12:22 AM

Quote:

Originally Posted by RonVinyl

His dimensions were all internal dimensions since the plywood size is nominal. I will be using 3/4". Here are the dimensions for each piece that I came up with. Do they match up with your cuts glt?

Front: 11" x 43 3/8"
Back: 11" x 46 1/2"
Side: 17 3/4" x 46 1/2"
Top: 11" x 16 1/4"
Bottom: 11" x 17"
Baffle: 11" x 3 1/4"

Front is 44 1/8 as drawn because it is flush with the sides? (don't know why I wrote 15 3/8 :-))

Dumbledog · 9th January 2013, 01:35 AM

The side panels (x2) are each 17 3/4" by 46 1/2". The front is 11" by 44 1/8". The back is 11" by 46 1/2". The top is 11" by 16 1/4". The bottom is 11" by 17". The port piece is 11" by 3 1/4". So Ron, your dimensions were correct minus the front baffle.

RonVinyl · 9th January 2013, 11:10 AM

Quote:

Originally Posted by Dumbledog

The side panels (x2) are each 17 3/4" by 46 1/2". The front is 11" by 44 1/8". The back is 11" by 46 1/2". The top is 11" by 16 1/4". The bottom is 11" by 17". The port piece is 11" by 3 1/4". So Ron, your dimensions were correct minus the front baffle.

Thanks for the correction, I have updated my design/documents on my end.

RonVinyl · 9th January 2013, 11:52 AM

Do we have the following information on the Betsy-K:

Impedance of the voice coil (Lvc)
Width of the baffle in inches (Wb)

tubo · 9th January 2013, 01:03 PM

What kind of stuffing are you guys planning to use and how much?

tubo · 9th January 2013, 01:03 PM

Stuffing materials i mean

RonVinyl · 9th January 2013, 01:56 PM

You need 1lb per cubic foot of damping material in this enclosure.
You need to put damping in the top 2/3's of the enclosure.

Here is an option: Acousta-Stuf Polyfill 1 lb. Bag 260-317

11x16.25x45 = 8043.75 cubic inches
8043.75/1728 = 4.654947917 cubic feet
4.654947917 = 1.551649306 in thirds

1.551649306*2 = 3.103298612

So you need roughly 3lbs of damping material.

tubo · 9th January 2013, 02:16 PM

Thanks ronvinyl

Dumbledog · 9th January 2013, 02:39 PM

On the PDF of the design the stuffing is listed. About 1.8 pounds in the upper two thirds of each enclosure.
As for the lvc, that I don't know.

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8th January 2013, 10:47 PM	#21
Dumbledog diyAudio Member Join Date: Nov 2012 Location: Western Massachusetts	Thanks for the cutting dimensions. When I get home I will go onto sketchup and verify the dimensions. I'm away from home now. I also have a wood shop at my disposal (with a cnc machine) incase Home Depot/lowes gives me trouble. I also know people at home depot, so I could always make sure they are there when I go.

9th January 2013, 01:35 AM	#23
Dumbledog diyAudio Member Join Date: Nov 2012 Location: Western Massachusetts	The side panels (x2) are each 17 3/4" by 46 1/2". The front is 11" by 44 1/8". The back is 11" by 46 1/2". The top is 11" by 16 1/4". The bottom is 11" by 17". The port piece is 11" by 3 1/4". So Ron, your dimensions were correct minus the front baffle.

9th January 2013, 11:52 AM	#25
RonVinyl diyAudio Member Join Date: Jan 2013	Do we have the following information on the Betsy-K: Impedance of the voice coil (Lvc) Width of the baffle in inches (Wb)

9th January 2013, 01:03 PM	#26
tubo diyAudio Member Join Date: Apr 2007	What kind of stuffing are you guys planning to use and how much?

9th January 2013, 01:56 PM	#28
RonVinyl diyAudio Member Join Date: Jan 2013	You need 1lb per cubic foot of damping material in this enclosure. You need to put damping in the top 2/3's of the enclosure. Here is an option: Acousta-Stuf Polyfill 1 lb. Bag 260-317 11x16.25x45 = 8043.75 cubic inches 8043.75/1728 = 4.654947917 cubic feet 4.654947917 = 1.551649306 in thirds 1.551649306*2 = 3.103298612 So you need roughly 3lbs of damping material.

9th January 2013, 02:16 PM	#29
tubo diyAudio Member Join Date: Apr 2007	Thanks ronvinyl

9th January 2013, 02:39 PM	#30
Dumbledog diyAudio Member Join Date: Nov 2012 Location: Western Massachusetts	On the PDF of the design the stuffing is listed. About 1.8 pounds in the upper two thirds of each enclosure. As for the lvc, that I don't know.