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Old 25th November 2011, 08:26 PM   #1
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Join Date: May 2011
Default Small desktop TQWT speaker with TB W3-871SC

Hello diyaudio community,

I had an idea for a small desktop speaker which should work using the TQWT principle:

Click the image to open in full size.
What do you think, will it sound ok?

Technical stuff:
The pipe is nearly 70cm long so it should amplify 122 Hz. I want to get a little bit of bass out of it but I have no idea how I can make the pipe longer without over complicating things.
The slot is 3x100x30mm, is this alright?
I plan using the TangBand W3-871SC.
Is it possible to simulate the enclosure before building it (I'm on a mac)?

Thanks in advance
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Old 26th November 2011, 12:33 AM   #2
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To simulate it you'll need the MJK worksheets. The MathCAD to run them only works in Windoz. I have yet to see if it will run in CrossOver Mac, but if i have to i do own WinXP and VirtualBox is free (althou Parallels is a lot slicker).

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Old 26th November 2011, 06:29 AM   #3
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Thanks, I will simulate it later and post the results (I can probably borrow my brother's latptop and use windows nonetheless).

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Old 26th November 2011, 09:47 AM   #4
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Is it possible to use Akabak or ABEC2 to simulate my speaker design? I don't want to spend money on MathCAD, yet.
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Old 27th November 2011, 04:21 PM   #5
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I just did my first simulation using AkAbak, here is what I did:
Click the image to open in full size.
Can someone check if I did everything right? Here are the TSP of the TangBand:

Shall I add more parameters?

Thanks in advance
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