TABAQ TL for Tangband

Just assembled a TABAQ box variant with dual Tymphany TPY03W012o 12-ohm drivers in parallel. Xmax is rated at 2.5mm, which is plenty with dual drivers rated at 30W each.

Here are pics of the prototype:

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.


Dimensions are more or less the same as the Tabaq box, with a second driver cutout about 104 mm above the first.
 
Just assembled a TABAQ box variant with dual Tymphany TPY03W012o 12-ohm drivers in parallel.
Dimensions are more or less the same as the Tabaq box, with a second driver cutout about 104 mm above the first.

I think for double the speakers the volume of the cabinet should be double, and the port area as well. How does it sound anyway, do You like it?
 
The original TABAQ was designed with cross-section and volume for the 4" Tang-Band with larger effective area (Sd) than the 3.5" Tymphany that I'm using. It is a happy coincidence that the stock TABAQ works fine for a fairly large range of cone diameters, ranging from about 3" to 4.5".

In this case, it sounds better with 2x 12-ohm Tymphany drivers than with 1x 6-ohm Tymphany driver, probably due to smaller cone excursions at any given power level. The lower-end bass extension also has more authority. I'm using a BSC network of 0.75 uH || 5 ohm || 0.47 uF, and this may well need further tweaking by trial and error to get optimal sonics with these drivers.

@Perceval: Thanks, however the credit goes to the (professional) cabinet fabricator. I just gave him Bjorn's plans with my penciled changes for dual drivers, cloth baffle, etc., and just waved my hands around for some other stuff, and he just did the stuff perfectly. I only assembled and soldered the drivers, BSC network, connectors, etc.
 
this is my TABAQ LARGE.. it is without final finish yet.. thank you Bjørn....
 

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It's easy to guess based on Vifa/Tymphany driver and width of cabinet. Then fine tune R to taste. I would say 0.8mH to 1mH and between 6R and 12R. If you have stuff on hand give it a try - easy to do outboard of speaker and listen before soldering up internally.

If I had to pick one number I would say 1mH and 8R.

Of course, a sim in Akabak or MJk would let you predict it with pretty accurate results.
 
1.0 mH 3.9 ohm seems to be a good shot every time I use MJK's model with different drivers. Of course the actual behaviour of the driver could need other values to adjust the sound.

Often I do not use baffle step correction filters. With the speakers close to the wall and a listening position 2 or 3 meters away I preffer the sound without the BSC.

Do a test with and without and use the one you like the best.

Hi
Bjørn
 
Hi Danzz, the W5-2143 looks very interesting. I have used the similar W-2106 from Blue Planet Acoustic in Germany in my TABAQ they are a great improvement on the previous W5-1611 on which it is based (no mention of it on the TB website). Paper cone rather than polypropylene seems to give a warmer sound. My base is quite good in my enclosures (can't seem to upload a photo)
 

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