Tymphany custom OEM surplus drivers group buy

Audiolab 9000N
Put the LR on extreme left/right for a 2 channel setup.
You may add another driver in the centre, just in case you need a center channel later on.
There is no room to address the sensitivity part in this soundbar application. For typical TV/HT use it should do fine. You may also cross a bit higher around 120hz and pass the lows to a sub.
 
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magma said:
Linux
I may probably need a pair
Suited for LR bookshelves
Please pm price.
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6 ohms will be about right for single-driver bookshelves. For a sound-bar you may want to look at Bessel arrays (I don't know much about them either, but have seen references to it at diyAudio).

Will PM you later today.
 
My soundbar design is already frozen
Volume , dimns and int amplifier already fixed

Thanks siva
 
Hmm
Funny how you found this

I have been exchanging mails with Bjorn
For sometime

The w4 original driver he used became unobtanim

And he doesn't share his current preference
Without a fee

I recently offered to wired him a sum
For his re design

Though many 3 inchers work
Small changes are reqd in the bsc
Stuffing a d height

Plans for his commercial version
I got only last week
Though it's actually only his advice
More than a formal plan
 
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keith_correa said:
Kvart & Bolge is the commercial venture of Bjorn Johannesen who designed the "TABAQ" speakers mentioned earlier in this thread. It is a MLTL design.
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Oddly, the response curve measured by the reviewers in that article is worse than the stock TABAQ with Tang-Band drivers. It shows an audible peak (possibly a cone break-up mode or resonance) around 12 kHz. The driver also seems to have a large whizzer cone attached.

I think the Vifa TC9FD (paper cone) or TG9FD (woven cone) in a stock TABAQ, will easily outperform the driver that Kvart and Bolge chose, for whatever reason.

There are also multiple (at least 3 at last count related to the TABAQ) folded MLTL designs at diyAudio which have more manageable dimensions. It is also feasible to use a dual full-range driver design in a folded MLTL to increase power-handling or keep Xmax under control, but stuffing the sealed end of the TL becomes mandatory with 2 drivers to keep reflections under control. It also alters the BSC network (because Sd doubles), and I haven't groked the math to get that done right - so I'll probably stick with a single Tymphany driver initially, listen to it and decide on dual drivers later.
 
Vinay2013 said:
... Any update on shipping the drivers.

Additionally, is it possible to build a cabinet identical to the specs in the original Tabaq speakers by Bjorn? link: http://coolcat.dk/bjoern/TABAQ_TL_for_TB.pdf
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I hope to get started on shipping by Saturday, hopefully.

The TABAQ is feasible, and you may want to look at one of the folded MLTLs related to the TABAQ - they will be shorter and maybe use less material than the stock unfolded TABAQ. Generally, a tapered TL will occupy less volume than a straight design, but it will also be harder to build, e.g. Pico Lino 2 or similar.

(I'll get back to those whose PMs are awaiting replies, etc. within a day or two).
 
Vinay2013 said:
Additionally, is it possible to build a cabinet identical to the specs in the original Tabaq speakers by Bjorn? link: http://coolcat.dk/bjoern/TABAQ_TL_for_TB.pdf

I think I can ask my carpenter to make such enclosure due to its simplicity and every details available.
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Why not take the plunge? These speakers have drawn praise from almost all those who had built them.

Don't forget to note the new driver position which is 5 cm higher than the old one. Also, the vent gap height of 1.6 cm is very critical so please ensure that when you build your cabinets.

You'll have to experiment with the damping when you use the Tymphany drivers, though.

I don't know how much your carpenter will charge you but the plywood will not cost you too much. If you are not very particular about width cuts then a 5' x 3' sheet of 12 mm plywood will suffice. If you want to keep the grain directions then a 6' x 4' sheet will be needed. And you'll have some plywood left over for your next project too! :)
 
Thanks Siva - I have seen the bookshelf design and was seriously thinking about that but you know I am trying this for the first time with zero technical knowledge and enclosure requires folding which is not as simple as tower design, hence decided to build tower. Also, I am not sure how efficient my carpenter will be to build bookshelf. Difference in cost is not much + I already have bookshelf speakers but will definitely try that and that's why I asked for two pairs :)

Regards,
Vinay
 
Hi Musiklava - Sure I am planning for it. Thanks a lot for your suggestions. I will certainly take care of that. This gives me strength to build my own speakers with no technical knowledge (I can solder wires though :) ). Carpenter cost would be somewhere around 1K.
Please can you answer few quick questions:

1) Can I continue with the same size of enclosure for 3.5" Tymphany drivers or there should be any change in size since original driver used was 3".
2) Will it sound real bad if I don't use a baffle step compensation circuit?
3) MDF or ply board? Original Tabaqs used MDF but I have seen people recommending ply board over MDF
4) Damping: what material should I use and where can I find it? Will woolen felt pasted inside the wall work?

Sorry for too many questions. Also, please can you share if you have revised design with specifications.

Thanks again
Vinay
 
Vinay2013 said:
1) Can I continue with the same size of enclosure for 3.5" Tymphany drivers or there should be any change in size since original driver used was 3".
2) Will it sound real bad if I don't use a baffle step compensation circuit?
3) MDF or ply board? Original Tabaqs used MDF but I have seen people recommending ply board over MDF
4) Damping: what material should I use and where can I find it? Will woolen felt pasted inside the wall work?
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Here are some answers. I can only share my personal experiences from my own Tabaq build which is currently on-going -

1) I don't know whether you've read the entire Tabaq thread in diyaudio but it will be a good idea to go over it once. Youll find a few builds and discussions there on the Vifa TG9FD, which has near-similar specs to the Tymphany drivers in the group buy. The same enclosure in the given plans can be used. No alterations are needed. The hole cut out diameter for the Vifa drivers is ~ 78 mm and the driver size is ~ 89 mm at its widest. The same dimensions will apply for the Tymphany drivers, I think. The Tabaq baffle is 100 mm wide. So you won't have any problems there.
2) If we are to go by the driver frequency response specs I dont think a BSC will be required with these drivers. It was mostly recommended for the original TB drivers. In any case, speaker placement and room acoustics will also play a big role in the final Sound Quality but that will come later. I had asked Mr.Johannesen the same question and he suggested to try out the speakers in the room that Ill place them in before going for a BSC. I suggest that you break-in your Tymphanys before you seal the enclosures finally.
3) MDF or plywood the jurys out on that question so I'll by-pass it. Eventually its your personal preference. Im using plywood if it's of any help. Its easier for me to work with. (Im building it on my own no carpenters for me! :)). You should discuss this point with your carpenter and find out which type hes more comfortable working with. Just make sure that he seals all the joints perfectly without leaving any part out (except, of course the vents!!)
4) You can use poly-fill for damping, the type thats used for pillows, stuffed toys and the like. I think you should avoid pasting wool felt to the inner walls because that will change the internal dimensions, notably the cross-sectional area, which is very critical to this design.

I hope I've managed to help you somewhat...
 
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Hi Musiklava - Thank you so much for your detailed reply. I have gone through the thread in diyaudio but you know there are few things that totally went above my head.
I am relieved now.

This is great help.
Regards,
Vinay
 
I suggest that you do not build anything until the TS parameters for THIS particular driver are known. Some things which are critical in a MLTL design like the TABAQ are:
1.The cross-section area and the internal height of the enclosure.
2.The port size and location.
3.The location of the driver from the internal top.

All of these will be clear only after simulation with the actual TS parameters of the driver. Who will do the sim remains to be seen though ?
 
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keith_correa said:
I suggest that you do not build anything until the TS parameters for THIS particular driver are known. Some things which are critical in a MLTL design like the TABAQ are:
1.The cross-section area and the internal height of the enclosure.
2.The port size and location.
3.The location of the driver from the internal top.

All of these will be clear only after simulation with the actual TS parameters of the driver. Who will do the sim remains to be seen though ?
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^^^^
this man knows something

all drivers that are 3.5 inch automatically dont go into the tabaq without the BSC , stuffing or volume changes
and even if they do, they dont offer as good results as the W4's

instead you should see builds where THIS particular driver has seen responses
 
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