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-   -   Tekton Lore DIY (http://www.diyaudio.com/forums/multi-way/228924-tekton-lore-diy.html)

eaglears 29th January 2013 02:55 PM

Tekton Lore DIY
 
Heyo

I was wondering if anyone has done a DIY similar to the Tekton Lore which uses a 10" Eminence Legend woofer and a gold Audax tweeter with a simple crossover. I'd like to learn more about this design.

Cheers~

MeTarzan 15th March 2013 05:38 PM

I would like to learn more about the Lore (and Pendragon) design as well.

SpirosZ 15th March 2013 10:44 PM

That makes it three of us.
I believe it may also work with this tweeter as well.
However I plan to try it with a CD and a SEOS waveguide crossed around 2k 1st order.

ScottG 15th March 2013 11:21 PM

This interest doesn't make much sense to me..

Just on value alone:

There is about 400 US solely in drivers cost (to a DIY'er - IF you could get them).. then add-in other expenses relating cabinet, finish, crossover parts, binding posts, etc.. Basically IF everything goes right with the build you might spend only *slightly* less than the cost of the manufactured speakers (which are 999 US).

There are of course plenty of *other* reasons to avoid this design as well..

1. The primary is that I believe they are using the older version of the Legend B102 (now custom). (..even then, the older B102 is less available - and it can be difficult distinguishing differences).

2. Lack of baffle-step in a "full-range" design results in a lean response at listening distance greater than a meter (with upper midrange emphasis).

3. Poor linear performance.

4. Poor linear polar performance.

etc..

ScottG 15th March 2013 11:39 PM

Now their Pendragon.. that's a design that might be more interesting.. ;)

MeTarzan 15th March 2013 11:51 PM

Quote:

Originally Posted by ScottG (Post 3412806)
Now their Pendragon.. that's a design that might be more interesting.. ;)

Tell us more! :D

Would love to build a pair if they are as great as "they" say they are...

ScottG 16th March 2013 01:35 AM

Quote:

Originally Posted by MeTarzan (Post 3412822)
Tell us more! :D

Would love to build a pair if they are as great as "they" say they are...

I think the most interesting part of it is the tweeters - the very same that SpirosZ linked to.

They are small enough in size to minimize combing effects by allowing closer placement to each other and the woofers. (..probably all series connected - with a net an average spl slightly higher than there reference - say an honest 96.5 db for a nice easy impedance).

There is also likely enough gain from the woofers to provide baffle step compensation.

The only real problem IMO is the use of 10" drivers - which are probably also custom.. in a 2-way design.

-it's a bad idea for the same sort of reasons I previously mentioned about the Lore.


A much *better* choice would be a 3-way (2.5 actually) with a smaller mid driver.

ie. 3 X SB tweeters, a B&C 6MD38-8 mid, and THEN the 10" drivers. Crossover the 10" at a point where baffle-step occurs (so you don't need baffle step compensation).

-yes, more expensive because of the mid.. BUT almost certainly MUCH better performance.

A pair of eminence 10B's in a 7.5 cubic foot cabinet with a tuning freq. in the mid 20's works out well when factoring in the gain of the drivers parallel connected to 8 ohms and pressure losses from the baffle. Might not need much more than a large iron-core inductor with the right size baffle for good integration with the midrange.

hoxuanduc 16th March 2013 01:41 AM

pi 2 floor standing speakers would be pretty similar. 1 in tweeter & 10 in eminence woofer. Simple cross over, sounds good.

Pi Speaker Kits, two Pi tower kit

ScottG 16th March 2013 01:55 AM

Quote:

Originally Posted by hoxuanduc (Post 3412936)
pi 2 floor standing speakers would be pretty similar. 1 in tweeter & 10 in eminence woofer. Simple cross over, sounds good.

Pi Speaker Kits, two Pi tower kit

Also design problems.. and that 100db efficiency? I know of no tweeter that even comes close to that. Supravox has a gold-dome unit that's about as high as I know of, and considering its problems - it's really only usable as a super-tweeter.


This grouping of kits is a bit more realistic at higher eff. with good design:

Waveguide Speaker kits DIY Sound Group

Not much low freq. extension though.. And the low freq. extension might not be a problem if you use subwoofer(s).

SpirosZ 16th March 2013 08:20 AM

There is also one more kit using that Legend B102 driver Strassacker, Komponenten: Lautsprecher, Frequenzweichen, Bauelemente.


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