Cyburgs-Needle for Tangband W3-871S

[Landroval]

Originally posted by revell
I just finished painting my needles, so it's picture time.
Hi gloss white paint makes them look like expensive design speakers

Hi gloss white is great. Here's my JX92's

[matjans]

Can you just use john krutke's (zaph) TB w3-871 correction network for these needles or is there more to it?

Same question for the hivi-b3s. A more complicated network, that is...

[jemraid]

Dear Revell,

Your Needles look realy professional, I hope they are sounding a lot better as well.

Dear Matjans,

There are some details of the circuit for the Tangband/Needle combination at the beginning of this thread. See Berndts first few posts. Though you could use the FRS8 :-)

Regards - Jem

[Cyburgs]

@revell:
Very nice design, I like white as colour for speakers very much.

@ all Needles fans:
I have good news: The biggest german DIY audio magazine "Klang & Ton" featured in the current issue an article about the needles (and also about the Viech, btw), all in all seven pages, with plans, pictures and measurements. Especially the description of the listening session is very nice.
Your needles are celebrities now. In a way.


You see the two needle versions and the Viech on the bottom left on the title page.
http://www.brieden.de/klangton.html


Nice greetings, Berndt

[Relax]

How can I modify the Neddles for two tang band drivers? Preferably in the front.

Is it possible to do this at all?

Or should i just build the needle and add another sealed or ported enclosure on top for the second driver?

Also, if using the tangband, should I XO it at 14k and use a tweeter for above? if so, what tweeter is an inexpensive addition?

[matjans]

as of yet i'm using the needles with the tangbands fullrange (no tweet, no sub). I'm planning on using a sub xo'd at ~70hz and a motorola horn tweeter (EUR 5 at a local dumpstore, goes up to 30kHz), xo'd at something like 12-14kHz.

Not fullrange anymore but more like wide-range.

[kec]

Originally posted by Relax
How can I modify the Neddles for two tang band drivers? Preferably in the front.

Is it possible to do this at all?

Also, if using the tangband, should I XO it at 14k and use a tweeter for above? if so, what tweeter is an inexpensive addition?

Relax,

I added a second TB 871 on the rear of the cabinet directly behind the front driver - a bipole arrangement. Right now I'm just testing this configuration. You do need to leave 18"- 19" of clearance behind the cabinet to the wall.

Salas added an Audax $5 tweeter (from Madisound) to his TB3 design which is also a bipole design, see here: http://www.diyaudio.com/forums/showt...262#post731262

I've built the TB3's with the Audax tweeter and it sounds very nice. The tweeter definately adds a much needed top end to the 871.


-Ken

[Relax]

If I were to cross over to a tweeter, would I still want the notch filter on the tangband? I would think not since the notch is above the 14k i would cross at.

I like to hear you can add another tangband, however I would really liek to have it visible from the front. What would adding a sealed enclosure for another tangband directly ontop.

like this:


Or i was thinking maybe XO both TangBand drivers at 14k, and then use a tweeter for on up to reduce comb filtering:

[Relax]

any thoughts?

[kec]

Relax,

I like to hear you can add another tangband, however I would really liek to have it visible from the front. What would adding a sealed enclosure for another tangband directly ontop.

I really don't know. Why do you want the second driver on the front???

I guess it will work, but not sure how well it will sound. I'm no expert - especially on TL. Maybe a second 871 can be added under the first.

-Ken