Dipole tweeters

Bumpy · « **on:** 18 Sep 2018, 11:03 pm »

So what would people recommend for mid 90's sensitivity dipole tweeters

FullRangeMan · « **Reply #1 on:** 18 Sep 2018, 11:29 pm »

Comes to mind a Alpair paper cone, spl are 85dB though>
file:///C:/Users/-/AppData/Local/Temp/Alp6M_Gen.2-june2011.pdf
A dipole tweeter have to have a cone, domes usually emit sound only to front.

WC · « **Reply #2 on:** 18 Sep 2018, 11:57 pm »

Neo 3

dBel84 · « **Reply #3 on:** 19 Sep 2018, 12:30 am »

There is a new kid on the block too.

https://radianaudio.com/product-category/ribbon/

No affiliation, just know the engineer and he told me that they will be selling to the DIY market.

.. dB

nickd · « **Reply #4 on:** 19 Sep 2018, 03:00 am »

Wow,I like the look of the radian 6” planar with the wave guide. Now they need to offer it with out the woofer. Looks like it would make a nice line source.

Thanks for sharing.
I’m a +1 on the neo3 and neo8 love and have used them both.

JohnR · « **Reply #5 on:** 19 Sep 2018, 05:09 am »

There's a list here, if you haven't seen already: https://www.audiocircle.com/index.php?topic=149613.0

Bumpy · « **Reply #6 on:** 19 Sep 2018, 06:46 am »

Plenty of reading to be done there,

Thanks

nickd · « **Reply #7 on:** 19 Sep 2018, 12:26 pm »

Very nice resource John.
Thanks for the info.

Poultrygeist · « **Reply #8 on:** 20 Sep 2018, 03:45 pm »

My vote goes for the B&G neo 3's.

rollo · « **Reply #9 on:** 20 Sep 2018, 04:03 pm »

Raven is my choice, however AMT tweeters have me smitten lately.

charles

matevana · « **Reply #10 on:** 21 Sep 2018, 09:36 am »

Raal Dipole 140-15D. 93dB. Mortgage the house.

matevana · « **Reply #11 on:** 21 Sep 2018, 09:46 am »

I also lived with the Dayton AMTPRO-4 for several years. It’s an open back AMT. The response was rough and they were underwealming so I don’t necessarily recommend. That being said they are 94dB and currently $120. I believe Aurum Cantus has a similar model which may be a bit better, but I have not heard them personally.

pompon · « **Reply #12 on:** 25 Sep 2018, 11:48 am »

Can you describe the difference with back closed vs open for the tweeter ?

Quote from: Poultrygeist on 20 Sep 2018, 03:45 pm

My vote goes for the B&G neo 3's.

Bumpy · « **Reply #13 on:** 25 Sep 2018, 03:51 pm »

By definition an open baffle gets its wonderful spacious sound (boxless) by exploiting the dipole emission of speakers. For coherence this should include all drivers - bass, midrange and tweeters.

Why would you compromise the set up by having just a forward firing tweeter?

In my eyes all drivers should have similar character, an example would be for them all to have alnico magnets, paper cones.

Poultrygeist · « **Reply #14 on:** 25 Sep 2018, 09:32 pm »

With the Zenith OB's I use a closed rear firing tweeter to compensate for the closed front firing tweeter.

Bumpy · « **Reply #15 on:** 26 Sep 2018, 06:55 am »

Quote from: Poultrygeist on 25 Sep 2018, 09:32 pm

With the Zenith OB's I use a closed rear firing tweeter to compensate for the closed front firing tweeter.

Interesting
How are they wired (series/parallel) and what does it do to the impedance and sensitivity. Also are there any phasing issues?

Russell Dawkins · « **Reply #16 on:** 26 Sep 2018, 07:10 am »

Quote from: Bumpy on 25 Sep 2018, 03:51 pm

By definition an open baffle gets its wonderful spacious sound (boxless) by exploiting the dipole emission of speakers. For coherence this should include all drivers - bass, midrange and tweeters.

Why would you compromise the set up by having just a forward firing tweeter?

In my eyes all drivers should have similar character, an example would be for them all to have alnico magnets, paper cones.

So then tweeters should have alnico magnets and paper cones?

Russell Dawkins · « **Reply #17 on:** 26 Sep 2018, 07:11 am »

Quote from: Bumpy on 26 Sep 2018, 06:55 am

Interesting
How are they wired (series/parallel) and what does it do to the impedance and sensitivity. Also are there any phasing issues?

Phasing issues? With wavelengths that short?

Tyson · « **Reply #18 on:** 26 Sep 2018, 07:38 am »

Quote from: Poultrygeist on 20 Sep 2018, 03:45 pm

My vote goes for the B&G neo 3's.

I 3rd (4th) the Neo3 rec. Almost a perfect OB tweeter.

Poultrygeist · « **Reply #19 on:** 26 Sep 2018, 09:20 am »

Those opposed tweeters are wired parallel with reverse phase on the rear tweeters.