Ultimate OB GALLERY

[gainphile]

Outdoor Dipole PA (another):

Outdoor Dipole Audio « Stephen W. Moore



Interesting how he uses the dipole nulls outdoor:

The sound was very good – clear with very rich bass and tone. The dipole woofers functioned beautifully in the outdoors environment. Their “figure 8″ radiation pattern was clearly evident, with null nodes at the sides and full bass response directly in front and back. I noticed several partygoers taking advantage of the null nodes for private conversations, and the buffet tables were also placed in the null node on the other side.

[mige0]

Stig Erik Tangen,
the designer of the "Almighty Subwoofers" and other impressive projects has undertaken a great trip into swingin' speakers


Read the full story here:

My open baffle dipole with Beyma TPL-150


Michael

[D OB G]

The Audiosyncrasy.

[SunRa]

Hello,


I've followed with great interest the development of your system, especially since it started with a PHY-HP fullrange driver. It seems you are now using a 6.5" 18Sound midrange. How are those in OB? How's this system sounding? It looks very interesting!

[gainphile]

Very tidy implementation of LinkwitzLab Phoenix:

http://www.403forbidden.net/Audio/SoCalDIY2003.html



They seem to use Seas drivers instead of the original ScanSpeak.


Also a closeup of another dipole system from the background:

[gainphile]

DNA Sequence:

DNA Sequence Speakers dipole open baffle woofer high efficiency point source array midrange tweeter treble loudspeaker



For the tube "die-hard", a 10 tube (4 6SN7s and 6 6C45s), single-ended class A, zero-feedback, all triode active crossover is employed. Satellite highpass section is ultra quiet with very wide bandwidth. Uses over 400 parts including Audio Note copper foil capacitors. Note the double decker power supply! Black acrylic faceplate is custom laser engraved. Designed by legendary circuit genius Brad Wood. Includes bass level control for gain matching of different amplifiers.

[head1962]

Originally Posted by gainphile

DNA Sequence:

DNA Sequence Speakers dipole open baffle woofer high efficiency point source array midrange tweeter treble loudspeaker



For the tube "die-hard", a 10 tube (4 6SN7s and 6 6C45s), single-ended class A, zero-feedback, all triode active crossover is employed. Satellite highpass section is ultra quiet with very wide bandwidth. Uses over 400 parts including Audio Note copper foil capacitors. Note the double decker power supply! Black acrylic faceplate is custom laser engraved. Designed by legendary circuit genius Brad Wood. Includes bass level control for gain matching of different amplifiers.

that looks really impressive!!
I used 3 parts in my crossover.
bit is not active of course.
nice work!

[D OB G]

Hello SunRa,

Yes, 18sound 6ND430s, with XT1086 waveguides and NSD1095N compression drivers.

Mid/tweeter baffle is 25mm acrylic (1200mm X 450mm), which is wedged to the steel, cork covered, woofer baffle.

Eminence EMI 1550 woofers. With a pair of sealed subwoofers.

The sound is clearly the best I've produced yet!

The 6ND430 has proven to be excellent for OB. Neodymium magnet leaves the basket quite open. +/- 5mm linear Xmax, which is not called upon with the 170Hz, 24 dB/octave Xover. MUCH more detailed than the PHY-HPs, and in fact all the other mids I have tried.

The whole system has proven to be very dynamic, with no sense of compression. As I've learnt how to tune in the DEQX (getting the cleanest impulse response), it has become very detailed indeed.

Regards,

David

[amt]

Almost bought a pair in need of a refurbishing. Opted out since I couldnt find any info on the drivers etc (at least not in the time I had to make the decision)

The Gradient 1.3 Revisited

amt

[SunRa]

Hello David,


Thank you very much for your reply! Much appreciated! What is the crossover point between the waveguide and the 6nd430? Around 1400 Hz?

Also, to which midranges are you comparing the 6nd430 besides the PHY-HP? Maybe I had the chance to listen one of those

Many thanks!