Author Topic: Open baffle planars and servo subs  (Read 62460 times)

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #120 on: June 15, 2016, 06:23:08 PM »

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #121 on: June 16, 2016, 05:44:18 AM »
Just ran MathAudio Room EQ on the latest version crossover on The Megaliths :shock: .   This is a whole different league from any box loudspeaker and most electrostats and planars I have heard.  The digital crossover driving the amps directly to each driver is as clean as any setup I have heard and when the servo subs kick in it is amazingly extended and tight. 

Now if I only had some planar tweeters!



Offline richidoo

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Re: Open baffle planars and servo subs
« Reply #122 on: June 16, 2016, 05:53:14 PM »
A proper video introduction:

Kickass!!

Were the Megaliths playing the music?

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #123 on: June 16, 2016, 06:09:55 PM »
Rich,
Yes.  Everything is working and Room EQ.    :D
« Last Edit: June 16, 2016, 06:11:43 PM by HAL »

Offline jimbones

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Re: Open baffle planars and servo subs
« Reply #124 on: June 17, 2016, 08:47:05 AM »
IT'S ALIVE!!!!    :shock:
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Offline HAL

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Re: Open baffle planars and servo subs
« Reply #125 on: June 17, 2016, 02:10:45 PM »
MUAHAHAHAHAHAHAHAHAHAHA  :!:

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #126 on: July 21, 2016, 02:24:37 PM »
Since Christie Digital is yet to send any BG Neo3-PDR's to PE to fill my order, it has been cancelled.

GT Audio Works is building me 8 - 20" dipole ribbons to replace the unavailable BG style.  Should be ready in about 3 weeks from today. 

This will be 4 - 20" ribbons per side with each pair in series for a 4 ohm load on the Class AB amps.  The pairs will be driven with different time delays to beamform them in the vertical plane. 

Working with Danville Signal on the next version of the dspMusik that will have 16 channels of analog output to drive the speaker system's 2600 watts of amp capability.

Offline BobM

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Re: Open baffle planars and servo subs
« Reply #127 on: July 22, 2016, 06:29:36 AM »
Nice long project with a good end result. Thanks for sharing.
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Offline HAL

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Re: Open baffle planars and servo subs
« Reply #128 on: September 06, 2016, 05:01:31 AM »
The 8 ribbon tweeters should be ready this week for shipping.  Last minute inspiration on a different technique to build them resulted in improved sound quality, so the ribbon elements were replaced with new ones.

The dspMusik RevD digital crossover is up and running with test firmware.  Listening trials have started.  This is the version that is expandable to 16 channels of output and full minimum phase ADC and DAC filters.


Offline HAL

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Re: Open baffle planars and servo subs
« Reply #129 on: September 08, 2016, 07:46:50 PM »
The 8 - 20" ribbon arrays are complete and should ship tomorrow.  Will be here next week to install and start testing. 

Will use a passive crossover for the tweeters until the dspMusik 16 channel system is complete and ready to implement the full beamforming crossover.

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #130 on: September 14, 2016, 10:56:41 AM »
The tweeters are here.  Time to unpack them.

Offline rollo

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Re: Open baffle planars and servo subs
« Reply #131 on: September 26, 2016, 06:30:52 AM »
  Hey Hal sounds like it is coming together for ya. Coolio.


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Offline HAL

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Re: Open baffle planars and servo subs
« Reply #132 on: September 26, 2016, 07:15:41 AM »
Charles,
Yes, the first ribbon tweeter test fit went very well.  Have an interesting mounting technique to use and will be getting the material I need to complete it.  With RMAF coming, might be after that, but if it gets here early enough, might get it done before hand.

Fun stuff!

Offline HAL

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Re: Open baffle planars and servo subs
« Reply #133 on: October 08, 2016, 02:42:19 PM »
Test fitted two of the ribbon tweeter using felt for mounting between the rails, and that seems to work very well.  Need more material, so will have to order it soon.

In the mean time the last 4 amp modules for the ribbon tweeters are completed.  Now time for testing with R-C loads to check stability before use with the real ribbons.


Offline HAL

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Re: Open baffle planars and servo subs
« Reply #134 on: October 15, 2016, 04:46:53 PM »
Got the rest of the amp modules built and setup to wire to the planars and ribbons.

BlunderBUSS at the top of the picture for power conditioning and distribution to all the amps and dspMusik digital crossover.