Author Topic: The new HAL AGN open baffle planar line arrays begin  (Read 431 times)

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
The new HAL AGN open baffle planar line arrays begin
« on: July 08, 2021, 01:22:41 PM »
Building a new design open baffle planar line array with the new planars in house.  These are moded from the first pair of drivers to a lower impedance of 9 Ohms.  This lets me drive a pair in parallel with monoblocks.  The baffles to make the first pair arrived today and in the picture.

The crossover to begin with will be the dspMusik 2x8.  This will drive the 3 pairs of monoblocks with long XLR cables and short speaker cables.

The response should be 250Hz to 20KHz from the line array and a pair of 3x12 OB H-Frame servo subs for 250Hz down. 

Will be moved to the audio room for planar installation and testing before disassembly.  Will get an automotive style finish when ready.

Offline Nick B

  • Global Moderator
  • *****
  • Posts: 3160
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #1 on: July 08, 2021, 01:38:35 PM »
Hi Rich,
How tall will these be and what size is the bottom platform? Also, what was the prior impedance?
Nick
Van Alstine SET 120 Control Amp
Supratek Chardonnay preamp
Fritz Carrera 7 BE speakers
Border Patrol SEi dac
Auralic Aries Mini & Mojo Audio lps
Audio Envy & Wywires cables
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #2 on: July 08, 2021, 03:25:14 PM »
Hi Rich,
How tall will these be and what size is the bottom platform? Also, what was the prior impedance?
Nick

Nick,
They are 6'1" tall and 18"w x 29"d for the base.

The original planar drivers are 20 Ohms.

Offline Nick B

  • Global Moderator
  • *****
  • Posts: 3160
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #3 on: July 08, 2021, 04:15:36 PM »
Hi Rich,
How tall will these be and what size is the bottom platform? Also, what was the prior impedance?
Nick

Nick,
They are 6'1" tall and 18"w x 29"d for the base.

The original planar drivers are 20 Ohms.

Thanks, Rich. I’ll admit to knowing virtually nothing about technical specs sometimes, but I can’t say I ever recall having seen anything regarding 20 ohms.
Van Alstine SET 120 Control Amp
Supratek Chardonnay preamp
Fritz Carrera 7 BE speakers
Border Patrol SEi dac
Auralic Aries Mini & Mojo Audio lps
Audio Envy & Wywires cables
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #4 on: July 08, 2021, 06:05:39 PM »
That is more in the range of planar headphones impedance than for home speakers.  That is why I asked for the moded drivers.

Offline Nick B

  • Global Moderator
  • *****
  • Posts: 3160
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #5 on: July 08, 2021, 06:38:36 PM »
That is more in the range of planar headphones impedance than for home speakers.  That is why I asked for the moded drivers.

Thanks, Rich. Just learned a little more tonight
Van Alstine SET 120 Control Amp
Supratek Chardonnay preamp
Fritz Carrera 7 BE speakers
Border Patrol SEi dac
Auralic Aries Mini & Mojo Audio lps
Audio Envy & Wywires cables
Roon, Tidal, Qobuz
PI Audio UberBUSS

Offline tmazz

  • Out Of My Speaker Cabinet
  • ******
  • Posts: 11201
  • Just basking in the glow of my tubes.....
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #6 on: July 08, 2021, 08:46:42 PM »
How many drivers are you gong to put in those frames?
Remember, it's all about the music........

• Nola Boxers
• Sunfire True SW Super Jr (2)
• McIntosh MC 275
• ARC SP-9
• VPI HW-19 Mk IV/SDS/SME IV/Soundsmith Carmen Mk II ES
• Pro-Ject Pre Box S2 DAC/Rasp Pi Roon Endpoint
• DigiBuss/TWL PC&USB/MIT Cables

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #7 on: July 09, 2021, 03:48:59 AM »
tmazz,
There will be 6 planar drivers per array.

Those 6 planar drivers weigh 30lbs.

Offline S Clark

  • Obsessively Audiophilic
  • ****
  • Posts: 932
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #8 on: July 09, 2021, 10:37:28 AM »
A set of two in series X three sets in parallel?
“In the end, we will remember not the words of our enemies but the silence of our friends.” Dr. Martin Luther King, Jr.

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #9 on: July 09, 2021, 11:03:18 AM »
Two of the planars are in parallel with one monoblock output.  The monoblocks are setup for a 4 Ohm load, so the pair will be 4.5 Ohm.  This will let me have minimum speaker cable lengths to all drivers from the amps. 

Each pair of drivers will have different input signal time delays for the beamforming capability.

The amp inputs are all balanced XLR's for longer signal cable runs and no ground loops.

Offline S Clark

  • Obsessively Audiophilic
  • ****
  • Posts: 932
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #10 on: July 09, 2021, 12:13:17 PM »
 :duh  Of course, I knew you wouldn't hook them up to a stereo amp like most of us troglodytes with our single amp and preamp.   What was I thinking?   :thumb:
« Last Edit: July 09, 2021, 12:15:17 PM by S Clark »
“In the end, we will remember not the words of our enemies but the silence of our friends.” Dr. Martin Luther King, Jr.

Offline P.I.

  • Industry Participant
  • *
  • Posts: 1215
  • Silence is that blackness beneath the music
    • P.I. audio group, LLC
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #11 on: July 09, 2021, 02:47:15 PM »
:duh  Of course, I knew you wouldn't hook them up to a stereo amp like most of us troglodytes with our single amp and preamp.   What was I thinking?   :thumb:
:rofl:

Yep, that's Rich! :thumb:
"A man with an experience is never at the mercy of a man with an argument." - Hilmar von Campe

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #12 on: July 10, 2021, 11:56:01 AM »
Well, I got it down to 8 DAC channels instead of 12 DAC channels!  Progress!  :thumb:

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #13 on: August 01, 2021, 09:36:35 AM »
The first pair of HAL AGN Line Array open baffle planar speakers are now ready for wiring and testing. 

After testing is complete, they are off to have the metallic paint finish applied.   

RMAF2021 is about 2 months away!

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 970
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: The new HAL AGN open baffle planar line arrays begin
« Reply #14 on: August 05, 2021, 07:59:39 AM »
The AGN Line Array's are connected and operational. 

The dspMusik 2x8 is driving three pair of Orchard Audio original BOSC (now Starkrimson) amps.  They are being used with two 3x12in OB servo subs.  The lower half of the two 6x12in OB servo sub arrays.

Now for some speaker measurements and crossover tweaking.  Even with a modified Magnetar DSP crossover they sound really good.    :thumb: