Author Topic: Open baffle planars and servo subs  (Read 38721 times)

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #30 on: April 13, 2016, 09:31:44 AM »
Magically, the #4 woodscrews just arrived with no tracking data.

Second baffle completed and ready for when the FPS drivers arrive from PE, also no tracking info.

Next up measuring speaker #1.

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #31 on: April 13, 2016, 07:09:53 PM »
First speaker is completed and ready for testing.  Will setup the measurement gear tomorrow to begin.

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #32 on: April 14, 2016, 06:39:51 AM »
First CLIO Pocket measurement of the FPS array without the servo subs. With some simple shelving filters should be able to flatten out the HF response of the array.

Offline richidoo

  • Out Of My Speaker Cabinet
  • ******
  • Posts: 11136
Re: Open baffle planars and servo subs
« Reply #33 on: April 14, 2016, 08:42:25 AM »
FR not bad at all!  :thumb:
Amplitude scale is very zoomed in.

HP 4th order around 600Hz?

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #34 on: April 14, 2016, 08:54:13 AM »
The hp is at 125Hz at this point, single pole. 

Going to try a shelving filter and see what happens.

Just figured out the gating function in this version, and found the first bounce to remove.  Will see what happens.

Offline jessearias

  • Certifiable
  • ***
  • Posts: 116
Re: Open baffle planars and servo subs
« Reply #35 on: April 14, 2016, 09:10:03 AM »
How do you measure the frequency response? With a mike or mikes?  What program are you using?

I always thought you needed an anechoic chamber to test speakers or drivers. But I like this do it at home method.
Parasound A21, Parasound JC2BP, Oppo 205 BR/SACD Disc Player, Marantz ST6000 Tuner, GoldenEar Triton 2 speakers and Supersub XXL, Triode Wire Labs interconnects, power cables and speaker wire, PI Audio Uber, Mini and Digibuss, Border Patrol DAC

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #36 on: April 14, 2016, 09:38:48 AM »
I use an Audiomatica CLIO Pocket system that comes with a calibrated Omni mic.  Parts Express sells them for $525.00.  I use it for a lot more than just speaker measurements.

If you want to get started, I would recommend reading about gated time speaker measurements, download Room EQ Wizard and get a Dayton Audio UMM-6 calibrated mic from Parts Express.  If the sound card or DAC on your PC is a good one it will work for in home frequency response measurements.

Offline _Scotty_

  • Obsessively Audiophilic
  • ****
  • Posts: 556
  • “Sic transit gloria mundi”
Re: Open baffle planars and servo subs
« Reply #37 on: April 14, 2016, 10:28:53 AM »
Rich, does the Pocket CLIO give very different measurements than REW with a calibrated USB mic.
Scotty

Offline richidoo

  • Out Of My Speaker Cabinet
  • ******
  • Posts: 11136
Re: Open baffle planars and servo subs
« Reply #38 on: April 14, 2016, 10:47:45 AM »
I've had good results with Dayton OmniMic. I found it much easier to use than REW.

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #39 on: April 14, 2016, 10:51:23 AM »
Rich, does the Pocket CLIO give very different measurements than REW with a calibrated USB mic.
Scotty
Scotty,
No, but I can make electrical measurements with CLIO pocket but not REW.

For speaker and room measurements REW is fine. 

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #40 on: April 15, 2016, 04:56:19 AM »
Setup my CLIO Standard 8.5 system to take measurements of the line array.  Packing up the Pocket CLIO to ship out for some measurements.

Have it warming up now and will see what happens.

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #41 on: April 15, 2016, 11:23:03 AM »
Did the measurements and compared the line array with and without the beamformer.  The red trace is without the beamformer and the green is with the beamformer.  Getting around 5dB of gain at 100Hz.  This is now looking good.

Finished installing the FPS planar drivers in the left speaker and speaker cables ready to connect. 

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #42 on: April 15, 2016, 05:44:38 PM »
Just a bit more wiring and it will be time for listening. 

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #43 on: April 24, 2016, 02:37:33 PM »
It's alive, IT'S ALIVE!  Bwahahahahah!

https://www.youtube.com/watch?v=siMwaFeJZdc

Offline HAL

  • Obsessively Audiophilic
  • ****
  • Posts: 612
  • Audio Mad Scientist
    • Hollis Audio Labs
Re: Open baffle planars and servo subs
« Reply #44 on: April 25, 2016, 04:23:56 AM »
All 12 amp channels and 12 FPS planars are working and making music.

Today will try some CLIO measurements to see how well I have the EQ setup to work with the servo subs.