Best sounding full range driver speaker ever!

HAL · « **Reply #180 on:** 1 Mar 2013, 09:45 pm »

Here is the same on axis measurement for the Dayton driver with a 4.0mSec gated window.

For some reason the time window indication on CLIOwin 8.51 is not reading out correctly.

SoCalWJS · « **Reply #181 on:** 2 Mar 2013, 01:48 am »

Quote from: Danny Richie on 1 Mar 2013, 02:50 pm

From a meter away I typically look at a 4ms window myself.

Care to elaborate why this particular measurement?

Danny Richie · « **Reply #182 on:** 2 Mar 2013, 02:31 pm »

Quote from: SoCalWJS on 2 Mar 2013, 01:48 am

Care to elaborate why this particular measurement?

It is a base standard. And the time window is just about right for that distance.

Nate Hansen · « **Reply #183 on:** 4 Mar 2013, 10:01 pm »

Quote from: HAL on 1 Mar 2013, 09:45 pm

Here is the same on axis measurement for the Dayton driver with a 4.0mSec gated window.

For some reason the time window indication on CLIOwin 8.51 is not reading out correctly.

Are you talking about the data on the bottom of the graph? According to the data (I don't have Clio so I might be reading it wrong) your gate length is 5458.65 ms! The fr looks pretty rough for 1/6 octave gated.......even for a fullranger

HAL · « **Reply #184 on:** 4 Mar 2013, 10:06 pm »

Yes, the legend at the bottom of the graph does not reflect the gate that I made on the displayed frequency response graph. The gate was about 4mSec long. I set the low end of the X-axis to 200Hz as the roll-off of the driver in the baffle had droped below the Y axis SPL range.

I did another set of measurements yesterday. Will see if they agree with the first set.

Danny Richie · « **Reply #185 on:** 4 Mar 2013, 10:25 pm »

I can tell from the measurement that it is gated. If it wasn't then the lower range would be all over the place.

HAL · « **Reply #186 on:** 5 Mar 2013, 02:27 am »

Another thing to notice is that the measurement Y axis is 5dB/major division instead of 10dB/major division.

It looks a lot smoother if you go to 10dB instead as a lot of folks do for far field measurements.

persisting1 · « **Reply #187 on:** 9 May 2013, 03:24 am »

Any updates on these?

HAL · « **Reply #188 on:** 9 May 2013, 10:46 am »

The clocking circuit for the two stereo DAC's is now working. Finishing the power supply to complete it.

The digital crossover software for trials is running on the HAL MS-2 Music Server under Windows 8.

Made the measurements to match the output of the servo amps with the three 8" woofers to the 8" wideband driver. Have both servo amps dialed in with the data.

Once the power supply is complete, will assemble the system and give it a listen.

LarryB · « **Reply #189 on:** 9 May 2013, 06:16 pm »

Hi Rich -

Seems like you're making significant progress. I hope the listening tests comport with the measurements.

Regards,

Larry

HAL · « **Reply #190 on:** 9 May 2013, 06:43 pm »

Larry,
Yes, making some headway on the speaker digital crossover. The dual DAC clocking circuit has been an interesting challenge. Just about complete.

The good news is that in 22 days I can do this full time!

dBe · « **Reply #191 on:** 9 May 2013, 08:40 pm »

Quote from: HAL on 9 May 2013, 06:43 pm

Larry,
Yes, making some headway on the speaker digital crossover. The dual DAC clocking circuit has been an interesting challenge. Just about complete.

The good news is that in 22 days I can do this full time!

WooHoo!!!

Dave

LarryB · « **Reply #192 on:** 13 May 2013, 05:22 pm »

Wow - retiring? You must be really old!

HAL · « **Reply #193 on:** 13 May 2013, 05:49 pm »

Larry,
Yes, I am retiring at the end of the month. I am not that old!

LarryB · « **Reply #194 on:** 14 May 2013, 06:02 pm »

One sign of old age is forgetting how old you are.

HAL · « **Reply #195 on:** 18 May 2013, 12:11 am »

Here is a picture of the HAL digital crossover project prototype. The MS-2 is the digital crossover driving four channels of clock synched DAC's.

Hope to get some listening and measuring time soon with The Monolith speakers.

This setup will allow testing many ideas past what The Monolith would need, hence the complexity at this stage.

Hank · « **Reply #196 on:** 9 Aug 2013, 11:55 am »

What happened to this project? Unsuccessful?

HAL · « **Reply #197 on:** 9 Aug 2013, 12:19 pm »

Still waiting on a major software update from the company that developed it to check out the setup. Once updated the software will no longer work with these DAC's that have the M2Tech Evo's, so will be trying it with a single DAC setup with a different USB async to I2S Bus interface.

No timeframe at this point, as I am waiting on the software to test.

Hank · « **Reply #198 on:** 9 Aug 2013, 06:48 pm »

Waiting for software - the bane of us hardware guys!

North Star · « **Reply #199 on:** 9 Aug 2013, 07:12 pm »

Here, I just posted in this thread!