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PostPosted: September 24th, 2023, 11:35 am 
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Checked out the grill frames that insert into the OB H-Frame module face.

Then glued and clamped the first module to do a test fit of the 8in servo woofer.

Will wire them up before installing them in the H-Frames. They are a tight fit.


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Glued and clamped.jpg
Glued and clamped.jpg [ 321.1 KiB | Viewed 876944 times ]
Grill Frame.jpg
Grill Frame.jpg [ 250.81 KiB | Viewed 876944 times ]
Test fit with grill frame.jpg
Test fit with grill frame.jpg [ 297.8 KiB | Viewed 876944 times ]
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PostPosted: September 26th, 2023, 7:56 am 
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Have two modules with the 8in servo drivers installed and wired.

Time for some testing.


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Two8inStack-small.jpg
Two8inStack-small.jpg [ 273.91 KiB | Viewed 876752 times ]
SubModule-wiring.jpg
SubModule-wiring.jpg [ 272.72 KiB | Viewed 876752 times ]
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PostPosted: September 28th, 2023, 9:47 pm 
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Finished the 4th sub module and the rest of the wiring for the 8in servo subs.

Once the 4th module glue has set, then install the next two servo woofers and wire them up.


Attachments:
WireHarnesses-small.jpg
WireHarnesses-small.jpg [ 277.36 KiB | Viewed 876716 times ]
Module#4Glued-small.jpg
Module#4Glued-small.jpg [ 285.46 KiB | Viewed 876716 times ]
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PostPosted: October 2nd, 2023, 4:50 pm 
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Sub module #7 is assembled and glue drying.

One more module to go and then install drivers for testing. Then off to painting.


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Module#7-small.jpg
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PostPosted: October 3rd, 2023, 9:00 pm 
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Both 4x8in servo sub towers are complete.

This is the idea with the MG10/QR's with the Magna Risers stands installed.

Now for some measurements to see what is needed for the DSP crossover.


Attachments:
MG10-QR+8inSubs.jpg
MG10-QR+8inSubs.jpg [ 343.34 KiB | Viewed 876628 times ]
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PostPosted: October 4th, 2023, 12:55 pm 
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The MG10/QR's wired to the GaN Class D Monoblocks and dspNexus 2x8 DSP system.

Next get the Music Server PC with the Audio Weaver system running for testing of the planars.


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MG10-QR+SKMonos+dspNexus.jpg
MG10-QR+SKMonos+dspNexus.jpg [ 355.02 KiB | Viewed 876604 times ]
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PostPosted: October 5th, 2023, 10:09 pm 
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The Magnepan MG10/QR speakers are now playing music in biamp mode with the EA dspNexus 2x8 DSP crossover driving the four Orchard Audio Starkrimson Monoblocks. Every planar driver with its own HiRez DAC and monoblock amp.

Now that the system is running will use REW to make measurements with my calibrated Behringer ECM8000 mic to see what needs some crossover work.


Attachments:
MG10QR-Playing-DaveBrubeckQuartet.jpg
MG10QR-Playing-DaveBrubeckQuartet.jpg [ 355.56 KiB | Viewed 876570 times ]
MG10QR-AWE-Running.jpg
MG10QR-AWE-Running.jpg [ 326.52 KiB | Viewed 876570 times ]
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PostPosted: October 11th, 2023, 8:03 am 
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Did some in room measurements of the MG10/QR's and after some trials, here is a redesigned DSP XO's response with the speakers.

This is at the listening position with a 500mSec time gate to include the room response.

There is also the start of the 80Hz high pass filter for use with the 8in servo subs.

The H-Frames are getting finished now. Waiting on when the modified servo amp are getting shipped.


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MG10QRdspNexusv3REW.jpg
MG10QRdspNexusv3REW.jpg [ 337.03 KiB | Viewed 876435 times ]
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PostPosted: October 11th, 2023, 11:01 am 
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Location: Parkville, Maryland
HAL wrote:
Did some in room measurements of the MG10/QR's and after some trials, here is a redesigned DSP XO's response with the speakers.

This is at the listening position with a 500mSec time gate to include the room response.

There is also the start of the 80Hz high pass filter for use with the 8in servo subs.

The H-Frames are getting finished now. Waiting on when the modified servo amp are getting shipped.

Rather than burden the Magnepans with extra electronics in the signal path (more crap) run them straight out and set the subs where they "join" the Magnepans at their natural roll-off.

You won't be disappointed.

_________________
Walt


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PostPosted: October 11th, 2023, 11:05 am 
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I was dissapointed with their response without the XO. The basic response is not very flat.

Sounds much better with the DSP and HiRez DAC's after correcting the response.


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