Here is the set up I'm using
My system :
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Sonar 2.2 with all updates
AMD 2000XP+ processor with FIC AN11 motherboard.
128 mb DDR RAM
tnt2 m64 32mb video graphics card ( nvidia )
DMX6fire audio card with break out box ( same chip as M-audio )
24/10/48 justlink CD burner ( Nero )
9 gig quantum Viking external SCSI drive ( 7200 rpm )
24X pioneer external SCSI CD Drive
USB printer
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My gear :
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Kurz
k2600XS 88 key weighted sampler/Midi workstation
Motu 8X8 * 128 midi express midi patch bay
Aw4416 digital 24 track audio workstation
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My Settings :
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DMX 6fire :
DMA buffer size can be set to 1,3,5,7,10,15 ms
I am set to 10 ms which seems to clean up pops and clicks
I set "record digital In" to 44.1 Hz with masterclock to external
for recording ( spooling from digital board where board is master )
Windows :
multimedia is set to DMX card for record and playback
IRQ 5 is set up like this :
5 = DMX audio card
5 = VIA tech PCI to USB controller
5 = Win 9x Promise Ultra100 IDE Controller
5 = ACPI IRQ Holder for PCI IRQ steering
This is strange, because last I checked I only shared IRQ
5 between DMX and one other device, now I'm sharing 4 ?
It's been near impossible to force bios settings to isolate
an IRQ to DMX audio only, but I figured the video and most heavy interrupt devices are using their own. This does look like USB printer could interfere though.
Sonar :
I do not use plugins
In the project General settings I have audio driver bit depth set to 24 bit, Sample rate is set to 44.1. file bit depth is 24 bit
In the advanced tab Read and write caching are disabled
I/O buffer size is 128 kb
Apply Dither is set and Full chase lock is set since I chase Motu timecode. No timing offset is applied.
Sonar midi clock is set to smpte/MTC but no start/stop/continue
I do set transmit MMC and I use device 20.
AW4416 :
I set up a song in 24/44.1 mode and my midi settings are sync to MMC and MTC as slave. I set device 20 as my MMC device.
I typically send stereo master out the digital out which ends up input to DMX digital in. I also digital in to a selected pair of faders from the DMX to my AW. I have to be careful not to create a playback loop between Sonar and AW, but other than that my path is straight digital conversion to PC and AW ( actually no bit conversion at all since the DMX digital in/out is true bit for bit exchange.
Motu :
Set as master clock and although Sonar kicks things off with MMC, its the MOTU that generates clock/timecode ( AW and Sonar become slaved ).
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