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Didital Things
Topic: XLR to RCA adaptor. Watch out

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Posted by xcortes on 03-17-2011
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I asked Romy the following question:

I'm contacting you because I own a Pacific Microsonics Two that I'm planning on using to playback high resolution digital files. I'm now in the process of choosing a platform, card and playing software. I know you use the Lynx AES16 but would like to know what OS and playback software you are using.

Originally I was thinking of using a Mac and Amarra but I've heard there's issue with large files. Also to use a Lynx card I would need a Mac Pro Tower with all it's noisy fans. With a PC there's silent options.

I've also read about the Pyramyx Software and Mykerinos card but they're hard to source and very expensive. And I'm not sure they're worth the difference vs the Lynx.

Anyway, I'd love to know what you're using and, even more, why.

Thanks,

His answer, for future reference and/or comments was:

I very much like the Lynx AES16 card. I use it for 7 year and did not have problem with it. Lynx has great technical support that is not unimportant. I do not use ASISO driver and use the Lynx original drivers – I see no sonic needs to go ASISO . In case of use Pacific Lynx is in particularly comfortable as Pacific run dual wire at 4X and Lynx has dual wire mixer.

I use Lynx in PC that I built myself and XP Pro. I did not try any other OS on DAW box. My favorite software to play files is Wavelab 6, mostly because I record in Wavelab 6. The software plays files is VERY import as the all sound VERY different. Wavelab 6 with 64bit file has no issues with large file. I play 6-8gig file very comfortably.

Posted by xcortes on 03-18-2011
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Romy,

On a past thread you adviced the following regarding the connection of the PM2:

"You will not have problems to drive with balanced Pacific your single-ended amp. Juts buy a good quality XLR to RCA adapter or order XLR to RCA cable and you will be set. You do not even need to care about the pins layout as it might be configurable by the unit itself. You will lose 3dB but Pacific has plenty output in its D/A section, I do not remember exactly but at 0dB digital it will swing near 7V or something like this. I do not use digital gain/attention with it."

I've been researching about the same and the PM2 manual says:

"If the audio input from the Model Two must drive an unbalanced load, use pin 2 as high, pin 1 as ground, and lift pin3 at the load or use pin 3 as high, pin 1 as ground, and lift pin 2 at the load. CAUTION: Never connect the unused low pin to ground, (pin1) as that will short circuit one side of the Model Two's actively balanced, DC coupled, output amplifier, and seriously degrade performance."

I'm not expert in XLR to RCA adapters or cables but I know that at least some DO CONNECT pin 2 or pin 3 to ground. I'll make my own so that's not a problem but anyone using adapters should make sure they leave the unused pin lifted.

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