Yamaha 01V 96 v2 digital output weirdness

Lee Brenkman

Lee Brenkman

Junior
Jan 13, 2011
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Oakland California USA
At two separate venues where I work the FOH mixer is a Yamaha 01V 96 version 2.

Because i am expected to make digital archive recordings of the concerts and all of the analog outputs are in use doing the house sound and four monitor mixes I have, for a couple of years now, been using the coaxial digital 2 track output to feed, through an M Audio coax to optical converter, my Mac Book Pro to make the two track recordings.

At one venue back in January the digital output, so connected, starting producing clip level spikes on the recording. I thought it might be a problem with the mixer itself and reverted to their older recording technique of mixing a stereo microphone with the feed to the main PA using a Mackie 1202.

Now, at the other venue, and using a completely different O1v 96 but the same converter, that has never exhibited the same behavior, I started getting the same pulsing, clip level spikes on the digital output. This venue has, since my last visit, extensively upgraded their lighting systems, both on the stage in in the auditorium and added a WHOLE LOT of wi fi access points.

Any of you have similar experiences using the digital output of these consoles?

I've borrowed a different coax to optical converter to try this weekend, hoping that the old M Audio might just have been bounced around too much over the years.
 
Re: Yamaha 01V 96 v2 digital output weirdness

Lee Brenkman said:
At two separate venues where I work the FOH mixer is a Yamaha 01V 96 version 2.

Because i am expected to make digital archive recordings of the concerts and all of the analog outputs are in use doing the house sound and four monitor mixes I have, for a couple of years now, been using the coaxial digital 2 track output to feed, through an M Audio coax to optical converter, my Mac Book Pro to make the two track recordings.

At one venue back in January the digital output, so connected, starting producing clip level spikes on the recording. I thought it might be a problem with the mixer itself and reverted to their older recording technique of mixing a stereo microphone with the feed to the main PA using a Mackie 1202.

Now, at the other venue, and using a completely different O1v 96 but the same converter, that has never exhibited the same behavior, I started getting the same pulsing, clip level spikes on the digital output. This venue has, since my last visit, extensively upgraded their lighting systems, both on the stage in in the auditorium and added a WHOLE LOT of wi fi access points.

Any of you have similar experiences using the digital output of these consoles?

I've borrowed a different coax to optical converter to try this weekend, hoping that the old M Audio might just have been bounced around too much over the years.
Click to expand...

Never used the Yamaha 01V 96 v2 but have a question regarding the M-Audio converter. I have one that converts digital rca to toslink optical digital - is that the one you're referring too? (a CO2 I think) Next question - if that is the one - how do you get optical toslink into your MacBook Pro?
 
Lee Brenkman said:
At two separate venues where I work the FOH mixer is a Yamaha 01V 96 version 2.

Because i am expected to make digital archive recordings of the concerts and all of the analog outputs are in use doing the house sound and four monitor mixes I have, for a couple of years now, been using the coaxial digital 2 track output to feed, through an M Audio coax to optical converter, my Mac Book Pro to make the two track recordings.

At one venue back in January the digital output, so connected, starting producing clip level spikes on the recording. I thought it might be a problem with the mixer itself and reverted to their older recording technique of mixing a stereo microphone with the feed to the main PA using a Mackie 1202.

Now, at the other venue, and using a completely different O1v 96 but the same converter, that has never exhibited the same behavior, I started getting the same pulsing, clip level spikes on the digital output. This venue has, since my last visit, extensively upgraded their lighting systems, both on the stage in in the auditorium and added a WHOLE LOT of wi fi access points.

Any of you have similar experiences using the digital output of these consoles?

I've borrowed a different coax to optical converter to try this weekend, hoping that the old M Audio might just have been bounced around too much over the years.
Click to expand...

Sounds like a clock or sync problem. What changed on your computer?

Sent from my XT907 2
 
Re: Yamaha 01V 96 v2 digital output weirdness

Lee Brenkman said:
At two separate venues where I work the FOH mixer is a Yamaha 01V 96 version 2.

Because i am expected to make digital archive recordings of the concerts and all of the analog outputs are in use doing the house sound and four monitor mixes I have, for a couple of years now, been using the coaxial digital 2 track output to feed, through an M Audio coax to optical converter, my Mac Book Pro to make the two track recordings.

At one venue back in January the digital output, so connected, starting producing clip level spikes on the recording. I thought it might be a problem with the mixer itself and reverted to their older recording technique of mixing a stereo microphone with the feed to the main PA using a Mackie 1202.

Now, at the other venue, and using a completely different O1v 96 but the same converter, that has never exhibited the same behavior, I started getting the same pulsing, clip level spikes on the digital output. This venue has, since my last visit, extensively upgraded their lighting systems, both on the stage in in the auditorium and added a WHOLE LOT of wi fi access points.

Any of you have similar experiences using the digital output of these consoles?

I've borrowed a different coax to optical converter to try this weekend, hoping that the old M Audio might just have been bounced around too much over the years.
Click to expand...

I had a lot of issues with my M-Audio Firewire 1814 interface after upgrading the OS on my laptop. M-Audio tends to be an OS or two behind with their drivers. If it's not a clock issue, I'd look there next.
 
Re: Yamaha 01V 96 v2 digital output weirdness

Yes, the converter is an M Audio CO2

My older MacBook Pro has both audio input and output connectors.

The input accepts optical inputs.

I have not changed any settings on the computer or either 01V 96. But I will go through all of the DIO settings to double check.

I initially suspected the RatShack power supply that replaced the original one that came with the converter but the voltage, current and polarity on that are correct and I have recorded at my home using one of the 01Vs and that converter/powersupply combination with no difficulties.
 
Re: Yamaha 01V 96 v2 digital output weirdness

Lee Brenkman said:
Yes, the converter is an M Audio CO2

My older MacBook Pro has both audio input and output connectors.

The input accepts optical inputs.

I have not changed any settings on the computer or either 01V 96. But I will go through all of the DIO settings to double check.

I initially suspected the RatShack power supply that replaced the original one that came with the converter but the voltage, current and polarity on that are correct and I have recorded at my home using one of the 01Vs and that converter/powersupply combination with no difficulties.
Click to expand...

since it's not a firewire or usb converter, the OS of the MacBook shouldn't effect anything.

My bet would be on maybe the optical cable getting hinky, or the optical input on the macbook getting hinky. Or, as has been stated, the clock settings in the MacBook could have changed somehow. I doubt this is related to the Mixers since you've seen this behavior on two different mixers in two different environments. Troubleshooting 101 tells me that you should focus on what is common to both, i.e. the converter, cables, and macbook. My money is on optical cable or optical input on the MacBook first, and converter second.

FWIW, i'm using an M-Audio Firewire Audiophile converter which has an s/pdif input and plugs into my MacBook via Firewire. Even on OS 10.8 the s/pdif works just fine. got it off eBay a few weeks ago for like 30 bucks....
 
Re: Yamaha 01V 96 v2 digital output weirdness

If the clock isn't syncing, you shouldn't get ANY audio. That doesn't sound like the problem. It does sound like there is data loss or corruption somewhere, causing the clicks and pops. A dirty end on the optical cable can certainly cause this, or a poor connection on the RCA side could as well. Of course, the converter could be failing as well.
 
Re: Yamaha 01V 96 v2 digital output weirdness

Brian jojade said:
If the clock isn't syncing, you shouldn't get ANY audio.
Click to expand...

No, I have lost clock during a show before and the audio continued to pass. Instead of the remote preamps supplying the clock as it should have, the o1v96 went to its internal clock and the preamps ran on theirs. They were all still at 48k, but not synced. I got a few random pops and clicks until I found the cable issue and fixed it. However, audio continued to work, just with a few extra noises.
 
Re: Yamaha 01V 96 v2 digital output weirdness

I also suspect optical issues if you are using the same cable all the time change it if a different cable then check the jacks on the devices tiny bits of dirt or a wor mechanical connection can cause this kind of thing. Is there a toslink in without a cover on it sometimes a bright light shining in there can cause noise if the interface ha been set to monitor digital in. G
 
Re: Yamaha 01V 96 v2 digital output weirdness

Hi Lee,

I'm using three 01V96s right now at music camp.
For the concert venue I have to do archival recordings and for several years have been using the Coax Digital out to an M-Audio Microtrack.
Near as I can tell, the 01V96s have been rock solid.
The Microtracks work fine, as long as I remember to format the media in the recorder.
As others have noted, cabling/dirt may be an issue.

If you figure it out, please let us know!

Thanks and good health, Weogo
 
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