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Sound Reinforcement - Forums for Live Sound Professionals - Your Displayed Name Must Be Your Real Full Name To Post In The Live Sound Forums => LAB: The Classic Live Audio Board => Topic started by: Pete Erskine on January 27, 2013, 03:01:59 PM
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This is a very simple Stereo Audio out box for Mac/Windows/Lunix USB audio out. It uses native drivers in all flavors of OS, has a ground lift switch and mono/Stereo switch and is powered from the USB. It is made by Mark Fiore. He tells me that a 2X2 version with 2 audio inputs is coming mid year.
Input: USB "B" connector (1.5' USB cable included)
Output: 10k ohm balanced XLR outputs :: Pin 2 + :: Pin 3 - :: Pin 1 GND (switchable)
Freq Response: 20 - 20Khz
THD @1Khz: .001
Dimensions: 3.375"W x 3.375"D X 1.5"H (85mm x 85mm x 39mm)
http://www.blackdogaudio.net/ (http://www.blackdogaudio.net/)
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Pete,
Did you ever try the Peavey USB-P? It has been recommended on here before.
Still, it's a nice piece you tout - I may look into one for the future…
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Did you ever try the Peavey USB-P? It has been recommended on here before.
Does look nice too. It is permanent ground lift whereas the Black dog has a switch but i am sure doesn't make a difference to line level audio.
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Does look nice too. It is permanent ground lift whereas the Black dog has a switch but i am sure doesn't make a difference to line level audio.
Yeah, that was the main difference I noticed between the two units, too.
I wonder what transformer was utilized? Lundhal, Jensen, "custom", etc.?
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I wonder what transformer was utilized?
They aren't labeled but are substantial.
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Input: USB "B" connector (1.5' USB cable included)
Output: 10k ohm balanced XLR outputs :: Pin 2 + :: Pin 3 - :: Pin 1 GND (switchable)
Freq Response: 20 - 20Khz
THD @1Khz: .001
Dimensions: 3.375"W x 3.375"D X 1.5"H (85mm x 85mm x 39mm)
Is it really a 10KΩ output? That's awfully high if you plan to run any length of cable. Seems like a DI-type transformer at the output to drop it down to 150Ω would be a good idea. It wouldn't be line level any longer, but it shouldn't be a problem to get 15 dB or so of gain back in most consoles.
Still, it looks like they've worked out most of the other requirements.
GTD
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They aren't labeled but are substantial.
It is a custom wound Edcor.
Mac
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At $150, the price is nice.
Would be interesting to do a comparison with the Peavey.
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Is it really a 10KΩ output? That's awfully high if you plan to run any length of cable. Seems like a DI-type transformer at the output to drop it down to 150Ω would be a good idea. It wouldn't be line level any longer, but it shouldn't be a problem to get 15 dB or so of gain back in most consoles.
Still, it looks like they've worked out most of the other requirements.
GTD
It's a typo. Output impedance is spec'd at 150 ohms. i contacted the company and i think they will be updating the web site accordingly.
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Much like ARX USB-DIs which I use regularly. Switchable earth lift, fully balanced outputs. Available at fixed line level, or with analog volume control. There is also a 2x2 available
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Much like ARX USB-DIs which I use regularly. Switchable earth lift, fully balanced outputs. Available at fixed line level, or with analog volume control. There is also a 2x2 available
The Audibox USB I/O looks nce - hard to find in USA though.
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The Audibox USB I/O looks nce - hard to find in USA though.
Wouldn't this work?
http://www.markertek.com/Audio-Equipment/Audio-Interface/Computer-Audio-Interface/ARX-America/ARX-AUDIBOX-USB-DI.xhtml?utm_medium=shoppingengine&utm_source=googlebase&cvsfa=3786&cvsfe=2&cvsfhu=4152582d5553422d31&gclid=CJnF3bjokrUCFcWPPAodDlcAZw
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That's a good source-Here is a link for it
http://www.markertek.com/Audio-Equipment/Audio-Interface/Computer-Audio-Interface/ARX-America/ARX-AUDIBOX-USB-I-O.xhtml?ARX-USB-3 (http://www.markertek.com/Audio-Equipment/Audio-Interface/Computer-Audio-Interface/ARX-America/ARX-AUDIBOX-USB-I-O.xhtml?ARX-USB-3)
Blackdog has a 2x2 coming. We'll see if it's a little more inexpensive. The Aussi products seem to be 1.5X the cost of Blackdog.
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Where are the decoder electronics, under the transformer PCB?
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Where are the decoder electronics, under the transformer PCB?
Probably. Google USB audio circuit and there are a lot of schematics
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The Audibox USB I/O looks nce - hard to find in USA though.
These are pretty awesome. Platform independent, sound nice, driverless install, and the I comes in handy more often than you think. I'd recommend them to anyone in a heartbeat, and when i do a show I have two stashed away just in case I need them.
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[...] and when i do a show I have two stashed away [...]
You still do shows, Dave??? ;D
Agreed though, inputs quite useful. My last use was a presenter 'Skype-ing' into a conference with 500 pax. 8 minutes notice! ARX was flawless