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INWARD CONNECTION LINE MIXER ++++++++ Digital Converters
Old 1st April 2008
Gear Head


Any Mix690 users getting a 60hz hum.?

Going out DA 16ch to my line mixer.....then 690 to my monitors. (BUZZ)

Buzz goes away when I go directly from PT to monitors.
Old 1st April 2008
Gear Addict
trustyjim's Avatar

I purchased a Mix690 about a month ago and I have noticed the 60hz hum too. I keep meaning to contact Steve to see if it is a problem with the unit or if I need to change my grounding config.

I am getting a very low level 60hz hum introduced on the mix bus. I'm not getting hum from any of my other gear.

I am feeding the unit with an Apogee DA-16X into a Shorti patchbay normalled into the Mix690. All the normals are configured as "Grounds vertically strapped" for now. I need to try changing them to "Common ground" or "Grounds isolated" to see if it makes a difference.

Let me know if you figure it out.
Old 28th September 2008
Gear Addict
trustyjim's Avatar

Just wanted to post an update about the 60hz hum. I finally called Steve Firlotte, who offered to take a look at it. He found one of the screws that holds the faceplate on was making contact with a pan pot creating a ground loop (it was the screw under pan pot 5). So he filed the screw down and presto! no more hum. Man I love my Mix690. And Steve Firlotte took great care of me while we worked through the problem.
Old 30th September 2008
Gear Maniac
TapeOp's Avatar

Does anyone know why Inward Connections stoped manufacturing?

They had some serious stuff...
Old 6th October 2008
Gear Maniac
TapeOp's Avatar

So nobody knows...
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