Trench Recordings
Well-known member
I have this SSI mixer from the late 60s / early 70s. Sounds great, uses melcor 1731 DOAs. I love the thing and use it every day. But I does have its problems.
Hoping some of you guys might have some input or suggestions on how to improve it.
The line inputs are unbalanced. Some gear works great with it. Some gear wont pass signal at all with it like my Studer A80. A80 Output to SSI mixer line in does not work ?
Other gear introduces ground hum like the output of my converters, Apogee AD8000. The ground hum stacks up for each connection made. I would love to use this as a summing mixer from my converters but the ground hum !
I think the problem maybe that there is no line input transformers in the design ? so I was thinking of installing some Lundal transformers (maybe LL1540) right after the line input connection.
Would that help the ground hum issue ?
Hoping some of you guys might have some input or suggestions on how to improve it.
The line inputs are unbalanced. Some gear works great with it. Some gear wont pass signal at all with it like my Studer A80. A80 Output to SSI mixer line in does not work ?
Other gear introduces ground hum like the output of my converters, Apogee AD8000. The ground hum stacks up for each connection made. I would love to use this as a summing mixer from my converters but the ground hum !
I think the problem maybe that there is no line input transformers in the design ? so I was thinking of installing some Lundal transformers (maybe LL1540) right after the line input connection.
Would that help the ground hum issue ?