Derek H Posted May 15 Report Share Posted May 15 OK, did some digging for you and figured it out.. Read pages 109 and 110 from the 664 manual. https://cdn.sounddevices.com/wp-content/uploads/2019/01/664-ug1.10.20.pdf Look at the second paragraph here: So this explains it. The difference is expected and due to impedance shift. You say the Master knob on the 552 has no effect? That's too bad. Perhaps you could have a custom cable made that takes the outputs of the 552 from either the Hirose 10-pin or from the two XLR or TA3 mix outs (wouldn't matter which just an output that can give you the full line level) and then take that into the 664's link input following the wiring diagram in the manual. The Master knob would then work to make any trim adjustments between the two machines. I would still check with Sound Devices to make sure this would work or if you need that 10K resistor in the TA5 to enable the connection or something. Good luck! I think the best solution, that I'm sure you've considered, would be to buy a used CL-6 for the 664. Or a CL-12 if you can find it and you're working in a stationary mode. Of course that will add more bulk to the setup. What you're trying to do was not originally part of the plan for any of these machines. The link IO port is a nice addition but that was made without consideration for the fact that you might want to do what you're doing with the direct outs. Quote Link to comment Share on other sites More sharing options...
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