Ideally, you'd want to drive 35 feet of balanced interconnect with the low impedance source ( say below 150 ohms or so). How low depends upon interconnect capacitance. You can try Jensen output transformer to convert SE to Balanced at the phono-stage output, if phono output is SE.
I'd try SE/Balanced transformer into 35' balanced cable first. Add low output Z buffer later if there are some HF losses.
You don't want to put volume control on the source (phono) end. If you do, you push very low level (attenuated) signal through the long lossy interconnect. Hence, some signal integrity issues. You'd want to go into long interconnect with strong signal.
Good place to place volume control is at the crossover input. Or even better to have separate linked volume controls for each amp (all 6 of them). This way you get maximum S/N ratio.
Sergey |
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