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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

Good idea!

While I didn't dissect them, I did measure the output impedance on the sources I was using and they all seemed to be a pretty flat 100 ohms so I just assumed that they had an internal series resistor. As near as I could tell the ~600ohm total load wasn't causing distortion problems but it's probably on the edge unless they used good line drivers.

Had I heard problems my plan was to just use a bigger build-out and turn up the volume. The line really only needs to be matched at the load end.

But using a cap is a good idea and may make the scheme usable with a wider variety of equipment and lower Z lines. Perhaps a COG mono would do the job. I'd be loath to add much dielectric absorption.

What I did probably isn't optimal. I'm not a very good audiophile as I tend to stop messing with the equipment when I'm happy with the sound. These days it's computer software, the wretched "players" sound varies with type, versions, settings, lunar phase... At least they are easy to A/B test.

Rick



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