Avalon U5 Freq/Phase Curves

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amplexus

Well-known member
Joined
Jan 11, 2018
Messages
333
Location
Ontario, Canada
Just for fun. Slow day in the shop and I'm pulling apart my studio's DI/mic PSU cart, and i wanted to see how flat the tiny transformers in those Radial SGI Rx units really were (Turns out pretty good when loaded). Then i thought... why not see how the U5 does. Then i thought... why not trace the Tone curves and see how close they are to what Avalon publishes. Unsurprisingly close, but the phase response is interesting to see.

Anyhow, here they are. Ignore the little dips and pops up top I think that's noise in my test setup.

Tone bypassed. Pretty impressive, basically ruler flat response. Phase shift is a little wonky below 100Hz.
scope_4.jpg

And then the tone curves. In order, 1 through 6. Phase shift predictably goes right to shit.
scope_5.jpegscope_6.jpegscope_7.jpegscope_8.jpegscope_9.jpegscope_10.jpeg
 

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