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Zu Audio loading resistors

Zu is now offering matched high wattage resistors to put on the speaker terminals in parallel to smooth out the impedance curve of the Druid and Soul Superfly/Supreme models.  Has anyone done this before?  Are there any downsides to doing this?  I've had some amps in the past that didn't seem to like the Zu impedance curves with some bloated/distorted bass in heavy bass passages, so I figured it was something to do with that.  My SIT-2 loves the Soul Supremes, but I'm wondering if this will make them even better?

Curious to know what the consensus is for these.
marlin38

Showing 1 response by gdnrbob

gdnrbob
4,485 posts
 
I was surprised to see the impedance variation on the graph.
Smoothing that degree of variation should help an amplifier with playback. And, I can't think of any downside effects, unless you lowered impedance below 4 ohms-which some amps might have a problem with.

I wonder if a pair of Zero Autoformers would the same? Albeit, at a higher cost.
Bob
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