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This Post Has Been Edited by the Author
In Reply to: RE: Should I get my Tympani I-Ds rebuilt? posted by Boulder Bob on September 07, 2016 at 19:42:30
QR stands for "quasi ribbon." The earlier Magnepan models used round wire aluminum voice coils. With the .7 models, Magnepan changed from round wire to a flat ribbon. This covers more of the diaphragm area and sounds a bit better than the round wire did. Some guys here have replaced round wire with flat when rebuilding their old Maggies -- Magnepan will sell you the parts. However, results aren't guaranteed -- when you depart from the original as you could be changing compliance, impedance might not be quite the same, etc. So it's something of an experiment.
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