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In Reply to: RE: Subsonic Rumble - follow up to my earlier post of 04/14/08 posted by HGS on April 18, 2008 at 03:57:56
Of course the F-mods will kill the high end when connected to the output of the phono cartridge, they're too low of an impedance for the cartridge to drive.
F-mods cannot be used with passive preamps or TVCs either.
F-mods have drooping response at their rated cut-off point even when driven properly, they're passive.
You need an active filter (I linked to a good one).
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