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10. OPTIONS
10.2.2. Subsonic filter
Warped records and unfavorable cartridge/pickup arm combinations can cause low-frequency
interference that impairs bass reproduction. These low-frequency levels can be attenuated with the
switchable subsonic filter. The roll cutoff frequency is outside of the audible range at 15 Hz. Condition
on delivery: Subsonic filter on.
Phono-frequency response with and without subsonic filter
The frequency range without subsonic filter is very linear and extremely low (red graph). With the
subsonic filter (cyan graph), bass reproduction is not limited by the low cutoff frequency (-3 dB at 15
Hz).
