This measure indicates the capacity of the cartridge to reproduce the frequencies and how it will play. This feature must necessarily contain the variation margin expressed in decibels (dB) of the frequency that responds to greater amplitude and the frequency at which the amplitude is minimal. In stereo cartridges It is sufficient that the indicated limits are between 20 Hz and 20000 Hz, but attention if it is specified +/-1 dB in a cartridge and +/-3 dB in another; the smaller number indicated by the variation range will be better. If this indication does not appear, it is necessary do not trust in the cartridge.
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