Mod Detail: Bass response improvement -
All analog systems exhibit phase shift at their cut-off frequencies. So one of my modification strategies is to lower the system cut-off frequency found in microphones. A very low cut-off improves the amplitude and phase response of bass notes in the audible range because filter effects are shifted to a lower frequency than the bass program material being recorded. Bass has more impact as a result.
Here is a stock MXL V67g and OktavaMod MXL V67g used to record a bass-rich Udu drum. The same sort of improvement would be heard on kick drum, toms or bass string plucks.
SOUND SAMPLE: V67g Stock, Udu drum SOUND SAMPLE: OktavaMod V67g, Udu drum