The Abbey Road reverb EQ curve (roll off below 600 Hz and above 10 kHz) makes reverb blend smoothly without muddying the mix

A classic technique from EMI/Abbey Road Studios used on their reverbs since the 1960s: apply an EQ curve to the reverb send or return that rolls off low frequencies below ~600 Hz and high frequencies above ~10 kHz. This prevents reverb from adding muddiness (low-end reverb is almost always unwanted) and from being too bright and prominent. For drums, roll the high end off even further — to 6 kHz, 4 kHz, or even 2 kHz — to get depth without the ambience calling attention to itself. For vocals, add an additional midrange scoop around 2 kHz (where consonants live) to keep the reverb from muddying the clarity. The result: reverb adds depth and environment without any single frequency band standing out. The same EQ logic applies to delay and modulation returns.

Examples

Abbey Road instruments curve: HPF at 600 Hz, LPF at 10 kHz on the reverb return. For room mics on drums: LPF at 2-4 kHz produces depth without obvious reverb. For vocal reverb: HPF at ~200 Hz, LPF at ~10 kHz, -2 dB notch at 2 kHz for consonant clarity.

Assessment

Describe the complete EQ setup for a reverb return being used on (1) a lead vocal and (2) a drum overhead. For each, specify which frequencies to cut and the reason for each cut.