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Superlux HD 681

Superlux HD 681

See usage instructions for more options and info.

Parametric EQs

In case of using parametric equalizer, apply preamp of -6.4dB and build filters manually with these parameters. The first 5 filters can be used independently. When using independent subset of filters, apply preamp of -6.4 dB.

Type Fc Q Gain
Peaking 14 Hz 0.2 6.4 dB
Peaking 579 Hz 0.67 3.6 dB
Peaking 917 Hz 0.73 -3.5 dB
Peaking 5116 Hz 4.66 -4.7 dB
Peaking 20443 Hz 0.09 -3.8 dB
Peaking 55 Hz 4.5 -1.0 dB
Peaking 2461 Hz 3.64 -1.8 dB
Peaking 3893 Hz 3.58 3.2 dB
Peaking 4640 Hz 5.97 -1.9 dB
Peaking 7582 Hz 5.23 -2.0 dB

Fixed Band EQs

In case of using fixed band (also called graphic) equalizer, apply preamp of -7.5dB (if available) and set gains manually with these parameters.

Type Fc Q Gain
Peaking 31 Hz 1.41 7.0 dB
Peaking 62 Hz 1.41 1.5 dB
Peaking 125 Hz 1.41 1.9 dB
Peaking 250 Hz 1.41 0.5 dB
Peaking 500 Hz 1.41 2.1 dB
Peaking 1000 Hz 1.41 -1.5 dB
Peaking 2000 Hz 1.41 -0.9 dB
Peaking 4000 Hz 1.41 -0.6 dB
Peaking 8000 Hz 1.41 -3.1 dB
Peaking 16000 Hz 1.41 -4.2 dB

Graphs