A four-band inductor-based EQ. Designed to work in standard "500"
A modern update of the classic "swinging inputs" console EQ, with four easy
to use bands. Each band uses a high quality inductor and carefully selected caps
to give two switchable frequencies. The bands are carefully shaped and spaced to
be musical, even at full boost or cut. The highest band can be switched from
bell to shelf, to boost frequencies extending well beyond 20kHz. The lowest band
can also be switched from bell to shelf, reaching down into the subsonic range.
There are illuminated pushbuttons for additional fixed low (red) and
high (yellow) cut filters. A relay true bypass (green) allows for easy
comparison with unprocessed source material. With the low and high cut switched
out, and all four bands set to 0, the frequency response is +/- 0.25dB from 15Hz
to 25kHz, and -3dB at 60kHz.
With specialized input and output
transformers, the Odd has plenty of headroom, even at full boost. The entire
circuit is discrete, with no electrolytic capacitors in the signal path, and no
servo amps. With only two active stages, the current draw is low enough to work
in any rack, and leave plenty of juice for other modules.
High frequency switchable from bell to shelf High frequency 12kHz / 8kHz
High-mid frequency 4kHz / 1.8kHz Low-mid frequency 650Hz / 300Hz Low
frequency 150Hz / 75Hz Low frequency switchable from bell to shelf Each
band boost or cut by 12dB Switchable High cut at 12kHz Switchable Low
cut 60Hz Relay True Bypass Tricolor LED level meter Transformer
balanced in and out Discrete signal path No electrolytic caps in signal
path Current consumption: 60mA Over Current Resettable Fused (prevents
any module problem from affecting your rack) ROHS - Lead Free
For easy serviceability and tweaking, the Purple discrete opamps can be
replaced with any standard discrete opamp or a DIP-8 IC.