Unlike other modules for the 5088, the Shelford 5051 requires its own standalone
power supply to operate. The power supply features proprietary 4-pin polarized
outputs at +24 and -24V DC, and will power up to twenty-five 5051 modules.
5051 Features
LINE 1 / LINE 2
Allows you to have two sources pre-patched into the 5051. For example you may
have an outboard Microphone Pre-Amp patched into Line 1 and a DAC channel
from your DAW into Line 2.
EQ IN
Engages all bands of the equalizer except the hpf.
HF
Adjusts up to 15 dB of boost or cut at selected high frequencies.
8K /16K
With the switch out, the center or corner frequency of the high band is 8 kHz. With
the button pressed, the center or corner frequency changes to 16 kHz. Between this
switch and the HI PEAK switch, you have 4 different EQ curves to finesse the high
frequency content.
HI PEAK
When the button is out, the high frequency band operates in shelf mode, boosting
or cutting above the corner frequency at approximately 6 dB/octave. Below the
corner frequency the amount of boost or cut gradually diminishes. With the HI
PEAK button pressed, the high frequency band changes to peak mode with a bell
shaped boost or cut curve. The Peak mode utilizes an inductor and capacitor circuit
to create the bell-shaped curve.
MID FREQ
The MID FREQ rotary switch has 6 positions to select the center frequency of the
mid band EQ stage. This circuit utilizes an inductor and capacitors to shape the EQ
curve, the same way as Rupert Neve’s console designs of the 70’s. The frequencies
chosen are 200 Hz, 350 Hz, 700 Hz, 1.5kHz, 3 kHz and 6 kHz. 200 Hz is
especially useful for cuts on individual tracks within a dense mix.
MID HI Q
The resonance or Q of the mid band at maximum boost is typically 2 when the
button is out. When the MID HI Q is pressed at maximum boost, the Q narrows
to approximately 3.5. The Q widens nicely with less boost or cut as is typical for
passive EQ circuits. The Q tends to be slightly wider when the frequency is set
lower, and slightly higher for higher frequency selections. The Q is also narrower
for cuts than it is for boosts and the mid band is non-symmetrical by design.
MID LEVEL
Adjusts up to 15 dB of boost or cut at the selected mid frequencies. Remember to
