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Point Before: Channel mic/line preamp,
Channel

INSERT SEND

and

RETURN

Point After:

MUTE

PFL

feed to Channel

Meter

and

SOLO

The SR40•8 has a 4-band, dual-mid-sweep

equalization:

shelving at 12kHz;

HI-MID

bandpass, swept from 500Hz to 15kHz;

LOW-

MID

bandpass, swept from 45Hz to 3kHz; and

LOW

shelving at 80Hz. Chances are, it’s all

the equalization you’ll ever need. Shelving
means that the circuitry boosts or cuts all
frequencies past the specified frequency. For
example, the SR40•8’s

LOW

shelving

boosts (or cuts) bass frequencies starting at
80Hz, and all frequencies below. Bandpass
means that gain levels form a “hill” around
the center frequency.

With too much equalization, you can screw

things up royally. We’ve designed a lot of boost
and cut into each equalizer circuit because we
know everyone will occasionally need that. But
if you max the

on every Channel, you’ll get

mix mush. Equalize subtly and use the left sides
of the knobs (cut), as well as the right (boost).
If you find yourself repeatedly using full boost or
cut, consider altering the sound source, such as
placing a mic differently, trying a different kind
of mic, changing the strings, or gargling.

Be aware:

The

HI-MID

and

LOW-MID

fre-

quencies can be set to the same frequencies as
the

and

LOW

shelving

s. This is usually

not a problem, but it is unnecessary by virtue
of being redundant, and can sometimes cause
clipping. For instance, if you fully boost the

LOW-MID

, with the

FREQ

set at 80Hz, and

fully boost the

LOW

shelving, preset at 80Hz,

you’ll be asking for 30dB of gain at 80Hz! If you
started out with signal with a 0dB level at that
frequency, you’d be clipping for sure.

HI 12K

The

HI EQ

provides up to 15dB boost or cut

at 12kHz, and is flat (no boost or cut) at the de-
tent. Use it to add sizzle to cymbals, an overall
sense of transparency, or an edge to keyboards,
vocals, guitar, and bacon frying. Turn it down a
little to reduce sibilance, minimize high fre-
quency leakage, or to mask hiss caused by a
frugal client’s fifty-cent cassette tape.

100

10k

20k

–15

–10

–5

+10

+15

HI MID and

FREQ

The

HI-MID EQ

has a fixed bandwidth of 1.5

octaves. The

HI-MID

knob sets the amount of

boost or cut up to 15dB, and is flat at the center
detent. The

FREQ

knob sets the center fre-

quency, sweepable from 500Hz to 15kHz.

100

10k

20k

–15

–10

–5

+10

+15

100

10k

20k

–15

–10

–5

+10

+15

Most of the root and lower harmonics that

define a sound are located in the 100Hz–
10kHz frequency range, and you can create
drastic changes with these four midrange
knobs. Many engineers use mid

to cut mid-

range frequencies, not boost them. One
popular trick is to set mid gain fully up, turn
the associated

FREQ

knob until you find a

point where it sounds just terrible, then back
the mid down into the cut range, causing those
terrible frequencies to disappear. Sounds silly,
but it works. Sometimes.

150

220

350

800

+15

-15

+15

-15

+15

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