Rane PEQ 55 Operator's Manual

GAIN LOW SHELF BW GAIN
0 1 0
-6 6 .5 1.5 -6
OL
-24 12 1 2 -24
/
12
dB oct dB
FREQUENCY
500
A1 A2
250 1k
BYPASS Hz x0.1 BYPASS
x1
125 2k
x10
GAIN LOW SHELF BW GAIN
0 1 0
-6 6 .5 1.5 -6
OL
-24 12 1 2 -24
/
12
dB oct dB
FREQUENCY
500
B1 B2
250 1k
BYPASS Hz x0.1 BYPASS
x1
125 2k
x10

Quick Start

Everyone knows how to use a parametric equalizer right? You set the filter GAIN to its maximum and turn the FRE-
QUENCY control until you find a pesky resonance that, when excited by a few extra dB, blows up your speaker or causes
permanent hearing damage to the listening audience. There. Problem solved. What did you say?
Connect the PEQ's Inputs and Outputs to virtually any type of audio device using XLR, ¼" TRS or Euroblock connec-
tors. You may use any combination of Outputs simultaneously if desired, but don't try to save a few bucks by plugging
multiple sources into the Inputs and expecting them to mix — they won't. It will simply sound bad and no amount of EQ
will fix it. Polarity convention on the XLR jacks is pin 2 positive, pin 3 negative and pin 1 shield (chassis ground).
With the wiring out of the way it's time to polish your golden ears and start making adjustments. Fire up some music
and adjust the input and output LEVELs for good headroom and optimum signal-to-noise. Always heed the OL (overload)
indicator! And check to make sure the channel BYPASS/EQ and individual filter BYPASS switches are properly engaged,
and that the FREQUENCY multiplier switch (x0.1, x1, x10) is in the desired position.
Filter bands A1 and B1 feature a switchable LOW SHELF response. Bands A5 and B5 feature a switchable HIGH
SHELF response. Further flavor the mix using the channel TONE controls and CUT FILTERS.
The PEQ's A/B switches are an especially unique feature. Understand their use and you'll unlock some of the device's
analog-controlled digital magic. Misunderstand their use and you're in for a few surprises. Repeat after me: either audio
channel can follow either set of filters, as set by the A/B switch.
For example, in normal dual 5-BAND mode set the top row switch to A (the Left channel), and the bottom row switch
to B (the Right channel). These switches also affect the CUT FILTERS, TONE controls and LEVELS.
Or perhaps you want to equalize both sides of a stereo system identically using one set of controls. Set both switches to
A and now the top row of filters controls both audio channels. Set both switches to B and use the bottom row of filters to
create a totally different EQ curve. Do an A/B comparison of the two curves by toggling the (you guessed it) A/B switches.
Try doing that with an analog EQ.
Need more filters? Switch to 10-BAND mode and you now have ten fully overlapping filters to use on a stereo or mono
source. The outputs mute momentarily when switching between 5- and 10-BAND modes.
Contents
Quick Start ................................................................................................................................................................... 1
Controls and Operation ............................................................................................................................................ 2
Rear Panel Connections ........................................................................................................................................... 4
Applications ................................................................................................................................................................. 4
Dual Mono 5-Band Operation .............................................................................................................................. 4
Linked Stereo 5-Band Operation ........................................................................................................................ 5
Mono or Linked Stereo 10-Band Operation .................................................................................................... 5
Inserting the PEQ 55 on an Instrument Channel or Group Output ........................................................... 6
Using the A / B Controls to Switch Between Two Different EQ Settings ............................................... 6
PEQ 55 Settings Templates ..................................................................................................................................... 7
Additional Resources ................................................................................................................................................ 8
WEAR PARTS: This product contains no wear parts.
OPERATORS MANUAL
BW GAIN BW
1 0 1
6 .5 1.5 -6 6 .5 1.5
OL OL
12 1 2 -24 12 1 2
/ /
12 12
oct dB oct
FREQUENCY FREQUENCY
500 500
A3
250 1k 250 1k
Hz x0.1 BYPASS Hz x0.1
x1 x1
125 2k 125 2k
x10 x10
BW GAIN BW
1 0 1
6 .5 1.5 -6 6 .5 1.5
OL OL
12 1 2 -24 12 1 2
/ /
12 12
oct dB oct
FREQUENCY FREQUENCY
500 500
B3
250 1k 250 1k
Hz x0.1 BYPASS Hz x0.1
x1 x1
125 2k 125 2k
x10 x10
GAIN BW GAIN HIGH SHELF BW
0 1 0 1
-6 6 .5 1.5 -6 6 .5
OL OL
-24 12 1 2 -24 12 1
/ /
12 12
dB oct dB oct
FREQUENCY FREQUENCY
500 500
A4 A5
250 1k 250 1k
BYPASS Hz x0.1 BYPASS Hz
x1
125 2k 125 2k
x10
GAIN BW GAIN HIGH SHELF BW
0 1 0 1
-6 6 .5 1.5 -6 6 .5
OL OL
-24 12 1 2 -24 12 1
/ /
12 12
dB oct dB oct
FREQUENCY FREQUENCY
500 500
B4 B5
250 1k 250 1k
BYPASS Hz x0.1 BYPASS Hz
x1
125 2k 125 2k
x10

PARAMETRIC EQUALIZER

TONE CUT FILTERS LEVEL BYPASS
+ + +
1.5 6 6 240 5k 12 12
120 7k
2
0 0 60 10k 0 0
-12 -6
30 14k
x0.1
∞ ∞ ∞ ∞
x1 15 20k 12 12
+
x10
LOW MID HIGH LOW HIGH IN OUT
BYPASS
+ + +
6 6 240 5k 12 12
1.5
120 7k
2
0 0 60 10k 0 0
-12 -6
30 14k
x0.1
∞ ∞ ∞ ∞
15 20k 12 12
x1 +
x10 TONE CUT FILTERS LEVEL
PEQ 55
A 10-BAND
EQ B 5-BAND
IN
A
-3 0 +3 +6 +12 OL
OUT
PEQ 55
A
PARAMETRIC
EQUALIZER
EQ B
IN
B
-3 0 +3 +6 +12 OL
OUT
POWER
Manual-1