Page 1
PEQ 55
PARAMETRIC EQUALIZER
Page 2
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance with manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, registers, stoves, or other apparatus (including ampliers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. e wide blade or third prong is provided for your safety. If the provided plug does not
t into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord and plug from being walked on or pinched particularly at plugs, convenience receptacles, and the point where it exits from
the apparatus.
11. Only use attachments and accessories specied by Rane.
12. Use only with the cart, stand, tripod, bracket, or table specied by the manufacturer, or sold with the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged in any way, such as power supply
cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
15. e plug on the power cord is the AC mains disconnect device and must remain readily operable. To completely disconnect this apparatus from
the AC mains, disconnect the power supply cord plug from the AC receptacle.
16. is apparatus shall be connected to a mains socket outlet with a protective earthing connection.
17. When permanently connected, an all-pole mains switch with a contact separation of at least 3 mm in each pole shall be incorporated in the electrical installation of the building.
18. If rackmounting, provide adequate ventilation. Equipment may be located above or below this apparatus, but some equipment (like large power
ampliers) may cause an unacceptable amount of hum or may generate too much heat and degrade the performance of this apparatus.
19. is apparatus may be installed in an industry standard equipment rack. Use screws through all mounting holes to provide the best support.
WARNING: To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture. Apparatus shall not be exposed to dripping
or splashing and no objects lled with liquids, such as vases, shall be placed on the apparatus.
NOTE: is equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. ese
limits are designed to provide reasonable protection against harmful interference in a residential installation. is equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment o and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAU TION: Changes or modications not expressly approved by Rane Corporation could void the user's authority to operate the equipment.
is Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
WARNING
To reduce the risk of electrical shock, do not open the unit. No user
serviceable parts inside. Refer servicing to qualied service personnel.
e symbols shown below are internationally accepted symbols that warn
of potential hazards with electrical products.
is symbol indicates that a dangerous voltage
constituting a risk of electric shock is present within
this unit.
is symbol indicates that there are important
operating and maintenance instructions in the
literature accompanying this unit.
Page 3
OPERATORS MANUAL
Quick Start
Everyone knows how to use a parametric equalizer, right?
You set the filter GAIN to its maximum and turn the FREQUENCY control until you find a pesky resonance that, when
excited by a few extra dB, fries your speaker or causes hearing
damage. ere, 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 connectors.
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 BY PASS/ EQ and
individual filter BY PASS 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
PEQ 55
PARAMETRIC EQUALIZER
response. Further flavor the mix using the channel TONE controls and CUT FILTERS.
e 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). ese switches also affect the CUT FIL-
TERS, 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-BA ND mode and you now
have ten fully overlapping filters to use on a stereo or mono
source. e 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 Dierent EQ Settings ...........................................................6
PEQ 55 Settings Templates ......................................................................................................................................7
Additional Resources ...............................................................................................................................................8
WEAR PARTS: is product contains no wear parts.
Manual-1
Page 4
Controls and Operation
Parametric lter controls
GAIN: Range is +12 dB to -24 dB, with a 0 dB center detent.
BW (bandwidth): Range is 1/12 to 2 octaves with each dot representing ¼ octave.
FREQUENCY: Total range is 12.5 Hz to 20 kHz, with the multiplier switch.
Each Hz multiplier covers a 4 octave range:
x0.1 operates from 12.5 Hz to 200 Hz
x1 operates from 125 Hz to 2 kHz
x10 operates from 1.25 kHz to 20 kHz
Individual switches BY PA SS each filter without affecting the others.
Individual OL (overload) warning indicators light at 0 dBFS (digital clipping).
Low Shelf
Filters A1 and B1 include a LOW SHELF
mode. When the LOW SHELF switch is in, the
yellow indicator is lit and the filter is in LOW
SHELF mode. Filter B1 LOW SHELF mode is
disabled in 10-BAND mode. e BW control has
no effect in LOW SHELF mode. e minimum
Low Shelf frequency is 25 Hz (0.1 multiplier). Settings below 25 Hz default to 25 Hz.
High Shelf
Filters A5 and B5 include a HIGH SHELF
mode. When the HIGH SHELF switch is in, the
yellow indicator is lit and the filter is in HIGH
SHELF mode. Filter A5 HIGH SHELF mode is
disabled in 10-BAND mode. e BW control has
no effect in HIGH SHELF mode.
Tone controls
Independent, 3-band TONE controls are
provided for each channel. e Low-Mid cutoff
is 300 Hz. e Mid-High cutoff is 4 kHz. ese
Tone controls are enhanced, 2nd-order filters. e
HIGH and LOW filters are shelving. Phase shift
is zero degrees with the controls at their center detent. Only the A-channel Tone controls are active
in 10-BAND mode.
+14
+12
+10
+8
+6
+4
+2
0
d
B
u
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
20 20k50 100 200 500 1k 2k 5k 10k
+14
+12
+10
+8
+6
+4
+2
0
d
B
u
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
20 20k50 100 200 500 1k 2k 5k 10k
+10
Low +6, Mid ‘0’, Hi +6
Low +6, Mid ‘0’, Hi +6
+5
d
0
b
u
-5
-10
-15
-20
-25
-30
-35
-40
20 20k50 100 200 500 1k 2k 5k 10k
Low Off,
Low Off,
Mid ‘0’,
Mid ‘0’,
Hi Off
Hi Off
Hz
Hz
, Mid +6, Hi
’
0
‘
Low
Low ‘0’, Mid +6, Hi ‘0’
Low ‘0’,
Low ‘0’,
Mid Off,
Mid Off,
Hi ‘0’
Hi ‘0’
Hz
0
‘
’
Manual-2
Cut Filters
2nd-order Butterworth LOW- and HIGH-
CUT FILTERS are provided for each channel.
e range of the LOW-CUT Filter is 15 Hz to
240 Hz. e range of the HIGH-CUT Filter is 5
kHz to 20 kHz. Only the A-channel controls are
active in 10-BAND mode.
+10
+5
d
0
b
u
-5
-10
-15
-20
-25
-30
-35
-40
20 20k50 100 200 500 1k 2k 5k 10k
Hz
Page 5
In and Out Level controls
LEVEL controls serve three purposes, with the assistance of the In and Out Meters:
1. Adjust the IN signal level for good headroom and signal-to-noise.
2. Adjust the OUT signal level to compensate for changes in signal level due to filter boost/cut
settings.
3. Adjust sensitivity. e operation of the OUT LEVEL control is reversed from the IN LEVEL.
Pushing the control up reduces gain. Pushing the control down increases the gain. To easily
adjust sensitivity without affecting the output signal level, grasp the IN and OUT controls and
move them together. Only the A-channel IN and OUT LEVELs are active in 10-BAND mode.
In and Out Meters
IN and OUT Meters are peak responding and indicate signal level in dBu.
Peak-dBu is held and displayed for 2 seconds. Attack is instantaneous. Decay is 500
ms for a 20 dB step. A and B meters remain active in linked 10-band mode.
EQ Bypass
BY PASS switches have two modes of operation. If the rear
panel switch is set to BYPA S S A LL, all filters and level controls
BYPASS
FILTERSALL
are bypassed. If this switch is set to BY PASS F I LTERS, only
the filters are bypassed. Filters include Parametric, Tone and
Cut. An automatic relay bypass hardwires the Inputs to the
(rear panel switch)
Outputs when the POWER is off.
A / B control switches
A / B switches determine which set of controls is used by channel A and channel
B. ere is a 100 ms mute to allow the filters to settle when the A/B control switch
is changed. e only control not affected by the A / B switches is BYPASS. A / B
control switches allow:
• Independent, dual mono operation
• A/B setting comparison
• 5-Band linked stereo operation (A or B controls affect both channels)
• Two “analog memories”
See the Applications section for example uses of the A / B switches.
GAIN BWLOW SHELF
0
-6 6
12
-24
A1
2502k1k
BYPASS
125
GAIN BWLOW SHELF
0
-6 6
12
-24
B1
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
BYPASS
x1
x10
-6 6
2
-24
BYPASS
x0.1
x1
x10
10-Band mode / 5-Band mode
In 5-BAND mode, the PEQ 55 provides two independent 5-band parametric equalizers. A
or B controls may be used to control each channel as described above. In 10 -BAND mode, both
channels are stereo linked and operation is as follows:
1. All 10 filters affect both A and B Outputs, permitting mono or stereo linked operation.
2. Meters remain independent and active for both channels.
3. Channel A and B BYPASS switches remain active.
4. A1 LOW SHELF and B5 HIGH SHELF modes are available.
(A5 high-shelf and B1 low-shelf filter modes are disabled.)
5. Channel A TONE, CUT FILTERS and LEVEL controls are active.
(Channel B tone, cut-filter and level controls are disabled.)
6. A / B control switches are inactive.
7. e Outputs mute for 200 ms when switched between 10-BAND and 5-BAND modes.
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
A2
2502k1k
125
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
B2
2502k1k
125
1
2
octdB
x0.1
Hz
x1
x10
1
2
octdB
Hz
x0.1
x1
x10
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
A3
2502k1k
BYPASS
125
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
B3
2502k1k
BYPASS
125
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
BYPASS
x1
x10
-6 6
2
-24
BYPASS
x0.1
x1
x10
GAIN BW
0
OL
12
FREQUENCY
500
A4
2502k1k
125
GAIN BW
0
OL
12
FREQUENCY
500
B4
2502k1k
125
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
12
-24
A5
2502k1k
BYPASS
125
GAIN BWHIGH SHELF
0
-6 6
12
-24
B5
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
+
.5 1.5
6 6
1
2
/
12
octdB
0 0
x0.1
Hz
∞ ∞
x1
x10
LOW MIDHIGH LOW HIGH IN OUT
+
1
6 6
.5 1.5
1
2
/
12
0 0
octdB
Hz
x0.1
∞ ∞
x1
x10
The active control surface for 10-BAND mode. Inactive controls are grayed out.
CUT FILTERSTONE LEVEL
+
240
120
10k
60
14k
30
20k
15
+
240
120
10k
60
14k
30
20k
15
CUT FILTERSTONE LEVEL
+
5k
7k
0
121212
5k
7k
0+0
121212
A
BYPASS
10-BANDBYPASS
BEQ
5-BAND
IN
+6-12-6-30+3 +12 OL
A
OUT
PEQ 55
A
PARAMETRIC
POWER
+6-12-6-30+3 +12 OL
EQUALIZER
IN
OUT
B
BEQ
12
0
+
12
+
Manual-3
Page 6
Rear Panel Connections
WIRING
TIP / PIN 2 = POSITIVE
RING / PIN 3 = NEGATIVE
SLEEVE = SIGNAL GROUND
PIN 1 = CHASSIS GROUND
+
-
+
-
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
PEQ 55
MADE IN U.S.A.
RANE CORP.
ACN 001 345 482
U.S. and International Patents Pending
FOR CONTINUED
GROUNDING
PROTECTION
DO NOT REMOVE
100-240V
50/60 Hz 20 WATTS
SCREW
OUTPUT B
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
BYPASS
FILTERS ALL
OUTPUT A INPUT B INPUT A
+
-
+
-
+
-
+
-
+
-
+
-
Channel A and B INPUTS
Plug the outputs of the mixer or other source to these Inputs. Choose only one type of connector — the ¼" TRS, XLR, and
Euroblock do not sum. Note: In agreement with IEC and AES/ANSI standards, wiring convention is pin 2 positive, pin 3 is negative (re-
turn), pin 1 is shield chassis ground. Refer to the Sound Sytem Interconnection RaneNote, supplied with this manual, for correct wiring
to other connectors or unbalanced devices.
Channel A and B OUTPUTS
Connect these to the Inputs of an amplifier or mixer. e Outputs may be used simultaneously to drive different devices at once.
All Outputs are balanced and follow the same “pin 2 hot” convention as the Inputs.
Power connector
e PEQ 55 uses a universal internal switching power supply that accepts 100 to 240 VAC at 50 to 60 Hz, allowing it to work in
most countries. e line cord attaches to a standard IEC appliance inlet. A US line cord is shipped with each unit.
APPLICATIONS
Dual Mono 5-Band Operation
From Mixing Console
GAIN BW
-6 6
2
-24
x0.1
BYPASS
x1
x10
GAIN BW
-6 6
2
-24
BYPASS
x0.1
x1
x10
Mix Right
0
OL
12
FREQUENCY
A2
2502k1k
125
0
OL
12
FREQUENCY
B2
2502k1k
125
GAIN BW
1
12
octdB
Hz
12
octdB
Hz
2
x0.1
x1
x10
1
2
x0.1
x1
x10
0
-6 6
-24
A3
BYPASS
GAIN BW
0
-6 6
-24
B3
BYPASS
.5 1.5
1
/
500
.5 1.5
1
/
500
OL
12
FREQUENCY
2502k1k
125
OL
12
FREQUENCY
2502k1k
125
1
.5 1.5
1
12
/
octdB
500
Hz
1
.5 1.5
1
/
12
octdB
500
Hz
Mix Left
INPUT A INPUT B
GAIN BWLOW SHELF
0
-6 6
-24
A1
BYPASS
GAIN BWLOW SHELF
0
-6 6
-24
B1
BYPASS
OL
12
FREQUENCY
2502k1k
125
OL
12
FREQUENCY
2502k1k
125
1
.5 1.5
1
12
/
octdB
500
Hz
1
.5 1.5
1
/
12
octdB
500
Hz
OUTPUT A OUTPUT B
To crossovers, amplifiers, speakers
-6 6
2
-24
x0.1
x1
x10
-6 6
2
-24
x0.1
x1
x10
GAIN BW
0
OL
12
FREQUENCY
500
A4
2502k1k
BYPASS
125
GAIN BW
0
OL
12
FREQUENCY
500
B4
2502k1k
BYPASS
125
1
.5 1.5
1
12
/
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
12
-24
A5
BYPASS
GAIN BWHIGH SHELF
0
-6 6
12
-24
B5
BYPASS
OL
FREQUENCY
500
2502k1k
125
OL
FREQUENCY
500
2502k1k
125
1
.5 1.5
1
12
/
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
5-BAND mode is selected.
Output A uses the A set of controls.
Output B uses the B set of controls.
CUT FILTERSTONE LEVEL
+
+
2
x0.1
x1
x10
2
x0.1
x1
x10
6 6
0 0
∞ ∞
+
6 6
0 0
∞ ∞
240
120
60
30
15
LOW MIDHIGH LOW HIGH IN OUT
+
240
120
60
30
15
CUT FILTERSTONE LEVEL
5k
7k
10k
14k
20k
5k
7k
10k
14k
20k
BYPASS
+
0
121212
0+0
121212
12
0
+
12
+
A
BEQ
A
BEQ
BYPASS
POWER
A
BEQ
A
BEQ
POWER
10-BANDBYPASS
5-BAND
10-BANDBYPASS
5-BAND
IN
+6-12 -6 -3 0+3 +12 OL
OUT
PEQ 55
PARAMETRIC
EQUALIZER
IN
+6-12 -6 -3 0+3 +12 OL
OUT
+6-12-6-30+3 +12 OL
PEQ 55
PARAMETRIC
+6-12-6-30+3 +12 OL
A
B
IN
A
OUT
EQUALIZER
IN
B
OUT
Manual-4
Page 7
Linked Stereo 5-Band Operation
From Mixing Console
Mix Left
Mix Right
INPUT A INPUT B
GAIN BWLOW SHELF
0
-6 6
12
-24
A1
2502k1k
BYPASS
125
GAIN BWLOW SHELF
0
-6 6
12
-24
B1
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
BYPASS
x1
x10
-6 6
2
-24
BYPASS
x0.1
x1
x10
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
A2
2502k1k
125
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
B2
2502k1k
125
1
2
octdB
x0.1
Hz
x1
x10
1
2
octdB
Hz
x0.1
x1
x10
OUTPUT A OUTPUT B
To crossovers, amplifiers, speakers
Both channels can
use the A set of
controls OR...
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
A3
2502k1k
BYPASS
125
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
B3
2502k1k
BYPASS
125
BYPASS
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
x1
x10
-6 6
2
-24
x0.1
x1
x10
A
GAIN BW
0
OL
12
FREQUENCY
500
A4
2502k1k
BYPASS
125
GAIN BW
0
OL
12
FREQUENCY
500
B4
2502k1k
BYPASS
125
10-BANDBYPASS
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
12
-24
A5
2502k1k
BYPASS
125
GAIN BWHIGH SHELF
0
-6 6
12
-24
B5
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
+
.5 1.5
6 6
1
2
/
12
octdB
0 0
x0.1
Hz
∞ ∞
x1
x10
LOW MIDHIGH LOW HIGH IN OUT
+ +
1
6 6
.5 1.5
1
2
/
12
0 0
octdB
Hz
x0.1
∞ ∞
x1
x10
5-BAND mode
B EQ
5-BAND
IN
+6-12-6-30+3 +12 OL
OUT
is selected.
A
...both channels
can use the B
A
PEQ 55
PARAMETRIC
EQUALIZER
B EQ
IN
+6-12-6-30+3 +12 OL
OUT
POWER
set of controls.
B
CUT FILTERSTONE LEVEL
+
5k
240
7k
120
10k
60
14k
30
20k
15
5k
240
7k
120
10k
60
14k
30
20k
15
CUT FILTERSTONE LEVEL
BYPASS
+
0
121212
0+0
121212
12
0
+
BYPASS
12
+
A
BEQ
A
BEQ
10-BANDBYPASS
5-BAND
POWER
10-BANDBYPASS
A
BEQ
5-BAND
+6-12 -6 -3 0+3 +12 OL
A
BEQ
+6-12 -6 -3 0+3 +12 OL
POWER
+6-12-6-30+3 +12 OL
+6-12-6-30+3 +12 OL
IN
A
OUT
PEQ 55
PARAMETRIC
EQUALIZER
IN
B
OUT
PEQ 55
PARAMETRIC
EQUALIZER
IN
A
OUT
IN
B
OUT
Mono or Linked Stereo 10-Band Operation
From Mixing Console
Connect for linked stereo operation
INPUT A INPUT B
GAIN BWLOW SHELF
0
-6 6
12
-24
A1
2502k1k
BYPASS
GAIN BWLOW SHELF
0
-6 6
12
-24
B1
2502k1k
BYPASS
OL
FREQUENCY
500
125
OL
FREQUENCY
500
125
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
x1
x10
-6 6
2
-24
x0.1
x1
x10
GAIN BW
0
OL
12
FREQUENCY
500
A2
2502k1k
BYPASS
125
GAIN BW
0
OL
12
FREQUENCY
500
B2
2502k1k
BYPASS
125
OUTPUT A OUTPUT B
To crossovers, amplifiers, speakers
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
BYPASS
x1
x10
-6 6
2
-24
BYPASS
x0.1
x1
x10
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
A3
2502k1k
125
GAIN BW
0
.5 1.5
OL
1
12
/
12
FREQUENCY
500
B3
2502k1k
125
1
2
octdB
x0.1
Hz
x1
x10
1
2
octdB
Hz
x0.1
x1
x10
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
A4
2502k1k
BYPASS
125
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
B4
2502k1k
BYPASS
125
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
-24
A5
BYPASS
GAIN BWHIGH SHELF
0
-6 6
-24
B5
BYPASS
OL
12
FREQUENCY
2502k1k
125
OL
12
FREQUENCY
2502k1k
125
1
.5 1.5
1
/
12
octdB
500
Hz
1
.5 1.5
1
/
12
octdB
500
Hz
10-BAND mode is selected.
A / B switches have no effect.
6 6
2
0 0
x0.1
∞ ∞
x1
x10
+
6 6
2
0 0
x0.1
∞ ∞
x1
x10
240
120
60
30
LOW MIDHIGH LOW HIGH IN OUT
15
+
240
120
60
30
15
CUT FILTERSTONE LEVEL
CUT FILTERSTONE LEVEL
+
+
5k
7k
10k
14k
20k
5k
7k
10k
14k
20k
BYPASS
+
0
121212
0+0
121212
12
0
+
12
+
A
BEQ
A
BEQ
BYPASS
POWER
A
BEQ
A
BEQ
POWER
10-BANDBYPASS
5-BAND
10-BANDBYPASS
5-BAND
+6-12 -6 -3 0+3 +12 OL
PEQ 55
PARAMETRIC
EQUALIZER
+6-12 -6 -3 0+3 +12 OL
+6-12-6-30+3 +12 OL
PEQ 55
+6-12-6-30+3 +12 OL
IN
A
OUT
IN
B
OUT
IN
A
OUT
PARAMETRIC
EQUALIZER
IN
B
OUT
Manual-5
Page 8
Mixing Console
Inserting the PEQ 55 on an Instrument Channel or Group Output
GAIN BWLOW SHELF
0
-6 6
12
-24
A1
2502k1k
BYPASS
125
GAIN BWLOW SHELF
0
-6 6
12
-24
B1
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
INPUT A
1
.5 1.5
1
/
12
octdB
Hz
x0.1
x1
x10
1
.5 1.5
1
/
12
octdB
x0.1
Hz
x1
x10
Send
GAIN BW
-6 6
2
-24
BYPASS
GAIN BW
-6 6
2
-24
BYPASS
0
A2
0
B2
OL
12
FREQUENCY
2502k1k
125
OL
12
FREQUENCY
2502k1k
125
500
500
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
x0.1
x1
x10
x0.1
x1
x10
Return
OUTPUT A
GAIN BW
0
-6 6
2
12
-24
A3
2502k1k
BYPASS
GAIN BW
0
-6 6
2
12
-24
B3
2502k1k
BYPASS
OL
FREQUENCY
500
125
OL
FREQUENCY
500
125
Important:
See the Sound Sytem Interconnection
RaneNote (included with this manual)
for information about connecting
balanced and unbalanced equipment.
If your mixer uses TRS Insert jacks (unbalanced), we
recommend using cable wired as shown below.
T = SEND
R = RETURN
S = SHIELD
RED RED SEND
T T
RED RED
R
SHIELD
1-CONDUCTOR SHIELDED CABLE
1-CONDUCTOR SHIELDED CABLE
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
Send
INPUT B
-6 6
-24
BYPASS
-6 6
-24
BYPASS
Return
OUTPUT B
GAIN BW
0
OL
12
FREQUENCY
500
A4
2502k1k
125
GAIN BW
0
OL
12
FREQUENCY
500
B4
2502k1k
125
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
12
-24
A5
2502k1k
BYPASS
125
GAIN BWHIGH SHELF
0
-6 6
12
-24
B5
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
.5 1.5
1
/
12
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
x0.1
x1
x10
x0.1
x1
x10
5-BAND mode is selected.
Output A uses the A set of controls.
Output B uses the B set of controls.
SHIELD
Ring & Sleeve = Both tied to Shield
SHIELD
Ring = No connection
T
R
6 6
2
0 0
∞ ∞
+
6 6
2
0 0
∞ ∞
240
120
60
30
15
LOW MIDHIGH LOW HIGH IN OUT
+
240
120
60
30
15
CUT FILTERSTONE LEVEL
CUT FILTERSTONE LEVEL
+
+
BYPASS
RETURN
5k
7k
10k
14k
20k
5k
7k
10k
14k
20k
+
0
121212
0+0
121212
12
0
+
12
+
A
BEQ
A
BEQ
BYPASS
POWER
A
BEQ
A
BEQ
POWER
10-BANDBYPASS
5-BAND
10-BANDBYPASS
5-BAND
IN
+6-12 -6 -3 0+3 +12 OL
OUT
PEQ 55
PARAMETRIC
EQUALIZER
IN
+6-12 -6 -3 0+3 +12 OL
OUT
+6-12-6-30+3 +12 OL
PEQ 55
PARAMETRIC
+6-12-6-30+3 +12 OL
A
B
IN
A
OUT
EQUALIZER
IN
B
OUT
Using the A / B Controls to Switch Between Two Different EQ Settings
From Mixing Console
Connect
GAIN BW
-6 6
2
-24
x0.1
BYPASS
x1
x10
GAIN BW
-6 6
2
-24
BYPASS
x0.1
x1
x10
0
A2
0
B2
12
2502k1k
12
2502k1k
for Linked Stereo
5-Band Operation
FREQUENCY
125
FREQUENCY
125
OUTPUT B
INPUT A
GAIN BWLOW SHELF
0
-6 6
12
-24
A1
BYPASS
GAIN BWLOW SHELF
0
-6 6
12
-24
B1
BYPASS
OUTPUT A
OL
FREQUENCY
500
2502k1k
125
OL
FREQUENCY
500
2502k1k
125
1
.5 1.5
1
12
/
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
To crossovers, amplifiers, speakers
Use the A set of
controls for one
EQ setting...
INPUT B
10-BANDBYPASS
GAIN BW
1
12
octdB
Hz
12
octdB
Hz
2
x0.1
x1
x10
1
2
x0.1
x1
x10
0
-6 6
OL
12
-24
FREQUENCY
500
A3
2502k1k
BYPASS
125
GAIN BW
0
-6 6
OL
12
-24
FREQUENCY
500
B3
2502k1k
BYPASS
125
.5 1.5
OL
1
/
500
.5 1.5
OL
1
/
500
1
.5 1.5
1
12
/
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
-6 6
2
-24
x0.1
BYPASS
x1
x10
-6 6
2
-24
BYPASS
x0.1
x1
x10
A
GAIN BW
0
OL
12
FREQUENCY
500
A4
2502k1k
125
GAIN BW
0
OL
12
FREQUENCY
500
B4
2502k1k
125
10-BANDBYPASS
1
.5 1.5
1
12
/
octdB
Hz
1
.5 1.5
1
/
12
octdB
Hz
2
x0.1
x1
x10
2
x0.1
x1
x10
GAIN BWHIGH SHELF
0
-6 6
12
-24
A5
2502k1k
BYPASS
125
GAIN BWHIGH SHELF
0
-6 6
12
-24
B5
2502k1k
BYPASS
125
OL
FREQUENCY
500
OL
FREQUENCY
500
1
+
.5 1.5
6 6
1
2
12
/
octdB
0 0
x0.1
Hz
∞ ∞
x1
x10
LOW MIDHIGH LOW HIGH IN OUT
+
1
6 6
.5 1.5
1
2
/
12
0 0
octdB
Hz
x0.1
∞ ∞
x1
x10
CUT FILTERSTONE LEVEL
+
240
120
10k
60
14k
30
20k
15
+
240
120
10k
60
14k
30
20k
15
CUT FILTERSTONE LEVEL
+
5k
7k
0
121212
5k
7k
0+0
121212
A
12
BEQ
5-BAND
POWER
+6-12 -6 -3 0+3 +12 OL
PEQ 55
+6-12 -6 -3 0+3 +12 OL
IN
OUT
PARAMETRIC
EQUALIZER
IN
OUT
A
B
0
+
BYPASS
A
12
BEQ
+
A
10-BANDBYPASS
5-BAND mode
A
is selected.
5-BAND
BEQ
IN
+6-12-6-30+3 +12 OL
A
OUT
B EQ
5-BAND
IN
+6-12-6-30+3 +12 OL
OUT
...then switch to
BYPASS
A
PEQ 55
PARAMETRIC
EQUALIZER
B EQ
the B set of
controls for a
second EQ
setting.
BYPASS
IN
+6-12-6-30+3 +12 OL
B
OUT
POWER
A
BEQ
POWER
PEQ 55
PARAMETRIC
+6-12-6-30+3 +12 OL
EQUALIZER
IN
B
OUT
Manual-6
Page 9
10-BANDBYPASS
A
IN
5-BAND
BEQ
A
OUT
PARAMETRIC
PEQ 55
+6-12 -6 -3 0+3+12 OL
A
EQUALIZER
BEQ
B
OUT
IN
+6-12 -6 -3 0+3+12 OL
POWER
10-BANDBYPASS
A
5-BAND
BEQ
A
OUT
IN
+6-12 -6 -3 0+3+12 OL
PARAMETRIC
PEQ 55
A
EQUALIZER
BEQ
B
OUT
IN
+6-12 -6 -3 0+3+12 OL
POWER
PEQ 55 Settings Templates
12
+
12
CUT FILTERSTONE LEVEL
+
+
6 6
1
.5 1.5
OL
0
GAIN BWHIGH SHELF
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BWLOW SHELF
-6 6
12030240
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
BYPASS
+
0
12
12
0
+
12
12
20k7k14k5k10k
15
60
0 0
∞ ∞
x1
x0.1
Hz
1k
2k
500
125
250
A5
BYPASS
x1
x0.1
Hz
1k
2k
500
125
250
A4
BYPASS
x1
x0.1
Hz
1k
2k
500
125
250
A3
BYPASS
x1
x0.1
Hz
1k
2k
500
125
250
A2
BYPASS
x1
x0.1
Hz
1k
2k
500
125
250
A1
BYPASS
LOWMID HIGH LOWHIGH IN OUT
x10
x10
x10
x10
x10
12030240
+
+
6 6
1
.5 1.5
OL
0
GAIN BWHIGH SHELF
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BWLOW SHELF
-6 6
1
1
1
1
1
0
0
60
0 0
2
octdB
12
/
500
FREQUENCY
12
-24
2
octdB
12
/
500
FREQUENCY
12
-24
2
octdB
12
/
500
FREQUENCY
12
-24
2
octdB
12
/
500
FREQUENCY
12
-24
2
octdB
12
/
500
FREQUENCY
12
-24
+
12
12
0
12
+
0
12
20k7k14k5k10k
CUT FILTERSTONE LEVEL
15
∞ ∞
x1
x10
x0.1
Hz
1k
2k
125
250
B5
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B4
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B3
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B2
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B1
BYPASS
CUT FILTERSTONE LEVEL
+
+
6 6
1
.5 1.5
OL
0
GAIN BWHIGH SHELF
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BWLOW SHELF
-6 6
12030240
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
2
octdB
12
/
1
FREQUENCY
12
-24
60
0 0
500
500
500
500
500
BYPASS
+
12
12
+
12
12
20k7k14k5k10k
15
∞ ∞
x1
x0.1
Hz
1k
2k
125
250
A5
BYPASS
x1
x0.1
Hz
1k
2k
125
250
A4
BYPASS
x1
x0.1
Hz
1k
2k
125
250
A3
BYPASS
x1
x0.1
Hz
1k
2k
125
250
A2
BYPASS
x1
x0.1
Hz
1k
2k
125
250
A1
BYPASS
LOWMID HIGH LOWHIGH IN OUT
x10
x10
x10
x10
x10
12030240
+
+
6 6
1
.5 1.5
OL
0
GAIN BWHIGH SHELF
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BW
-6 6
1
.5 1.5
OL
0
GAIN BWLOW SHELF
-6 6
0
0
60
0 0
2
octdB
12
/
1
500
FREQUENCY
12
-24
2
octdB
12
/
1
500
FREQUENCY
12
-24
2
octdB
12
/
1
500
FREQUENCY
12
-24
2
octdB
12
/
1
500
FREQUENCY
12
-24
2
octdB
12
/
1
500
FREQUENCY
12
-24
+
12
12
20k7k14k5k10k
CUT FILTERSTONE LEVEL
15
∞ ∞
x1
x10
x0.1
Hz
1k
2k
125
250
B5
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B4
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B3
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B2
BYPASS
x1
x10
x0.1
Hz
1k
2k
125
250
B1
BYPASS
Get out your crayons! Use these templates to keep a record of valuable settings. Additional templates may be downloaded at www.rane.com/peq55.html.
Manual-7
Page 10
Additional Resources
Unless you truly have golden ears, most people have a hard time knowing exactly where to set each control. Luckily there are
several computer-based tools available to help.
Goldline
e TEF20 performs Time, Energy and Frequency measurements using the science of Time Delay Spectrometry (TDS)
www.gold-line.com/tef/tef.htm
Sia Software Company
SmaartLive and SIA Acoustic Tools sound system measurement, acoustic analysis and real-time control software.
www.siasoft.com
Terrasonde
e Audio Toolbox combines test procedures and acoustic analysis functions in a handy little package.
www.terrasonde.com
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com
Manual-8
107397
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