Renkus-Heinz P2400 User manual

OPERATION MANUAL
P2400 • P2700
Dual Channel Power Amplifiers
C12 • C22 • L20
Plug-In Controller Modules

2
P2400/P2700 OPERATION MANUAL
Cautions
WARNING: TO PREVENT FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO
RAIN OR MOISTURE
Explanation of Graphical Symbols
The lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to alert
the use to the presence of uninsulated "danger-
ousVoltage" within the product's enclosure that
may be of sufficient magnitude to constitute a
risk of electric shock to humans.
The exclamanation point,within an equilateral
triangle is intended to alert the users to the pres-
ence of important operating and maintenance
(servicing) instructions in the literature accom-
panying the product.
Erklärung der graphischen Symbole
Der Blitz mit nach untenzielendem Pfeil in einem
gleichseitigen Dreieck weist den Benutzer auf
das Vorhandensein einer unisolierten,
"gefährlichen Spannung" im Gehäuse hin, die
stark genug sein kann, einer Person einen
gefährlichen elektrischen Schlag zu versetzen.
Das Ausrufezeichen in einem gleichseitigen
Dreieck weist den Benutzer auf wichtige
Betriebs- und Wartungsvorschriften in den
beiliegenden Unterlagen des Gerätes hin.
WARNUNG: ZUR VERMEIDUNG VON FEUER
ODER ELEKRISCHEN SCHLÄGEN DAS GERÄT
NICHT MIT REGEN ODER FEUCHTIGKEIT IN
BERÜHRUNG BRINGEN
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE COVER. NO USER-
SERVICEABLE PARTS INSIDE. REFER SERVICING
TO QUALIFIED SERVICE PERSONNEL
VORSICHT
GEFAHR EINES ELEKTRISCHEN
SCHLAGES NICHT ÖFFNEN
VORSICHT!UM DAS RISIKO EINES
ELEKTRISCHEN SCHLAGES ZU VERMINDERN,
ABDECKUNG NICHT ENTFERNEN. KEINE
BENUTZER BEDIENUNGSTEILE IM INNERN.
BEDIENUNG NUR DURCH QUALIFIZIERTES
BEDIENUNGSPERSONAL.
CAUTION
RISK OF ELECTRIC SHOCK:
OPEN ONLY IF QUALIFIEDAS
SERVICE PERSONNEL
VORSICHT
GEFAHR EINES ELEKTRISCHEN
SCHLAGES: NUR VON QUALIFIZIEREM
WARTUNGSPERSONAL ZU ÖFFNEN
To reiterate the above warnings:servicing instructions
are for use by qualified personnel only. To avoid electric
shock,do not perform any servicing other than that con-
tained in the Operation Instructions unless you are quali-
fied to do so. Refer all servicing to qualified personnel.
Eindrigliche Warnung: Wartungsvorschriften dienen
nur der Benutzung durch qualifizieres Personal. Zur
Vermeidung eines elektrischen Schlages keine anderen als
die in den Betriebsvorschriften beschriebenen
Wartungsarbeiten ausführen, es sei denn Sie sind dafür
qualifiziert. Wartungsarbeiten sind nur von qualifiziertem
Wartungspersonal auszuführen.
CAUTION
TOAVOID ELECTRIC SHOCK, DO NOT
INSERT FINGERS OR OBJECTS INTO
ANY OPENINGS IN THE CABINET
VORSICHT
UM ELEKTRISCHEN SCHLAG ZU
VERMEIDEN, KEINE FINGER ODER
GEGENSTÄNDE IN ÖFFNUNNGEN DES
GEHÄUSES STECKENN
Sicherheitsvorschriften

3
P2400/P2700 OPERATION MANUAL
Table of Contents
Warning Messages 2
Table of Contents 3
Introduction 4
Technical Specifications 5
Front Panel Features
Status LED's 6-7
Signal LED's 6-7
OutputAttenuators 6-7
On/Off Switch 7
Rear Panel Features
AC Fuse 8
Output Connections 8
Standard Input Module
Output Mode Selector 8
Input Connections 9
Looping Outputs 9
Ground Lift Switch 9
Loudspeaker Controller Modules
C12 Loudspeaker Controller Module 10
Input Connections 10
Output Connections 10
C22 Loudspeaker Controller Module 10
Output Connections 10-11
Input Connections 11
Ground Lift Switch 11
C22 Setup Switches 12
L20 Limiter Module
Looping Outputs 12
HPF Selectors 12
Input Connectors 12
Limit Set Switches 12
Output Mode Selector 13
Ground Lift Switch 13
Amplifier Set-Up and Operation 14
Cooling 14
Mounting 14
Wire Size 14
Performance Verification 14
System Block Diagrams
Without Controller Modules 15
With L20 Limiter Module 15
With C12 Controller Module 16
With C22 Controller Module 16

4
P2400/P2700 OPERATION MANUAL
Congratulations on your purchase of a Renkus-Heinz P2400 or P2700 dual-channel,
professional, power amplifier.
Your Renkus-Heinz amplifier has been designed to provide years of trouble-free, high
performance operation. We hope you enjoy it.
Your amplifier may include a C12 or C22 loudspeaker controller module or a L20
Limiter Module in place of the standard dual channel input module (see pages 8 to 13
for details). The C12 and C22 controller modules are dedicated companions to a
specific Renkus-Heinz loudspeaker. They provide protection circuitry, electronic
crossover circuitry and response optimization for their associated loudspeakers.
The L20 is a limiter module with user adjustable limit and HPF controls. It is not
"loudspeaker specific" and allows the user to adjust the controls to suit his applica-
tion.
Caution:If your amplifier includes a C12 or C22,it is configured for use with a
particular loudspeaker model and should not be used with any other model. Use
of the wrong loudspeaker may result in loudspeaker damage.
Your Renkus-Heinz amplifier was completely tested and inspected before leaving our
factory and should have arrived in perfect condition. Please carefully inspect your
amplifier and its shipping carton for any noticeable damage, and if any damage is
found, immediately notify the shipping company.
Only the consignee may institute a claim with the carrier for any damage incurred
during shipping. Be sure to save the carton and all packing materials for the carrier's
inspection.
It is also a good idea to save the carton and packing material even though the ampli-
fier arrived in good condition. If shipping the amplifer should ever be required, it
should be shipped only in its original factory packing.
Important:
Your Renkus-Heinz amplifier contains no user-serviceable parts and all service
should be referred to qualified service personnel. We recommend that it be returned
to the factory in its original packing carton if factory service is required.
Introduction

5
P2400/P2700 OPERATION MANUAL
Technical Specifications
POWER OUTPUT RATINGS:
(20HZ to 20 kHz < 0.1% THD)
FREQUENCY RESPONSE:
THD (at 1kHz) DISTORTION:
SMPTE IMD:
HUM & NOISE:
CROSSTALK:
INPUT SENSITIVITY:
INPUT IMPEDANCE:
VOLTAGE GAIN:
SLEW RATE:
DAMPING FACTOR:
MAX. VOLTAGE SWING:
POWER REQUIREMENTS:
FEATURES:
COOLING:
CONSTRUCTION:
FINISH:
FRONT CONTROLS:
REAR CONTROLS:
REAR PANEL CONNECTORS:
DIMENSIONS (H X W X D):
NET / SHIPPING WEIGHT:
ASSOCIATED EQUIPMENT:
P2400 P2700
250 watts/ch at 8 ohms 350
350 watts/ch at 4 ohms 500
700 watts bridged (8 ohm) 1000
+0.0, -.5 dB, 20 Hz to 20 kHz
< 0.1% at rated power output (4 ohms)
< 0.015 %
-100 dB (referred to RPO @ 8 ohms,
20 Hz to 20 kHz
> 60 dB @ 400 Hz
1.4 V for RPO @ 8 ohms (P2400)
1.2 V for RPO @ 8 ohms (P2700)
20 K ohms, balanced
31 (P2400)
45 (P2700)
> 30 V/usec (P2400)
> 40 V/usec (P2700)
>200 @ 8 ohms (P2400)
>400 @ 8 ohms (P2700)
+/- 73 Vp(P2400)
+/- 100 Vp(P2700)
120/230 VAC, 50/60 Hz
(P2400 - 1400 VA; P2700 - 1500 VA)
Temperature, DC @ output, short circuit protection
Delayed turn-on with output muting
Subsonic and ultrasonic filters
Signal & Status LEDs
Front to rear, variable speed DC fan
All steel closed box construction;
3/16" aluminum face panel
Black (powder coat)
Output level attenuators, power on/off,
Stereo/mono/bridging mode selector
Ground lift switch
Inputs; 3-pin female XLR ( pin 2 +)
Outputs; 4-pin Neutrik Speakon
Looping (controller) output(s); 3-pin male XLR (pin 2 +)
3 1/2" H x 19" W x 18" D ( depth behind panel) (8.9 x 48.2
x 45.7 cm)
(P2400) 32.1 lbs (14.6 kg)
(P2700) 35 Lbs (15.9 kg)
C12 & C22 plug-in loudspeaker controller modules
L20 plug-in limiter module

6
P2400/P2700 OPERATION MANUAL
Front Panel Features
Signal LED's
Status LED's 1.Channel 1 Status (Prot/Pwr) LED
The Channel 1 Status LED glows green to indicate the amplifier is on and Channel 1 is
operating normally. It glows red to indicate that one or more of the amplifier Channel 1
protective circuits has been activated. The amplifier contains separate over-temperature,DC
on output and shorted-load protective circuitry for each channel. Whenever a fault is
detected,the offending channel is temporarily "shut down" and the status light turned red to
call attention to the problem. The channel will remain "off" until normal operating condi-
tions are restored.
Note. The status LED is also controlled by the C12 & C22 controller and L20 limiter
modules and when one of these modules is included, the status LED will glow red when one
of these modules' protective circuits has been activated.
It is normal for the Status LED to glow red when the amplifier is first turned on. It will then
turn to a steady green as a sign that Channel 1 is on and operating satisfactorily.
2. Channel 1 Signal (Clip/Sig) LED
The Signal LED indicates the status of the amplifier's Channel 1 signal level.When it is off
(not glowing), it shows that no signal is being received. It glows green to indicate a normal
signal level and red as an indication that Channel 1 is being driven into clipping. Occasional
operation of the red "clip" indication (flickering of the red light) is an indication of optimum
system utilization. Extended illumination of the red "clip" indication is a sign the system is
being overdriven and shoud be avoided.
3.Channel 1 OutputAttenuator
The Channel 1 Output Attenuator controls the gain of Channel 1 in all operating modes.
When it is turned fully clockwise, the amplifier will have its maximum rated voltage gain
and will deliver it rated output when driven by its rated input signal. As a general rule,
setting the attenuator in the full clockwise position provides maximum amplifier headroom;
setting the attenuators at a lower level maximizes the system signal/noise ratio.
Important - - When the amplifier is being operated in the bridge output mode, both the
Channel 1 and Channel 2 attenuators must be set in the same position to avoid a mismatch
in the signal level being sent to each channel.
Output
Attenuator
010
CHANNEL 1
STEREO POWER AMPLIFIER
SIG
PWR
PROT CLIP
G
R
231

7
P2400/P2700 OPERATION MANUAL
Front Panel Features
On/Off Switch
4.Channel 2 Status (Prot/Pwr) LED
The Channel 2 Status LED glows green to indicate the amplifier is on and Channel 2 is operating
normally. It glows red to indicate that one or more of the amplifier's Channel 2 protective circuits
has been activated. The amplifier contains separate over-temperature,DC on output and shorted-
load protective circuitry for each channel. Whenever a fault is detected in Channel 2, the channel
is temporarily "shut down" and the status light turned red to call attention to the problem. The
channel will remain "off" until normal operating conditions are restored.
Note. The status LED is also controlled by the C12 & C22 controller and L20 limiter modules and
when one of these modules is included, the status LED will glow red when one of these modules'
protective circuits has been activated.
It is normal for the Status LED to glow red when the amplifier is first turned on. It will then turn
to a steady green as a sign that Channel 2 is on and operating satisfactorily.
5. Channel 2 Signal (Clip/Sig) LED
The Channel 2 Signal LED indicates the status of the amplifier's Channel 2 signal level.When it
is off (not glowing), it shows that no signal is being received by Channel 2. It glows green to
indicate a normal signal level and red as an indication that Channel 2 is being driven into clip-
ping. Occasional operation of the red "clip" indication (flickering of the red light) is an indication
of optimum system utilization. Extended illumination of the red "clip" indication is a sign the
system is being overdriven and shoud be avoided.
6.Channel 2 OutputAttenuator
The Channel 2 Output Attenuator controls the gain of Channel 2 in all operating modes. When it
is turned fully clockwise, the amplifier will have its maximum rated voltage gain and will deliver
its rated output when driven by its rated input signal. As a general rule, setting the attenuator in
the full clockwise position provides maximum amplifier headroom; setting the attenuators at a
lower level maximizes the system signal/noise ratio.
7.Power On/Off Switch
This switch is used to turn power to the amplifier "on" and "off".
Signal LED's
Status LED's
Output
Attenuator
POWER
MODEL
P2400
7
SIG
PWR
PROT CLIP
G
R
010
CHANNEL 2
4 5 6

8
P2400/P2700 OPERATION MANUAL
1.AC Power Cord & Fuse
The fuse holder on the P-2400 accepts a T 10 A, 250 V Fuse; on the P2700 a T 16 A, 250 V.
Before connecting the amplifier, check the AC voltage requirement and make certain the unit is
connected to the proper voltage. Failure of the unit will result if a 120 volt amplifier is connected
to a 220 volt power line.
2. Channel 2 Output Connector
4-Pin Neutrik Speakon connector provides single-connector, quick-disconnect facilities for
Channel 2 on pins 1+ & 1-. Pin 1+ is considered the "hot" terminal while pin 1- is "common".
3. Bridge Output Connector
4-Pin Neutrik Speakon connector provides single-connector, quick-disconnect facilities for the
amplifier's Bridge output on pins 1+ & 1-. Both Pins 1+ and 1- are considered "hot" and
should not be grounded.
4. Channel 1 (and 2) Output Connector
4-Pin Neutrik Speakon connector provides single-connector, quick-disconnect facilities for both
Channel 1 and Channel 2 outputs. The Channel 1 output is on pins 1+ & 1- and the Channel 2
output on pins 2+ & 2-. Pins 1+ & 2+ are considered "hot" while pins 1- & 2- are "common".
Note: If your amplifier has a C12 or C22 controller module or L20 limiter module, instead of the
standard input module shown in the above drawing, please turn to pages 10 and 11.
5.Stereo - Parallel - Bridge Output Mode Selector
The Output Mode Selector allows the amplifer to be operated in 3 different output modes.
In the Stereo mode,the two channels operate independently,just as they do in a stereo amplifier:
signals fed into the two amplifier inputs are amplified separately and delivered in phase to
outputs 1 & 2. The output levels are controlled separately by the front panel mounted attenua-
tors.
In the Parallel mode, input 2 is disabled and the two amplifier channels operate in parallel from
a single input signal fed into the Channel 1 input. This eliminates the need to install a jumper
cable to operate the amplifier channels in parallel. The outputs are separate and in phase and
both input attenuators are active to permit different level settings for each channel.
In the Bridge mode, a single signal is fed into the Channel 1 input which drives both output
channels in tandem. The output is delivered to the Bridge Output connector.This mode allows
Rear Panel Features
AC Fuse
Output
Connections
GROUND LIFT
ON OFF ON
STEREO
PARALLEL BRIDGE IN OUTOUT link IN
21
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
1 2 34
67 8 9
5 10
Output
Mode Selector
Standard Input Module

9
P2400/P2700 OPERATION MANUAL
the two amplifier outputs to be strapped together ( "bridged") to produce a single output with
double the power capabilites of a single channel. Input #2 is disabled. Both input attenuators are
active and must be set to the same level.Note that in bridge mode both sides of the output should
be considered hot and should not be grounded.
6.Channel 2Audio Input Connector
Female 3-pin XLR type input connector for Channel 2.The input is electronically balanced.We
recommend the use of pin 2 as "hot" and pin 3 as "neutral". Pin 1 is chassis ground. When the
amplifier is connected to a balanced source, the shield may either be lifted or connected at the
source end. The choice should be made on the basis of minimum hum.
With an unbalanced source, connect the signal to pin 2 and source ground to pin 3 (connecting
the signal to pin 3 is not recommended as this will cause a 180 phase inversion at the amplifier
outputs. Note: Improper operation results when only pin 2 or only pin 3 and pin 1 (ground) are
used for an unbalanced input.
7. Channel 2 "Looping Output" Connector
Male 3-pin XLR type "looping output" connector for Channel 2 used to "loop through" to
additional amplifiers.
8. Channel 1 "Looping Output" Connector
Male 3-pin XLR type "looping output" connector for Channel 1 used to "loop through" to
additional amplifiers.
9.Channel 1Audio Input Connector.
Female 3-pin XLR type input connector for Channel 1. Refer to 6 above for details.
10.Ground Lift Switch.
The Ground Lift switch is used to separate the signal ground circuit from the amplifier ground
circuit and thus, eliminate hum induced by ground loops.
In the left "ON" position, the signal ground is electrically disconnected from the amplifier ground
circuit (the chassis).
In the center "OFF" position, the input signal ground is electrically connected to the amplifier
ground circuit (the chassis).
In the right "ON" position, an AC connection is provided between the signal ground and the
amplifier ground circuit (the chassis).
Rear Panel Features
"Looping"
Outputs
Ground Lift
Switch
Input
Connections
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400

10
P2400/P2700 OPERATION MANUAL
C22 Controller Module
The C12 loudspeaker controller module is a single input, dual output controller designed for use
with active 2-way loudspeakers (or 3-way loudspeakers set up for bi-amp operation) in single
channel (mono) systems. In this application, it provides crossover, protection and response
shaping.It is also often used as a controller to provide protection and response shaping for either
subwoofers or passive 2-way loudspeakers.
1.Audio Input Connector
Female 3-pin XLR type input connector.The input is electronically balanced.We recommend the
use of pin 2 as "hot" and pin 3 as "neutral". Pin 1 is chassis ground. When the amplifier is
connected to a balanced source, the shield may either be lifted or connected at the source end.
The choice should be made on the basis of minimum hum.
With an unbalanced source, connect the signal to pin 2 and source ground to pin 3 (connecting
the signal to pin 3 is not rcommended as this will cause a 180 phase invervion at the amplifier
outputs). Note: Improper operation results when only pin 2 or only pin 3 and pin 1 (ground) are
used for an unbalanced input.
2. SUB/LF "Output" Connector
Male 3-pin XLR type controller output connector for the SUB/LF channel; used to drive addi-
tional amplifiers.
3. FR/HF "Output" Connector
Male 3-pin XLR type controller output connector for the FR/HF channel; used to drive additional
amplifiers.
Note: When the processed controller outputs are used to drive additional amplifiers, it is
imperative that the source amplifier's level controls are set at the same or a higher level. Other-
wise, the protection feature is lost for the other amplifiers.
The C22 loudspeaker controller module is a dual input, dual output controller designed for use in
stereo systems having either passive loudspeakers or subwoofers. In these systems, it provides
protection for the loudspeakers or subs, as well as high & low pass filters and response shaping.
1.Channel 2 "Processed Output" Connector
Male 3-pin XLR type controller "processed output" connector for Channel 2; provides a "loop-
ing" controller processed output for use in driving additional amplifiers.
3. Channel 2 "FR/HPF Output" Connector
Male 3-pin XLR type controller output connector for the FR/HPF channel;used to drive addi-
tional amplifiers. An internal selector switch determines whether this connector provides a full-
C12 Controller Module
Input
Connections
Output
Connections
cc
PIN 1 = GND
PIN 2 = +
PIN 3 = -
MODEL
C12 SUB/LF OUT FR/HFINPUT
RENKUS-HEINZ
MADE IN USA
13
2
Loudspeaker Controller Modules
Output
Connections

11
P2400/P2700 OPERATION MANUAL
range "looping" output or a processed band-limited "high pass filter" output. Refer to Selector
Switches on page 12 for further information.
3.Channel 2Audio Input Connector
Female 3-pin XLR type input connector.The input is electronically balanced.We recommend the
use of pin 2 as "hot" and pin 3 as "neutral". Pin 1 is chassis ground. When the amplifier is
connected to a balanced source, the shield may either be lifted or connected at the source end.
The choice should be made on the basis of minimum hum.
With an unbalanced source, connect the signal to pin 2 and source ground to pin 3 (connecting
the signal to pin 3 is not rcommended as this will cause a 180 phase inversion at the amplifier
outputs). Note: Improper operation results when only pin 2 or only pin 3 and pin 1 (ground) are
used for an unbalanced input.
4.Ground Lift Switch.
The Ground Lift switch is used to separate the signal ground circuit from the amplifier ground
circuit and thus, eliminate hum induced by ground loops.
In the right position, the input signal ground is electrically connected to the amplifier ground
circuit (the chassis).
In the left position, only an AC connection is provided between the signal ground and the
amplifier ground circuit (the chassis).
5.Channel 1Audio Input Connector.
Female 3-pin XLR type input connector for Channel 1. Refer to 3 above for details.
6. Channel 1 "FR/HPF Output" Connector
Male 3-pin XLR type controller output connector for the FR/HPF channel;used to drive addi-
tional amplifiers. An internal selector switch determines whether this connector provides a full-
range "looping" output or a processed band-limited "high pass filter" output. Refer to Selector
Switches on page 12 for further information.
7.Channel 1 "Processed Output" Connector
Male 3-pin XLR type controller "processed output" connector for Channel 2; provides a "loop-
ing" controller processed output for use in driving additional amplifiers.
Note: When the processed controller outputs are used to drive additional amplifiers, it is
imperative that the source amplifier's level controls are set at the same or a higher level. Other-
wise, the protection feature is lost for the other amplifiers.
Input
Connections
Input
Connections
Ground Lift
Switch
Loudspeaker Controller Modules
Output
Connections
GROUND
LOOPING / HPF
PIN 1 = GND
PIN 2 = +
PIN 3 = -
CH 2 OUTPUTS
MODEL
C22
PROCESSED LOOPING / HPF
CH 1 INPUT
CH 2 INPUT
RENKUS-HEINZ
MADE IN USA
CH 1 OUTPUTS
1 32 5 6 74
PROCESSED

12
P2400/P2700 OPERATION MANUAL
The C22 Loudspeaker Controller Module has several selector switches and a Stereo/Bridging
Jumper plug that are accessible by removing the module from the amplifier. The location of
these controls is shown in the above outline drawing.
The Looping/HPF switches control the signals to the Looping/HPF output connectors. In the
Filtered position, the associated output connector is connected to the output of that channel's high
pass filter. In the other position,the connector parallels that channel's input connector and
servers as a "looping" output. The HPF setting is used to deliver a band-limited signal to an
additional amplifier for "non-overlap" operation (refer to the system wiring diagram on page
16 for further information).
The Stereo/Bridging Jumper plug is used to "bridge" the two output channels together to provide
a single output with twice the power capabilities of a single channel. Note that the Jumper Plug is
located under the right PK22-xxx kit, which must be removed (unplugged) to gain access to the
Jumper Plug.
The switches identified as sw 1, sw 2 and sw 3 are used to configure the C22 for specific
loudspeakers. Additional information on these switches can be found in the C22 Operation
Manual.
The L20 is a dual-channel limiter module. It is not loudspeaker specific and is provided with
user adjustable limit and HPF (high pass filter) controls (refer to drawing on next page). It is used
to provide limiting on both amplifier channels (loudspeaker protection) plus low frequency
rolloff.
1 & 6."Looping"Audio Output Connectors
These male 3-pin XLR type connectors are wired in parallel with the input connectors and
provide unprocessed "looping" Channels 1 and 2 outputs. They allow "looping" through to
additional amplifiers.
2 & 5. HPF Selector Switches
Three position switches allow the Channel 1 and 2 low frequency rolloff points to be set at either
30 Hz, 60 Hz or 100 Hz to protect small loudspeakers from over excursion damage.
C22 Setup
Switches
HPF Selectors
Looping
Outputs
L20 Limiter Module
Filtered
Filtered
Stereo Bridged
Stereo/Bridged
Jumper Plug
Looping/HPF Selector
Switches
sw 3 sw 3
sw 2 sw 2
sw 1
sw 1
PK22-xxx Kit PK22-xxx Kit
C22 Controller Module Physical Layout
Loudspeaker Controller Modules

13
P2400/P2700 OPERATION MANUAL
3 & 4. Audio Input Connectors
Female 3-pin XLR type input connectors for Channels 1 and 2. Refer to section 6 on page 9 for
wiring details.
7 & 10. Limit Set Switches
Three position switches allow the Channel 1 and 2 maximum output levels to be set at either 100,
200 or 350 watts into 8 ohms (400, 800 or 1400 watts in bridge mode).
8. Stereo - Parallel - Bridge Output Mode Selector
The Output Mode Selector allows the amplifer to be operated in 3 different output modes.
In the Stereo mode, the two channels operate independently, just as they do in a stereo amplifier:
signals fed into the two amplifier inputs are amplified separately and delivered in phase to outputs
1 & 2. The output levels are controlled separately by the front panel mounted attenuators.
In the Parallel mode, input 2 is disabled and the two amplifier channels operate in parallel from a
single input signal fed into the Channel 1 input. This eliminates the need to install a jumper cable
to operate the amplifier channels in parallel. The outputs are separate and in phase and both input
attenuators are active to permit different level settings for each channel.
In the Bridge mode, a single signal fed into the Channel 1 input, drives both output channels in
tandem and the output is delivered to the Bridge Output connector.This mode allows the two
amplifier outputs to be strapped together ( "bridged") to produce a single output with double the
power capabilites of a single channel. Input #2 is disabled. Both input attenuators are active and
must be set to the same level. Note that in bridge mode both sides of the output should be consid-
ered hot and should not be grounded and that the Limit and HPF switches should be set in the
same position.
9.Ground Lift Switch.
The Ground Lift switch is used to separate the signal ground circuit from the amplifier ground
circuit and thus, eliminate hum induced by ground loops.
In the left position, the signal ground is electrically connected to the amplifier ground circuit (the
chassis).
In the center position, the input signal ground is electrically disconnected from the amplifier
ground circuit (the chassis).
In the right position, an AC only connection is provided between the signal ground and the
amplifier ground circuit (the chassis).
Input
Connectors
Limit Set
Switches
Output Mode
Selector
Ground Lift
Switch
Loudspeaker Controller Modules
132 5 64
PIN 1 = GND
PIN 2 = +
PIN 3 = -
MODEL
L20 INPUTOUTPUT
GROUND
STEREO LIMIT
100 200 350
BRIDGE
HP FILTER
PARALLEL
798 10
X
CH 2 OUTPUTINPUT CH 1
(400) (800) (1400)
BRIDGE
100Hz
60Hz
30Hz
(400) (800) (1400)
BRIDGE
HP FILTER
100Hz
60Hz
30Hz
LIMIT
100 200 350
RENKUS-HEINZ
MADE IN USA

14
P2400/P2700 OPERATION MANUAL
The P2400 and P2700 amplifiers are designed to be mounted in standard 19" racks. They have 4
front panel mounting screws. Because of their depth and weight it is imperative that the amplifier
be supported at the rear in any portable application.
Both amplifiers are fan cooled and it is important that an ample supply of air is provided at the
front of the amplifier and a free air exhaust space is provided at the rear of the amplifier. The
internal fan provides adequate cooling when the rack has an open back and the front is not
obstructed. Closed back racks may need to be pressurized and provided with an exhaust fan to
ensure adequate air movement.
Multiple amplifiers may be stacked directly on top of each other. Their is no need to separate
them with a blank (spacer) panel. Keep in mind that almost all amplifiers radiate a 50/60 Hz
magnetic hum field from their power transformers. It is prudent to provide at least one rack-
space between any signal processing equipment and the nearest amplifier to reduce the possibility
of induced hum.
The size of the speaker wiring needed depends on the length of the cable. We generally recom-
mend the use of 12 AWG for c!ables up to 30 meters (approximately 100 feet) in length. The
following table shows the signal loss in 30 meters of cable driving a 4 ohm load:
Wire Gauge (AWG) 10 12 14 16 18
Signal Loss (dB) .44 .69 1.07 1.65 2.49
Using higher wattage amplifiers than actually needed is acceptable when controller modules are
used as the controller will keep peak power levels within the acceptable limits for the associated
loudspeaker(s).
Before applying power to the system, trace and verify all connections.
Caution: Operating the System at full level can damage your hearing. Wear ear protectors and
do not position yourself in front of the loudspeakers.
Make certain all the Mode selector switches are set in the desired mode and that outputs are
properly connected. Loudspeaker damage may occur if, for example, the Sub outputs are
connected to the high frequency drivers and not to the Subs!
Set the power amplifier gain controls to their minimum position.
Turn on the power amplifiers and slowly turn the amplifier level controls to their maximum
position one at a time. While you are doing this, verify that as the amplifier gain is increased the
appropriate response is obtained (i.e.the sub channel is connected to the subwoofers). Moderate
level audio should be heard from the loudspeakers.
Gradually increase the signal level while observing the Signal LED's. As the level increases they
should begin to flicker red. As the level continues to increase they will be on for longer periods
of time. Do not operate the system at a level where the protection LED’s are illuminated
continuously.
If as you are increasing the level, you hear a sudden loss of one channel and see illumination of a
red Status LED, this indicates one of the amplifiers protective circuits has been activated. Turn
the amplifier off, reduce the gain and then turn the amplifier on again.
Verification of Proper Operation
Wire Size
Mounting
Cooling
Amplifier Setup and Operation

15
P2400/P2700 OPERATION MANUAL
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
Ch. 1 Input
Channel 1
Channel 2 Channel 1 and 2 outputs to loudspeakers.
Looping inputs to additional power amplifiers,
if additional power amplifiers are needed.
GROUND LIFT
ON OFF ON
STEREO
PARALLEL BRIDGE IN OUTOUT link IN
21
Ch. 2 Input
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
Bridged Output Bridged output to loudspeakers.
Looping input to additional power amplifiers,
if additional power amplifiers are needed.
Input
GROUND LIFT
ON OFF ON
STEREO
PARALLEL BRIDGE IN OUTOUT link IN
21
Typical P2400/2700 system wiring diagram.
(bridged operation)
Typical P2400/2700 system wiring diagram.
(dual channel systems)
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
Ch. 1 Input
Channel 1
Channel 2 Channel 1 and 2 outputs to loudspeakers.
Looping inputs to additional power amplifiers,
if additional power amplifiers are needed.
Ch. 2 Input
Typical P2400/2700 with L20 installed system wiring diagram.
(dual channel systems)
PIN 1 = GND
PIN 2 = +
PIN 3 = -
MODEL
L20 CH 1 INPUT
CH 2 INPUT CH 1
OUTPUT
CH 2
OUTPUT
GROUND
STEREO
LIMIT SET
BRIDGE
LIMIT SET
HPF SELECT HPF SELECT
PARALLEL
X

16
P2400/P2700 OPERATION MANUAL
RH 366 33/97
17191 Armstrong Ave. Tel [phone]
Irvine, CA, 92614 Fax [phone]
cc
GROUND
LOOPING / HPF
PIN 1 = GND
PIN 2 = +
PIN 3 = -
CH 2 OUTPUTS
MODEL
C22
PROCESSED LOOPING / HPF
CH 1 INPUT
CH 2 INPUT
RENKUS-HEINZ
MADE IN USA
CH 1 OUTPUTS
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
“Ch. 1” In
Unprocessed “Looping” or HPF (high pass filter)
controller outputs to additional power amplifiers
when more amplifiers are needed.
“Ch. 2” In
“Processed” controller outputs to additional power
amplifiers when more amplifiers are needed.
Channel 1
Channel 2
Channel 1 output to loudspeaker(s)
PROCESSED
Channel 2 output to loudspeaker(s)
Typical P2400/2700 with 22 installed system wiring diagram.
(dual channel systems)
To subwoofer(s), such as the Renkus-Heinz
BPS12-1 or BPS15-1.
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
Input
Full Range output
SUB output
To full-range loudspeaker(s),such as the Renkus-Heinz
SR82 or TRC121
Looping “processed” controller outputs to additional power
amplifiers, if additional power amplifiers are needed.
cc
PIN 1 = GND
PIN 2 = +
PIN 3 = -
MODEL
C12
SUB/LF OUT FR/HFINPUT
RENKUS-HEINZ
MADE IN USA
Typical P2400/2700 system wiring diagram with 12 installed.
(full range plus sub systems)
T O REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
TO REDUCE THE RISK OF ELECTRICAL SHOCK
DO NOR REMOVE COVER (OR BACK)
NO USER SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
MANUFACTURED IN EEC
BRIDGE
21
OUTPUTS
STEREO 4 OHM MIN./CH.
BRIDGED MONO 8 OHM MIN.
T 10 A
250 V
117 V ~
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
IRVINE, CA - U.S.A.
POWER CONSUMPTION : 920 W
SERIAL N
MODEL P-2400
Input
Highs
Lows
Looping “processed” controller outputs to additional power
amplifiers, if additional power amplifiers are needed.
cc
PIN 1 = GND
PIN 2 = +
PIN 3 = -
MODEL
C12
SUB/LF OUT FR/HFINPUT
RENKUS-HEINZ
MADE IN USA
“Lows” and “Highs” to active 2-way loudspeakers,
such as the Renkus-Heinz SR5A & TRC121A
or
to 3-way loudspeakers set up for bi-amping,
such as the SR6, SR7,CE153 and TRAP40.
Typical P2400/2700 system wiring diagram with 12 installed.
(2-way active loudspeaker systems)