
X12 • X14 • X24 OWNER'S MANUAL
Cautions
CAUTION
TO AVOID ELECTRIC SHOCK, DO NOT INSERT
FINGERS OR OBJECTS INTO ANY OPENINGS
IN THE CABINET
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 "dangerous Voltage"
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 presence
of important operating and maintenance (servicing)
instructions in the literature accompanying the
product.
Sicherheitsvorschriften
VORSICHT
UM ELEKTRISCHEN SCHLAG ZU VERMEIDEN,
KEINE FINGER ODER GEGENSTÄNDE IN
ÖFFNUNNGEN DES GEHÄUSES STECKENN
WARNUNG: ZUR VERMEIDUNG VON FEUER ODER
ELEKRISCHEN SCHLÄGEN DAS GERÄT NICHT MIT REGEN
ODER FEUCHTIGKEIT IN BERÜHRUNG BRINGEN
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.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE COVER. NO USERSER VICEABLE P AR TS INSIDE. REFER SER VICING T O
QUALIFIED SERVICE PERSONNEL
CAUTION
RISK OF ELECTRIC SHOCK:
OPEN ONLY IF QUALIFIED AS
SERVICE PERSONNEL
T o reiterate the above w arnings: servicing instructions are
for use by qualified personnel only. To avoid electric shock,
do not perform any servicing other than that contained in the
Operation Instructions unless you are qualified to do so. Refer all servicing to qualified 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.
VORSICHT
GEFAHR EINES ELEKTRISCHEN SCHLAGES: NUR
VON QUALIFIZIEREM WARTUNGSPERSONAL ZU
ÖFFNEN
Eindrigliche Warnung: W artungsvo rschriften 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.
2

X12 • X14 • X24 OWNER'S MANUAL
Table of Contents
Warning Messages 2
Table of Contents 3
Introduction 4
Overview 5
System Wiring Diagrams
X12 6
X14 7
X24 8
Plug-In Modules 9
Front Panel Features
X12 & X24 10
Status Indicators 10
X14 11
Status Indicators 11
Rear Panel Features
X12 & X24 12
Sense Lines 12
X14 13
Sense Lines 13
Set-Up
Mounting 14
Cabling 14
Amplifier Selection 14
Sense Connectors 14
Trouble Shooting 15
T echnical Specifications 16
3

X12 • X14 • X24 OWNER'S MANUAL
Congratulations on your purchase of a Renkus-Heinz loudspeaker controller. It has been designed to
provide years of trouble-free, high performance operation. We hope you enjoy it.
The X12, X14 and X24 are a series of loudspeaker controllers designed to be used specifically with
speakers produced by Renkus-Heinz. These loudspeaker controllers provide electronic crossovers,
equalization, delay, and loudspeaker protection circuitry tailored specifically to a particular model
loudspeaker. By using one of these controllers, you are assured of obtaining the optimum in loudspeaker
performance and protection.
Caution: The X12, X14 and the X24 are configured for a particular Renkus-Heinz loudspeaker
model. Do not use with any other loudspeaker model other than the internally programmed intended
loudspeaker model. Use of the wrong loudspeaker model may result in loudspeaker damage.
Introduction
Your Renkus-Heinz contr oller was completely tested and inspected before leaving our factory and should
have arrived in perfect condition. Please carefully inspect your controller 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 controller arrived in good
condition. If shipping the controller should ever be required, it should be shipped only in its original
factory packing.
Important:
Your Renkus-Heinz controller 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.
4

X12 • X14 • X24 OWNER'S MANUAL
+
Signal
Input
–
+
Low Freq
Sense
–
+
High Freq
Sense
–
The X12, X1 and the X24 are designed to be all encompassing units. They include crossovers, equalization,
time alignment delay, and protective circuitry for specific loudspeakers in a single compact unit. This
simplifies system design, reduces racks space requirements and lowers overall system costs.
A block diagram of the X12 controller is shown below in Figure 1. The X14 and X24 controllers are the
same, except for the number of channels and/or the number of outputs.
Diff. Amp
Diff. Amp
Diff. Amp
Low Freq
High Pass
Filter
High Freq
High Pass
Filter
Crossover Module
(Part 1)
Excursion Limiter
Controller
Peak Limiter
Controller
Thermal Limiter
Controller
Peak Limiter
Controller
Thermal Limiter
Controller
Low
Frequency
EQ
High
Frequency
EQ
EQ/Delay Module
Delay
Circuit
Low Freq
Low Pass
Filter
High Freq
Low Pass
Filter
Crossover Module
(Part 2)
Excursion
Limiter
Peak
Limiter
Peak
Limiter
Thermal
Limiter/
Sense Fail
Thermal
Limiter/
Sense Fail
NOTES
1. Notice that the Low and High
channels are identical, except for
the High channel not having
either a delay circuit or excursion
control.
2. The single channel, 4-way
X14 is identical to the X12,
except for the X14 having two
low frequency channels and 2
high frequency channels with a
common input.
3. The two channel, 2-way
X24 is two X12's in a common
chassis. i.e., a X12 is one half
of a X24.
Diff. Out
Diff. Out
Overview
+
Low
Out
–
+
High
Out
–
Limit Module
Figure 1: X12 Block Diagram
Each controller is specifically “programmed” for a particular Renkus-Heinz loudspeaker. The model
number(s) for the loudspeaker(s) your controller is programmed for are shown on the rear panel.
This “programming” is accomplished using plug-in Crossover, EQ/Delay and Limit modules. This allows
the controller to be re-programmed for different loudspeakers by changing modules.
All three controller models use the same circuitry and same plug-in modules. The only difference between
the three models is the number of input and output channels.
Model X12 (1 channel 2-way)
The X12 is a single channel 2-way (1 in 2 out) controller designed for use with active 2-way loudspeakers (or
3-way loudspeakers set up for bi-amp operation) in single channel (mono) systems. It is also often used as a
"sub controller" and as a controller for passive 2-way loudspeakers. Typical system wiring diagrams for the
X12 can be found on the next page.
Model X14 (1 channel 3-way plus sub)
The X14 is a single channel 4-way (1 in 4 out) controller designed for use with active 3-way loudspeakers
(plus the possible addition of a subwoofer) in single channel (mono) systems. It is also used with active 2way loudspeakers in single channel systems having subwoofers. Refer to page 7 for system wiring details.
Model X24 (2 channel 2-way)
The X24 is a dual channel 2-way (2 in 4 out) controller designed for use with two-way loudspeakers in dual
channel (stereo) systems. It is also used in stereo systems having 3-way loudspeakers that are set up for biamp operation. Typical system wiring diagrams are shown on page 8.
5