Page 1
KLING & FREITAG System Controller C2
User's Manual
Released: 23.03.2006
Version 4.0
Important Information,
Please Read Before Use!
KLING & FREITAG GmbH
Junkersstrasse 14
D-30179 Hannover
PHONE 0 (049) 511- 969 97-0
FAX 0 (049) 511- 67 37 94
www.kling-freitag.de
Page 2
User's Manual System Controller C2
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 2 of 33
Page 3
User’s Manual System Controller C2
Thank you for your decision to buy a KLING & FREITAG product. To guarantee a trouble-free operating of the equipment and to enable the KLING & FREITAG C2 Controller to achieve its full potential, please read the operating instructions carefully before
use.
With the purchase of the C2 Controller, you have acquired a device with the highest
possible quality and performance capabilities.
As the owner of this system, you now have a versatile and highly professional tool
which, when operated properly, is a true pleasure to use.
Symbols in User's Manual
This symbol indicates the possibility of life-threatening danger and a
health risk for persons. Not following these instructions may result in
serious health problems including potentially fatal injuries.
Warning
Caution
This symbol indicates a possibly dangerous situation. Not following
these instructions may cause minor injuries or cause property damage.
This symbol gives instructions for the proper use of the described
products. Not following these instructions may cause damage to the
equipment or other property.
Important
Symbols in User's Manual
User's Manual System Controller C2 Version 4.0, 23.03.2006
© by André Figula, Kling & Freitag GmbH, 2003 - 2006; all rights reserved.
All specifications in this manual are based on information available at the time of pub-
lishing for the features and safety guidelines of the described products.
Technical specifications, measurements, weights and properties are not guaranteed.
The manufacturer reserves the right to make product alterations within legal provi-
sions as well as changes to improve product quality.
All persons who use the speaker system must have this guide and all further information for safe operations available to them during assembly, disassembly,
and use.
We appreciate any input with suggestions and improvements for this manual. Please
send this to us at the following address:
info@kling-freitag.de
KLING & FREITAG GMBH Junkersstr.14 D-30179 Hannover
Phone +49 (0) 511 - 96 99 70, Fax +49 (0) 511 - 67 37 94
or to:
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 3 of 33
Page 4
User's Manual System Controller C2
Contents
Chapter Page
1. General Safety Instructions 5
2. Product Description 7
3. Connectors, Functions, Controls and Displays 9
3.1 Front 9
3.1.1 Diagram of switchable Filter Functions 11
3.2 Rear 11
4. C2 Remote Control 13
4.1 Example for Remote Control and Display 14
5. System Plug-In Cards 14
5.1 Notes for the System Plug-in Cards Line 212-6 and Line 212-9 14
5.2 Changing the System Plug-In Cards 15
6. Single Cable System 17
7. Operation with the Subwoofers K&F ACCESS B5 / B10 18
8. Recommendations for Configuration 18
8.1 Operating several Speakers per C2 Channel 18
8.2 The correct Balance between Bass and Top Speakers 19
8.2.1 SW 112 / SW 115D / SW 115E / SW 118E 19
8.2.2 SW 215E / SW 215D / ACCESS B5 / ACCESS B10 21
8.3 Combination of Bass System ACCESS B10 with C10 Controller 23
9. Wiring 24
9.1 Connecting the Speakon connectors to the terminal 24
9.2 Avoiding Ground Loops 25
9.2.1 What is a Ground Loop? 25
9.2.2 Avoiding Ground Loops 25
10. Configurations and Wiring Diagrams 26
10.1 Full Range Mode (without additional Subwoofer) 26
10.2 Full Range Systems & Subwoofers in 2-Way Active Mode 27
10.3 Combination with Subwoofer ACCESS B10 via Controller C10 28
10.4 Alternative Wiring without Frontal Connectors 29
11. Operating the Controller 30
12. Technical Specifications 31
13. Block Diagram 32
14. Regulations for Disposal 33
14.1 Germany: 33
14.2 EU, Norway, Island, and Liechtenstein (not Germany): 33
14.3 Other countries 33
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 4 of 33
Page 5
User’s Manual System Controller C2
1. General Safety Instructions
CAUTION
Risk of electric shock!
Do not open the units!
Warning: To avoid electric shock hazard, do not expose
this appliance to rain or moisture. The enclosures may
only be opened by qualified personnel!
Do not install devices in any of the following places:
− where the units are permanently exposed to direct sunlight.
Warning
− near any heat sources and open fire. Do not put candles etc. on top of the unit.
− where the airflow for cooling is blocked.
− where it is exposed to high moisture.
− where it is exposed to strong vibrations and dust.
Power Supply
Before connecting the AC power cable of the controller, please check if the available
voltage is compatible with the operating voltage as indicated on the unit. If this is not
the case, then the unit needs to be adapted by the manufacturer or an authorized
service centre. If the unit is not compatible with the available voltage, it should never
be connected! This could irreparably ruin the controller.
Make sure that the power outlet supplies a ground connector, which must be connected to the unit via the PE conductor of the power cord!
All equipment, which is connected together using signal cables and has a connection
to protective earth, must be connected to a common PE conductor. If not, there is a
risk of an electric shock or the destruction of the connected equipment.
The power plug must always be used to disconnect from the power supply. Furthermore, the power plug must be easily accessible for use at all times.
Protection of electrical cables
Power cords should be laid in such a way that they are protected against footstep
damages, tensile strain and against being trapped.
Transportation
When transporting the equipment, make sure that it is protected from vibrations.
Cleaning
The equipment should only be cleaned with a damp cloth when it is not plugged in.
Pauses in use
The power cord should be disconnected from the power source during longer pauses
in use.
Intrusion of objects or liquids
No objects or liquids should intrude or leak into the equipment.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 5 of 33
Page 6
User's Manual System Controller C2
Maintenance and technical service
The user should not perform any maintenance work on the equipment other than
that which is described in this manual. Repairs should be executed by a qualified service technician only.
In the following cases, the unit should be serviced by an authorized technician only if:
− the power cord or the mains connectors have been damaged.
− objects or liquids have gotten into it.
− it was exposed to rain.
− it doesn't appear to be functioning properly.
− it has fallen down or the enclosure is damaged.
Warning
Unwanted interference
RF interference on the power cord or on the line signal cables may lead to unwanted
sound interference.
Important
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 6 of 33
Page 7
User’s Manual System Controller C2
2. Product Description
The C2 Controller optimises the performance and operating safety of K&F speaker
systems.
It can be equipped with a specific system plug-in card for the top speaker and a separate system plug-in card for the subwoofer.
The C2 Controller can be operated with all K&F loudspeakers for which a system plugin card is obtainable:
The following system plug-in cards are available for the C2 Controller:
Top speakers:
Subwoofer:
− CA 106
− CA 1201
− CA 1215-6
− CA 1215-9
− CA 1515-6
− CA 1515-9
− Line 212-6
− Line 212-9
All system plug-in cards for tops and subwoofers can be combined. The C2 Controller
thus facilitates an optimum combination between all these K&F bass systems and all
K&F full-range systems listed above.
Range of functions:
The C2 offers a 2-way stereo-crossover for separating the signal that is to be transmitted into frequencies for mid-high systems (= top speaker or full-range system) and
frequencies for connected subwoofer systems (= sub or bass). It aligns the delay times
and phase of the various full-range systems with those of the subwoofer systems.
The inclusion of carefully balanced filters (EQs) on the respective system plug-in cards
enables the C2 Controller to optimise the feedback stability and frequency response
of the loudspeakers.
Why optimise the frequency response of passive high-end loudspeakers?
a) The passive Kling & Freitag full-range systems are characterized not only by their
excellent sound but also by their high degree of efficiency. Compact speaker systems with a high efficiency level have a natural low frequency attenuation. This is
desirable for the following reasons:
− SW(i) 112
− SW 115D-XO / SWi 115D
− SW(i) 115E / SW 215E
− SW(i) 118E
− SW 215D
− ACCESS B5
− ACCESS B10
− In many situations, such as speech or acoustic applications, powerful bass is
of less importance than efficiency.
− In applications requiring a better reproduction of low frequencies the inclu-
sion of a bass system is normally inevitable. As the C2 Controller boosts the
bass frequencies of the top speakers in full-range mode, it is possible in many
cases to do without additional bass systems.
b) In full-range mode without C2 Controller mid-high systems also receive the low
frequencies of a signal source, which they are not capable of transmitting. The
systems are thus subjected to an unnecessary load. The C2 Controller filters out
these frequencies by means of subsonic filters, thus reducing the risk of mechanical overload even at high performance levels.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 7 of 33
Page 8
User's Manual System Controller C2
In addition the C2 Controller offers the following functions:
− optional bass boosting in full-range mode (top speakers without additional sub-
woofers)
− top low cut switch, e.g. for…
… optimising the frequency response of arrayed speakers (cluster)
… optimising the frequency response in monitor mode
… impact noise reduction
− high-boost to compensate for high frequency attenuation when the top speakers
are aligned to cover large distances.
− Sub-mono, combining a stereo bass signal into one mono signal. Attenuation of the
individual stereo channels by 6dB so that the bass speakers are not subjected to an
increased load by the combined signal sum.
− Optimisation of the operating safety of speakers and power amplifiers through
special peak and RMS limiters with sense technology:
With other (universal) controllers, the gain of the selected power amplifiers must
be known. The limiter on the C2 Controller, on the other hand, uses a special
control circuit to determine the actual output voltage of the power amplifiers. The
limiter then reduces the input level only when the power amplifier actually provides more power than the speakers can handle. The amplifier's gain and the position of the input level control for the power amplifiers are insignificant for the
limiter function of the C2 Controller.
C2- Power amplifier with
Controller input level control
Limiter
Measured value
(Output voltage of
the power amplifier)
Universal Power amplifier with
controller input level control
Limiter
Fixed value, depending on the gain and the position of
input level controls of the power amplifier.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 8 of 33
Page 9
User’s Manual System Controller C2
3. Connectors, Functions, Controls and Displays
3.1 Front
TOPHF
10 12
8
FULLRANGE
MODE
14
SUB
MONO
L
L
A
A
T
T
I
N
I
N
G
M
G
I
M
I
I
I
L
S
S
L
P
P
B
B
U
U
O
O
T
S
T
S
1
1
1
1
H
H
H
H
H
C
C
C
C
C
SYSTEM
C2
CONTROLLER
L
L
A
A
T
T
I
N
N
I
G
M
G
I
M
I
I
I
L
S
S
L
P
P
B
B
R
U
U
O
O
E
S
T
S
T
2
2
2
2
W
H
H
H
O
C
C
C
P
1
CH1 TOP OUTCH1 SUB OUT CH2 TOP OUTCH2 SUB OUT
BOOST LOW CUT
SUB
GAIN
CHANNEL 2 LINKCHANNEL 2 INCHANNEL 1 IN CHANNEL 1 LINK
INPUT GAIN
45 7 9
23
6
11 13
15
1. CH 1 SUB OUT, and CH 2 SUB OUT
Speakon connectors, pin assignment: (1+ / 1-)
Channel 1 = CH 1, channel 2 = CH 2
These outputs direct the amplified signals from the power amplifiers to the subwoofers.
2. CH 1 TOP OUT and CH2 TOP OUT
Speakon connectors, pin assignment: (1+ / 1-)
Channel 1 = CH 1, channel 2 = CH 2
These outputs direct the amplified signals from the power amplifiers to the midhigh systems.
3. CHANNEL 1 IN / CHANNEL 1 LINK and CHANNEL 2 IN / CHANNEL 2 LINK, XLR
connectors, pin assignment: 1 ground / 2 + / 3 -
Channel 1 = CHANNEL 1, channel 2 = CHANNEL 2
IN (XLR female): electronically balanced line inputs for channels 1 and 2.
These connectors are used to connect line signals,
e.g. from a mixer output.
LINK (XLR male): outputs for linking a line level signal, which is connected
to the corresponding 'IN’ connector, e.g. in order to direct
the signal to further controllers or power amplifiers.
The 'IN' and 'LINK' connectors are wired together in parallel.
Further parallel-wired input connectors are situated at the rear of the controller
and are labelled CH 1 INPUT and CH 2 INPUT.
4. INPUT GAIN, level control
The INPUT GAIN control is used to set the input level of the C2 Controller. The input level can be increased by 6 dB and reduced by 40 dB. In order to avoid overloading the input section of the amplifier or the mixer output circuit, this control
should normally be set at 0 dB.
Turning down the input level controls may not always prevent distortions in the input section of the power amplifier, especially if this section has a relatively low
headroom. To prevent signal interruptions or damages to the speakers, turn the le-
vel controls of the power amplifier to the maximum position, if possible and adjust
the signal level on the mixing console or the controller.
5. SUB GAIN, level control (also see as of chapter 8, page 18)
During operation with additional bass systems it is very important that the relative
volume levels of the top speakers and the bass systems are correctly balanced. The
SUB GAIN control is used to adjust these volume levels. Always use the controller to
set the relative volume levels of the tops and bass systems, with the power amplifier
turned up as high as possible. Detailed advice on how the level adjustment
should be set to suit various loudspeaker combinations can be found as of
should be set to suit various loudspeaker combinations can be found as of
should be set to suit various loudspeaker combinations can be found as of should be set to suit various loudspeaker combinations can be found as of
chapter
chapter 8888, page
chapter chapter
, page 18
, page , page
18....
1818
Detailed advice on how the level adjustment
Detailed advice on how the level adjustment Detailed advice on how the level adjustment
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 9 of 33
Page 10
User's Manual System Controller C2
6. HF BOOST, switch (see also diagram in section 3.1.1)
Long-distance function for the top speakers. High frequencies are attenuated
heavily by the air when travelling over long distances. In order to compensate for
such high frequency attenuation in long-distance applications this push-button
switch should be pressed. If it is not, then a linear frequency response for nearfield conditions will result.
7. TOP LOW CUT, switch (see also diagram in section 3.1.1)
Attenuation of low frequencies in the mid-high system in order to …
− ... compensate increased acoustic pressure in the low-mid range due to the
speaker's positioning. When using arrayed loudspeakers (cluster), improved
performance is achieved when the Top Low Cut push-button switch is pressed. In this mode the increase in acoustic pressure in the low-mid area due to
the cluster array is counteracted, producing a practically linear frequency re-
sponse.
− … align frequency response in monitor mode.
− … reduce pop-noises in speech applications.
8. FULL RANGE MODE, switch (see also diagram in section 3.1.1)
Countersunk switch for selecting the modes:
a) 'FULL RANGE MODE' (switch pressed)
The entire frequency spectrum, with the exception of the inaudible infra-bass,
is handled by the tops, with the frequency response optimised and the bass
frequencies boosted.
b) '2-WAY ACTIVE MODE' (switch not pressed)
Mode for operation with additional subwoofers. Operation via 2-way stereo
crossover for separating the signal into frequencies for the mid-high systems
and frequencies for the connected subwoofer systems. By activating additional filters the group delay and phase response of the low and mid-high systems are aligned. This facilitates an optimum acoustic coupling of all K&F bass
systems to all K&F full-range systems.
9. FULL RANGE MODE, display
LED illuminated in ’FULLRANGE’ mode, switch (8.) pressed.
If this LED does not come on, then the ’2-WAY ACTIVE MODE’ is selected.
10. SUB MONO, switch
Countersunk switch for selecting the modes: ’SUB MONO’ / ’SUB STEREO’. In
’SUB MONO’ mode the bass signal is reduced to a mono signal. The amplified
mono signal for the loudspeakers can be extracted from both SUB OUT output
sockets (1. &. 3.). The signal from the individual stereo channels is reduced by 6
dB so that the bass speakers are not subjected to an increased load by the combined signal sum.
11. SUB MONO, display
This LED is illuminated in ’SUB MONO’ mode (switch pressed).
If this LED does not come on, then the ’SUB STEREO-MODE’ is selected.
12. SIGNAL LEDs, display
These LEDs are illuminated when power amplifiers are connected and their output signals are received by the C2 Controller.
In exceptional cases, the Sense LEDs may still light up even when the power amplifiers are turned off or disconnected. This situation can be attributed to the ‘‘microphone effect’’ of the speakers. If the speaker's cones
are moved (i.e. from air movement of other sound sources), the speakers
produce voltage which may cause the LEDs to light up.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 10 of 33
Page 11
User’s Manual System Controller C2
13. LIMIT LEDs, display
These LEDs are illuminated as soon as the output level of the relevant channel
comes under the influence of the limiters on the controller. A gently engaging
RMS limiter and a fast peak limiter limit the output of the power amplifiers virtually inaudibly to the maximum permitted level. If the red limiter LEDs light up frequently the volume should be reduced accordingly. If necessary, further loudspeakers should be added.
14. POWER, display
This LED illuminates as soon as the unit is connected to the mains supply.
15. LABELLING AREA
An interchangeable label provides information regarding the configuration of the
filter cards in use.
3.1.1 Diagram of switchable Filter Functions
Full Range
2-Way
Top Low Cut @ Full Range
Top Low Cut @ 2-Way
High Boost
10
0
-10
-20
-30
100 1000 10000
Diagram of the filter settings FULL RANGE, TOP LOW CUT, HF BOOST. Differences
between the various models arise due to individual filter cards.
3.2 Rear
18
240V / 50Hz
CE
FUSE: 100mA / SLOW BLOW
SER No.
REMOTE CONTROL
MADE IN GERMANY
CH2 SUB AMP
GND
LIFT
CH1 TOP AMPCH1 SUB AMPCH2 TOP AMP CH1 INPUT
CH2 INPUT
AMP RETURN CH2 AMP RETURN CH1
-LF+
-HF+C2-LF+-LF+ -HF+ -LF+
SYSTEM
CONTROLLER
16 17
19 20 21 22
16. AC Mains Socket, IEC power socket 230V 50-60Hz / 115V 50-60Hz.
Connect this socket using the mains cable supplied to a mains outlet. Pay attention to the stated mains voltage. Connection to an incorrect mains voltage can
result in irreparable damage!
Important
17. REMOTE CONTROL, mini D-Sub socket (for details see chapter 4, as of page 13)
Connection for remote call-up of: 'Signal Present', 'Limit', 'Power On' and remote
control of all output levels. A detailed description can be found in chapter 4.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 11 of 33
Page 12
User's Manual System Controller C2
18. CH 1 SUB AMP and CH 2 SUB AMP
XLR connector, pin assignment: 1 ground / 2 + / 3 -
Channel 1 = CH1, channel 2 = CH2
Electronically balanced line signal outputs. These outputs deliver the line signal
processed by the controller to the subwoofers. Connect these sockets to the inputs of the power amplifiers for the subwoofers.
19. CH 1 TOP AMP and CH 2 TOP AMP
XLR connector, pin assignment: 1 ground / 2 + / 3 Channel 1 = CH1, channel 2 = CH2
Electronically balanced line signal outputs. These outputs deliver the line signal
processed by the controller to the mid-high systems. Connect these sockets to
the inputs of the power amplifiers for the mid-high systems.
20. GND LIFT, switch
For avoiding ground loops. Separates the signal ground from the power supply
earth. The Ground Lift switch serves to avoid ground loops. When the Ground
Lift switch is set at LIFT, Pin 1 of the INPUT connector is not connected to the
signal source. A connection always exists between the input connector (XLR female) and the link connector (XLR male).
21. CH 1 INPUT and CH 2 INPUT
XLR female connectors, pin assignment: 1 ground / 2 + / 3 - .
Channel 1 = CH1, channel 2 = CH2
Additional electronically balanced line signal inputs. These input connectors are
wired in parallel to the connectors CHANNEL 1 IN / CHANNEL 1 LINK and
CHANNEL 2 IN / CHANNEL 2 LINK on the front of the unit.
22. AMP RETURN CH 1 and CH 2 (input impedance 220 kOhm)
Connector for Phoenix plugs MSTB 2,5/6-ST5, 08 / Ord.No: 17 57 05 1 VO
These connectors are for connecting the amplified output signals from the power
amplifiers (loudspeaker signal).
The amplified signal from the bass power amps must be distributed to four
pins (2 x LF+ und 2 x LF-), as the permitted current load capacity might otherwise be exceeded! The two inputs have no
significance for stereo opera-
tion!
The amplified output signals connected here are directed to the relevant Speakon
loudspeaker connectors at the front of the unit. LF to SUB OUT / HF to TOP OUT.
These signals are required by the limiters (sense signal).
Please ensure that all is connected correctly. These inputs are electronically balanced.
When using ’SP’ speakers nothing may be connected to these connectors as
these speakers have built-in limiters.
There are some makes of power amplifiers which have a DC voltage to
earth potential from the positive and negative pins of the speaker outputs.
In such cases the connection must be made via capacitors. More details can
be found in the manuals of the power amps in question. The input impedance of the C2 Controller is 220 kOhm.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 12 of 33
Page 13
User’s Manual System Controller C2
4. C2 Remote Control
The Sub-D connector at the rear of the C2 Controller offers the facility of remote
control of the functions listed below and / or the calling-up of status information.
The Sub-D connector is not intended for connection to a computer. The contacts
provide only analogue control and status signals.
25-pin Sub-D pin assignment:
Pin Label Input Output For
GND
1
Top Signal Channel 1
2
Top Limit Channel 1
3
GND
4
Top Signal Channel 2
5
Top Limit Channel 2
6
Minus 8,75V
7
GND
8
GND
9
GND
10
GND
11
GND
12
GND
13
GND
14
Sub Signal Channel 1
15
Sub Limit Channel 1
16
GND
17
Sub Signal Channel 2
18
Sub Limit Channel 2
19
Plus 8,75V
20
Sub Level Channel 1
21
Top Level Channel 1
22
Sub Level Channel 2
23
Top Level Channel 2
24
Master Level
25
Voltage at LED outputs (via 1k2 resistor)
− inactive (no signal and no limiting) = +12V
− active (signal and limiting) = -12V
X
X
X
X
X
X
X
X
X
X
X
X
X
for display, e.g. LED
for display, e.g. LED
for display, e.g. LED
for display, e.g. LED
level boost (control voltage source)
for display, e.g. LED
for display, e.g. LED
for display, e.g. LED
for display, e.g. LED
level attenuation (control voltage source)
potentiometer (control voltage)
potentiometer (control voltage)
potentiometer (control voltage)
potentiometer (control voltage)
potentiometer (control voltage)
Inputs for potentiometers / control voltage
− Positive voltage (+8.75 V from pin 20) reduces the relevant output signal by 9dB
per volt. With a 10k potentiometer between GND and pin 20 and the slider contact on the control input of a level channel (sub, top or master) a control range of
0 - 80dB can be achieved.
− Negative voltage (pin 7) boosts the signal by 9dB per volt. The boosting of the
signal should be approached with the utmost care. An excessive signal can destroy
power amplifier and speakers.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 13 of 33
Page 14
User's Manual System Controller C2
4.1 Example for Remote Control and Display
1. Bi-coloured LED between pin 2 (top signal channel 1) and GND
− Colour 1 indicates that the C2 Controller is ready for operation
− Colour 2 indicates that the ’top signal’ is present at channel 1
2. LED between pin 15 (sub signal channel 1) and GND
− LED indicates that the ’sub signal’ is present at channel 1
3. Potentiometer (10k) at pin 20 (control voltage source for signal attenuation),
pin 25 (master volume) and GND
− The master volume can be adjusted within a control range of 0 - 80 dB.
5. System Plug-In Cards
5.1 Notes for the System Plug-in Cards Line 212-6 and Line 212-9
During the development of the Line Series particular care was taken so that the parallel
operation of Line 212-6 and Line 212-9 can be guaranteed.
Thus it is also possible to operate the Line 212-9 using a Line 212-6 card.
Should you however wish to cover only shorter distances and operate the Line 212-9
alone, we would recommend for best results the use of a Line 212-9 card.
If you are using the Line 212-9 alone with a '-6' card we recommend that you reduce
the frequency around 16 kHz Q2 by 2 dB.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 14 of 33
Page 15
User’s Manual System Controller C2
5.2 Changing the System Plug-In Cards
Tool: Cross-tip screwdriver, size PH 1
− Remove the mains plug!
− Remove the cover from the top of the housing using a Phillips screwdriver to re-
Warning
move the 7 cover screws (three screws at the back and two on each side).
− Remove the screws securing the cards. The card for the bass system is the small one
and is secured with two screws. The large card for the tops is secured with 4
screws.
bass filter card
top filter card
− Extract the installed card from the controller by carefully pulling it vertically up-
wards. Keep it in a safe place where it is not exposed to moisture or mechanical
damage.
− We advise that the bass card be inserted first. Ensure that the pins fit exactly into
the connector. Insert the card initially only so far, so as to make sure that the pins fit
correctly into the openings of the connector. Then press the PCB firmly home, taking care not to bend the pins.
− Now insert the card for the top speakers. Here too extreme care should be taken:
Start with the right-hand side. This is the side on which the end of the PCB is flush
with the black connector. First fit this side carefully onto the pins. Do not yet press
the PCB firmly into place.
connector
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 15 of 33
top card
Page 16
User's Manual System Controller C2
− Now fit the connector on the left-hand side onto the pins.
Then press the filter card board firmly onto the pins.
Screw the filter cards on tightly again!
Finally screw the cover of the housing back on. In order to protect the thread of the
securing screws from damage, please proceed as follows:
Set the screws in position and applying only light pressure turn them anti-clockwise
until you hear a click and the screw jumps forward a little. You have found the beginning of the thread. Now tighten the screws as normal in a clockwise direction.
1.) 2.)
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 16 of 33
Page 17
User’s Manual System Controller C2
6. Single Cable System
If you wish to operate the C2 Controller with a 'single cable system' (connecting pins
1+/1- for tops and 2+/2- for the bass systems), a modification inside the housing is necessary.
The single cable system does not function with the models ACCESS B5 / B10. The reason for this is that these bass systems have two chassis, each with its own connecting
pins for the input connectors. This means one chassis with 1+/1-, the other with 2+/2-.
Thus all available pins are already in use. For more information on this subject see the
next chapter.
To convert to a single cable system please proceed as follows:
− Disconnect the mains plug!
Warning
− Remove the cover from the top of the housing using a Phillips screwdriver (size PH
1) to remove the 7 cover screws (three screws at the back and two on each side).
− Attach the jumper wires (available from Kling & Freitag) to the connections behind
the Speakon connectors. See illustration below.
− Finally screw the cover of the housing back on. In order to protect the thread of the
securing screws from damage, proceed as described in chapter 5.2 .
KLING &
FREITAG
SOUND SYSTEMS
1
-
-
1
-
2
1+
2+
-
2
1+
-
-
1
2
2+
1+
CH2 SUB OUT
-
-
1
2
2+
1+
2+
CH2 TOP OUTCH1 TOP OUTCH1 SUB OUT
CHANNEL 1 IN
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 17 of 33
Page 18
User's Manual System Controller C2
7. Operation with the Subwoofers K&F ACCESS B5 / B10
The subwoofer systems ACCESS B5 and B10 each have two loudspeaker chassis, each
of which has its own connection pins to the input connectors. Therefore the jumper
wires must be installed in the C2 Controller before use. The following measures should
be taken inside the open housing of the C2:
− Disconnect the mains plug!
− Remove the cover from the top of the housing using a Phillips screwdriver to re-
move the 7 cover screws (three screws at the back and two on each side).
− Attach the jumper wires shipped with the B5 / B10 filter card to the connectors
behind the Speakon connectors. See illustration below.
− Finally screw the cover of the housing back on. In order to protect the thread of the
securing screws from damage, proceed as described in chapter 5.2 .
1
-
-
1
-
2
1+
2+
-
2
1+
-
-
1
2
2+
1+
-
-
1
2
2+
1+
2+
Warning
KLING
&
FREITAG
SOUND SYSTEMS
CH2 SUB OUT
CH2 TOP OUTCH1 TOP OUTCH1 SUB OUT
CHANNEL 1 IN
8. Recommendations for Configuration
8.1 Operating several Speakers per C2 Channel
The maximum number of speakers which can be operated at one time using the C2
Controller is limited by the minimum output impedance of the power amplifiers.
We recommend not more than 2 x 8 Ω loudspeakers per C2 Controller channel.
When operating in stereo this means: a maximum of 4 x 8 Ω top speakers and a
maximum of 4 x 8 Ω bass speakers.
Should you wish to include more speakers on one channel, please observe the minimum
output impedance of the power amplifier and make sure the power amplifier has sufficient headroom.
No further adjustments need to be made to the C2 Controller when operating with
several speakers connected to a single controller. There is no need to adjust the limiters.
They receive the necessary information via the voltage applied (not via the current).
Important
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 18 of 33
Page 19
User’s Manual System Controller C2
8.2 The correct Balance between Bass and Top Speakers
When setting up the system it is very important to ensure that the volume levels of the
tops and bass systems are correctly balanced.
The sound level of arrayed bass speakers increases by max. +6dB when doubling the
number of speakers (+3dB efficiency plus 3dB by doubling the power amplifier level).
The loudness of the tops increases in a different manner because of the directivity.
A bass speaker which is on the floor can be a few decibels louder than a flown bass
system because of the floor reflections.
The SUB GAIN control on the C2 Controller facilitates the correct setting of this balance
according to configuration and application.
The following tables are intended to show the basic principles of setting this
balance in various configurations.
The data given apply to bass systems placed on the floor and are valid on the condition
that all systems are driven by identical power amps with the signals set at the same level
(we recommend maximum level).
When using power amps with vastly different gain characteristics it can become necessary to adjust the balance between top and bass system using the volume controls of
the power amplifier. We recommend however that this be done only when the level
adjustment on the C2 Controller proves insufficient. When using this method it cannot
be ruled out that the input circuit of the power amp is subjected to overload.
Depending upon room acoustics the correct setting may well differ in practice from that
given here. For this reason the sound engineer should always carry out a fine adjustment using the SUB GAIN control.
8.2.1 SW 112 / SW 115D / SW 115E / SW 118E
Prerequisite:
− identical power amps for tops and bass systems with each power amp set at the
same volume.
− bass systems placed on the floor
1 x subwoofer with 2 top speakers 1 x subwoofer with 4 top speakers
TOP
TOP
2 x CA 106
2 x CA 1201 4 x CA 1201
2 x CA 1215 4 x CA 1215
2 x CA 1515 4 x CA 1515
SUB
1
with low bass
2 x Line 212
Only recom-
mended for
applications
level required
1 x SW 112 1 x SW 112
1 x SW 115D /
SW 115E
1 x SW 118E
SUB
MONO
+6 dB
0dB
-1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
TOP
TOP
TOP
TOP
SUB
1 x SW 115D /
SW 115E
1 x SW 118E
SUB
MONO
4 x CA 106
+6 dB
0dB
-1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
1
4 x Line 212
Only recommended for
applications
with low bass
level required
Sub Mono switch
pressed / LED on
Top Low Cut switch
not pressed
Sub Mono switch
pressed / LED on
Top Low Cut
switch pressed
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 19 of 33
Page 20
User's Manual System Controller C2
2 x subwoofers (stereo) with 2 top speakers 2 subwoofers (stereo) with 4 top speakers
2 x CA 1201 4 x CA 1201
TOP
SUB
2 x SW 112 2 x SW 112
2 x SW 115D /
SW 115E
2 x SW 118E
Sub Mono switch not
pressed / LED off
SUB
MONO
TOP
SUB
2 x CA 106
-1
-2 2
-3 3
-5 5
-6 6
2 x CA 1215 4 x CA 1215
2 x CA 1515 4 x CA 1515
2 x Line 212
+6 dB
-1
-2 2
-3 3
-5 5
-6 6
GAIN
0 dB
0dB
SUB
GAIN
1
Top Low Cut switch
not pressed
0dB
SUB
1
TOP
TOP
SUB
2 x SW 115D /
SW 115E
2 x SW 118E
SUB
MONO
Sub Mono switch not
pressed / LED off
TOP
TOP
SUB
4 x CA 106
+6 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
4 x Line 212
Only recom-
mended for
applications
with low bass
level required
Top Low Cut
switch pressed
4 subwoofers (stereo) with 2 top speakers 4 subwoofers (stereo) with 4 top speakers
TOP
TOP
SUB
SUB
4 x SW 112 4 x SW 112
4 x SW 115D /
SW 115E
4 x SW 118E
SUB
MONO
SUB
SUB
2 x CA 106
-6 dB
-1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
0dB
Sub Mono switch not
pressed / LED off
2 x CA 1201 4 x CA 1201
2 x CA 1215 4 x CA 1215
2 x CA 1515 4 x CA 1515
2 x Line 212
0 dB
1
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut switch
not pressed
TOP
TOP
SUB
SUB
4 x SW 115D /
SW 115E
4 x SW 118E
Sub Mono switch not
pressed / LED off
TOP
TOP
SUB
SUB
SUB
MONO
4 x CA 106
0 dB
-1
-2 2
-3 3
-5 5
-6 6
GAIN
0dB
SUB
1
4 x Line 212
+6 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut
switch pressed
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 20 of 33
Page 21
User’s Manual System Controller C2
8.2.2 SW 215E / SW 215D / ACCESS B5 / ACCESS B10
Prerequisite:
− identical power amps for tops and bass systems with each power amp set at the same volume.
− bass systems placed on the floor
1 subwoofer with 2 top speakers 1 subwoofer with 4 top speakers
TOP
TOP
2 x CA 106
2 x CA 1201 4 x CA 1201
2 x CA 1215 4 x CA 1215
TOP
TOP
TOP
TOP
4 x CA 106
2 x CA 1515 4 x CA 1515
SUB
1 x SW 215D 1 x SW 215D
1 x SW 215E 1 x SW 215E
1 x ACCESS B5 1 x ACCESS B5
1 x ACCESS B10
SUB
MONO
0 dB
0dB
-1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Sub Mono switch
pressed / LED on
2 x Line 212
+6 dB
1
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut switch
not pressed
SUB
1 x ACCESS B10
SUB
MONO
Sub Mono switch
pressed / LED on
+6 dB
-1
-2 2
-3 3
-5 5
-6 6
0dB
SUB
GAIN
1
4 x Line 212
Only recom-
mended for
applications
with low bass
level required
Top Low Cut
switch pressed
2 subwoofers (stereo) with 2 top speakers 2 subwoofers (stereo) with 4 top speakers
SUB
TOP
2 x CA 1201 4 x CA 1201
TOP
2 x CA 106
SUB
2 x CA 1215 4 x CA 1215
2 x CA 1515 4 x CA 1515
2 x Line 212
SUB
TOP
TOP
TOP
TOP
SUB
2 x SW 215D 2 x SW 215D
2 x SW 215E 2 x SW 215E
2 x ACCESS B5 2 x ACCESS B5
2 x ACCESS B10
SUB
MONO
Sub Mono switch not
pressed / LED off
-6 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut switch
not pressed
0 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
2 x ACCESS B10
SUB
MONO
Sub Mono switch not
pressed / LED off
4 x CA 106
-1
-2 2
-3 3
-5 5
-6 6
0 dB
0dB
SUB
GAIN
1
4 x Line 212
+6 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut
switch pressed
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 21 of 33
Page 22
User's Manual System Controller C2
4 subwoofers (stereo) with 2 top speakers 4 subwoofers (stereo) with 4 top speakers
TOP
TOP
2 x CA 1201 4 x CA 1201
2 x CA 1215 4 x CA 1215
SUB
SUB
4 x SW 215D 4 x SW 215D
4 x SW 215E 4 x SW 215E
4 x ACCESS B5 4 x ACCESS B5
4 x ACCESS B10
Sub Mono switch not
pressed / LED off
SUB
MONO
SUB
SUB
2 x CA 106
not recom-
mended
Top Low Cut switch
not pressed
2 x CA 1515 4 x CA 1515
2 x Line 212
-6 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
TOP
TOP
SUB
SUB
4 x ACCESS B10
SUB
MONO
Sub Mono switch not
pressed / LED off
TOP
TOP
SUB
SUB
4 x CA 106
not recom-
mended
4 x Line 212
0 dB
0dB
-1
1
-2 2
-3 3
-5 5
-6 6
SUB
GAIN
Top Low Cut
switch pressed
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 22 of 33
Page 23
User’s Manual System Controller C2
8.3 Combination of Bass System ACCESS B10 with C10 Controller
The bass system ACCESS B10 is an optimal bass supplement when driven via the Controller ACCESS C10.
The C10 Controller has configuration switches for various configurations and applications.
Its special electronics release the B10's last reserves of power in the sub-low range. Compared to operation of the B10 with a C2 Controller (also possible), use with the C10 Controller ensures an additional improvement in bass performance.
C2-C10
Tops with extra
Subwoofer via C2
B10
[
TOP
sw
I
R
[
TOP
R
sw
C2 S ettings:
Fullrange Mode OFF
C10 Low Pass Setting:
55Hz
K&F full range systems with
K&F bass systems are to be
driven via the C2 Controller. The B10 is operated via
the C10 Controller as additional bass system: Set the
C2 Controller to Full Range
Mode 'OFF'. Generally, the
configuration switch for the
C10 Controller should be
set at 55 Hz.
C2-C10
-Flown tops via C2
-B10 via C10
TOP
L
TOP
R
B10
C2 Setti ngs :
Fullrange Mode ON
C10 Low Pass Setting:
55Hz
I
[
[
If flown K&F full range
systems are to be operated
via the C2 Controller with a
B10 as supplementary bass
system via the C10 Controller, then the option for the
C2 Full Range Mode 'ON'
should be selected. The
configuration switch on the
C10 Controller should be
set at 55 Hz.
C2-C10
-Stacked tops via C2
-B10 via C10
TOPLTOP
R
B10
C2 S ettings:
Fullrange Mode OFF
C10 Low Pass Setting:
60Hz
0
[
[
If top speakers which are
operated via the C2 Controller are stacked onto the
B10, and the B10 is operated via the C10 Controller, then the C2 Controller should be set to Full
Range Mode 'OFF'. The
configuration switch on the
C10 Controller should be
set to 60 Hz.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 23 of 33
Page 24
User's Manual System Controller C2
9. Wiring
Make sure that all units are switched off and all controls are turned down before connecting your C2 Controller.
− We recommend the use of high-quality speaker cables provided by KLING & FREITAG.
− For connections from the mixing console to the power amplifier inputs, please use
2-pin shielded microphone cable with high-quality connectors.
− Avoid ground loops (see chapter 9.2 )
− Please pay attention to the respective pin diagrams in this manual!
− Make sure that the +/- polarity of the speakers at the amplifier is correct. When
simultaneously using power amplifiers from different manufacturers, be sure to
use the correct specific pin configuration. It may be necessary to modify the pin
configuration on the power amplifiers or on the connectors leading to them.
− Upon completing the wiring, ensure that the connected speaker channels are
working in phase. To do so, use i.e. a phase checker. A phase error can also be
recognized when the connected channels are used simultaneously. During simultaneous use the bass frequencies become notably quieter or the mid-frequencies
such as voices cannot be located.
− To avoid loss of power, the cables should have a minimum wire gauge of 2.5
mm² - more for longer cabled distances. A minimum wire gauge can be easily calculated with the following formula:
Minimum Wire Gauge (mm²) =
Required Cable Length (m)
2 x Speaker Impedance (Ω)
If several loudspeakers are connected, the signal can be linked through from one loudspeaker to the next. Please make sure that the total impedance of the loudspeakers R(Ω)
is not lower than the minimal impedance indicated on the power amplifier.
1/R
+ 1/R2 + 1/R3 + ... = 1/R
1
total
9.1 Connecting the Speakon connectors to the terminal
1.
2.
1.
2.
3.
Important
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 24 of 33
Page 25
User’s Manual System Controller C2
9.2 Avoiding Ground Loops
9.2.1 What is a Ground Loop?
Every component of a P.A. or Hi-Fi System has its own internal 0V reference (ground).
This point is often connected to the protective earth connector (PE / Ground). If two
or more units are connected to one another with a line level audio cable, there may
be a ground connection through the ground of the power supply cable (yellow-green)
as well as through the shielding of the audio cable. The voltage difference between
these two ground points causes audible interference to come from the speaker.
9.2.2 Avoiding Ground Loops
If there is a loud humming or buzzing after the speaker system has been connected,
then check that an unwanted "ground loop" has not been built into the system. The
C2 Controller as well as some power amplifiers facilitate a ground lift switch. Set the
ground lift switch of the C" Controller to the 'Lift' position first. If the humming is still
audible, then set the ground lift switches of the amplifiers to the 'Lift' position one
after the other. If the noise is still audible, check if
1. the noise is caused by a ground loop before the power amplifiers or controllers (e.g. mixing console, effects or equalizers).
2. the system or parts of the system are connected to an "unclean" power supply - meaning one which is also running large motors or lighting systems. An
"unclean" supply voltage, electrostatic and electromagnetic fields can cause
interference.
Warning
Please observe the following basic rules:
− Never!!! try to avoid a ground loop by disconnecting or taping the protec-
tive earth contact at the mains connector! Extremely dangerous!
− If possible, only use high-quality audio appliances with balanced signal outputs
and with power cables with PE connectors.
− Use high-quality cables with good shielding.
− The point of ground for all connected components should merge at one central
point. The power connections should lead out in a radial manner from one point
and not be linked from one unit to the next.
− When installing appliances that create strong electrostatic or electromagnetic
fields (large transformers, switch-mode power supplies), maintain some distance
from other audio appliances. In extreme cases, the only solution is to create a
completely independent 'audio ground'; in other cases, it is sufficient to connect
a filter in front of the audio equipment.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 25 of 33
Page 26
User's Manual System Controller C2
A
w
10. Configurations and Wiring Diagrams
10.1 Full Range Mode (without additional Subwoofer)
LINK, e.g. to next controller
KLING &
LL SPEAKONS Front Vie
1+/1-
FREITAG
SOUND SYSTEMS
CH1 TOP OUTCH1 SUB OUT
CH2 SUB OUT
CH2 TOP OUT
CHANNEL 2 INCHANNEL 1 LINKCHANNEL 1 IN CHANNEL 2 LINK
INPUT
KLING &
SER No.
FREITAG
240V / 50Hz
FUSE: 100mA / SLOW BLOWCE
REMOTE CONTROL
MADE IN GERMANY
CH2 TOP AMPCH2 SUB AMP
CH1 TOP AMPCH1 SUB AMP
OPTIONAL
REMOTE
UNIT
HF TOP
SUB
FULLRANGE
MONO
MODE
BOOST
LOW CUT
SUB
INPUT GAIN
GAIN
GND
LIFT
CH1 INPUTCH2 INPUT
AMP RETURN CH2
LF -IN |LF +IN| -HF IN+
L
A
N
G
I
S
B
U
U
S
S
1
1
H
H
C
C
I
M
I
L
B
T
L
A
N
G
I
S
P
P
O
O
T
T
1
1
H
H
C
C
AMP RETURN CH1
LF -IN |LF +IN| -HF IN+
SYSTEM
C2
CONTROLLER
L
L
A
A
T
T
T
N
I
I
N
I
G
M
M
G
I
M
I
I
I
I
S
L
L
S
L
P
P
B
B
R
U
U
O
O
T
S
S
E
T
2
2
2
2
W
H
H
H
H
O
C
C
C
P
C
SYSTEM
CONTROLLER
Rear View
C2
OUTPUTS
-
+
-
INPUT CH 2 INPUT CH 1
CH 2 CH 1
+
The countersunk switch 'Full-Range Mode' on the C2 Controller should be pressed
and the LED assigned to it should light up. The full-range switch accentuates the bass
frequencies of the mid-high systems, giving a more balanced sound to music programmes.
If you are using the mid-high systems in a cluster (speakers in close proximity) or as a
stage monitor, press the 'Top Low Cut' switch on the C2 Controller.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 26 of 33
Page 27
User’s Manual System Controller C2
A
S
10.2 Full Range Systems & Subwoofers in 2-Way Active Mode
For using Subwoofers
with XO, set switch on
the back to 'XO OFF'
LINK, e.g. to next controller
LL SPEAKON
1+/1-
(OPTIONAL)
REMOTE
UNIT
KLING &
FREITAG
SOUND SYSTEMS
CH1 SUB OUT CH2 TOP OUTCH2 SUB OUT
240V / 50Hz
CE
FUSE: 100mA / SLOW BLOW
CH1 TOP OUT
SER No.
REMOTE CONTROL
INPUT
MADE IN GERMANY
INPUT GAIN
CHANNEL 2 LINKCHANNEL 2 INCHANNEL 1 IN CHANNEL 1 LINK
KLING &
FREITAG
GND
CH2 SUB AMP
LIFT
CH1 TOP AMPCH1 SUB AMPCH2 TOP AMP CH1 INPUT
FULLRANGE
TOPHF
SUB
LOW CUT
MODE
BOOST
MONO
SUB
GAIN
AMP RETURN CH2 AMP RETURN CH1
CH2 INPUT
-LF+
SYSTEM
C2
L
L
CONTROLLER
L
L
A
A
A
A
T
T
T
I
T
N
I
N
N
I
I
N
G
G
M
M
M
G
M
G
I
I
I
I
I
I
I
I
L
S
L
S
S
L
S
L
P
P
P
P
B
B
B
B
R
U
U
U
U
O
O
O
O
E
S
S
T
T
S
S
T
T
2
2
1
1
1
1
2
2
W
H
H
H
H
H
H
H
H
O
C
C
C
C
P
C
C
C
C
-HF+C2-LF+-LF+ -HF+ -LF+
SYSTEM
CONTROLLER
1
2
3
1
2
3
AMP MID/HIGH
AMP BASS
+- -+
CH 2 CH 1
+- -+
CH 2 CH 1
INPUT
CH 2 CH 1
1
2
3
INPUT
CH 2 CH 1
1
2
3
The switch "XO" on the connecting terminal of the subwoofer must be at "OFF" for
this mode of operation:
Switch on the subwoofer’s connecting terminal
The countersunk switch 'Full-Range Mode' on the C2 Controller should not
be
pressed and the LED assigned to it should not light up.
When using the mid-high systems in a cluster (speakers in close proximity), activate
the "Top Low Cut" switch on the C2 Controller.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 27 of 33
Page 28
User's Manual System Controller C2
10.3 Combination with Subwoofer ACCESS B10 via Controller C10
LINK to controller C10 channel 2
KLING &
ALL SPEAKONS Front View
1+/1-
FREITAG
SOUND SYSTEMS
CH1 TOP OUTCH1 SUB OUT
CH2 SUB OUT
CH2 TOP OUT
CHANNEL 2 INCHANNEL 1 LINKCHANNEL 1 IN CHANNEL 2 LINK
INPUT
KLING &
SER No.
FREITAG
REMOTE CONTROL
OPTIONAL
REMOTE
UNIT
240V / 50Hz
FUSE: 100mA / SLOW BLOW
CE
MADE IN GERMANY
INPUT CH 2 INPUT CH 1
CH2 TOP AMPCH2 SUB AMP
-
CH 2 CH 1
CH1 TOP AMPCH1 SUB AMP
OUTPUTS
+
HF TOP
SUB
FULLRANGE
MONO
MODE
BOOST
LOW CUT
SUB
INPUT GAIN
GAIN
AMP RETURN CH2
GND
LIFT
-
LF -IN |LF +IN| -HF IN+
CH1 INPUTCH2 INPUT
+
SYSTEM
L
L
L
L
A
A
CONTROLLER
C2
A
A
T
T
T
T
I
N
N
I
N
I
N
I
M
G
M
G
G
G
I
M
I
M
I
I
I
I
I
I
L
L
S
S
S
S
L
L
P
P
P
P
B
B
B
B
R
U
U
U
U
O
O
O
O
S
T
E
S
S
T
S
T
T
2
1
1
1
2
2
2
1
W
H
H
H
H
H
H
H
H
O
C
C
C
P
C
C
C
C
C
AMP RETURN CH1
LF -IN |LF +IN| -HF IN+
SYSTEM
CONTROLLER
Rear View
C2
Controller C10 channel 1
KLING
FREITAG GmbH
&
+15V e.g. for optional
power sequencing
If Mono Mode is
not available,
link CH 1
to CH 2
and turn
both
chanels
to the
same
level
CONTROLLER K&F ACCESS C10
Power Requirements:
115
2
3
0
Fuse 115 / 230V:
Serial Number:
VOLTAGE
SELECTOR
READ MANUAL BEFORE USE
If available use
Dual Mono Mode
CH 2 CH 1 (Mono)
Inputs
INPUT LINK e.g. to next C2 or C10 etc.
L
B
I
115 / 230VAC
50-60Hz / 30VA
T 500 / T 315mA
POWER SEQUENCE
Made in
SEND (+15 V)
Germany
SENSE BASS A
SPEAKON
+
+1
-
-
2IN
1
+-2
SENSE BASS B
A
XLR
S
231 21
S
2
3
1
+
3
O
U
-
T
PARALLEL
I
F
N
21
1
2
P
T
3
3
U
T
LINK
PARALLEL BASS OUT e.g. to next amp
BASS
SPEAKER A
Dual Mono
Bass A
-
Ground
Lift
-
+
CH 2
Sequence
Ch 2
snd rcv snd rcv
Bass B
+
CH 1
Ch 1
BASS
SPEAKER B
Subwoofer B10 channel 1
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 28 of 33
Page 29
User’s Manual System Controller C2
10.4 Alternative Wiring without Frontal Connectors
It sometimes makes sense, e.g. in the case of permanent installation, to avoid connections at the front of the controller. Frontal connections can be unpleasing to the eye,
or perhaps doors on built-in racks can no longer be closed. For this reason it is possible to connect the C2 Controller solely at the rear.
Particular care should be taken that the sense connectors are wired parallel to the
corresponding power amp outputs.
The following diagram shows the correct alternative wiring
For using Subwoofers
with XO, set switch on
the back to 'XO OFF'
INPUT
KLING &
240V / 50Hz
CE
FUSE: 100mA / SLOW BLOW
SER No.
REMOTE CONTROL
MADE IN GERMANY
FREITAG
GND
CH2 SUB AMP
LIFT
CH1 TOP AMPCH1 SUB AMPCH2 TOP AMP CH1 INPUT
CH2 INPUT
AMP RETURN CH2 AMP RETURN CH1
-LF+
-HF+C2-LF+-LF+ -HF+ -LF+
SYSTEM
CONTROLLER
INPUT
CH 2 CH 1
1
2
3
CH 2 CH 1
1
2
3
2
INPUT
2
AMP MID/HIGH
1
3
AMP BASS
1
3
+- -+
CH 2 CH 1
+- -+
CH 2 CH 1
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 29 of 33
Page 30
User's Manual System Controller C2
11. Operating the Controller
− Make sure to observe the installation instructions and safety notes shown in the
loudspeaker manuals and in the user's manual for loudspeakers and assembly
equipment.
− Switch off all equipment and turn down all level controls.
− Wire the speaker systems according to the wiring diagrams as shown above.
− Now switch on the peripheral equipment first (mixing console, effects etc.), fol-
lowed by the C2 Controller and the power amplifiers. Always use the before mentioned switching order. Otherwise switching noises may damage the system.
− If there is interference, turn off all appliances in the reverse order and check all
cable connections (see chapter 9.2 ).
− Next, turn on the C2 Controller and the other peripheral equipment and make
sure there is no interference.
Important
− Now put a low level signal into the system and check for the correct function of
the system. In doing so, all amplifier input controls need to be turned off again.
Now turn on the level control for the first top speaker channel and check that the
correct signal is coming out of the speaker.
− The Sense LED for the top speaker (i.e. CH 1 TOP signal) of the K&F C2 Controller
will light up green at a level of at ca. -40dB. The other channels of the system are
checked in the same way. If the wrong LED lights up or a wrong (i.e., in 2-way active mode, low signal from a mid-high speaker) or distorted signal occurs, then
there is a mistake in the wiring.
− The system should now be ready to operate.
− Turning down the input level controls may not always prevent distortions in the
input section of the power amplifier, especially if this section has a relatively low
headroom. A clipping signal may not be displayed by the clipping indicator then!
To prevent signal interruptions caused by protection circuits or damages to the
speakers, turn the level controls of the power amplifier to the maximum position,
if possible. The output level of the mixing console or the controller should be set to
a level that doesn't overload the power amplifiers.
− When turning off the system, the input controls for the power amplifiers should be
turned down first followed by the power switches of the amplifiers. After that, the
other appliances can be turned off.
− The crossovers of the top speakers are equipped with protection circuits for the
high frequency driver and the crossover itself. These circuits cut off the signal current when highly overloaded. If the high speaker turns off, reduce the volume. After a few seconds, it will turn back on automatically.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 30 of 33
Page 31
User’s Manual System Controller C2
12. Technical Specifications
Input Nominal + 6 dB
+20 dBu
XLR connectors
Outputs +6 dB nominal ( +1.55 V ) electr. balanced
XLR connectors
Sub D for remote control
Output impedance
Input Gain
Sub Gain
Sense Phoenix MSTB 2.5 / 6 --- ST --- 5.08,
electronically balanced
Limiter ratio > 10:1
Common mode rejection @15 kHz > 40 dB
Signal to noise @ +6 dBm 98 dB
THD ( THD+N ) @ +6 dBm < 0.03%
LED displays Limit
Signal
Sub Mono
Full Range Mode
Power
Switchable functions
Front HF Boost
Top Low Cut
Full Range / 2-way
Sub mono / sub stereo
Rear Ground lift
Supply voltage
alternative
Power consumption
Fuse
Power connector
20kΩ
270 Ω
Variable, - 40 dB to +6 dB
Variable, - 6 dB to +6 dB
input impedance: 220 kΩ
AC 230 V, 50 (230 V version)
AC 155 V, 60 Hz (115 V version)
10 VA
230 V version: 100 mA T
115 V version: 200 mA T
IEC power socket
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 31 of 33
Page 32
User's Manual System Controller C2
T
T
13. Block Diagram
SUB CH2
AMP
HP 2POLE
HP 2POLE
VCA ADJ. AMP
SW/RELAIS
TOP-OU
GAIN
HI-PASS
HI-PASS
AMP
AP 1POLE AP 1POLE
HP 2POLE
2-WAY/
FULLRANGE
GAIN
ALLPASS ALLPASS
HI-PASS
LIMIT-PEAK
DIFFAMP
LIMIT-RMS
AMP-RETURN
POT
GAIN
REMOTE
SUB-OU
VCA ADJ. AMP
POT
GAIN
POT
GAIN
REMOTE
LIMIT-PEAK
DIFFAMP
AMP-RETURN
LIMIT-RMS
AMP
EQ-CUT
EQ-BOOST
SW/RELAIS
SW/RELAIS
GAIN
PEQPEQ
ALLPASSALLPASS
+
SUM
SUB MONO
AP 1POLE AP 1POLE
HP 2POLE
HI-PASS
HP 2POLE
FILTER-MODUL SUB
HI-PASS
TP 2POLE
LO-PASS
TP 2POLE
LO-PASS
EQ-CUT
FILTER-MODUL TOP
EQ-BOOST
PHASE HI-PASS
PHASE R. HP 2POLE
EQ-CUTEQ-CUTEQ-BOOST
PEQ PEQPEQ
PEQ
EQ-BOOST
PEQ
PEQ
TOP
SW/RELAIS
LOW-CUT
HIGH-
SW/RELAIS
BOOST
DIFFAMP
INPUT
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 32 of 33
Page 33
User’s Manual System Controller C2
14. Regulations for Disposal
14.1 Germany:
It is not allowed to dispose of used electrical equipment as domestic waste.
But please do not
All Kling & Freitag products are plain business-to-business (B2B) products. Disposal of
Kling & Freitag products labelled with a waste bin sign have thus to be disposed of by
Kling & Freitag alone. Please call Kling & Freitag at the number stated below if you have
a Kling & Freitag product to be disposed. We will offer you a straightforward and professional disposal not affecting costs.
If there is no dustbin sign on one of your Kling & Freitag products, because they have
been sold before March 2006 then by law the owner is in charge of the disposal. For
these we will be happy to assist and offer you proper ways of disposal.
Telephone number to call about the disposal of used Kling & Freitag products:
+49 (511)-96 99 7-0
Explanation:
With the ElektroG (law relating to electrical and electronic equipment and appliances)
we have complied with the EU-directive on waste electrical and electronic equipment
(WEEE, 2002/96/EC)
The Kling & Freitag AG has thus labelled all products mentioned in the WEEE from
03/24/2006 onwards with a sign with a crossed out waste bin and a white bar below.
This sign indicates that the disposal into the domestic waste is prohibited and that the
product has been put into circulation at the 03/24/2006 earliest.
The Kling & Freitag GmbH has been legally registered as a manufacturer with the registration office EAR. Our WEEE Registration-Nr. is: DE64110372
For the German Registration office EAR we have accredited that our products are sole
B2B products.
dispose of them at official collecting points for recycling either!
14.2 EU, Norway, Island, and Liechtenstein (not Germany):
It is not allowed to dispose of used electrical equipment as domestic waste.
The Kling & Freitag AG has thus labelled all products coming from EU-Member countries as well as Norway, Island and Liechtenstein (except Germany) mentioned in the
WEEE from 08/13/2005 onwards with a sign with a crossed out waste bin and a white
bar below. This sign indicates that the disposal into the domestic waste is prohibited
and that the product has been put into circulation at the 08/13/2005 earliest.
Unfortunately the European directive WEEE has been complied with implementing different national provisions of law throughout all member countries, which makes it impossible for us to offer consistent solutions for the disposal throughout Europe.
Responsible for complying with these provisions of law is the local distributor (importer)
of each country.
For proper disposition of used products in accordance with these local provisions in
the mentioned countries of the European Union (except Germany) please ask your
local dealer or the local authorities.
14.3 Other countries
For proper disposition of used products in accordance with local provisions in other
countries please ask your local dealer or the local authorities.
KLING & FREITAG GMBH ©2003 - 2006 Version 4.0, 23.03.2006 Page 33 of 33
Loading...