Dynacord Stereo Amplifier CL 1200 User Manual

OWNER‘S MANUAL  
LINEAR PRECISION POWER AMP  
 
IMPORTANT SAFETY INSTRUCTIONS  
The lightning flash with arrowhead symbol, within an  
equilateral triangle is intended to alert the user 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 persons.  
The exclamation point within an equilateral triangle is  
intended to alert the user to the presence of important  
operating and “maintenance” (servicing) instructions in  
the literature accompanying the appliance.  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
Read these instructions.  
Keep these instructions.  
Heed all warnings.  
Follow all instructions.  
Do not use this apparatus near water.  
Clean only with a dry cloth.  
Do not “block” any ventilation openings. Install in accordance with the manufacture’s instructions.  
Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus  
(including amplifiers) that produce heat.  
9.  
Do not defeat the safety purpose of the polarized or the grounding-type plug. A polarized plug has two blades  
with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide  
blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an  
electrican for replacement of the obsolete outlet.  
10.  
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,  
and the point where they exit from the apparatus.  
11.  
12.  
Only use attachments/accessories specified by the manufacturer.  
Use only with the cart, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a  
cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.  
13.  
14.  
Unplug this apparatus during lightning storms or when unused for a long period of time.  
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged  
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the  
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.  
Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases,  
are placed on the equipment.  
15.  
16.  
17.  
To completely disconnect this equipment from the AC Mains, disconnect the power plug from the AC receptacle.  
The mains plug of the power supply cord shall remain readily operable.  
Management of WEEE (waste electrical and electronic equipment) (applicable in Member States of the European  
Union and other European countries with individual national policies on the management of WEEE) The symbol  
on the product or on its packaging indicates that this product may not be treated as regular household waste, but  
has to be disposed through returning it at a Telex dealer.  
IMPORTANT SERVICE INSTRUCTIONS  
These servicing instructions are for use by qualified personnel only. To reduce the risk of  
electric shock, do not perform any servicing other than that contained in the Operating  
Instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.  
CAUTION:  
1.  
2.  
Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when  
servicing the appliance.  
Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be  
operated and is connected to the mains.  
3.  
4.  
Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.  
The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure),  
respectively between the mains poles has to be 3 mm and needs to be minded at all times. The minimum distance  
between parts carrying mains voltage and any switches or breakers that are not connected to the mains (secondary  
parts) has to be 6 mm and needs to be minded at all times.  
5.  
Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only  
permissible when using original parts.  
6.  
7.  
Altering the circuitry without prior consent or advice is not legitimate.  
Any work security regulations that are applicable at the location where the appliance is being serviced have to be  
strictly obeyed. This applies also to any regulations about the work place itself.  
All instructions concerning the handling of MOS - circuits have to be observed.  
8.  
NOTE:  
SAFETY COMPONENT ( MUST BE REPLACED BY ORIGINAL PART )  
3
 
DESCRIPTION  
Congratulations! With buying a DYNACORD CL-SERIES power amplifier you have chosen an appli-  
ance that employs most advanced technology.  
CL-Series power amps combine outstanding audio performance, highest reliability and operational  
safety.  
The audio performance of CL power amps are simply extraordinary. Optimised power supply units em-  
ploying low-leakage toroidal transformers and the consistent use of Class-H technology provide exten-  
sive headroom far above the stated nominal output. At the same time this contributes to a reduction in  
weight and power dissipation.  
The CL1200/1600/2000 is designed in Class-H technology, i.e. the power amp provides extremely  
fast, signal-dependent operating voltage switching, which results in doubling the regular supply voltage  
when needed. Compared to Class-AB power amps, Class-H power amps generate by far less power  
dissipation at identical output. Consequently, reduced leakage power or dissipation is synonymous to  
less waste heat – energy is used more efficiently. As a result, installing Class-H power amps within rack  
shelf systems is possible with less space between appliances. In addition to that and despite offering  
identical output, power consumption is a lot less than in Class-AB operation.  
DYNACORD CL-SERIES power amps have been designed to fulfil even the most demanding  
requirements of touring applications. CL-Series amps are protected against thermal and electrical  
overload, short circuit and the occurrence of HF/DC at the outputs. Back-EMF-Protection eliminates  
the risk of the output transistors being damaged by electrical energy back-feed. The power outputs are  
switched via relay with a time delay during soft-start. An inrush current limiter prevents mains fuses from  
blowing.  
Mechanical construction and workmanship also comply with the highest precision manufacturing  
standards. The rigid sheet steel chassis even resists the most wearing tour operation. Two three-speed  
high performance fans (off/slow/fast) guarantee outstanding thermal stability at absolute low running  
noise. The ventilation is directed front-to-rear allowing trouble-free operation even in smaller amp-racks.  
The electronically balanced inputs are carried out via XLR-type connectors. Direct-Outs for through  
connecting the audio signal are also provided via XLRM-type connectors. Input Routing allows selecting  
DUAL (stereo) or PARALLEL (monaural) operation mode. By means of the separate BRIDGED OUT-  
connector and a Bridged Mode-switch, switching to „Mono Bridged“ operation is truly uncomplicated  
as well. The recessed mounted dB-scaled level controls ensure reliable protection against mechanical  
damage. These particularly precise, secure to operate detent-potentiometers are located on the  
front panel. CL-Series power amps provide the opportunity for retrofitting an internal analogue signal  
processor board with x-over and filter functions.  
The easily readable LED display provides a quick overview of the power amp’s current operational  
status. The power outputs CHANNEL A, CHANNEL B and BRIDGED OUT are carried out as extremely  
durable SPEAKON-type connectors. Also located on the rear panel is a Ground-lift switch, which helps  
eliminating ground-noise loops by separating the power amp’s enclosure from the circuit ground. In  
normal operation, all CL-Series power amps are capable of driving loads as low as 2ohms. In Mono-  
Bridged mode the allowable minimum load is 4ohms.  
This owner’s manual outlines and explains several other features of your CL-Series power amplifier.  
Please, make sure to carefully read all of it and mind the instructions.  
4
 
DESCRIPTION  
UNPACKING & WARRANTY  
Carefully open the packaging and take out the power amplifier. Next to the power amplifier itself, the  
package also includes this owner’s manual, a mains cord and the warranty certificate. Keep the original  
invoice, which states the purchase/delivery date together with the warranty certificate at a safe place.  
INSTALLATION NOTES  
Generally, installing or mounting power amps should be carried out in a way that guarantees continu-  
ously unopposed front-to-rear air circulation. Installation of appliances with opposite air circulation within  
one cabinet or closed rack shelf system is not recommended. When including an appliance in a closed  
cabinet or rack shelf system make sure to provide sufficient ventilation. Leave a gap of at least 60mm  
x 330mm (up to the cabinet’s top ventilation louvers) for air circulation between the rear of the power  
amplifier and the cabinet’s/rack’s rear inner wall. Make sure to leave at least 100mm of space above the  
cabinet or rack shelf system. Since temperatures inside of the cabinet or rack shelf system can easily  
rise up to 40°C during operation, bearing in mind the maximally allowable environmental temperature  
during operation for all other appliances installed in the same rack shelf system is mandatory (also refer  
to “MAINS OPERATION AND RESULTING TEMPERATURE”).  
Caution: For trouble-free operation exceeding the maximally allowable environmental tem-  
perature of +40°C is not permissible.  
The use of installation rails or optionally available “rear-rack-mount” rails is strongly recommended when  
installing the appliance in a rack shelf system or cabinet to prevent the front panel from bending.  
The power amplifier has to be protected against: dripping or splashing water, direct sunlight, high tem-  
peratures or direct influence of heat sources, high humidity, extensive dust and vibrations.  
Condensation on internal parts may occur when transporting the power amplifier from a cold into a  
warmer environment. In that case operation is only permissible after the appliance has gained the  
new temperature (after approximately one hour). If foreign objects or liquids have entered the power  
amplifier’s enclosure make sure to instantly separate the appliance from the mains power and contact  
an authorised service centre for inspection before continuing operation.  
5
 
FRONT PANEL  
Use the POWER switch, located on the front panel’s, right side to switch the appliance’s power on. The  
soft-start function limits against current inrush peaks on the mains, which in addition prevents the mains  
line protection switch from activating during power-on. The loudspeaker outputs are activated via relay  
switching with a delay of approximately 2 seconds to efficiently attenuate eventual power-on noise. The  
PROTECT LED lights during the delay time and the fans run at maximum speed. This is normal, con-  
firming the correct operation of the protection circuitry.  
POWER-indicator not lighting are: the appliance is not connected to the mains  
or the primary fuse is defective.  
The PROTECT LED indicating that one of the internal protection circuits  
against thermal overload, short-circuit, Back-EMF, RF-occurrence at the output,  
etc., has been activated. The output relays interrupt the connected loads from  
the power amps while input signals are interrupted as well, preventing the connected  
loudspeaker systems and the power amplifiers themselves from being damaged.  
Whatever caused the fault – e.g. a short-circuited speaker cable – needs to be reme-  
died. In case of thermal overload you have to wait until the power amplifier automati-  
cally regains normal operation.  
The SIGNAL LED lights as soon as an audio signal of approximately 30dB below full  
modulation is present at the output. The LED is dimmed when speaker cables are  
hort-circuited or a protection circuit has been activated.  
The 0dB LED lights whenever the power amplifier is driven at its maximum. Higher  
nput voltage does not result in higher peak output voltage. In addition, the 0dB  
ndicator comes in handy when adjusting external limiters.  
This indicator lights as soon as the integrated dynamic audio signal limiter is  
activated and the power amplifier is driven at the clipping limit or generally at its  
maximum capacity. Short-term blinking is not a problem, because the internal limiter  
controlls input levels of up to +21dBu down to a THD of approximately 1%. If, on the  
other hand, this LED lights constantly, reducing the volume is recommended to  
prevent the loudspeaker systems connected from being damaged by probable  
overload.  
Detent potentiometers scaled in dB (steps of 1dB) for  
adjusting the power amp’s overall volume. To prevent  
distortion in mixing consoles connected to your CL-Series  
amp, setting these controls to a value between 0dB and -6dB  
is generally recommended. The dB-scale provides direct  
indication of the control attenuation applied to the fixed  
internal amplification.  
6
 
REAR PANEL  
INPUT A / INPUT B  
The inputs INPUT A & INPUT B of the CL series are electronically  
balanced. The voltage gain of all models is set to 32 dB (constant  
gain). This results however in different input sensitivities for the  
different models (see table), but the level adjustment of active  
crossovers or signal processors in multi-way systems is much  
easier. Power amplifiers with different output power can be  
changed without consideration, the crossovers have not to be  
adjusted due to the constant amplification of the whole unit line.  
If external voltage limiters are used, they should be set to the  
used power class with consideration of the connected speaker  
systems. The XLR-type connectors OUTPUT A & OUTPUT B  
are prepared for „through-connecting“ input signals to additional  
external power amps. The input signal is directly routed to these  
output connectors. There are no repeaters or other electronic  
components within that signal path. Accordingly, input and output  
connectors of the corresponding channel are interconnected in  
parallel, offering permanent electrical connection, without regard  
to the setting of the Power-ON switch.  
CL800 +1.15dBu / 0.88V  
CL1200 +3.2dBu / 1.12V  
CL1600 +4.7dBu / 1.33V  
CL2000 +5.5dBu / 1.46V  
Although having XLR-type output connectors, some mixing console models provide unbalanced  
output connection only. When using mixers with unbalanced outputs, bridging PIN1 and PIN3  
of the power amp’s input connectors or leaving PIN3 of the cable’s plugs unconnected is  
necessary. Otherwise, when feeding in unbalanced audio signals via PIN3 (b, -, „cold“) and PIN2  
(a, +, „hot“), strange humming and RF-interference may occur, which very likely will damage the  
power amplifier and/or the connected speaker cabinets.  
NF-CONNECTION CORDS  
Choosing high-quality balanced cables (two conductors for the audio signal plus seperate shielding  
mesh) with XLR-type connectors are recommended for LF-signal connection. Although connecting un-  
balanced cables to the power amplifier inputs is possible as well, using balanced cables is always pref-  
erable. A great number of today’s audio appliances employ balanced outputs. With balanced cabling,  
the shield connects all metal enclosure parts and therefore efficiently eliminates the introduction of ex-  
ternal interference – mostly noise and hum.  
XLR-
type connector pin-assignment  
XLR (male)  
XLR (female)  
PARALLEL  
The input connectors of channel A and channel B are electrically connected in parallel  
when the selector switch is set to PARALLEL. However, individually controlling the  
volume of both channels is still possible via the corresponding level controls A and B.  
DUAL  
If the selector switch is set to DUAL, the audio signals of channels A and B are  
independently amplified.  
7
 
REAR PANEL  
POWER AMP OUTPUT CONNECTORS  
Power amp output connection for the two channels A  
(left) and B (right) is provided via SPEAKON-type output  
connectors.  
A plastic cover to prevent inadvertent erroneous  
connection protects the BRIDGED OUT connector. Make  
sure to remove the cover only when actually operating the  
power amplifier in Bridged-Mode.  
CAUTION!  
Pins 2+/2- of the CHANNEL A SPEAKON output, which  
normally are not in use, are also connected to output B to  
ensure comfortable connection of 2-way speaker cabinets  
(e.g in Bi-Amping Mode) when using 4-wire Speakon  
cables.  
To prevent short-circuit and/or to protect your speaker systems from being damaged when connecting  
the cabinets, please make sure to mind the Low- and High channels’ specific pin-assignments!  
If, for example, the subwoofer audio signal is used to feed a tweeter, it is more than likely that this will  
instantly destroy the HF-driver’s coil.  
WARNING:  
The speaker output terminals are marked with a symbol “  
”, which signifies that these  
terminals are hazardous live and present a risk of electric shock to the user.  
BRIDGED MODE  
With the BRIDGED-MODE switch being engaged, using the channel A input  
for audio signal feed is mandatory, since input B provides no function. While  
the amplifier of channel A operates as usual, the audio signal is internally  
inverted and routed to the amplifier of channel B. Both amps – A and B – now  
work in push-pull operation to provide doubled output voltage at the  
BRIDGED-OUT connector.  
The regular output voltage of each amplifier channel A / B is still present at the corresponding output  
connector CHANNEL A or CHANNEL B. However, using these signals is not recommendable because  
of the aforementioned phase inversion. Operating the power amp in Bridged Mode with loads of 2ohms  
connected is not allowable.  
CAUTION: Extremely high voltages might be present at the BRIDGED OUT connector during  
Bridged-Mode operation. The connected loudspeaker systems have to be capable of handling  
such high voltages. Please make sure that power handling specifications as stated in the docu-  
mentation supplied with your speaker systems match the specifications of the power amplifier.  
GROUND-LIFT SWITCH  
The ground-lift switch allows eliminating noise loops. If the power amplifier is  
operated together with other equipment in a 19“ rack-shelf, setting the switch  
to its GROUNDED position is recommended. If the power amplifier is operated  
together with appliances with differing ground potentials, set the switch to its  
UNGROUNDED position.  
MAINS INPUT  
Under normal circumstances, the mains fuse only blows in case of fault.  
Replacing the fuse is only permissible when using a new fuse of the same  
type with identical amperage, voltage and blow characteristics. If the mains  
fuse blows more often, please contact an authorized service centre.  
The high-performance mains cord supplied with your power amplifier complies  
to applicable safety regulations, plus that its diameter corresponds to the power  
amp’s power output capacity. Make sure to use the supplied mains cord for connecting the power amp  
to the mains. Using mains cords with smaller diameters results in higher leakage and consequently re-  
duced maximum power output capacity.  
At 100V and 120V units the mains fuse is installed internally. This is fore safety reasons. In case of a  
blown mains fuse please contact a qualified service personnel for servicing.  
8
 
MAINS OPERATION & RESULTING TEMPERATURE  
MAINS OPERATION & RESULTING TEMPERATURE  
The following tables allow determining power supply and cabling requirements.  
The power drawn from the mains network is converted into output power to feed the connected  
loudspeaker systems and into heat. The difference between power consumption and dispensed power  
is called power dissipation (Pd). The amount of heat resulting from power dissipation might remain  
inside of a rack-shelf and needs to be diverted using appropriate measures. The following table is  
meant as auxiliary means for calculating temperatures inside of a rack-shelf system/cabinet and the  
ventilation efforts necessary.  
The column „Pd“ lists the leakage power in relation to different operational states. The column „BTU/hr“  
lists the dispensed heat amount per hour.  
U
mains  
[V]  
I
P
mains  
[W]  
P
out  
[W]  
Pd (6)  
[W]  
BTU/hr(4)  
CL800  
mains  
[A]  
idle  
230V  
230V  
230V  
230V  
230V  
230V  
254V  
230V  
254V  
230V  
230V  
230V  
230V  
230V  
230V  
230V  
0,42  
4,4  
7,2  
4,6  
3,1  
2,7  
3,0  
2,8  
3,1  
2,8  
6,4  
4,9  
11,2  
4,8  
4,2  
4,2  
50  
-
50  
170  
Max. Output Power @ 8Ω(1)  
Max. Output Power @ 4Ω(1)  
735  
2 x 240  
2 x 400  
2 x 133  
2 x 50  
2 x 50  
2 x 63  
2 x 50  
2 x 63  
2 x 40  
2 x 300  
2 x150  
2 x 600  
2 x 75  
2 x 75  
2 x 75  
255  
495  
504  
390  
325  
474  
330  
404  
360  
530  
520  
950  
650  
530  
535  
870  
1295  
770  
490  
425  
600  
430  
530  
440  
1130  
820  
2150  
800  
680  
685  
1690  
1720  
1330  
1110  
1615  
1125  
1380  
1230  
1810  
1775  
3240  
2220  
1810  
1825  
1/3 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(2)  
1/8 Max. Output Power @ 4Ω(2),(5)  
1/8 Max. Output Power @ 4Ω(3)  
1/8 Max. Output Power @ 4Ω(3),(5)  
Normal Mode (-10dB) @ 4Ω(1)  
Rated Output Power (0dB) @ 4Ω(1)  
Alert (Alarm) Mode (-3dB) @ 4Ω(1)  
Max. Output Power @ 2Ω(1)  
1/8 Max. Output Power @ 2Ω(1)  
1/8 Max. Output Power @ 2Ω(2)  
1/8 Max. Output Power @ 2Ω(3)  
U
mains  
[V]  
I
P
mains  
[W]  
P
[W]  
Pd (6)  
[W]  
BTU/hr(4)  
CL1200  
mains  
[A]  
out  
idle  
230V  
230V  
230V  
230V  
230V  
230V  
254V  
230V  
254V  
230V  
230V  
230V  
230V  
230V  
230V  
230V  
0,45  
6,3  
10,4  
6,2  
2,6  
2,9  
3,1  
2,9  
3,2  
2,4  
9,6  
7,0  
16,1  
3,8  
4,1  
4,4  
54  
-
54  
370  
720  
665  
250  
305  
314  
300  
364  
245  
750  
720  
1380  
419  
454  
494  
185  
1260  
2455  
2270  
855  
Max. Output Power @ 8Ω(1)  
Max. Output Power @ 4Ω(1)  
1070  
1920  
1065  
400  
2 x 350  
2 x 600  
2 x 200  
2 x 75  
2 x 75  
2 x 93  
2 x 75  
2 x 93  
2 x 60  
2 x 500  
2 x 250  
2 x 900  
2 x 113  
2 x 113  
2 x 113  
1/3 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(2)  
1/8 Max. Output Power @ 4Ω(2),(5)  
1/8 Max. Output Power @ 4Ω(3)  
1/8 Max. Output Power @ 4Ω(3),(5)  
Normal Mode (-10dB) @ 4Ω(1)  
Rated Output Power (0dB) @ 4Ω(1)  
Alert (Alarm) Mode (-3dB) @ 4Ω(1)  
Max. Output Power @ 2Ω(1)  
455  
1040  
1070  
1025  
1240  
835  
500  
450  
550  
365  
1750  
1220  
3180  
645  
2560  
2455  
4710  
1430  
1550  
1685  
1/8 Max. Output Power @ 2Ω(1)  
1/8 Max. Output Power @ 2Ω(2)  
1/8 Max. Output Power @ 2Ω(3)  
680  
720  
(1) Sine Modulation (1kHz)  
(4) 1BTU = 1055.06J = 1055.06Ws  
(2) VDE-Noise  
(5) 10% Mains Over Voltage  
(3) pink-Noise EN60065 / 7. Edition  
(6) Pd = Leakage Power  
The following factors allow direct proportional calculation of the mains current Imain for different mains supply voltages:  
100V = 2.3; 120V = 1.9; 220V = 1.05; 240V = 0.96  
9
 
MAINS OPERATION & RESULTING TEMPERATURE  
U
I
P
P
out  
[W]  
Pd (6)  
[W]  
BTU/hr(4)  
CL1600  
mains  
[V]  
mains  
[A]  
mains  
[W]  
idle  
230V  
230V  
230V  
230V  
230V  
230V  
254V  
230V  
254V  
230V  
230V  
230V  
230V  
230V  
230V  
230V  
0,5  
8,0  
13,2  
7,5  
3,0  
3,3  
3,6  
3,8  
4,1  
2,8  
12,5  
8,8  
20,0  
4,5  
5,0  
5,4  
65  
-
65  
440  
920  
828  
320  
370  
420  
380  
455  
310  
960  
910  
1800  
540  
550  
630  
220  
Max. Output Power @ 8Ω(1)  
Max. Output Power @ 4Ω(1)  
1440  
2520  
1360  
520  
2 x 500  
2 x 800  
2 x 266  
2 x 100  
2 x 100  
2 x 120  
2 x 100  
2 x 120  
2 x 80  
1500  
3140  
2825  
1090  
1260  
1435  
1295  
1550  
1060  
3275  
3105  
6140  
1840  
1875  
2150  
1/3 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(2)  
1/8 Max. Output Power @ 4Ω(2),(5)  
1/8 Max. Output Power @ 4Ω(3)  
1/8 Max. Output Power @ 4Ω(3),(5)  
Normal Mode (-10dB) @ 4Ω(1)  
Rated Output Power (0dB) @ 4Ω(1)  
Alert (Alarm) Mode (-3dB) @ 4Ω(1)  
Max. Output Power @ 2Ω(1)  
570  
660  
580  
695  
470  
2360  
1610  
4000  
815  
2 x 700  
2 x 350  
2 x 1100  
2 x 138  
2 x 138  
2 x 138  
1/8 Max. Output Power @ 2Ω(1)  
1/8 Max. Output Power @ 2Ω(2)  
1/8 Max. Output Power @ 2Ω(3)  
825  
905  
U
I
P
P
[W]  
Pd (6)  
[W]  
BTU/hr(4)  
CL2000  
mains  
[V]  
mains  
[A]  
mains  
[W]  
out  
idle  
230V  
230V  
230V  
230V  
230V  
230V  
254V  
230V  
254V  
230V  
230V  
230V  
230V  
230V  
230V  
230V  
0,6  
10,0  
16,3  
9,7  
72  
-
72  
512  
991  
979  
367  
446  
513  
444  
536  
358  
1050  
1055  
2255  
633  
744  
711  
246  
Max. Output Power @ 8Ω(1)  
Max. Output Power @ 4Ω(1)  
1712  
2991  
1646  
617  
2 x 600  
2 x 1000  
2 x 333  
2 x 125  
2 x 125  
2 x 151  
2 x 125  
2 x 151  
2 x 100  
2 x 850  
2 x 425  
2 x 1500  
2 x 188  
2 x 188  
2 x 188  
1747  
3381  
3342  
1252  
1522  
1749  
1515  
1827  
1222  
3583  
3600  
7694  
2160  
2539  
2426  
1/3 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(1)  
1/8 Max. Output Power @ 4Ω(2)  
1/8 Max. Output Power @ 4Ω(2),(5)  
1/8 Max. Output Power @ 4Ω(3)  
1/8 Max. Output Power @ 4Ω(3),(5)  
Normal Mode (-10dB) @ 4Ω(1)  
Rated Output Power (0dB) @ 4Ω(1)  
Alert (Alarm) Mode (-3dB) @ 4Ω(1)  
Max. Output Power @ 2Ω(1)  
4,0  
4,4  
696  
4,8  
815  
4,5  
725  
4,8  
838  
3,6  
558  
15,1  
10,9  
25,4  
6,0  
2750  
1905  
5255  
1008  
1119  
1086  
1/8 Max. Output Power @ 2Ω(1)  
1/8 Max. Output Power @ 2Ω(2)  
1/8 Max. Output Power @ 2Ω(3)  
6,5  
6,5  
(1) Sine Modulation (1kHz)  
(4) 1BTU = 1055.06J = 1055.06Ws  
(2) VDE-Noise  
(5) 10% Mains Over Voltage  
(3) pink-Noise EN60065 / 7. Edition  
(6) Pd = Leakage Power  
The following factors allow direct proportional calculation of the mains current Imain for different mains supply voltages:  
100V = 2.3; 120V = 1.9; 220V = 1.05; 240V = 0.96  
10  
 
SPECIFICATIONS  
- Amplifier at rated conditions, both channels driven, 8Ω load, unless otherwise specified.  
CL800  
CL1200  
CL1600  
CL2000  
Load Impedance  
2 Ω  
4 Ω  
8 Ω  
2 Ω  
4 Ω  
8 Ω  
2 Ω  
4 Ω  
8 Ω  
2 Ω  
4 Ω  
8 Ω  
Max. Midband  
600W  
400W  
240W  
900W  
600W  
350W  
1100W  
800W  
500W  
1500W 1000W  
600W  
Output Power  
THD = 1%, 1kHz , Dual Channel  
Rated Output Power  
THD < 0,1%, 20Hz … 20kHz  
---  
300W  
580W  
150W  
300W  
---  
500W  
850W  
250W  
450W  
---  
700W  
350W  
625W  
---  
850W  
450W  
750W  
Max. Single Channel  
Output Power  
Dynamic Headroom, IHF-A  
1100W  
1450W  
2200W 1200W  
2700W 1450W  
1900W 1150W  
Max. Single Channel  
Output Power  
Continuous, 1kHz  
800W  
---  
480W  
270W  
800W  
1200W  
---  
720W  
410W  
1500W  
---  
950W  
550W  
650W  
Max. Bridged  
Output Power  
THD = 1%, 1kHz  
1200W  
1800W 1200W  
2200W 1600W  
---  
3000W 2000W  
Maximum RMS Voltage Swing  
THD = 1%, 1kHz  
50V  
62V  
72V  
80V  
Power Bandwidth, ref. 1kHz  
THD =1%, half power @ 4 ohms  
10Hz … 60kHz  
32,0 dB  
Voltage Gain, ref. 1kHz  
Input Sensitivity  
at rated output power  
+1,15 dBu (0,88 V rms)  
+3,2 dBu (1,12 V rms)  
+4,7 dBu (1,33 V rms)  
+5,5 dBu (1,46 V rms)  
THD at rated output power  
MBW = 80kHz, 1kHz  
< 0,05%  
IMD-SMPTE, 60Hz, 7kHz  
DIM 30, 3,15kHz, 15kHz  
Maximum Input Level  
< 0,02%  
< 0,01%  
+22 dBu (9,76 V rms)  
Crosstalk  
ref. 1kHz, at rated output power  
< -80 dB  
Frequency Response  
ref. 1kHz (- 1dB)  
15Hz … 40kHz  
20 kΩ  
Input Impedance  
active balanced  
Damping Factor, 1kHz  
> 300  
Slew Rate  
25 V/µs  
30 V/µs  
35 V/µs  
35 V/µs  
Signal to Noise Ratio Amplifier  
A-weighted  
103,5 dB  
105,5 dB  
107,0 dB  
109,0 dB  
Output Noise, A-weighted  
Output Stage Topology  
Power Requirements  
< -70 dB  
Class AB  
600W *  
Class H  
Class H  
Class H  
725W  
100V, 120V, 220V, 230V, 240 V; 50Hz … 60Hz (factory configured)  
500W * 660W *  
Power Consumption 1/8 max.  
output power @ 4 ohms  
Protections  
Audio limiters, High temperature, DC, HF, Back-EMF,  
Peak current limiters, Inrush current limiters, Turn on delay  
Cooling  
Front-to rear, 3-stage fans  
+5°C ... +40°C (40°F ... 105°F)  
I
Ambient Temperature Limits  
Safety Class  
Dimensions (W x H x D) mm  
Weight  
483 x 88,1 x 386,8  
13,5 kg (30,8 lbs)  
15 kg (33 lbs)  
16 kg (35,2 lbs)  
18 kg ( 39,6 lbs)  
Optional:  
Rear-rackmount 15,5“  
Rear-rackmount 18“  
LPN + Lo-Cut internal filter-card  
D112930 (NRS 90262)  
D112933 (NRS 90264)  
D112963 (NRS 90268)  
* Measured with 110% of rated mains voltage  
Notes:  
- Depending on the ambient temperature, the unit might not operate continuously at 2Ω load in Dual Mode or 4Ω load in Bridged Mode.  
31  
 
BLOCK DIAGRAM  
32  
 
ABMESSUNGEN / DIMENSIONS  
ABMESSUNGEN / DIMENSIONS (in mm)  
33  
 
NOTES  
34  
 
NOTES  
35  
 
USA  
Telex Communications Inc., 12000 Portland Ave. South, Burnsville, MN 55337, Phone: +1 952-884-4051, FAX: +1 952-884-0043  
Germany EVI AUDIO GmbH, Hirschberger Ring 45, D 94315, Straubing, Germany Phone: 49 9421-706 0, FAX: 49 9421-706 265  
Subject to change without prior notice.  
Printed in Germany  
07/03/2006 / D 366 197  
 

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