Dynacord CL 2000, CL 1200 User Manual

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Dynacord CL 2000, CL 1200 User Manual

OWNER‘S MANUAL

LINEAR PRECISION POWER AMP

CONTENTS

IMPORTANT SAFETY INSTRUCTIONS

3

IMPORTANT SERVICE INSTRUCTIONS

3

DESCRIPTION

4

UNPACKING & WARRANTY

5

NSTALLATION NOTES

5

FRONT VIEW

6

REAR VIEW

7

NPUTA / INPUT B

7

PARALLEL

7

POWER AMP OUTPUT

8

BRIDGED MODE

8

GROUND-LIFT SWITCH

8

MAINS INPUT

8

SPECIFICATIONS

3

BLOCK DIAGRAM

32

DIMENSIONS

33

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IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions

2Keep these instructions.

3.Heed all warnings

4Follow all instructions

5.Do not use this apparatus near water.

The lightning fl ash 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 suffi cient 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

6Clean only with a dry cloth.

7.Do not “block” any ventilation openings. Install in accordance with the manufacture’s instructions 8 Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus

(including amplifi ers) that produce heat

9Do 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 fi t into your outlet, consult an electrican for replacement of the obsolete outlet.

10Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11Only use attachments/accessories specifi ed by the manufacturer

12Use only with the cart, tripod, bracket, or table specifi ed 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

13Unplug this apparatus during lightning storms or when unused for a long period of time.

14.Refer all servicing to qualifi ed service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped

15.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

16 To completely disconnect this equipment from the AC Mains, disconnect the power plug from the AC receptacle

17.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

CAUTION:

These servicing instructions are for use by qualifi ed 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 qualifi ed to do so. Refer all servicing to qualifi ed service personnel.

1Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when servicing the appliance

2Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be operated and is connected to the mains

3Switch off the power before retrofi tting any extensions, changing the mains voltage or the output voltage.

4The 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

5Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only

permissible when using original parts

6Altering the circuitry without prior consent or advice is not legitimate

7Any 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.

8All instructions concerning the handling of MOS - circuits have to be observed.

NOTE:

SAFETY COMPONENT ( MUST BE REPLACED BY ORIGINAL PART )

3

DESCRIPTION

Congratulations! With buying a DYNACORD CL-SERIES power amplifi er you have chosen an appliance 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 employing low-leakage toroidal transformers and the consistent use of Class-H technology provide extensive 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 effi ciently. 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 fulfi l 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 OUTconnector 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 mechanica damage. These particularly precise, secure to operate detent-potentiometers are located on the front panel. CL-Series power amps provide the opportunity for retrofi tting an internal analogue signa processor board with x-over and fi lter functions.

The easily readable LED display provides a quick overview of the power amp’s current operationa status. The power outputs CHANNELA, 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 amplifi er. 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 amplifi er. Next to the power amplifi er itself, the package also includes this owner’s manual, a mains cord and the warranty certifi cate. 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 continuously 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 suffi cient 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 amplifi er 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 temperature 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 amplifi er has to be protected against: dripping or splashing water, direct sunlight, high temperatures or direct infl uence 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 amplifi er’s enclosure make sure to instantly separate the appliance from the mains power and contact an authorised service centre for inspection before continuing operation.

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