Telex DN9848, DOC02 User Manual

Software Version 3.02

Telex Communications (UK) Limited,
Klark Teknik Building,
Walter Nash Road,
Kidderminster.
Worcestershire.
DY11 7HJ.
England.

Tel:[phone]
Fax:[phone]

Email: [e-mail]
Website: www.klarkteknik.com

DN9848 Loudspeaker Processor Operators Manual
DOC02-DN9848 Issue 2.0 - January 2005
(c) Telex Communications (UK) Limited.

In line with the company’s policy of continual improvement, specifications and function may be
subject to change without notice. This Operators Manual was correct at the time of writing. E&OE.

IMPORTANT SAFETY INSTRUCTIONS

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE

AVIS: RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR

These symbols are internationally accepted symbols that warn of potential hazards with
electrical products.

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. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any of the ventilation openings. Install in accordance with the
manufacturers instructions.

8. Do not install near any 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 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 electrician 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. Only use attachments / accessories specified by the manufacturer.

12. Unplug this apparatus during lightning storms or when unused for long periods of time.

13. Refer all servicing to qualified 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.

IEC-60065-Edn7-KT

Telex Communications (UK) Limited, Klark Teknik Building,

Walter Nash Road, Kidderminster. Worcs. DY11 7HJ. England.

Tel: [phone] Fax: [phone]

www.midasconsoles.com www.klarkteknik.com

DECLARATION OF CONFORMITY

We, Telex Communications (UK) Limited

of, Klark Teknik Building, Walter Nash Road, Kidderminster, Worcestershire, DY11 7HJ.

Declare that a sample of the following product:-

Product Type Number Product Description Nominal Voltage(s) Current Freq

DN9848 Loudspeaker

Processor

to which this declaration refers, is in conformity with the following directives and/or standards:-

Directive(s) Test Standard(s)

89/336/EEC Electromagnetic Compatibility Directive
amended by 92/31/EEC & 93/68/EEC 73/23/EEC,
Low Voltage Directive, amended by 93/68/EEC

115V AC
230V AC

200mA
100mA

50/60Hz

Generic Standard Using EN55103 Limits and Methods EN50081/1

Class B Conducted Emissions PAVI EN55103

Class B Radiated Emissions PAVI EN55103

Fast Transient Bursts at 2kV EN61000-4-4

Static Discharge at 4kV EN61000-4-2

Electrical Stress Test EN60204

Electrical Safety UL6500-99

CAN/CSA E60065-00

Signed: ............................ Date:1th January 2005

Name: Simon Harrison

Authority: Research and Development Director, Telex Communications (UK) Limited

Attention!

Where applicable, the attention of the specifier, purchaser, installer or user is drawn to
special limitations of use which must be observed when these products are taken into
service to maintain compliance with the above directives. Details of these special measures
and limitations to use are available on request and are available in product manuals.

Company registration No. 2414018. A Subsidiary of Telex Communications Inc.

Thank You For Using This Klark Teknik Product

Our engineers have designed this product with uncompromising dedication to providing the superb
audio performance, ease of use and rugged reliability that meets the demands of live sound
engineering.

Please take time to complete and return the Klark Teknik three-year warranty registration card and,
to obtain maximum performance with minimum effort, refer to this operators manual. Please ensure
that you read both the Important Safety Instructions and Attention! pages.

Finally, enjoy your new DN9848!

CONTENTS

ATTENTION! ......................................................................................... 1

1. INTRODUCING THE DN9848 .........................................................................3

2. FRONT PANEL ..........................................................................................4

3. REAR PANEL ............................................................................................5

4. PROGRAMMING SETTINGS ............................................................................6

4.1. The DN9848 Programming Panel ..................................................................................6

4.2. Navigating the DN9848 Menus ..................................................................................... 6

4.2.1 Input and Output Menus ....................................................................................... 6

4.2.2 Set Up Menu ....................................................................................................... 7

4.2.3 Store and Recall................................................................................................... 7

4.2.4 Home Page ......................................................................................................... 7

5. INPUT CHANNELS ......................................................................................9

5.1. Brief Technical Overview ............................................................................................. 9

5.2. Setting Input Parameters ............................................................................................ 9

5.2.1 The Input Menu ...................................................................................................9

5.2.2 Naming the Input Channel (Page 1) ........................................................................ 9

5.2.3 Gain and Delay (Page 1) ..................................................................................... 10

5.2.4 Parametric Equalisation (Pages 2 to 13) ................................................................ 10

5.2.5 Compression (Page 14) ....................................................................................... 11

5.3. Monitoring the Input Signal ....................................................................................... 11

6. OUTPUT CHANNELS ..................................................................................12

6.1. Brief Technical Overview ........................................................................................... 12

6.2. Setting Output Parameters ........................................................................................ 13

6.2.2 Naming the Output Channel (Page 1) .................................................................... 13

6.2.3 Routing (Page 2)................................................................................................ 13

6.2.4 Signal Invert, Delay and Output Level (Page 3) ...................................................... 14

6.2.5 Phase Adjustment (Pages 4 and 5) ...................................................................... 14

6.2.6 High Pass and Low Pass Filters (Pages 6 and 7) ...................................................... 15

6.2.7 Parametric Equalisation (Pages 2 to 13) ................................................................ 16

6.2.8 Compression (Page 14) ....................................................................................... 16

Output Limiter ................................................................................................... 17

6.2.9

6.3. Monitoring the Output Signal...................................................................................... 17

6.4. Output Gain and Mute - Front Panel Control ................................................................. 18

7. DN9848 SET UP OPTIONS .........................................................................19

7.1. General................................................................................................................... 19

7.2. Remote Comms Channel (Page 1)............................................................................... 19

7.3. Security Settings (Pages 2 and 3)............................................................................... 19

7.3.1 Front Panel Lock (Page 2).................................................................................... 19

7.3.2 System Protect (Page 3)...................................................................................... 20

7.4. LCD Lighting (Page 4) ............................................................................................... 21

7.5. Naming (Pages 5 and 6)............................................................................................ 21

7.6. Delay Options (Page 7) ............................................................................................. 22

7.7. Power Up Options (Page 8) ........................................................................................ 22

8. STORING AND RECALLING SETTINGS ..............................................................23

9. DN9848 REMOTE CONTROL SETUP ...............................................................25

10. APPLICATION NOTES .................................................................................27

10.1. The Advantage of DN9848 Look-Ahead Limiters ............................................................ 27

10.2. Phase-adjustment with the DN9848 ............................................................................ 29

11. TECHNICAL SPECIFICATION .........................................................................31

ATTENTION!

Please ensure that you read and follow the

IMPORTANT SAFETY INSTRUCTIONS at the front of this manual and the

SAFETY WARNINGS and INSTALLATION CONSIDERATIONS given below.

Safety Warning

To prevent shock or fire hazard, do not expose the unit to rain or moisture. To avoid electrical shock
do not remove covers. Refer servicing to qualified personnel only.

This unit is fitted with a standard fused IEC mains power socket. The unit contains a switch mode
power supply that automatically adjusts itself to 50/60Hz mains supplies in the 100 V to 240 V (+/­10%) AC range. This information is printed on the rear of the unit, below the mains inlet socket.

Before connecting this unit to the mains supply, ensure that the fuse fitted is the correct type and
rating as indicated on the rear panel.

For safety reasons the mains earth lead should never be disconnected. In the event of ground loop
problems, disconnect the signal screen at one end of the connecting cables – note that this can only
be done when the unit is used within a balanced system.

Installation Considerations

Location: Do not install this unit in a location subjected to excessive heat, dust or

mechanical vibration. Allow for adequate ventilation around the unit, making sure
the unit’s fans and vents are not obstructed. To prevent excessive heating of the
unit, avoid mounting the unit directly above power amplifiers or other devices
that radiate significant amounts of heat. Where necessary use fan cooled racks.

Cables: To ensure correct and reliable performance, this product should only be used with

high quality, screened twisted pair audio cables, terminated with metal bodied 3­pin XLR connectors (Pin 2 Hot).

Electric Fields: Should this product be used in an electromagnetic field that is amplitude

modulated by an audio frequency signal (20Hz to 20kHz), the signal to noise ratio
may be degraded. Degradation of up to 60dB at a frequency corresponding to the
modulation signal may be experienced under extreme conditions (3V/m, 90%
modulation).

After Unpacking

Please retain the original packing for use should you need to transport or ship this unit.

Please inspect the unit carefully for any signs of damage that may have occurred in transit and notify
the courier immediately if you feel that any damage has occurred.

1

DN9848 Key Features

1. INTRODUCING THE DN9848

The DN9848 is a highly configurable, digital electronic cross-over/loudspeaker management system
comprising four balanced analogue input channels and eight balanced analogue output channels. Its
unrivalled routing flexibility enables each output to be sourced from a single input, a pair of inputs, or
all four inputs.

Each input channel features:

 12 separately configurable, fully parametric equalisation stages that

may be used for room equalisation

 A programmable delay of up to 1000ms

 Gain control

 Full range compression

Each output channel features:

 Configurable high and low-pass filters for setting the cross-over characteristics

 Six stages of fully parametric equalisation that may be used to

compensate for system or enclosure characteristics

 Delay of up to 300ms on each output, mainly used for system time alignment

 Gain control and output muting

 Full range compression and full range limiting

 Dual all-pass phase correction sections, the first of which can be any of the

filter or parametric EQ stages and can be adjustable in 5 degree steps

The cross-over filter may be chosen from the following types:

 12dB/oct and 24dB/oct peaking (high-pass filter only)

 Butterworth (6, 12, 18, 24, 36 and 48dB/octave)

 Linkwitz-Riley (12 and 24dB/octave)

 Bessel (12, 18, 24, 36 and 48dB/octave)

Channel programming can be performed directly from the front panel controls or remotely using the
associated Stardraw software application or Smaart real-time analysis software (via the RS-232 PC
Port or RS-485 COMMS connectors). If required, access to critical parameter menus can be password
protected, e.g. to avoid unauthorised adjustments in hire installations.

Commonly used settings can be stored for repetitive use in up to 32 lockable System memories while
varying show settings can be stored in up to 5 User memories. Also 99 Presets can be stored in non­volatile Flash memory, including up to 25 available Factory Preset cross-over set ups for commonly
used Electro-Voice loudspeaker systems.

Klark Teknik has a policy of continuous development and may produce updates to the DN9848 host
code. These can be downloaded to the unit via the front panel PC Port. To keep up with newest
features and functions, please visit www.klarkteknik.com

.

3

Controls, Connectors, Indicators

2. FRONT PANEL

1 2 3

6

1 Input channels A-D

Menu Access

Signal Level

2 Recall button Press to access the Recall menu page from which a User,

3 Alphanumeric display Displays menu pages for viewing/defining parameter values.

7 8 9

Press to access and step through the menu pages for the

Buttons A-D

Meters A - D

respective input. The available pages depend on the current
security setting. The button is lit when active.

9-segment signal meters for monitoring signal level
(compressor headroom and gain reduction) and clip on the
respective channels.

System or Preset memory can be selected for recall.

Values are adjusted via the DATA ENTRY encoders knobs.

4

5

4 Home (Set Up) button Press to exit current menu page and return to default Home

page. Press and hold for 1 second to access Set Up menu,
then press to step through Set Up pages.

5 Output channels 1 - 8

Menu Access

Buttons 1-8

Signal Level

Meters 1 - 8

Output level and

mute control

6 Data entry encoder

knobs

7 Store button Press to access the Store menu page for storing User or

8 PC port 8-pin mini-DIN socket for connecting to an RS-232 serial

9 Power button Press to switch the unit on or off.

As for input channels.

11-segment signal meters for monitoring signal level
(compressor/limiter headroom and gain reduction) and clip
on the respective channels.

Potentiometer control for fine-tuning/muting of output level.
Zero level refers to the level set in the output menu. Turn
control to increase/decrease level or press to mute. Red ring
lights when mute is active.

Used to set parameter values on menu pages
(see Section 4.1).

System memories.

port on a PC or other remote control device. (XLR connector
is provided on the rear panel for remote control via RS-485.)

4

3. REAR PANEL

Controls, Connectors, Indicators

2 3

1 IEC fused mains

inlet socket

2 COMMS

In and Out

3 Outputs 1-8 Electronically balanced XLR audio output plugs

4 Inputs A-D Electronically balanced XLR audio input sockets

For mains power connection. Accepts input voltages from
100-240V AC 50/60Hz.

Communications input and output for remote control using
XLR cabling.

Pinouts: Pin 1 Screen
Pin 2 Hot
Pin 3 Return

Pinouts: Pin 1 Screen
Pin 2 Hot
Pin 3 Return

4 1

5