Klark Teknik DN9824 Operator's Manual

Klark Teknik Group,

Klark Teknik Building,

Walter Nash Road,

Kidderminster.

Worcestershire.

DY11 7HJ.

England.

Tel:[phone]

Fax:[phone]

Email: [e-mail]

Website: www.klarkteknik.com

OPERATORS MANUAL

DN9824

DECLARATION OF CONFORMITY

We,

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

Declare that a sample of the following product:-

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

Signed:............................

Name: David Hoare

Authority: Technical Director, Klark Teknik Group (UK) PLC

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.

Klark Teknik Group (UK) PLC

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

Tel: (44) (0) 1562 741515. Fax: (44) (0) 1562 745371

Company Registration No: 2414018

abc d abc

SIGNAL PROCESSING BY DEFINITI ON BETTERBYDESIGN DESIGNEDFOR APUREPERFORMANCE

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

DN9824 115V AC 50/60Hz

230V AC

260mA

130mA

Directive(s) Test Standard(s)

Date: 1st July, 2000

A Subsidiary of Telex communications, Inc.

EN 55014/4 1993
EN 55022/4 1987

89/336/EEC & 92/31/EEC

{

73/23/EEC EN 60065-93

Thank you for using this Klark Teknik product
After you have unpacked the unit
Introduction
Important Notes
Front panel and controls
Rear panel connections
Operation:

Play mode (normal operation) &
Store Mode
Options mode, LCD contrast, Edit ,
VU meter, Lock mode
MIDI channel settings, send edited parameters
RS-2332 to MIDI

Description of function blocks and parameters

Access to function blocks

Master EQ1-7
Master delay, Routing and output label
Output channel EQ1-6
HiPass X-Over
LoPass X-Over
Channel delay
Compressor, Limiter

Level
DN9824
Technical specifications

Edit mode

Signal flow diagram

Page 1
Page 2
Page 3
Page 4
Page 5
Page 7

Page 8
Page 9

Page 10

Page 11

Page 12
Page 14
Page 15
Page 16
Page 18
Page 19
Page 20
Page 21
Page 22
Page 23
Page 25

Contents

1

Thank You For Using This Klark Teknik Product

Precautions

Voltage Selection and Power Connection

Safety Warning

Attention!

Do not install this unit in a location subjected to excessive heat, dust or mechanical vibration.

Connection is made by means of an IEC standard power socket. Refer to the Technical Spec for the
voltage range required for satisfactory operation of the unit.

Before connecting this unit to the mains supply, ensure the fuse fitted is the correct type and rating
as indicated in the Technical Spec..

This unit is fitted with a standard fused IEC mains inlet: For safety reasons the earth lead should
never be disconnected.

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.

To obtain maximumperformance from this precision electronic product, please studythese instructions
carefully. Installation and operating the DN9824 is not complicated, but the flexibility provided by its
operating features merits familiarisation with its controls and connections. This unit has been prepared
to comply with the power supply requirements that exist in your location.

Cables:

Electric Fields:

This product should only be used with high quality, screened twisted pair audio cables, terminated
with metal bodied 3-pin XLR connectors. Any other cable type or configuration for the audio
signals may result in degraded performance due to electromagnetic interference.

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 You Have Unpacked The Unit

L abc

This

Side Up

2

Save all the packing materials - they will prove valuable should it become necessary to transport or
ship this product.

Please inspect this unit carefully for any signs of damage incurred during transportation. It has
undergone stringent quality control inspection and tests prior to packing and left the factory in
perfect condition.

If, however, the unit shows any signs of damage, notify the transportation company without delay.
Only you, the consignee, may institute a claim against the carrier for damage during transportation.

If necessary, contact your supplier or as a last resort, your Klark Teknik importing agent, who will
fully co-operate under such circumstances.

3

Introduction

The DN9824 is speaker processor that provides 2 inputs and 4 outputs, plus internal summing of the
inputsA and B. Via a matrix, it is possible to assign any output to any input or to the sum of the inputs. It
is further possible to establish the following configurations: Stereo or Dual 2-way systems, 3-way +
Direct and 4-way systems, each with MonoSub-channel, and also fullrange systems.

Providing 48-bit filter algorithms, 24-bit AD/DA conversion and a dynamic range of 115dB, the
DN9824 sets new standards for digital loudspeaker controllers and processors. The AD section uses 64
times oversampling, gain-ranging Sigma-Delta converters. The DA section uses 128 times
oversampling Sigma-Delta converters. The overall signal processing is performed by two 24-bit
Motorola DSP56007 signal processors.

Each input incorporates a 7-band equalizer, allowing the user to assign high and low-cut, high and low­shelving or parametric peak-dip filters to each of the individual filter sections. Master delays are
located in each of the input channels,which can be adjustedto affect INA, INBand INA+B.

High-pass and low-pass filters are provided for the frequency crossover functions in all operation
modes. The selection includes Linkwitz-Riley, Butterworth and Bessel type filters with switchable
slopes (slopes are dependant on filter type) between 12, 18 and 24dB/oct. Also available are 6dB/
octave and 12dB/octave peaking filters.

Six additional EQ filters are included in each output channel. Each can be set by the user to function as
high-pass or low-pass, high or low-shelving, parametric peak-dip or all-pass filters. Each channel
additionally provides a delay, a polarity switch, a programmable level control and a digital
compressor/limiter with adjustable threshold, attack and release.

A total number of 70 memory addresses, (50 preset and 20 freely assignable user programs), are
available.

Additional features are:

- FLASH memory for software and preset updatesvia serial interfaces.

- PC-based operation and configuration software running underWindows'95 / Windows '98

- Standard MIDI-interface

- RS-232 interface

- Back-lit graphic-display with 122 x 32 pixels

- Inputs and outputs are electronically balanced, XLR-typeconnectors

- Transformer-balancingfor the inputs isoptionally available

- Input/Output level controls, Output Mute switch, and channel function indicators SUB, LO,
MID and HI

- Input/Output level meters, limiter and clipping LEDs

Within this owner's manual, many of the DN9824's extensive features are explained in detail. For a
complete understanding of its operation, please take the time to carefully read the manual. Keep the
manual stored at a safe place tohave it at handfor any furtherreference.

4

Important Notes

Installation

Cables

Protection

Refer to the Technical Spec for supplyvoltage range and fuserating.

To prevent any trouble or problems occurring from high temperatures inside the appliance, it is
advisable not to use the DN9824 in environments where the ambient temperature exceeds 40°C. It is
also important to provide sufficientair-flow around the unit.

It is not recommended to install or operate the DN9824 directly above or below any device that
generates a large magnetic field; e.g. power amplifiers.

For best results, the unit should be operated using balanced inputs and outputs. In this configuration,
the non-inverting conductor (+) of the cable needs to be assigned to pin 2 of the XLR type connector,
while the inverting conductor (-) is assigned to the connector's pin 3. The shielding has to be connected
to pin 1. If the input channels have transformers for galvanic isolation, the cable screen should not be
connected to the ground plain of thetransmitting device.

It is also possible to operate the appliance in unbalanced input/output configuration. In this
configuration , the cable's "HOT" conductor must be connected to pin 2 and the screen to pin 1 of the
XLR connector. To prevent a 6dB level attenuation, the user must short-circuit pins 1 and 3 of the XLR
connector. On the other hand, if this measure leads to interference noise, removal this connection is
recommended.

Note - To prevent loss of higher frequencies, it is recommended that audio cables should not exceed
10m.

CAUTION: TOREDUCE RISKOF ELECTRICALSHOCK OR FIRE, DO NOTREMOVE COVER.
NO USER SERVICEABLEPARTS INSIDE.

DO NOTEXPOSE THIS EQUIPMENT TORAIN OR MOISTURE.

REFER SERVICINGTO QUALIFIED SERVICE PERSONNEL.

WARNING:THIS EQUIPMENT MUST BE EARTHED.

If the unit is subjected to extreme fluctuations of temperature, e.g. from being transported from outside
into a heated room, condensation may form. The unit should not be switched on until it has reached
room temperature.

5

Input level trim INA / IN B

Input Level meters

Graphic display

EDIT key

SELECT key

Rotary controls set the input levels of the inputs A and B. The input signal can be
amplified by up to 6dB (input level control set fully clockwise) or attenuated to -

(input level control set fully anti-clockwise). Set the level as high as possible, without
clipping, to achieve the highest possible Signalto Noise ratio.

The level meters are for the user to monitor the input signal levels. They individually
indicate the corresponding peak value of each input signal. The input level control
should be set to a position such that themeters indicatea level between -6dB and -12dB.
To prevent internal clipping, ensure that the clip LED'sare not lit. Three differentmeter
indication modes can be selected inthe OPTIONS menu, "Normal fast", "Peak Hold"or
"Slow Decay".

In the PLAY mode (normal operation), the 32 x 122 pixel LCD shows the number and
name of the program and the current active configuration. In EDIT mode, the display
shows individual function blocks including their corresponding parameters and
parameter values. Additionally, and depending on the chosen mode, the display also
indicates option menus, status messages, etc..

This key allows the user to enter the EDIT mode. While in PLAY mode, press the EDIT
key, the last modified parameter of the active program is displayed. Using the SELECT
( or ) keys gives the user the facility to select (highlight) the next or previous
parameter in the displayed function block. The value of the highlighted parameter can
be altered by using the rotary PARAMETER encoder.

While in PLAY mode, press ENTER, then pressing the SELECT key will select the
next program in the program list. While in EDIT mode, pressing the SELECT key
selects the next parameter within the displayed function block. While in OPTIONS
mode, pressing the SELECT key will allow the user to scroll forward through the
user options.

¥

34

4

4

4

4

3

3

3

3

SELECT key

OPTION key

STORE key

While in PLAY mode, press ENTER, then pressing the SELECT key will select the
previous program in the program list. While in EDIT mode, pressing the SELECT
key selects the previous parameter within the displayed function block. While in
OPTIONS mode, pressing the SELECT key will allow the user to scroll backwards
through the user options

The OPTION key isused to enterthe OPTION menu, allowing theuser to viewand alter
product related settings. For further details, please refer to the chapter called
"OPTIONS mode".

This key allows theuser to storeedited programs in one ofthe program presets(No. U01
U20) or to copy programs from one preset to another. For further details, please refer to
the chapter called "STORE mode".

Front panel and controls

6

ENTER key

Rotary PARAMETER encoder

OUTPUT level control potentiometers

Output MUTE keys

Channel function indicators SUB, LO, MID, HI

OUTPUT Level meterindicators

OUTPUT Limiter indicators

OUTPUT CLIP indication

POWER-ON switch

The ENTER key allows the user to recall a program. For further details, please refer to the chapter
called "Operation".

Press the ENTER key, and rotating the PARAMETER encoder selects a program. Press ENTER again
to activate the desired program. In EDIT mode, the encoder is used to alter parameter values or scroll
through function blocks. For furtherdetails, please refer tothe chapter called"Operation".

These rotary controls are used to set the levels of output channels, allowing the user to match the
DN9824 to the input levels of the following chained devices. Correctly setting these controls results in
an improved Signal to Noise ratio. In most cases, good results are achieved when setting the controls to
their center detented position (-6dB). The digital output gain control (accessed in each output menu)
should be used only when higher output levels are needed. It is not recommended to use the digital
output gain control for large attenuation, since this would reduce the dynamic range of the D/A
converters.

These rotary controls also provide push key functionality, which, in the EDIT mode, allow the user to
switch between the same function block indifferent output channels.

These keys allow the user to mute the output signal of the corresponding output. Pressing a key once
switches the mute function ON, and the key's red LED lights. Pressing the key again switches the mute
function OFF and the key's LED isswitched off.

These LED's indicate which frequency band each channel is set to. If a channel is configured for full
range operation, all of its' function LED'sare lit simultaneously.

These meters indicate the peak level of the corresponding output. The DN9824 should be operated at a
level such that the clip LED's arenot lit,as this could indicate internal clipping. The meterresponse can
be set to "Peak-Hold", "Normal fast" or"Slow Decay" using theOPTIONS menu.

The LIMIT LED's light when the compressor/limiter of the corresponding channel is activated; e.g.
when the audio signal level exceeded the previously set threshold and, therefore, the output level is
compressed or limited.

The CLIPindicator lights when the signal exceeds theoutput signal range.

This switch turns the DN9824's mains power ON and OFF. The KT logo above the switch will
illuminate when power is switched on.

7

Rear Panel Connections

Mains connector

Standard IEC mainsinlet connector. See Technical Specification forfuse rating.

RS-232 interface

This interface allows connection to a PC to upload new host code and to provide a
means of editing the DN9824 functions andparameters remotely.

MIDI IN / THRU /OUT connectors

These sockets allow the user to control several DN9824 units via a single master unit.
Exchanging memory contents in both directions is possible as well. Controlling the
DN9824 is also possible from a computer's desktop, providing that a standard MIDI
interface has been installed in the userPC / Notebook.

OUT connectors

These are the electronically balanced outputs ofthe DN9824.

The individual configuration of the output channels is displayed through the "channel
function indicators" on the front panel.

NOTE:- Before powering the unit, please ensure that power amplifiers and/or loudspeaker systems
are always connectedto the correctoutput channel.

IN connectors

These are the 2 electronically balanced inputs of the DN9824. Each of the inputs also
has a Direct Out connector which allows the user to feed the input signal to any other
device that needs to be operated withthe unaltered source signal.

Atransformer option is available.

8

Operation

PLAYmode (normal operation)

At power on, the unit enters PLAY mode. The display shows the number and name of the last user
program to be used

To recall a program memory, press the ENTER key and step through the available program memories
using the SELECT ( or ) keys or the rotary PARAMETER encoder. At the selected memory, press
the ENTER key again. The user will be asked to confirm whether this is the required program. If so,
press ENTER key again to confirm.

Press the ENTER key to confirm and

recall the new program.

Recalling a factory preset (program memories F01 to F50) provides the easiest method of achieving
good results with the DN9824. Factory preset programs are carefully designed, and are stored,
internally, in non-volatile FLASH memory. The required loudspeaker combination can be selected
from the list of factory presets and the DN9824 will automatically set the optimum parameters for the
chosen components. To apply changes to a factory preset, it first has to be copied to a user-definable
preset location (U01 to U 20) and the name changed to make it unique (For further information refer to
chapter called STORE mode).

Possible configurations for the DN9824 are:-

- Stereo 2-way. The parameters of the inputs A and B and the Low and High outputs are
simultaneously set to identical values.

- Dual 2-way. Input and output parameters can be setseparately from each other.

- Mono 3-way with Direct Out (3-Way Sub + 1). The sub channel, as well as the Direct
Out, can be assigned to IN A, IN B or to the summed, monaural signal of the two input
channels.

- Mono 4-way. The sub channel can be assigned to IN A, IN B or to the summed,
monaural signal of the two input channels.

- Full range. All outputs can be freely assigned to IN A, IN B or to a summed, monaural
signal of the two input channels.

3 4

NOTE: If the new program is a different configuration to the

last, the user will be asked to confirm change of configuration.

EDIT mode

Enter EDITmode by pressing theEDIT key. To exit theEDIT mode, press EDITagain.

When in EDITmode, use the SELECT ( or ) keys to highlight (light text onblack background)the
function block title at the top of the display. Use the rotary PARAMETER encoder to scroll through
function blocks until the desired function block is selected for editing. Use the SELECT ( or )
keys to highlight the parameter for editing and then use the rotary PARAMETER encoder to change the
value/text of that parameter. When a parameter has been changed, a flashing "E" appears in the top
right corner of the LCD, informing the user that the selected program is being edited but has not been
saved.

The user now has differentoptions to continue:-

- To store the edited program, see STORE mode. When stored, the flashing "E" will
disappear.

- To continue altering theparameter values, continueas above.

- To return to the original (unedited) program, press ENTER and enter the program recall
process. This cancels the EDITfunction and discards the parametervalue changes of the
selected program.

34

34

! CAUTION ! These alterations have not yet been stored and will be lost with the next

program change command.

9

When in EDITmode, pressing an output level controlpot will enable the user to quickly getto an output
function block for thatparticular output, which canthen be edited. Pressing anotheroutput pot will take
the user to the same function blockbut in the newoutput channel.

The user is able to access and edit all parameters in the user memories U01 to U20. The user can copy
factory presets (F01 to F 50) to user-definable presets (U01 to U20) and then edit them. All parameters
and their individual setting ranges and effects are described in the section headed "Description of
Function Blocks and Parameters".

To save an editedprogram, or tocopy a program from onelocation to another.

Select a preset to be edited andstored.

Press the STORE key toenter STORE mode fromany other mode.

The display now shows the user destination memory number (U01 to U20), its' current name and the
name for the new memory location. Use the rotary PARAMETER encoder to select the destination
memory number.

When the destination memory number has been selected, press SELECT to access and edit the first
letter of the new title. Rotate the rotary PARAMETER encoderto scroll throughASCII characters until
the required character is displayed. Press SELECT to move along to the next available space (and
SELECT to scroll back through the name). A name of up to sixteen ASCII characters can be
displayed and stored. NOTE, up to this point, the STORE process can be cancelled by pressing the
EDIT or OPTIONkeys.

Press the STORE key toinitiate the store.

Press the STORE key again to confirm the store and exit the store mode. The "PROGRAM
STORED…." message willbe displayed.

Afterwards, the unit enters the PLAYmode and itis ready for operation.

STORE mode

4

4

3

!CAUTION! This procedure overwrites the program that was previously saved under this preset
number. Its contents will be erased and all data will be lost! Therefore, ensure that the selected
destination program number is correct.

10

OPTIONS mode

LCD contrast

EDIT mode

No Edit

Full Edit

dB from Clip

dBu

Volts

VU metermode

normal fast

peak hold

slow decay

LOCK code

Temperature units

Celsius Fahrenheit

Press the OPTION key to select the OPTIONS menu. The last used option program will appear on the
display. Press SELECT ( or ) keys to scroll through the options. Use the rotary PARAMETER
encoder to adjust each option value/function. The user can leave the OPTION mode by pressing the
OPTION key again, or the user can press any other MODE key (i. e. pressing the EDIT key switch to
Edit mode).

The LCD contrast or viewing angle canbe set in arange of -10(angle down) and +10 (angle up).

By selecting , the EDIT, SELECT( or ), STORE and ENTER keys are inoperative
(unless in OPTION menu), but remote programchange is possible.

By selecting , all function blocks and parameter settingare accessible.

This function allows setting the measurement unitsof the compressor threshold.

. Threshold setting in dB relative to full modulation. (0dB = full

modulation).

. The thresholdvalue is displayedin dBu (0dBu = 0.775V).

. The thresholdvalue is displayedin volts.

. The peak hold function is off; the levels are displayed with a fast decay

rate of approximately 600dB/s.

. The peakhold function ison for a more convenient level setting.

. With this setting, levels are displayed with a longer decay rate of

approximately 60dB/s, i. e. with lower signallevels the meters dropmore slowly.

A four digit code which is factory set to 0000. After power on, this display defaults to 0000.
Rotate the rotary PARAMETER encoder to select a lock code value. When this code has been
set (after exit from the OPTION menu), the unit is locked and none of the front panel controls or
parameters can be accessed and adjusted. However, remote programme changeis possible.

To unlock, press OPTION key, scroll through the options until LOCK CODE is displayed,
rotate the rotary PARAMETER encoder until the lock code is displayed and then press the
STORE key.

These are the units for the environmentaltemperature. Options are or .

3

3

4

4

! CAUTION ! Do not forget yourcode number. If the code number is lost, the unitcan only be
unlocked aftercontacting your local KlarkTeknik distributor.

COMPRESSOR and Limiter threshold units

11

Midi channel settings Rx andTx

OFF

OMNI

1to16

Send edited parameters

off To MIDI To RS-232

RS-232 to MIDI

On Off

Software revision

The DN9824 will transmit and receive MIDI program change messages on a specified channel.
Here, the user is able to set the MIDI channel for the unit to send and receive MIDI data. The
selected channel also transmits the MIDI SystemExclusive messages (SysEx).

The following settings can be selected.

- The DN9824does not reactto MIDI data. No MIDIdata is sent andSysEx is off.

- The DN9824 receives MIDI data from all 16 MIDI channels (OMNI MODE).

MIDI data is sent via channel 1.

- The DN9824 sends and receives MIDI and SysEx data only via the selected

MIDI channel (1 to 16).

Options are , and

During editing and program changes, the DN9824 is capable of transmitting parameters, in 'real
time', via the serial port(s). At program change, a complete parameter dump can be sent out.
The option menu allows the user to program whether data is being transmitted, and, if so, which
interface is to be used.

Options or

This function provides the facility to pass data that is received at the RS-232 port directly onto
the MIDI OUT port. This effectively creates a "RS-232 to MIDI bridge". In this way, the user
can control more DN9824 units from aPC.

It allows transfer of all user programs and system data of the unit via MIDI. Therefore, the
MIDI OUT of the unit has to be connected to the MIDI IN of a unit that is capable of receiving
MIDI data (e.g. another DN9824, a computer, etc..). NOTE, please make sure that both units
are on the same MIDI channel.

This option shows the revision of theDN9824 host software. E.g. SOFTWARE REV: 1.00

Klark Teknik ID (hex):00 20 1E
DN9824 device ID (hex):48

RECALL

STORE

12

Description of Function Blocks and Parameters

The following pages provide the user with descriptions of all function blocks that can appear in any
selected mode, including all available parameters, valueranges and default settings.

In EDIT mode, the input/channel identification is indicatedin thetop leftcorner of the display while the
function block name (MASTER EQ, MASTER DELAY, CHANNEL EQ, ROUTING, etc…) is shown
next to it.

The corresponding parameters for each function blockappear in the secondand third lineof the display.

The system function blocks are accessedusing the rotary PARAMETER encoder inthe following menu
sequence:-

INA:MASTER EQ1
INA:MASTER EQ2
INA:MASTER EQ3
INA:MASTER EQ4
INA:MASTER EQ5
INA:MASTER EQ6
INA:MASTER EQ7
INA:MASTER DELAY

IN B:MASTER EQ1
IN B:MASTER EQ2
IN B:MASTER EQ3
IN B:MASTER EQ4
IN B:MASTER EQ5
IN B:MASTER EQ6
IN B:MASTER EQ7
IN B:MASTER DELAY

INA+B:MASTER DELAY

OUT1:ROUTING
OUT1:CHANNELEQ1
OUT1:CHANNELEQ2
OUT1:CHANNELEQ3
OUT1:CHANNELEQ4
OUT1:CHANNELEQ5
OUT1:CHANNELEQ6
OUT1:HIPASS XOVER
OUT1:LOPASS XOVER
OUT1:CHANNELDELAY
OUT1:COMPRESSOR
OUT1:LIMITER
OUT1:LEVEL

Access to function blocks

13

OUT2:ROUTING
OUT2:CHANNELEQ1
OUT2:CHANNELEQ2
OUT2:CHANNELEQ3
OUT2:CHANNELEQ4
OUT2:CHANNELEQ5
OUT2:CHANNELEQ6
OUT2:HIPASS XOVER
OUT2:LOPASS XOVER
OUT2:CHANNELDELAY
OUT2:COMPRESSOR
OUT2:LIMITER
OUT2:LEVEL

OUT3:ROUTING
OUT3:CHANNELEQ1
OUT3:CHANNELEQ2
OUT3:CHANNELEQ3
OUT3:CHANNELEQ4
OUT3:CHANNELEQ5
OUT3:CHANNELEQ6
OUT3:HIPASS XOVER
OUT3:LOPASS XOVER
OUT3:CHANNELDELAY
OUT3:COMPRESSOR
OUT3:LIMITER
OUT3:LEVEL

OUT4:ROUTING
OUT4:CHANNELEQ1
OUT4:CHANNELEQ2
OUT4:CHANNELEQ3
OUT4:CHANNELEQ4
OUT4:CHANNELEQ5
OUT4:CHANNELEQ6
OUT4:HIPASS XOVER
OUT4:LOPASS XOVER
OUT4:CHANNELDELAY
OUT4:COMPRESSOR
OUT4:LIMITER
OUT4:LEVEL

The following provides the user with a description of all function blocks that can appear in the EDIT
mode. The listincludes all availableparameters, value ranges, and settings.

Master EQ1-7

Type

Freq

Q

Gain

Slope

Each input channel of the DN 9824 has 7 bands of parametric EQ. Each band can be set up to be one of
the following EQ function blocks.

describes the selected filter type. When selecting BYPASS, no equalisation effect is applied to
the signal. PEQ provides a parametric Peak/Dip Filter with programmable frequency, Q and gain.
LOSLV/HISLV are Low Shelving or High Shelving equalizers respectively. Their parameters are
frequency, slope, and gain. The parameters of the LOPASS/HIPASS filters are frequency and slope (Q
is only available with 12dB slope).

sets the center frequency of parametric EQ's and the cutoff frequency of LOSLV/HISLV and
LOPASS/HIPASS filters.

The value of the parameter determines the quality or bandwidth of parametric EQs. Higher Q values
result in a narrow banded filter while smaller Q values result in an increased bandwidth. The Q
parameter also describes the quality and, therefore,the graph of LOPASS/HIPASSfilters.

sets the degree of amplification or attenuation of the parametric EQ or the low shelving and
high shelving equalizers. The stepwidth is 1 dB.

The parameter describes the steepness, or order, of the filter for the LOSLV/HISLV and
LOPASS/HIPASS equalizers.

Function Block Settings/Value Range Default

HISLV Freq 20Hz to 20kHz 1.00kHz

Slope 6dB,12dB 6dB

Gain -12dB to +12dB 0.0dB

(+6dB max with slope 12dB)

HIPASS Freq 20Hz to 20kHz 1.00kHz

Slope 6dB,12dB 6dB
Q 0.4 to 2.0 0.7

(Q only withslope 12dB)

LOPASS Freq 20Hz to 20kHz 1.00kHz

Slope 6dB,12dB 6dB
Q 0.4 to 2.0 0.7

(Q only withslope 12dB)

PEQ Freq 20Hz to 20kHz 1.00kHz

Q 0.4 to 20.0 0.7
Gain -12dB to +12dB 0.0dB

LOSLV Freq 20Hz to 20kHz 1.00kHz

Slope 6dB,12dB 6dB
Gain -12dB to +12dB 0.0dB

Type & Parameter BYPASS, PEQ, LOSLV, HISLV, BYPASS

HIPASS, LOPAS

14

Master Delay

Delay

Unit

Tem p

Routing and Output Label

Label

The master delays are located in theinputs INA, IN B and in the summedinput signal IN A+B.

The delay times are displayed in milliseconds and microseconds while the equivalent distances are
displayed in feet, inches, meters or centimeters. The environmental temperature appears as an
additional parameter whenever distances are displayed. Thus, up to three parametersare available.

The parameter determinesthe delay time of the corresponding input channel.

allows the user to select between time or distance display. Distances are automatically converted
into delay times plus the calculation additionally includes the influence of the environmental
temperature.

allows the user to enter a value for the environmental temperature. This parameter appears only
when the selected display unit is distance. The effect of the environmental temperature on the resulting
delay time is automatically included in thecalculation.

Any combination of input signals (IN A, IN B or IN A+B) can be routed to each of the outputs of the
DN9824.

sets the channel function indicators on thefront panel of theunit.

Temp -20°C to + 60°C +20°C

Unit ms, µs, feet, inch, m, cm ms

Parameter Settings /Value range Default

Delay

1.9 ms - 900 ms
1917 µs - 900,000 µs
2 feet - 1013 feet (@ 20°C)
26 inch - 12161 inch (@ 20°C)

0.7 m - 309 m (@ 20°C)
66 cm - 30890 cm (@ 20°C)

1.9 ms

(only effective when
distance is selected)

15

INAorINB

Source

INA, IN B, INA+B

Label

OFF, SUB, LO, MID, HI, SUB-LO,
LO-MID, MID-HI,LO-MID-HI,
SUB-LO-MID-HI

Depends on
preset
configuration

Parameter Settings / Value range Default

Output Channel EQ1-6

Type

Freq

Each of the fouroutput channels of the DN9824 has 6 bands ofparametric EQ, each of whichallows the
user to program additional equalization for theindividual channels.

describes the selected filter type.When selecting BYPASS, no equalisation effect is applied to the
signal. PEQ provides a parametric peak/dip filter with programmable frequency, Q, and gain.
LOSLV/HISLV are Low Shelving and High Shelving Equalizer respectively. Their parameters are:
frequency, slope, and gain. The parameters of the LOPASS/HIPASS filters are frequency, slope and Q
(Q only available with 12 dB slope). TheALLPASS filter can be used to compensate phase differences
at the x-over frequency.

sets the center frequency of parametric EQ's and the cutoff frequency of LOSLV/HISLV and
LOPASS/HIPASS filters. With theALLPASS filter this is the frequency at which the phase is shifted by
90° (1 orderALLPASS)or by 180° (2 order ALLPASS).

st nd

The value of the parameter determines the quality or bandwidth of parametric EQ's. Higher Q values
result in a narrow banded filter while smaller Q values result in an increased bandwidth. The Q­parameter also describes the quality and, therefore, the shape of the graph of the LOPASS/HIPASS
filters. The Q parameter is also found in the 2 order ALLPASS filter. It is used to set the phase
response in the transition band (lower Q settings result in flat phase response while higher Q settings
produce a steeper phase response).

sets the degree of amplification or attenuation of the parametric EQ or the LOSLV/HISLV

equalizers. The stepwidthis 1 dB.

The parameter describes the steepness, or order, of the filter for LOSLV/HISLV and
LOPASS/HIPASS equalizers.

Q

Gain

Slope

nd

ALLPASS Freq 20Hz to 20kHz 1.00 kHz

Order 1st, 2nd 1st
Q 0.4 to 2.0 0.7

(Q only with2nd Order)

HISLV Freq 20Hz to 20kHz 1.00 kHz

Slope 6dB, 12dB 6dB
Gain -12dBto + 12dB 0.0 dB

(+6 dB max,with slope 12dB)

HIPASS Freq 20Hz to 20kHz 1.00 kHz

Slope 6dB, 12dB 6dB
Q 0.4 to 2.0 0.7

(Q only withslope 12dB)

LOPASS Freq 20Hz to 20kHz 1.00 kHz

Slope 6dB, 12dB 6dB
Q 0.4 to 2.0 0.7

(Q only withslope 12dB)

PEQ Freq 20Hz to 20kHz 1.00 kHz

Q 0.4 to 20.0 0.7
Gain -12dB to +12dB 0.0dB

LOSLV Freq 20Hz to 20kHz 1.00 kHz

Slope 6dB, 12dB 6dB
Gain -12dB to +12dB 0.0 dB

Type & Parameter BYPASS, PEQ, LOSLV, HISLV, BYPASS

HIPASS, LOPASS, ALLPASS

Function Block Settings /Value Range Default

16

The parameter determines whether a first order or second order ALLPASS filter is selected. A
first orderALLPASS filter shifts the phase by 180° and, at the cutoff frequency, by 90°. A second order
ALLPASS filter shifts phaseby 360° and, at the cutoff frequency, by 180°. Additionally, a second order
ALLPASS filter includes Q which determines the slope of the phase change at the cutoff frequency.
High Q gives a steeper slope thanlow Q.

Order

17

HiPass X-Over

Type

Freq

Pol

The frequency crossover filter consists of a High pass filter in one channel and a Low pass filter in the
adjacent channel. In this filter block, thefrequency x-over filter's Hi-Passparameters are set.

The parameter defines the filter characteristics of the Hi-Pass x-over filter. Different slopes and
filter responses (Bessel, Butterworth, Linkwitz-Riley) are available and the filter can be bypassed
(thru). The correspondingLo-Pass x-over filtershould be set to thesame characteristics.

sets the Hi-Pass x-over filter's cutoff frequency. The corresponding Lo-Pass x-over filter should

be set to the same cutoff frequency.

sets the polarity of the filter.

Parameter Settings / Value range Default

Type

Thru,
6dB
12dB (with Q = 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.5,

2.0)
Bessel 12dB, Butterworth12dB, Linkwitz 12dB,
Bessel 18dB, Butterworth18dB,
Bessel 24dB, Butterworth24dB, Linkwitz 24dB

thru

Freq

2Hz to 20kHz

1.00kHz

Pol

Norm, inv

Norm

18

LoPass X-Over

Type

Freq

Pol

The frequency crossover filter consists of a low pass filter in one channel and a high pass filter in the
adjacent channel. In thisfilter block, the frequencyx-over filter's Lo-Pass parametersare set.

The parameter defines the filter characteristics of the Lo-Pass x-over filter. Different slopes and
filter responses (Bessel, Butterworth, Linkwitz-Riley) are available and the filter can be bypassed
(thru). The correspondingHi-Pass x-over filtershould be set to thesame characteristics.

sets the Lo-Pass x-over filter's cutoff frequency. The corresponding Hi-Pass filter should be set to

the same cutoff frequency.

sets the polarity of the filter

19

Parameter Settings / Value range Default

Type

Thru,
6dB
12dB (with Q = 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.2, 1.5,

2.0)
Bessel 12dB, Butterworth12dB, Linkwitz 12dB,
Bessel 18dB, Butterworth18dB,
Bessel 24dB, Butterworth24dB, Linkwitz 24dB

thru

Freq

20 Hz to 20 kHz

1.00kHz

Pol

Norm, inv

Norm

Channel Delay

Delay

Unit

Tem p

Achannel delay is providedin each ofthe output channels.

The delay time or acoustical distance is displayed in milliseconds, microseconds, feet, inches, meters,
or centimeters. The environmental temperature appearsas additional parameter whenever distances are
displayed. Thus, upto three parametersare available.

The parameter determines the delay time of the corresponding channel or the distance between
different loudspeaker clusters.

allows the user to select between time or distance display. Distances are automatically converted
into delay times plus the calculation additionally includes the influence of the environmental
temperature.

allows the user to enter a value for the environmental temperature. This parameter appears only
when the selected display unit is distance. The effect of the environmental temperature on the resulting
delay time is automatically included in thecalculation.

Temp -20°C to + 60°C +20°C

Unit ms, µs, feet, inch, m, cm ms

Parameter Settings /Value range Default

Delay

0 ms - 900 ms
0 µs - 900,000 µs
0 feet - 1013 feet (@ 20°C)
0 inch - 12161 inch (@ 20°C)
0 m - 309 m (@ 20°C)
0 cm - 30890 cm (@ 20°C)

0.0 ms

(only effective when

distance is selected)

20

Compressor

Limiter

The compressor automatically reduces level peaks above a certain threshold and, therefore, provides
reliable protection against excessive signals causing problemsin subsequent units inthe signal path.

The limiter provides additional protection against the occurrence of clipping and overload conditions.
The maximum level of the audio signalis limited to theset threshold value.

Parameter Settings / Value range Default

Thrsh -9dBu to +21dBu +21dBu

Rls 50 ms to 999 ms 100 ms

0.27V to 8.7V

-30dB to 0dB

21

Parameter Settings / Value range Default

Thrsh -9dBu to +21dBu 8.7V

Rat 1/1.0, 1/1.4, 1/ 2.0, 1/4.0, 1/8.0 1/ 2.0

Attack 0 to 99 ms 5 ms

Rls 50 ms to 999 ms 50 ms

0.27V to 8.7V

-30dB to 0dB

+21dBu
(Bypassed)

100 ms

(Bypassed)

LEVEL

Level

Polarity

Each output channel has a digital levelcontrol and a polarityswitch.

The parameter sets the output level of the corresponding output channel and can be adjusted in
steps of 0.5dB.

defines the individual polarity of the audio signals of each output. Depending on the
characteristic of the frequency crossover filter, inverting the polarity of a channel's signal may become
necessary. The following table provides the user with a list of filter types for which a channel's signal
should be inverted for the corresponding filterpair.

Bessel 12dB
Butterworth 12dB
Bessel 18dB
Bessel 24dB

Polarity Normal, Inverted Normal

Level Off, -30dB to +6dB 0.0dB

Parameter Settings /Value range Default

22

DN9824 Signal Flow Diagram

Allpass

Parametric EQ

Lo / Hi Pass

Parametric EQ

Lo / Hi Pass

IN B

INPUT

MASTER EQs

MASTER DELAYB

INPUT LEVEL

ADC

X-OVER 4

MASTER DELAYA+B

+

R

O

U

T

I

N

G

CHANNEL EQs

POLARITY

LEVEL

COMP / LIMITER

OUTPUT LEVEL

DAC

D

A

OUTPUT

OUT 4

OUT 3

OUT 2

OUT 1

Lo / Hi Shelving

7 Bands

LR 12,24

BS 12,18,24

BW 12,18,24

DLY

DLY

A

D

METER

FILTER

FILTER

X-OVER

PHASE

VOL.

LIMITER

METER

DLY

CHANNEL DELAY

X-OVER 3

CHANNEL EQs

POLARITY

LEVEL

COMP / LIMITER

OUTPUT LEVEL

DAC

D

A

OUTPUT

FILTER

X-OVER

PHASE

VOL.

LIMITER

METER

DLY

CHANNEL DELAY

X-OVER 1

CHANNEL EQs

POLARITY

LEVEL

COMP / LIMITER

OUTPUT LEVEL

DAC

D

A

OUTPUT

FILTER

X-OVER

PHASE

VOL.

LIMITER

METER

DLY

CHANNEL DELAY

X-OVER 2

CHANNEL EQs

POLARITY

LEVEL

COMP / LIMITER

OUTPUT LEVEL

DAC

D

A

OUTPUT

FILTER

X-OVER

PHASE

VOL.

LIMITER

METER

DLY

CHANNEL DELAY

IN A

INPUT

MASTER EQs

MASTER DELAYA

INPUT LEVEL

ADC

DLY

A

D

METER

FILTER

Lo / Hi Shelving

6 Bands

23

24

Technical Specifications

Mains voltage 90to 250VAC @50 - 60 Hz
Fuse rating TO.8AL250V
Power consumption 20 watts
Safety class I

Inputs 2 x XLR IN electronicallybalanced

(transformer option available)

2 x XLR OUT (DirectOut)
Input voltage (nominal) 1.55V / + 6dBu
Max. input voltage 24.5V / + 30dBu
CMR >75dB

Input impedance 20 k
Ato D conversion 24 bit, Sigma-Delta, 128 times oversampling, linearphase

Outputs 4 x XLR OUT, electronically balanced
Output voltage (nominal) 1.55V / +6dBu
Max. output voltage 8.7V /+ 21dBu

Output impedance < 100
Min. load impedance 600

D toAconversion 24 bit, Sigma-Delta, 128 times oversampling

Frequency response 20Hz - 20kHz (- 0.5dB)
S/N ratio 115dB (typical)
Distortion without input transformer < 0.01 %
Distortion with input transformer < 0.05 %

Frequency crossovers 6dB

12dB

Butterworth 12dB, 18dB, 24dB

Bessel, 12dB, 18dB, 24dB,

Linkwitz-Riley 12dB, 24 dB

Filters 38 parametric equalizers

Low-Shelving equalizer

Hi-Shelving equalizer, 6 / 12dBslope switchable,

Lo pass filter, high pass filter

All-Pass filter

Compressor / limiter 4 digital compressors / limiters

Delay

Data format 24-bitlinearAD / DAconversion, 48-bit processing
Sampling rate 48kHz

MIDI IN / OUT /THRU Data Dump, Master/Slave operation, Remote Control

Display 122 x 32Dots, graphic LCD with LED backlight

Locking function Protection against inadvertent operation, via software function

lock.

Dimensions 483mm x43.6mm x 374mm (W x H xD ), 19",1U
Weight 5 kg/ 11lbs.

W

W

W

(Q = 0.5,0.6, 0.7, 0.8,1.0, 1.2, 1.5, 2.0)

3 Master delay adjustable between 2ms and900 ms

4 channel delays adjustable between 0ms and900 ms

Delay increment 20.8us.

25

Note - Specificationsare subject to changes withoutprior notice.

28