AUDAC PRE16 Installation and operating instructions

PROFESSIONAL AUDIO EQUIPMENT
PRE16/26 6 Channel Pre-Amplifier – Single/Double Output Zone
User Manual &
Installation Guide
PRE16/26
AUDA
C

AUDAC PROFESSIONAL AUDIO EQUIPMENT
User Manual & Installation Guide
AUDAC
http://www.audac.eu
[email protected]

2
INTRODUCTION..................................................................................................................................................................................................................... 3
ENVIRONMENT ...................................................................................................................................................................................................................... 4
SAFETY REQUIREMENTS ................................................................................................................................................................................................... 5
CAUTION –SERVICING...................................................................................................................................................................................................... 5
OVERVIEW FRONT AND REAR PANEL .......................................................................................................................................................................... 6
FRONT .................................................................................................................................................................................................................................... 6
REAR ...................................................................................................................................................................................................................................... 6
OVERVIEW INPUT CONTROLS ......................................................................................................................................................................................... 7
INPUT (FRONT)..................................................................................................................................................................................................................... 7
OVERVIEW OUTPUT CONTROLS..................................................................................................................................................................................... 7
OUTPUT (FRONT )............................................................................................................................................................................................................... 7
FRONT PANEL DESCRIPTION ........................................................................................................................................................................................... 8
OVERVIEW INPUT CONNECTIONS.................................................................................................................................................................................. 9
INPUT (REAR) ....................................................................................................................................................................................................................... 9
OVERVIEW OUTPUT CONNECTIONS ............................................................................................................................................................................. 9
OUTPUT (REAR) ................................................................................................................................................................................................................... 9
REAR PANEL DESCRIPTION ............................................................................................................................................................................................ 10
CONNECTIONS AND CONNECTORS.............................................................................................................................................................................. 11
GETTING STARTED ............................................................................................................................................................................................................ 12
BLOCK DIAGRAM ............................................................................................................................................................................................................... 13
ADDITIONAL INFORMATION.......................................................................................................................................................................................... 14
TECHNICAL SPECIFICATIONS ....................................................................................................................................................................................... 14
PERSONAL NOTES............................................................................................................................................................................................................... 15
Index

3
Introduction
This section briefly describes the possibilities of the PRE16/26 Preamplifier.
he PRE16/26 Preamplifier was developed as an easy to use, flexible solution for
multifunctional use.
During the development of the PRE16/26, the AUDAC-engineers wanted to achieve four goals:
-Delivering a flexible audio solution to control multiple functions
-Easy to use
-Excellent sound quality
-Modern and advanced design
The Audac PRE16/26 stereo preamplifiers are designed to be used in combination with the
Audac D, T, Q and CPA Series Amplifiers, but can also be used for various other applications.
It has 2 balanced XLR microphone inputs which are both equipped with a gain control, a 3-band
tone control, phantom power and a talk over function.
Channel 1 is constructed as a balanced stereo line input channel, fitted with 2 balanced XLR
connectors, a stereo/mono switch and a gain control.
Channels 2, 3 and 4 are constructed as unbalanced stereo line input channels, each fitted with 2
RCA/Cinch connectors and a gain control. The output section features 2 balanced XLR
connectors and a stereo/mono switch for every output zone.
The PRE16/26 can be used in commercial applications such as restaurants, hotels, shops,
warehouses, professional offices, public buildings, and many more.
T

4
Environment
Do not place this unit in an enclosed environment such as a bookshelf or closet. Ensure
that there is adequate ventilation to cool the unit.
Do not place the unit in environments which contain high levels of dust, heat, moisture or
vibration.
Do not use the unit near water or other liquids. Make sure no water or other liquids can be
spilled, dripped or splashed on the unit.
This unit was developed for indoor use only. Do not use it outdoors.
Do not place objects on top of the unit.
Place the unit on a stable base or mount it in a stable 19” rack.
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5
Safety Requirements
Always handle the unit with care.
Only use a grounded socket outlet and a power cord with grounding plug to plug in the
unit.
This unit is not a toy. It should not be operated by children.
Do not stick objects through the openings.
Do not open the unit (risk for electrical shock).
CAUTION – SERVICING
This unit contains no user serviceable parts. Refer all servicing to qualified
service personnel. Do not perform any servicing unless you are qualified to do
so.
Note
This product conforms to the following European Standards: EN 50081-1: 1992, EN
50082-1: 1992, EN 60065: 19



6
Overview front and rear panel
FRONT PANEL
REAR PANEL
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7
Details front and rear panel
Overview Input Controls
INPUT (FRONT)
Overview Output Controls
OUTPUT ( FRONT )
1. In
p
ut Volume Control
3. Si
g
nal routin
g
buttons
(
ONLY PRE26
)
4. Routing indication LED’s (ONLY PRE26)
2. Cli
p
LED indicator
5. 6 se
g
ment LED bar 7. Master volume control
6. Out
p
ut channel E
Q
control
8. Power button and
p
ower indicator

8
Front panel description
1. Input Volume Control:
The Input Volume Control knobs allow you to adjust the individual level for each input channel.
2. Clip LED indicator:
These indicator LED’s warn against clipping on the input signal. When the clip LED indicator is
flickering, the input signal level is 3dB below clipping level and the gain control potentiometer on
the back of the amplifier has to be reduced.
3. Signal routing buttons (ONLY PRE26):
These buttons allow you to select the routing of every input channel to one or both output
channels. By pressing this button, the corresponding input signal will be routed to the selected
output zone. By pressing the same button again, the routing of the signal will be repealed.
4. Routing indication LED’s (ONLY PRE26):
These LED’s indicate to which output zones the corresponding input signal is routed. The Z1
LED represents Output 1, and Z2 represents Output 2.
5. 6 Segment LED bar:
This LED bar indicates the level of the output signal for the corresponding output zone.
6. Output channel EQ control:
Every output channel has a two band tone control whereby specific frequency ranges of the signal
can be amplified or attenuated. It can be adjusted over a range of ± 15 dB.
7. Master volume control:
With this knob, the overall volume of the corresponding output channel can be adjusted.
8. Power button and power indicator LED:
The power switch has to be used for turning the device on/off. A blue power indicator LED lights
up when the PRE16/26 is turned on.

9
Overview Input Connections
INPUT (BACK)
Overview Output Connections
OUTPUT (BACK)
12. Balanced
Microphone input
11. 3 Band Tone
Control
14. Microphone
T
alk over
switch
13. Microphone
Phantom Power Switch
10. Balanced
Stereo Line Input
9. Unbalanced
Stereo Line Inputs
15. Balanced Stereo Line out
p
ut
16. AC
p
ower inlet with fuse

10
Rear panel description
9. Unbalanced stereo line inputs:
These unbalanced line level inputs can be connected to equipment with unbalanced line level
outputs. A gain control potentiometer is provided to control the level of the input signal. There are
three stereo unbalanced line inputs available on the PRE16/26.
10. Balanced stereo line input:
The balanced stereo line input allows connecting a music source with balanced line outputs. A gain
control potentiometer is provided to control the level of the input signal and a mono/stereo switch
allows to select the output mode. When switched to mono, the stereo signals are mixed to mono
and are available on both Left and Right output channels.
11. 3 Band tone control:
Every microphone input channel has a separate three band tone control, whereby specific
frequency ranges of the signal can be amplified or attenuated. It can be adjusted over a range of ±
15 dB.
12. Balanced microphone input:
There are two balanced microphone inputs available
13. Microphone phantom power switch:
If a microphone requires phantom power, the phantom power switch of the corresponding Mic
channel can be switched ON. This applies +15 V DC phantom power to the microphone.
14. Microphone talk over switch:
When the talk over switch is turned ON, all other connected music sources will be suppressed
when a signal is present at the corresponding Mic channel. This function is mainly used for paging
purposes.
15. Balanced stereo line output:
The output zone(s) have balanced stereo XLR output terminals. The main amplifier can be
connected to these output terminal.
16. AC power inlet with fuse:
The mains power supply (110~240V AC / 50~60 Hz) has to be applied to this AC power inlet.
The connection is made by an IEC power connector and is fitted with a fuse. When replacing the
fuse, make sure that the value of the replacement fuse matches the value of the original fuse (500
mA / 250V).

11
Connections and Connectors
The in- and output connections of AUDAC audio equipment are performed corresponding to
international wiring standards for professional audio equipment.
Cinch (RCA):
tip = signal (left or right)
ring = ground
XLR:
1 = ground / shield
2 = +sig
3 = -sig
XLR female:
XLR male:
6.3mm (1/4”) balanced jack plug:
tip = +sig
ring = -sig
sleeve = ground / shield
6.3mm (1/4”) unbalanced jack plug:
tip = signal
sleeve = ground / shield
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12
Getting Started
The PRE16/26 Preamplifier can be switched on by pressing the power button on the front panel.
The blue ‹ ON › LED will light up if the device is powered-up.
On the front panel, every channel has a Clip LED indicator to control the input levels. Each input
channel also features 2 buttons and a series of green indication LED’s to control the routing of the
input signal (Only PRE26). For the output section, every zone has its own 6 segment LED bar,
master volume control knob and 2 band control knobs to control the output signal.
The volume of the input signals can be controlled by turning the volume knobs of the input
signals on the front panel of the PRE16/26. The master volume knob and the 2 band tone control
knobs allow you to adjust the volume, bass and treble of the output signal. A VU-bar indicates the
signal level of the output signal.
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13
Block Diagram

14
Additional Information
Technical specifications
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Fre
q
uenc
y
res
p
onse 20 Hz –
20 kHz
THD+N < 0,1%
Residual Noise <-75 dB
Si
g
nal to noise ratio > 90 dB
Crosstalk <-75 dB
Tone Control ±15 dB
Input sensitivity
Mic
1
-
2: 1,0 mV
Ch
1: 200
mV
Ch 2 - 4: 200 mV
Input impedance
Mic
1-2: 600 Ohm balanced XLR
Ch
1: 2 x 600 Ohm balanced XLR
Ch 2-4: 47kOhm unbalanced RCA/Cinch
Out
p
ut level 1,2 V
Output impedance 2 x 600 Ohm balanced XLR (PRE16)
4 x 600 Ohm balanced XLR (PRE26)
Phantom
p
ower
15V DC ± 3V
Power su
pp
l
y
110~240V AC / 50~60 Hz
Power Consumption 12 Watt
Construction Steel
Mountin
g
19” Rack
Dimensions (W x H x D) 482 x 325 x 44 mm
Unit Hei
g
ht 1 HE
Color Black

15
Personal notes

1
PROFESSIONAL AUDIO EQUIPMENT
PRE16/26 6-Kanal Vorverstärker - einzige/doppelte Ausgangszone
Bedienungs- und
Installationsanleitung

2
AUDAC PROFESSIONAL AUDIO EQUIPMENT
Bedienungs- und Installationsanleitung
AUDAC
http://www.audac.eu
[e-mail]

3
Inhalt
EINLEITUNG ...........................................................................................................................................................................................................................4
UMGEBUNG .............................................................................................................................................................................................................................5
SICHERHEITSHINWEISE ..................................................................................................................................................................................................6
WARNUNG –WARTUNG ................................................................................................................................................................................................6
ÜBERBLICK FRONTBLENDE UND GERÄTERÜCKSEITE.................................................................................................................................7
FRONTBLENDE..................................................................................................................................................................................................................7
GERÄTERÜCKSEITE ........................................................................................................................................................................................................7
ÜBERSICHT EINGANGSKONTROLLE.........................................................................................................................................................................8
EINGANG (FRONTBLENDE).........................................................................................................................................................................................8
ÜBERSICHT AUSGANGSKONTROLLE.........................................................................................................................................................................8
AUSGANG (FRONTBLENDE) ........................................................................................................................................................................................8
BESCHREIBUNG FRONTBLENDE................................................................................................................................................................................9
ÜBERSICHT EINGANGSVERBINDUNGEN............................................................................................................................................................ 10
EINGANG (GERÄTERÜCKSEITE)............................................................................................................................................................................. 10
ÜBERSICHT AUSGANGSVERBINDUNGEN............................................................................................................................................................ 10
AUSGANG (GERÄTERÜCKSEITE) ............................................................................................................................................................................ 10
BESCHREIBUNG GERÄTERÜCKSEITE.................................................................................................................................................................... 11
VERBINDUNGEN UND ANSCHLÜSSE ..................................................................................................................................................................... 12
SICH AN DIE ARBEIT MACHEN.................................................................................................................................................................................. 13
BLOCKDIAGRAMM ............................................................................................................................................................................................................. 14
ZUSÄTZLICHE INFORMATIONEN............................................................................................................................................................................ 15
TECHNISCHE SPEZIFIKATIONEN .......................................................................................................................................................................... 15
NOTIZEN ................................................................................................................................................................................................................................ 16

4
Einleitung
Dieser Abschnitt gibt einen kurzen Überblick über die Ausstattungsmerkmale des PRE16/26 Vorverstärkers.
Der PRE16/26 Vorverstärker wurde entwickelt wie eine benutzerfreundliche, flexible Lösung
für multifunktionale Verwendung.
Während der Entwicklung des PRE16/26 wollten die AUDAC Ingenieure zum 4 Ziele kommen:
-Eine flexible Audio Lösung lancieren um mehrfache Funktionen zu kontrollieren.
-Benutzerfreundlichkeit.
-Ausgezeichnete Tonqualität.
-Modernes und fortschrittliches Design
Die AUDAC PRE16/26 Stereo Vorverstärker wurden entwickelt für Verwendung mit die Audac
D, T, Q und CPA Serien Verstärker, aber man kann sie auch verwenden für verschiedene andere
Anwendungen. Es hat 2 balancierte XLR-Mikrofoneingänge beide ausgestattet mit
Verstärkungskontrolle, eine 3-Band Tonregelung, Phantomspeisung und Crossover Funktion.
K1 setzt sich zusammen aus einen balancierten Stereo Linie Eingangskanal, ausgestattet mit 2
balancierten XLR-Anschlüssen, einen Stereo/Mono Schalter und eine Verstärkungskontrolle. K2,
3 und 4 sind ausgestattet mit unbalancierten Stereo Linie Eingangskanälen. Jede ausgestattet mit 2
RCA/Cinch Anschlüssen und eine Verstärkungskontrolle. K2, 3, 4 sind ausgestattet mit
unbalancierten Stereo Linie Ingangskanälen, jede mit 2 RCA/Cinch Anschlüssen und eine
Verstärkungskontrolle. Das Ausgangsteil hat 2 balancierte XLR-Anschlüsse und einen
Stereo/Mono Schalter für jede Ausgangszone.
Der PRE 16/26 können Sie verwenden in kommerzielle Anwendungen wie Gaststätten, Hotels,
Geschäfte, Kaufhäuser, Professionelle Büros, offenbare Gebäude, und so viel mehr.