Nobels PRE-MASTER Quick Start Manual

Thank you for purchasing the NOBELS PRE-MASTER!
You have chosen a high-quality device with wide functional range. Before using the PRE-
MASTER for the first time please read this manual thoroughly in order to get optimum results
and prevent malfunction.
The NOBELS PRE-MASTER is a universal Pre-Amplifier for music applications. It serves as a
convenient tool in processing a wide range of musical instrument signals, e.g. the output of an
electric guitar. This will yield a considerable increase in sound quality if the device is adjusted
properly.
It is possible to achieve much more detailed and dynamic instrument signals when using the
PRE-MASTER as a front end for studio recordings or PA systems.
Its flexible set of controls allows for optimum level adjustment for any amplifier, recording device,
mixer or effect unit.
Power switch: Selects the different
operating modes of the PRE-MASTER.
In the leftmost position the device is
switched off and no signal is present at
the output. When set to the middle
position ("flat") the preamplifier is en-
gaged but the tone controls remain
inactive. Any movements of the 3 corre-
sponding knobs have no influence on
the signal.
In its rightmost position ("eq") the
switch engages the tone controls as
well so that all knob settings become
relevant.
Power LED: Glows when a proper
operating voltage is supplied and thus
indicates that the PRE-MASTER is rea-
dy to operate.
Gain control: Sets the gain of the sig-
nal present at the PRE-MASTER´s In-
put. Turning the control clockwise will
increase the gain whereas counter-
clockwise rotation will decrease it.
Bass control: Adjusts the low frequen-
cies around 80Hz. In the neutral 12
o´clock position the signal will pass
unaffected. An increase of the bass
frequencies is achieved by rotating the
control clockwise, a decrease by con-
verse rotation.
Mid control: Works similar to the bass
control, except that it affects the middle
frequencies around 1kHz.
Treble control: Increases or decrea-
ses the high frequencies from appro-
ximately 5,5 kHz upwards.
An increase of the high frequencies is
also achieved by rotating the control
clockwise, a decrease by converse
rotation.
Volume control: Sets the output level
of the PRE-MASTER in order to pass
the signal to the following device with
optimum amplitude. As with the tone
controls, clockwise rotation of
knob will increase the level.
Meter switch: Selects where the sig-
nal to be displayed on the LED bar-
graph is tapped from the audio path.
When switched to the right position
("pre") the signal is tapped before the
volume control so that its setting has
no influence on the meter reading.
This mode is intended for setting the
PRE-MASTER´s internal working level
via the gain control.
In the right position of the switch ("post")
the signal is tapped behind the volume
control and the meter is thus displaying
PRE-MASTER
the ´s output level. This
mode is intended for setting the opti-
mum level for other devices that are
PRE-MASTER
connected to the
output. This helps to prevent possible
distortion in following input stages.
LED bargraph (level indicator): Ser-
ves as an optical indicator for different
signal levels depending on the setting
of the meter switch.
DC in jack: Connects to a regulated DC
power supply (refer to technical data).
The Interlock System: Housings of the MASTER SERIES and COMPACT SERIES are
mechanically 100% compatible. Up to four units can easily be interlocked and mounted to a 19"
standard tray using one rack space:
DC out jack: Other devices, e.g.
NOBELS effect pedals, can be con-
nected here for feeding multiple gad-
gets from one power supply.
this
This feature requires a properly di-
mensioned DC source as well as
matching power requirements for all
devices in question.
NOBELS keeps with the most widely-
used international standard so there
should be no problem in most cases.
Please refer to the technical data sec-
tion for details.
Input jack: The instrument (e.g. elec-
tric guitar) is connected here via a stan-
dard instrument cable.
Output jack: This is connected to the
next device in the signal chain, e.g. a
recording machine, mixer or amplifier.
In most cases a regular guitar cable
works best for this purpose as well.
´s