Specifications subject to change without prior notice.
© Nobels Electronics, Barnerstr. 42, 22765 Hamburg, Germany, www.nobels.com
Owners manual
Instructions for use:
When using two input signals jacks "A" and "B" serve as inputs whereas jack "X" serves as the
output:
When going for two output signals jacks "A" and "B" serve as outputs whereas jack "X" serves
as the input:
Whenever signal connections are made between different devices with separate safety grounds
there is a chance of hum problems introduced by so called earth loops.
For this reason the A/B-MASTER provides a simple but effective option to break these
troublesome loops. To achieve this the user must simply set the "ground" switch of the input
or output in question to its upper "lift" position. Sometimes this might be necessary on several
in-/outputs.
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:
Technical data:
Operating voltage
: 9 ~ 12 V DC / 150 mA (regulated)
Current drain
: 15 mA max.
Dimensions (mm)
: 104 x 69 x 43
Signal-
source
Amp 1
Amp 2
AB
MASTER
A
B
X
Amp
AB
MASTER
Signal-
source
1
Signal-
source
2
A
B
X
ENGLISH
A
/B
-M
A
S
T
E
R
S
2
-0
4
0
5
2
7
E
N
A/B-MASTER
