Balanced Audio VK-55SE - Manual (Page 4)

Installing Tubes
Install the signal 6SN7 and6H30 tubes can in the front sockets. When installing the
output 6C33C-B tubes please make sure their pins are lined up with the sockets. Insert
the tubes with gentle downward pressure, while making slight rocking motion to
fascilitate the proper insertion.
The two 6922 tubes used as gain stage current sources, are located inside the chassis. To
gain access to them, remove the bottom cover. The unit is shipped to you with these
tubes installe.
Physical Placement
It is recommended that you provide open space above the unit for proper ventilation, with
no electronic components placed directly overhead.
Mount the unit on a hard surface with proper ventilation underneath. Avoid placing the
unit directly on a carpeted floor.
Connecting the VK-55SE to Your System
For Balanced Preamplifiers:
Use balanced XLR interconnects. The left and right channel input connectors are clearly
marked on the back panel of the VK-55SE.
Note: The VK-55SE XLR inputs are wired as follows:
Pin 1: common/ground
Pin 2: positive
Pin 3: negative
For Single-Ended Preamplifiers:
Single-ended preamplifiers have RCA connectors. The VK-55SE power amplifier is
designed to work with either balanced or single-ended preamplifiers connected to its inputs.
All that is required to connect a single-ended preamplifier with RCA connectors to the
VK-55SE’s inputs is the optional balanced to single-ended adapters. These adapters are
available from Balanced Audio Technology at a nominal charge.
For Speaker Connections:
The speaker connectors are clearly marked on the back panel of the VK-55SE. There are
several sets of output taps marked LOW, MEDIUM and HIGH for connecting a variety
of speakers to the VK-55SE. Please note that some experimentation may be required.
Try each output tap until you find the one that gives the most balanced performance in
your system.