VAC Phi 200 - Manual (Page 5)

4
INSTALLATION - STEREO USE
01) Install the vacuum tubes. Each tube or its box has a “V” number, which corresponds to the
labels on the top plate of the amplifier; these indicate where each tube should be installed.
Fit each tube into the matching socket.
When inserting and removing tubes, handle them by their bases, not by their glass bulbs.
Note that there is a locator pin on the octal (eight contact) tubes that indicates proper
alignment.
02) Connect input cables, either RCA types for unbalanced sources, or balanced XLR types for
balanced sources.
03) Verify that the two “Balance / Single-Ended” switches are set to the same desired position.
Set the input type switch to XLR (for balanced input) or RCA (for single-ended input).
04) If your amplifier is fitted with a MONO SWITCH, ensure that it is set to “STEREO”.
05) Connect the speaker cables; the black lead goes to “-“ or “Ground”. The red lead goes to
“+” or “Positive”. Follow the labels for the impedance that best matches your loudspeakers.
06) Connect a12 volt trigger cable into the socket on the back panel if desired; this allows the
amplifier to be turned on and off by an external device.
07) Provide adequate ventilation - allow at least 3 inches above and to each side.
08) Do not place in a completely enclosed cabinet. Do not stack other equipment on top of the
VAC unit.
09) Do not operate on carpet or any other surface that might block air flow.
10) The chassis will become hot in normal use.
11) Do not allow the chassis to touch any metal parts, such as the frame of an equipment rack.
This might create a parallel ground path that could degrade the sound of your system.
12) Connect the power cord to the power source indicated on the rear panel (will be either
100, 120, 220, or 240 volts AC). Voltage conversions must be done at the factory of by
an authorized VAC importer.
13) Avoid power conditioners that float the ground pin.
14) Power requirements are approximately 600 watts. Pay close attention to power quality, and