VAC Renaissance 30/70 - Manual (Page 5)

3
UNPACKING
The Renaissance is double boxed with a custom wood crate for the greatest possible protection during shipping. Tubes
are packed individually to prevent damage, and must be fitted to the amplifier before installation can proceed.
Each tube socket is covered by a small round sticker. On this sticker is a number that corresponds to a numbered sticker
on each tube. Fit each tube into the matching socket, first removing the sticker from the amplifier and the tube. No bias
level adjustment is required. When inserting and removing tubes, handle them by their bases, not by their glass bulbs.
Please note that there is a locator pin on the octal (eight contact) tubes that indicates proper alignment. For the 300B
tubes, two pins are of larger diameter - the tube will only fit into the socket one way.
INSTALLATION
1) Provide adequate ventilation - allow at least 3 inches above and to each side.
2) Do not place in a completely enclosed cabinet. Do not stack other equipment on top of the VAC unit.
3) Do not operate on carpet or any other surface that might block air flow.
4) The chassis will become hot in normal use.
6) 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 will degrade the sound of your system.
6) Input connection is via single ended RCA jack. Speaker connection is via 11 mm binding posts (be careful not
to over tighten). Note that the negative terminal is the same for all impedance connections. For further
information see Tips & Advice: A Word About Impedance Matching.
7) Connect each channel to the power source indicated by the voltage selector card, either 100, 120, 220, or 240 volts
AC. The voltage may be selected by means of the removable selector card located behind the fuses in the power
connectors. Remove the cards and reinstall so that the desired voltage may be read. Avoid power conditioners
that float the ground pin.
8) Power requirements are approximately 500 watts. Pay close attention to power cables and quality.
9) Initially start with the Audio Ground switch in the "AF" position (or "AC" on some units), and the Feedback
control in the "0" position. See the TIPS sections for further information.
OPERATION
By time delay, sound will begin approximately 45 seconds after turn on. As with all high fidelity products, the sound
characteristics of the VAC changes somewhat as it warms up. Best sound will be achieved after about one hour of
operation. We advise against leaving the equipment on at all times for reasons of tube life and safety (see Safety Notice
at the front of this manual). Life of the output tubes averages between 5,000 and 10,000 hours.
Any time that the VAC Power Amplifier has not been used for a few weeks the sound may be different. This is also
normal for high resolution audio equipment. Optimum sound should return after a few hours of operation, preferably
with an audio signal. Refer to the discussion of break in contained in the INTRODUCTION section of this manual for
further information.
Please note that although your VAC System has been run for 48 hours at the factory, they will continue to "break in"
for approximately 150 hours. Also be aware that many components display the need for a new break in period after being
transported in unheated cargo aircraft.