Avalon VT-737SP, Operation Manual

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9.0 Service and
Contact Information
Maintenance and Tube Life
Because of the exceptional build quality of the
Vt-737sp, the unit will perform for many years
to come. But just like any musical instrument,
it needs care and maintenance to keep it in top
shape.
Vacuum Tube Replacement
For peak performance, Avalon Design recom-
mends changing these tubes every 5000 hours
of run time. Selected, performance-matched
vacuum tubes are available directly from the
factory. This breaks down to approximately
changing the tubes every two years assuming
use of 8 hours per day, 7 days per week. A
matched set of replacement tubes can be
purchased directly from your local dealer or
Avalon. Avalon only recommends Sovtek 6922
vacuum tubes for your Vt-737sp. Replacement
of tubes should be performed by an authorized
Avalon technician.
Meter Calibration and Alignment
The VU meter can be easily adjusted to 0 VU
when no signal is present. To adjust the VU
meter to zero:
1. Turn the unit on
2. Let unit warm up for at least 30 minutes
3. Unplug all inputs
4. From the front of the unit use a small flat head
screwdriver to turn the recessed trim pot so that
the needle reads zero.
External Cleaning
The Vt-737sp can be cleaned using an ordinary
mild house cleaner such as 409 or Windex. Do
not use abrasive cleaners or petroleoum-based
solvents. Doing so could cause damage to the
finish.
Contact Information
Avalon Design
3715 Cahuenga Blvd.
Studio City, CA 91604
Tel: 949-492-2000
Email: ado@avalondesign.com
Website: www.avalondesign.com
Service Information
Page 44 Avalon Vt-737sp Operation Manual