D.W. Fearn VT-1 Operating instructions manual - page 19
D.W. FEARN
VT-1 & VT-2 Microphone Preamplifers
19
3 .
I N S TA L L AT I O N
The VT-2 is carefully packed for shipment and it should survive all but the most brutal han-
dling. If there is any damage, keep the shipping material for use during any possible claim for
damage with the shipper.
Included in the box:
1) The VT-2 Microphone Preamplifier
2) Line cord
3) This instruction manual
Mounting
The VT-2 is designed for installation in a standard 19 inch rack. It requires 5.25 inches of ver-
tical space, but additional spacing between it and adjacent equipment is recommended for
adequate cooling. Ideally, a ventilated panel at least 1 rack unit high (1.25 inches) should be
installed above and below the VT-2 (and around any other heat producing equipment for that
matter). Be sure the bottom vent slots are not blocked. It is essential that air can flow into
the bottom and out of the top of the VT-2. Equipment that runs cool can last for a very long
time.
In tight equipment enclosures, be sure there is adequate air flow. Forced air cooling will ben-
efit all your equipment.
The VT-2 can also be used without a rack, placed on a table, counter, or even on the floor.
Optional rubber feet are available, when requested at the time of the order.
Moderate electrical and magnetic fields in the vicinity of the VT-2 should not cause any
degradation in noise performance, due to the well-shielded construction, but proximity to
devices with motors or large power transformers (i.e. tape machines or power amps) should
be avoided.
Although the vacuum tubes in the VT-2 are selected for minimum microphonic response, it
is a good practice to avoid mounting locations that subject the VT-2 to very high sound or
vibration levels.
Power
The VT-2 is designed to operate from 100, 120, or 220-240 volt, 50/60 Hz power. The unit
will be shipped wired for the voltage specified in the order, but may be changed in the field