D.W. Fearn VT-1 Operating instructions manual - page 28

D.W. FEARN

VT-1 & VT-2 Microphone Preamplifers

28

The controls should be set as follows. The numbers refer to Figure 2 on page 21.

•  Power (8). . . . . . . . . . . . . . . . . . . . . . On

•  Input (2). . . . . . . . . . . . . . . . . . . . . . . 0

•  Attenuation (3) . . . . . . . . . . . . . . . . . mid-point

•  Phase (4) . . . . . . . . . . . . . . . . . . . . . . Normal

•  Meter (5) . . . . . . . . . . . . . . . . . . . . . . On  

• +48 (1) . . . . . . . . . . . . . . . . . . . . . . . . as required for mic

If necessary, use the Phase reverse switch. The +48 switch should be off except when need-

ed for phantom powered microphones. Turn the VU Meter off if it is pinning.

The best indication of proper operation of the VT-2 is how it sounds. This preamplifier has a

wide operating range and quite often the exact position of the controls is relatively non-criti-

cal.

Be certain that the output level of the VT-2 is appropriate for the device connected to the out-

put. +4 dBm is the accepted standard level for all professional recording equipment. Some

older equipment may be designed for 0 dBm or +8 dBm, either of which can be easily accom-

modated by the VT-2.

Semi-professional equipment frequently uses a reference level of -10 dBv (roughly 14 dB

lower than pro equipment). Although the VT-2 can fed the unbalanced, -10 dBv inputs of

semi-pro gear with no difficulty, the VT-2 VU meter will have to be recalibrated in order to be

useful. (See Section 6 - Maintenance.)

SUGGESTIONS:

You have chosen to use the VT-2 because of the superior sound it provides. To gain the max-

imum benefit from your investment, it is important that you hook up the VT-2 so that other

factors do not adversely affect the sound quality.

1. The VT-2 can be located in the studio or in the control room, but use the shortest

possible cable between the mic and the VT-2.

2. Use the best quality mic cable you can. We don’t believe you have to use esoteric

wire, but do use a good cable designed for low impedance microphones. A quality

cable with gold-contact connectors is best.

3. There should be no additional cables, connectors, junction boxes, patch jacks, etc.

between the mic and the VT-2 input.