Viking Electronics E111 - Manual (Page 9)

On the road use
The E 111/112 are sturdily constructed with an aluminum die-cast front panel that is
reinforced by means of an iron plate attached to its back. To ensure that strength is
maintained during their transportation from one place to another, however, you should
also reinforce each unit from the back of the rack with a special support bracket. This can
be accomplished by removing cord-hangers on the rear panel, and screws that hold the
rear panel to chassis, and fitting the special support brackets through the holes.
Top view
Side view
Special support bracket
Center Frequency Control
The Center Frequency (fc) of each frequency band is
continuously variable within a range of one octave
(between 0.7fc and 1.4fc). Thus the overall frequency
response may be delicately adjusted. For example, if
the 1kHz center frequency control has a 12dB boost,
the frequency response looks like that of curve 1. If the
center frequency control is turned anticlockwise, the
response will be like curve 2, while in the case of it
being t u r n e d f u l l y clockwise, the frequency response
will be as shown by curve 3.
Bandwidth Control
The "Q"of each filter is continuously variable from 1.5
to 8. If the bandwidth control is turned clockwise, the
bandwidth is adjusted to approximately a one octave
range, while in the case of it being turned fully
anticlockwise, the bandwidth is adjusted to aproxi-
mately a 1/6 octave range as shown in the right figure.
— 8 —
Installation Precaution
Functions