Technical Performance - Joemeek British Channel VC6Q User Manual

VC6Q
- User's guide
British Channel

TECHNICAL PERFORMANCE

a) THE INPUT STAGE
The 'front end' is a revolutionary design using 5 complete stages of
amplification controlled by a single volume control. The design gives
(microphone) input headroom of more than 30dB; the input is floating
balanced and will easily accept microphone levels from -80dB up to more
than 0dB. If the PAD switch is included, then the input range is a fantastic
100dB Phantom power is provided for capacitor microphones.
Noise performance is up to the best laboratory standards (125.5dB below
input 20Hz to 20KHz with 200ohm input termination).
The line input is designed for balanced circuits and will accept -30dB up to
+24dB. (nominally -10dB)
The nominal operating level at the 'insert' point is -10dB. but as maximum
output at that point is +26dB the British Channel can operate with any mixer
or outboard equipment.
b) THE OUTPUT STAGE
An LED 'meter' shows levels immediately before the output stage.
An output volume control gives the choice of output volume levels. Two
output jack sockets are identical and in parallel.
Output is balanced 75 ohm with maximum output +26dB. The output stage
is auto balancing so that no gain is lost when it is used unbalanced. Noise
is approx. -80dB.
c) THE COMPRESSOR
The built-in JOEMEEK compressor is slightly different from the big studio
unit so that it is easier to use with musical instruments. The 'ratio' or slope is
variable to make very sensitive adjustments possible. The attack and
release are variable and have extreme ranges. Attack is variable from 0.5 to
5 milliseconds and the release from 250mS to 5 seconds. There is an in/out
switch for comparisons. The compression control is rotary. The
compression ratio varies from 1.5 to 1 up to 7 to 1 depending on musical
content and the setting of the 'slope' control.
d) THE EQUALISER
The equaliser changes the spectrum of the musical signal making it richer
and more exciting.
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