VC2 12
The tube make up amplifier in the JOEMEEK Tube Channel has been optimised to
produce minimal noise and distortion, but the remainder distortion in the system is
second order and this is one of the reasons that the sound of the Tube Channel is warm
and pleasant.
TUBE NOISE
The characteristic sound of the noise produced by a tube amplifier is very unlike the
noise in a solid state amplifier. The frequency spectrum is different and this contributes
psychoacoustically to the 'warm' sound of the Tube Channel.
USING THE INS AND OUTS
MICROPHONE.
The microphone input is an XLR connector. The microphone used should be balanced
200 ohm impedance (or 50 ohm impedance; impedance select switch).
Connections are;
• Pin 1 is ground or screen.
• Pin 2 is positive phase or 'hot'
• Pin 3 is negative phase (or ground for unbalanced).
To avoid impulsive 'clonks' and the possibility of causing magnetising in the microphone
input transformer, plug in capacitor microphones before turning on the phantom power.
LINE INPUT.
The line input is a high impedance floating balanced input suitable for any line level
audio signal. The line input is disabled when 'mic' is selected by the mic/line switch and
vice-versa.
INSERT POINT.
This is used to insert another effect or outboard equipment into the Tube Channel. The
microphone/line amplifier output appears on the tip of the 1/4 inch jack socket, the 'ring'
is the return input. When no jack is inserted, the socket is 'normalled' (internally linked).
MIX INPUT.
This is an auxiliary 1/4 inch jack unbalanced line level input which mixes with the
normal mic or line. This input is immediately before the compressor.
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