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Joemeek VC2 Instructions Manual

Tube channel
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  • Page 2 JOEMEEK TUBE CHANNEL INSTRUCTIONS The JOEMEEK TUBE CHANNEL VC2 is a development of historic tried and tested circuits and designs from the 1960's to the present day, combined in a single outboard rack unit by acknowledged leaders in analogue technology.
  • Page 3 VOLUME In normal use the JOEMEEK Tube Channel will work with any microphone and in any audio environment. However, some capacitor microphones can produce enormous output voltages when placed close to a loud sound source. To eliminate any possibility of overload under these conditions, a 20dB pad switch is fitted.
  • Page 4 But the JOEMEEK Tube Channel applies these professional rules and achieves a clean transparent sound. Line level inputs are plugged into the JOEMEEK Tube Channel via an XLR connector. The line input is electronically floating balanced using the 'Superbal' electronic circuit designed by Ted Fletcher in the mid 70's.

  • Page 5: Balanced And Unbalanced

    BALANCED AND UNBALANCED The JOEMEEK Tube Channel is designed to be used in the best larger studios where most (if not all) interconnections are 'balanced'. Balanced operation means that the audio is carried on two wires working in opposite phase. Then should any interference appear on the 'line', it will be effectively cancelled out.
  • Page 6 (The VU meter is connected before the output gain control) THE JOEMEEK Tube Channel COMPRESSOR. And now for the part of the JOEMEEK Tube Channel that gives it character; THE COMPRESSOR. The compressor is a photoelectric device where the sound triggers light emitting diodes which in turn control the resistance of a photo sensitive resistor.

  • Page 7: What Is A Compressor

    The musical effect is that VCA compressors sound muddy and flat, while the historic compressors sound lively and retain sparkle. But all compressors change the sound to some extent. The JOEMEEK Tube Channel compressor adds 'punch' and 'bite' without the dull muddiness of all others.

  • Page 8: Stereo Linking

    The amount of compression in use can be seen from the VU meter; but also the flickering red LED is fitted to show the depth of compression;-this is particularly useful during a busy session! STEREO LINKING On some units only a stereo link socket (phono socket) is fitted to the rear panel. To link two units fit a screened single phono to phono cable between the two link sockets.

  • Page 9: Compression Problems

    In rock music, it is possible to use considerable amounts of compression (10dB or more) and still for the effect to be slight, in classical recording, conventional compression is frowned upon but the JOEMEEK compressor can be used to great effect if handled gently.
  • Page 10 No it doesn't! Distortion inside the compressor is virtually impossible, however it is possible that the microphone amplifier is set with too much gain; turn down the COMPRESSION control and readjust the microphone amplifier gain.

  • Page 11: Using The Enhancer

    An enhancer (or exciter) adds a particular type of sparkle to sounds, particularly voices. It appears to create brightness from sounds that were 'flat'. The enhancer in the JOEMEEK Tube Channel (in common with the other JOEMEEK enhancers) works by picking off the higher frequency part of the sound, compressing and dynamically altering it, filtering off the original sound and remixing the resulting harmonics back with the signal.

  • Page 12: Tube Distortion

    Normally this amplifier is solid state and adds no noise or distortion of any sort. In the JOEMEEK Tube Channel the amplifier used is a thermionic tube. This old technology is used to produce a particular sort of 'warm' sound that is a product of the way thermionic tubes work.

  • Page 13: Using The Ins And Outs

    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.
  • Page 14 OUTPUTS A single 1/4 inch jack socket provides high level balanced line output. The two XLR output sockets are balanced low impedance, and are resistor buffered from each other. The 'HIGH LEVEL' output is low impedance balanced output at zero level. The 'LOW LEVEL' output is 200 ohm impedance microphone level (-40dB).

  • Page 15: Technical Specification

    TECHNICAL SPECIFICATION. MICROPHONE INPUT. • XLR Input 3Kohm and 800 ohm (switchable to suit 200 ohm and 50 ohm microphones). • Transformer balanced and floating. Switchable 48V phantom power. • Input level from -80dB to 0dB (20dB pad switch) • Push button 200/50 ohm source switch (on rear panel).

  • Page 16: Warranty

    European Economic Community. The EC Harmonised standards that have been applied are; a) Electrical equipment (safety) Regulations 1994 (S.I. 1994/3260) b) Electromagnetic Compatibility Directive (89/336/EEC) incorporating (S.I. 1992/2372) 1998 Distribution by JOEMEEK Distribution Phone : +44 (0)1626 333948 Fax: +44 (0)1626 333157...
  • Page 17 Worldwide distribution by: JOEMEEK Distribution, Quay House, Quay Road, Newton Abbot, Devon. TQ12 2BU. ENGLAND. Tel: +44 1626 333948 Fax: +44 1626 333157 email: sales@joemeek-uk.com www.joemeek-uk.com...

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