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Joemeek twinQCS User Manual

Currentsense mic/instrument pre amp photo optical compressor.
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JOEMEEK
C O M P R E S S I O N
C O M P R E S S I O N
twinQ
Dual recording channel
CS
CurrentSense mic/instrument pre amp
Meequalizer
photo optical compressor
Dual Channel
"If it sounds right; it is right."
Joe Meek 1964

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Table of Contents

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   Summary of Contents for Joemeek twinQCS

  • Page 1 JOEMEEK C O M P R E S S I O N C O M P R E S S I O N twinQ Dual recording channel CurrentSense mic/instrument pre amp Meequalizer photo optical compressor Dual Channel "If it sounds right; it is right."...
  • Page 2 twinQ - User's guide Dual Recording Channel...
  • Page 3: Table Of Contents

    Ted Fletcher This instruction book was written by Ted Fletcher; the designer of the original JOEMEEK compressor and the whole JOEMEEK range of professional audio equipment. Ted worked in the studio with Joe Meek, the legendary record producer, in the mid 1960s.
  • Page 4: What It Is And Why

    THE INPUT AMPLIFIER Best results are achieved by using a quality condenser microphone, such as the JOEMEEK JM47 or even tube based TB-47. A new design of phantom power system assures adequate power for any 48V phantom microphone.
  • Page 5 It's Fletcher Company theory that 'big' sounds are only possible if the recording channel keeps the response and phase of the lower frequencies flat and under control. To achieve this, the JOEMEEK 'TwinQ' has an extended frequency range down to 10Hz. This ensures that there are no sudden phase shifts in the low end.
  • Page 6 (both mic and line). BALANCED AND UNBALANCED The JOEMEEK Studio Channel is designed to be used in the best studios where most (if not all) interconnections are 'balanced'. Balanced operation means that the audio is carried on two wires working in opposite phase.
  • Page 7 VU METERS. 'VU' (or Volume Unit) meters were designed originally so that the indication on the meter was a good measure of the perceived 'loudness' of the sound. While this type of meter is very popular in professional studios, and is very easy to use, it must be remembered that while it shows 'loudness', it does not necessarily show peak level or 'overload' point.
  • Page 8: The Compressor

    'line' is selected), then use the 'line' input on the rear of the unit instead. THE COMPRESSOR And now for the part of the JOEMEEK 'TwinQ' 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 9 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 Studio Channel compressor adds 'punch' and 'bite' without the dull muddiness of all others.
  • Page 10 0.5 milliseconds. The release system is the same as on the original Joemeek SC2 which has a compound release curve: After a single sudden transient signal, the compression releases extremely quickly. On a normal music signal the compression releases at a speed according to the release control.
  • Page 11 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 12: The Gain Make Up Amplifier

    THE GAIN MAKE-UP AMPLIFIER The JOEMEEK compressor is essentially a passive piece of electronics. That means that under compression, when the audio signals are being pushed down in compression, there needs to be a high grade amplifier after it to bring the audio signal back to normal volume.
  • Page 13: Meequalizer

    MEEQUALIZER The equalisers fitted to the 'TwinQ' are similar to the original Joemeek Vc5; that is, a simple shelving High frequency and low frequency equaliser, with a mid frequency lift and cut, This equaliser is similar to early frequency correction circuits used in recording studios in the late 1960s. It is musical in its effect and can produce wide and dramatic variations without unpleasant side effects.
  • Page 14: Front Panel Controls

    PHANTOM POWER SWITCH. Press this switch to select 48V phantom power for capacitor microphones such as the JOEMEEK JM47. A red LED shows that phantom power is selected. Do not switch on phantom power when dynamic microphones are being used.
  • Page 15: Technical Specification

    input). This is useful to correct for some microphone placements in the studio. INPUT GAIN is a rotary control which sets the electronic gain of the 'front end' of the 'TwinQ'. It operates on mic in and line in. COMP SWITCH switches on the compressor (and the blue LED).
  • Page 16 twinQ - User's guide Dual Recording Channel LINE INPUTS · XLR input 10K impedance floating balanced current mode. · Instrument input 1 megohm impedance unbalanced. OVERLOAD MARGIN · greater than 30dB on Mic and Line inputs in normal operation. GAIN ·...
  • Page 17: Regulations, Safety, Warranty

    · Bypass switch with indicator · Cut/boost levels approx 15dB DIGITAL OUTPUT The 'TwinQ' has the facility for fitting a Joemeek VC1QD digital unit. This will give SPDif stereo or 2 channel output at 44.1/48/88.2 and 96KHz samplerate, and at 24bit resolution.
  • Page 18: Digital Upgrade

    The optional VC1QD digital board can be purchased directly from JOEMEEK (sales@joemeek.net) and fitted simply by a customer without affecting the warranty. The VC1QD digital upgrade enables a true 24 bit 44.1-96k digital S/PDIF...
  • Page 19 LOOK OUT FOR OTHER JOEMEEK PRODUCTS! THE JOEMEEK Jm47 ‘Meekrophone’ True condenser 1” gold diaphragm microphone, with a transformer coupling for supreme sound. Supplied with pictured shockmount, case and 5m cable. The JOEMEEK Stereo compressor SC2.2 Classic stereo compression for great mixes Classic EQ from Trident-MTA, the A-Range.

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