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Joemeek SC4 User Manual

Stereo compression, perfect stereo imaging, digital and analogue flexibility
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C O M P R E S S I O N
Stereo Compressor SC4
STEREO COMPRESSION, PERFECT STEREO IMAGING,
DIGITAL AND ANALOGUE FLEXIBILITY
User's Guide
- The SC4 Stereo Compressor delivers perfect stereo imaging and control, classic
JOEMEEK sound, and complete analogue and digital flexibility to recording
studios, broadcasters and post production suites.

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Summary of Contents for Joemeek SC4

  • Page 1 Stereo Compressor SC4 STEREO COMPRESSION, PERFECT STEREO IMAGING, DIGITAL AND ANALOGUE FLEXIBILITY User's Guide - The SC4 Stereo Compressor delivers perfect stereo imaging and control, classic JOEMEEK sound, and complete analogue and digital flexibility to recording studios, broadcasters and post production suites.

  • Page 2: 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 3 A by-product of the revolutionary MS matrix coding and decoding used in the SC4 is the ability to use it as a coder/decoder, and to access the stereo audio in 'Middle and side' mode; a function of increasing importance in sound production...

  • Page 4: Sc4 Main Features

    SC4 Main Features 1) THE ANALOGUE COMPRESSOR SECTION The SC4 IS a Joemeek SC2 stereo compressor with additional features: The analogue inputs are balanced via XLR connectors, at line level, and the input gain control can add gain up to a limit of 18 dB.

  • Page 5: The Digital Interfaces

    SC4 M&S DAD Stereo Compressor - User's guide A detented output gain control is calibrated to give 6dB gain in hand and the MS signal is then decoded back into stereo left and right. The analogue output stage gives balanced outputs via XLR connectors.

  • Page 6: The Joemeek Compressor

    The JOEMEEK compressor is the first device commercially available to have been designed purely as an effects compressor. Its purpose is to change the way the ear perceives the sound; its action changes the clarity, balance and even rhythmic feel of music.

  • Page 7: Mimic' Rock Concerts

    5dB increase at the output, a continuous process where the more you put in, the more it's pushed down. The JOEMEEK compressor just doesn't work that way. As volume increases at the input, a point is reached where the compressor starts to work and the gain through the amplifier is reduced.

  • Page 8: Time

    TIME Of course the JoeMeek compound compression curves tell only part of the story. There are also the time constants of attack and release which have enormous effect on the musicality of the sound. The attack time produces audio 'punch' that again is a psychoacoustic effect, different attack times mimicking different levels of human biological compression.

  • Page 9: Controls And Indicators

    SC4 M&S DAD Stereo Compressor - User's guide CONTROLS AND INDICATORS INPUT GAIN CONTROL is a rotary pot controlling the gain of both the analogue and the digital inputs to the compressor. The range of the control is from fully off, to a system gain of 18dB (with the output gain control at its callibration point).
  • Page 10 SC4 M&S DAD Stereo Compressor - User's guide The VU meters read stereo volume level (LH meter) and compression depth (RH meter). WIDTH is a rotary control affecting the 'side' channel which contains the width information. At fully anticlockwise the stereo signal becomes mono. at full clockwise, the width information is 100% greater than in the normal stereo image (200%).

  • Page 11: Inputs And Outputs

    SC4 M&S DAD Stereo Compressor - User's guide INPUTS AND OUTPUTS ANALOGUE INPUTS Line inputs are 20Kohm floating balanced via XLR connectors maximum level is approx +28dBu. ANALOGUE OUTPUTS Line outputs are XLR connectors 75 ohm source impedance, auto-centreing balanced. Maximum output +26dBu.

  • Page 12: Technical Specification

    SC4 M&S DAD Stereo Compressor - User's guide TECHNICAL SPECIFICATION ANALOGUE SIGNAL PATH INPUTS : XLR connectors. Floating electronic balanced inputs 20Kohm impedance. INSERT : unbalanced 1/4 inch jack.10Kohm nominal -10dB, source impedance 400 ohms. OUTPUTS : Main analogue outputs XLR connectors. Auto centering electronic balanced.

  • Page 13: Safety, Warranty

    SC4 M&S DAD Stereo Compressor - User's guide SAFETY The unit complies fully with European Cenelec requirements (CE) and may be used in all territories subject to safety approval of the power supply to local regulations. WARRANTY In the unlikely case of a breakdown, please return the unit and power supply in its original packing through the supplier.

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