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FSM-600 INTRODUCTION

The FSM-600 is a compact fixed format stereo production mixer. The design allows
the unit to accept two microphone inputs and ten stereo music inputs.
The FSM-600 is essentially a six channel mixer with each channel switchable to two
inputs. Channels 1 and 2 are switchable between low impedance microphone and
stereo line inputs. Channels 3 to 6 are switchable between A and B stereo line inputs.
The A input may be internally selected to RIAA or normal line. These channels are
fully assignable to the cross fader. Three band equalisation is fitted to all inputs along
with gain and auxiliary send controls. Illuminated push buttons and a 60 mm fader
complete the channel controls. Internal settings provide for the unit to be set to
individual needs. The output section provides plenty of facilities to cope with the most
demanding applications.
Unlike the majority of fixed format mixers on the market all connectors are fitted to the
back face which allows unrestricted access when the mixer is fitted through a work top
or in a rack.
Although the FSM-600 is a fixed format design the use of individual circuit cards per
channel improve reliability and aid servicing should the need arise. Construction and
audio quality are to Formula Sound's usual highest standards.
Power
The mixer features a fully regulated internal power supply that is designed to operate
on 220-240Vac or 110-120Vac. The selection is by an internal switch mounted on the
power supply circuit board and is accessed by removing the front cover.
DAMAGE MAY RESULT IF THE UNIT IS CONNECTED TO THE WRONG
SUPPLY VOLTAGE
Fuses
Mains fuse sizes are 315mA anti surge for 220-240V operation and 800mA anti surge
for 110-120V operation. It is important for safety reasons that the correct fuse
sizes are always used.
N.B. Internal settings should only be undertaken by skilled
personnel
Always remove the power cord before removing any covers.
Page 1

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Summary of Contents for Supersonic FSM-600

  • Page 1 Although the FSM-600 is a fixed format design the use of individual circuit cards per channel improve reliability and aid servicing should the need arise. Construction and audio quality are to Formula Sound’s usual highest standards.
  • Page 2 INPUT CHANNELS 1 AND 2 Input selector switch selects input used. M = microphone (XLR connector). L = stereo line (phono connectors). 2 parallel pairs of phono sockets allow easy parallel of source to a second input if required. L.e.d.s and label area clearly show which input is in use. Gain control sets input gain level.
  • Page 3 INPUT CHANNELS 3 TO 6 Input selector switch selects input used. A = input A B = input B. Input B is always a stereo line input (internal jumpers selects input A to be either RIAA magnetic cartridge or a standard line input.
  • Page 4: Output Section

    As an extra aid an adjacent l.e.d. illuminates to indicate when any PFL source is selected. A microphone limiter circuit is fitted to the FSM-600 to keep dynamics under control. If any microphone is routed via this limiter a yellow l.e.d. positioned below the V.U. meter will show when the limiter threshold is exceeded.
  • Page 5 AUX - controls the summed output level of the individual channel auxiliary send controls. Stereo or mono outputs are available via the 0.25” jacks on the rear panel. BOOTH - controls the booth output level. This output may be used to provide a local monitor output.
  • Page 6: Service And Configuration

    Always remove the power cord before removing covers. To gain access to the internal parts of the FSM-600 remove 4 screws from each of the two side covers which surround the FSM-600. This will give access to the majority of the internal jumpers and adjustments.
  • Page 7 Mixer Dimensions Width 483mm (19”) Height 312mm (12.25” 7 RU) Depth 110mm (4.33”) Installation cut out for mounting the FSM-600 through a work surface. 440mm wide X 305mm height Formula Sound Ltd Ashton Road Bredbury Stockport Cheshire England...
  • Page 8 INSTALLATION, CONNECTIONS AND GOOD WIRING PRACTICE The installation of professional audio systems should be left to experienced engineers wherever possible. The interconnection of audio systems can be fairly complex depending on the type and size of system and obviously well outside the scope of this handbook. We have included a few basic points for information for anyone who is new to audio systems.

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