Owner manual

5
Microphone powering - the mixer will remain unconditionally stable if the powering on
unterminated input channels is switched off - this also improves the noise
performance and crosstalk. Powering - 48v phantom or 12v tonader - may be
selected before or after the microphone is connected to the module.
Module fix screws - Hexagon head screws are used to fix the modules and back
cover. The size being 1.5mm HEX A/F with a 2.5M thread.
If it becomes necessary to remove modules or back cover it is strongly advised using
a good quality hexagonal head driver.
Use of a screwdriver, however desperate, is not recommended.
Surfaces - every working surface is covered by a hard plastic membrane which is
printed on the reverse side. These surfaces may be cleaned by most solvents, and
without fear of the legends being erased.
Connectors - for convenience, the connector panel is labelled for reading from above.
All connectors are in line with their corresponding module.
Every input module is mechanically shielded against radio-frequency interference.
Abbreviations
PPM peak programme meter
VU volume unit
VR variable resistor
X-Y coincident stereo-microphone
A-B spaced-apart stereo-microphone
M-S middle-side; techniques and microphone described by A D Blumlein
PCB printed circuit board
HPF high-pass filter
Finally, may we draw your attention to our range of portable, battery-operated audio-
toys called PORT-A-FLEX (AD066) which will complement your new mixer.
No 1 - broadcast quality compressor/limiter. Nos 3, 7, 8, 10 - distribution amplifiers for
microphone- and line-level signals. No 13 - the aforementioned FLEX-EQ in its
portable guise.
We wish you many trouble-free hours of use from your mixer. As a company, we are
fully committed to BS EN ISO 9001. Should you have any problems or require any
further information on FLEX-EQ or the M-S microphone technique, please do not
hesitate to contact us on 01543 375351 or by fax on 01543 361051.