Manual

22
AD149 AUDIO MIXER
In the new millennium (cliché), it is noticeable that sound recordists who work away
from the controlled environment of the studio, wishing to produce a more nearly-
finished recording - requiring much less work in post-production - now demand more
facilities and control from their portable mixers.
Keeping the accountants on board is now as essential as producing a recording with a
high degree of spectral and spatial integrity: particularly in view of the fact that in
many editing suites digital control of audio now seems more important than the audio
itself.
Also, M-S facilities and powerful, wide-ranging constant-Q equalisation are rarely to
be found on digital and digitally-controlled mixing desks.
Audio Developments has, for more than 25 years, set the standards for portable audio
mixers. With AD149 we have created a new standard for the twenty-first century by
offering potential and a degree of sophistication together with a simplicity never
previously encountered in a mixer of its type or size: we have created a product
worthy to stand alongside, and be used with FLEX-EQ - the world's most powerful
equaliser.
AD149 is equally at home with its handle attached, in a studio console or in a post-
production/editing suite, and is available powered either by internal batteries or mains
only. In both cases, a suitable mains power supply is available for the mixer.
AD146 was designed to be a discreet and supremely quiet mixer. Despite all the
extra features that have been incorporated within AD149, by adopting minimum-
signal-path topology and introducing circuit-blocks only when required, the mixer's
noise performance has been maintained at the level achieved by AD146.
Four modules are available: -
microphone/line, an output module and a monitor module (There is a choice of
monitor module, either Type 1 or 2).
The monitor module is based on the one proved and approved in AD146 - the first
four-output mixer in the 140 series. The order of selector switches has been
changed to simplify the process of A/B comparisons between sends and returns to
and from the recorder. By popular request, each stereo-return has been fitted with a
calibration preset. A second EXTERNAL circuit has been included for use by a
director/producer and monitoring capabilities available to both external circuits have
been increased. A master/safety switch has been added to the communications
circuitry, making accidents very unlikely.