Sound Performance Lab 9844 - Manual (Page 8)

8
Sound optimization already during recording:
FLAIR circuitry
The FLAIR circuitry enhances the presence of vocals and acoustic
instruments, FLAIR makes these elements cut better through a
mix. It has proved to be superior in double-blind tests. Once a
signal completes the semi-conductor amplification stage, it is
then split and fed into the tube stage and the FLAIR electronics.
The FLAIR circuit is built from a unique valve/inductor/capacitor
hybrid. It operates in a bandpassed frequency range from 1.5 kHz
to 20 kHz. The center frequency is set at 6 kHz with a boost of 2.5
dB. Frequency response, harmonic contents and time of impact
are manipulated as well. The FLAIR circuit's output is mixed
directly in the tube with the source signal. The circuit's character
can be best described as a "closed shelving bandpass"; neverthe-
less, a shifted timebase (phase) is responsible for boosting the
harmonic content. The close correlation, however, between
frequency- and amplitude-timebase to the dynamics of the input
signal remains intact.
When working on a hard disc recording system, you will greatly
appreciate the appeal of the Flair circuitry and the topnotch
sounding signal it delivers. It can spare you hours of twiddling
with a compromised recording.
WARM UP circuit
The WARM UP circuit measures the tube's anode plate and heater
voltages. After approximately eight seconds the anode voltage of
250 Volts is reached; the heater voltage takes only four seconds.
Once the ideal working status is achieved, the output signal is
enabled. As the WARM UP LED is lit, no output is present.
Tech Talk
The FLAIR circuitry
enhances a signal's presence
and cutting ability.
The correlation between
frequency- and amplitude-time-
base to the dynamics of the input
signal remains intact.
Ideally suited for HD recording.