The SC-Ó6A Parametric Equalizer offers compíete equalization flexability. Compared to
graphic type equalizers that preset center
frequency and bandwidth, the SC-Ó6A pro
vides four control sections per channel that
can tune over a 5,6 octave range and boost or
cut one note, forty notes, or any number in
between. Some applications include: shaping
the overall sound of a PA system to improve
response, feedback control, instrument tone
control, front system speaker or room reson
ance problems, vocal and dialogue equaliza
tion, broadcast onnouncer voice enhance
ment, and record wearequalization correction
and specie! effects, or any application where
complete equalization control is desired.
FEATURES:
• Center frequency funable over a 5.6
octave range
• Adjustable bandwidth from 3 1/3 to 1/20
of an octave
• Rugged 16 gauge steel chassis
• Master and individual band in/out bypass
switching
• Input and output can be used as
balanced or unbalanced
• Peak overload light
• Full 20 dB of headroom
• Optionol 8 band mono operation
• True reciprocal curves
At the heart of the SC-66A is a unique bandpass filter
circuit. Basically a "state-variable" type, this filter is
trimmed and optimized to provide excellent trans
ient response and a wide range bandwidth adjust
ment. Each filter in the SC-66A can be tuned over a
50:1 frequency range (about 5 1/2 octaves) and a
70:1 bandwidth range with no more than a 2 dB
amplitude error at center frequency. At its sharpest
setting, the filter has a "Q" of about 35 and gener
ates a response curve with 3 dB points only 1/20
octave apart, making feedback control possible
with no audible side-effects. The filters are manu
factured as Individual, plug in units to make servic
ing easy.
Each filter is placed in the feedback loop of a
summing amplifier to produce the desired frequency
response. Since a separate summing amplifier is
used for each band, no interaction between bands
occurs. A husky output stage is provided so that low
impedance loads and long cables may be driven
easily.
CONTROLS
Master
Master Gain
Master Defeat Switch
INPUT IMPEDANCE
Per Band
Amplitude
Defeat Switch
Frequency
(low)
(low-mid)
(hi-mid)
(high)
Bandwidth
i15dB
l15 dB
16HZ-800HZ
48Hz-2.4kHz
160Hz-8kHz
480Hz-24kHz
3 1/3 ocf - 1/20 OCt
10k n active balanced
bridging
SPECIFICATIONS:
FREQUENCY RESPONSE
OUTPUT IMPEDANCE
MAX. IN-OUT LEVEL
DISTORTION
HUM AND NOISE
POWER
SIZE
SHIPPING WEIGHT
50a .term with 600n
or more
• 20dBm ( » 5 dBm at max.
boost, full sharp)
±.5dB 20Hz-20kHz
<.05% THD, HOdBV
20Hz-20kHz
-87dBV (eq in) -95dBV
(eq out)
120 VAC, 50-60HZ, 5W
19"L X 51/4"H X 6"D
12 lbs.
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