Crest Audio X-VCA Specifications

specifications
frequency response +0/-1dB 20Hz–20kHz ref 1kHz @ +4dBu —any input to any output
THD any output <.01% THD
20Hz–20kHz @ +15dBu out
noise mic ein better-than -128dBu —150ohm source, 60dB gain
20Hz–20kHz
bus output noise less-than -80dBu—output fader @ 0dB,
residual output noise less-than -90dBu—output fader at minimum
crosstalk channel mute >90dB channel routing
channel fader attenuation >90dB aux send attenuation >75dB
phase shift < +/- 30 degrees, —mic-in to main-out
20Hz–20kHz
inputs mic-in 4k ohm balanced—max voltage gain to left/right balanced out = 98dB
XLR
line-in TRS >10k ohms balanced
outputs left/right/mono—group, aux, matrix—monitor-out all 100 ohms balanced
headphones to drive > eight-ohms
insert send 50 ohms ground-compensated on TRS jack
return >10k ohms balanced on TRS jack
nominal output level +4dBu max level into >1k ohms
+26dBu balanced
input channel eq high freq +/-15dB frequency range
1kHz–20kHz
high-mid freq +/-15dB frequency range 400Hz–8kHz
low-mid freq +/-15dB frequency range
100Hz–2kHz
low freq +/-15dB frequency range 40Hz–800Hz
output features all group-outputs feature: compressor with threshold, ratio and gain controls—plus soft-knee and
downward expander/gate with adjustable threshold and ratio controls
linking between odd/even group-pairs preserves stereo-imaging and allows for ducking effects
main-outputs feature: five-band output eq:
high and low bands
left/right/mono
switchable high-pass filter—40Hz
adjustable RMS output-limiters with threshold control and eight-segment gain reduction meter
channel metering five-segment LED ladder with VU -type response—displays pre-fader signal level
top red- LED warns of impending overload anywhere within the channel, lowest green-
master metering thirteen mechanical VU -type meters with LED -illumination
eight-meters showing group-outs
three-meters showing main-outs (left/right/mono), and two dedicated solo-meters
signal generator pink-noise generator can feed the talk-back section
construction chassis is powder-coated 14-gauge galvanized steel with internal-bracing
modules are powder-coated 18-gauge galvanized steel with baked-epoxy screening
dimensions and weights see dimension-drawing
warranty one-year parts and labor—US and Canada only
© 2000 Crest Audio Inc. Crest Audio specification literature is available
in downloadable PDF format at our website
www.crestaudio.com
v. 1.1 4 / 10 / 00
modules
X-VCA
master module block
24 channels routed
>80dB
group module pair
Q variable 3.0–0.7
switchable to shelving
Q variable 3.0–0.7
Q variable 3.0–0.7
Q variable 3.0–0.7 switchable to shelving
stereo input module
response switches
—adj freq —adj freq and Q
three mid-bands
@ -24dB/octave
mono input module
LED shows signal-present
rear view X-VCA
Crest Audio reserves the right to make
improvements in manufacturing or design
which may affect specification.