Crest Audio X-Four - How to Use This Manual; Conventions

v. 1.0 1/24/00
Crest Audio specification literature is available
in downloadable PDF format at our website
www.crestaudio.com
©
2000 Crest Audio Inc.
Crest Audio reserves the right to make
improvements in manufacturing or design
which may affect specification.
X-Four
modules
specifications
master module block
group module
stereo input module
mono input module
rear view X-Four
+0/-1dB 20Hz–20kHz ref 1kHz—any input to any output
any output <.01%
THD 20Hz–20kHz @ +15dBu out
mic ein better-than -128dBu 20Hz–20kHz—150 ohm source, 60dB gain
bus output noise less-than -80dBu—output fader
@ 0dB, 24 channels routed
residual output noise less-than -90dBu—output fader at minimum
channel mute >80dB channel routing >80dB
channel fader attenuation >90dB aux send attenuation >75dB
< +/- 30 degrees,
20Hz–20kHz—mic-in to main-out
mic-in
XLR 4k ohm balanced—max voltage gain to left/right balanced out
=
98dB
line-in
TRS >10k ohms balanced
left/right/mono—group, aux, matrix—monitor-out
all 100 ohms balanced
headphones to drive > eight-ohms
send 50 ohms ground-compensated on TRS jack
return >10k ohms balanced on
TRS jack
+4dBu max level
+26dBu balanced into >1k ohms
high freq +/-15dB shelf at
12kHz
hi-mid freq +/-15dB bell freq range 400Hz–8kHz Q=1.5
low-mid freq +/-15dB bell freq range 80Hz–2kHz Q=1.5
low freq +/-15dB bell-boost /shelf-cut freq center
80Hz Q=.7 on boost
high-pass filter -12dB/octave at
80Hz
separate on-switches for eq and high-pass filter
aux and matrix eq high freq +/-15dB shelf at
12kHz high-mid +/-15dB bell freq range 400Hz-8kHz, Q=1.5
low-mid +/-15dB bell, freq range 80Hz–2kHz, Q=1.5 low freq +/-15dB shelf at 100Hz
high-pass filter -12dB/octave at 80Hz separate on-switches for eq and high-pass filter
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-LED shows signal-present
seven 15-segment
LED ladders shows main output-levels two-additional LED ladders monitor the stereo solo bus
pink-noise generator can feed the talk-back section
chassis is powder-coated
14-gauge galvanized steel with internal-bracing
modules are powder-coated
18-gauge galvanized steel with baked-epoxy screening
see dimension-drawing
five-years
frequency response
THD
noise
crosstalk
phase shift
inputs
outputs
insert
nominal output level
input channel eq
output features
channel metering
master metering
signal generator
construction
dimensions and weights
warranty