VCM-88C
The VCA unit shall contain 8 independent voltage controlled
amplifier channels capable of 20dB of amplification as well as
75dB of attenuation. Each channel shall also have a limiter with
a wide-range of threshold level adjustment and a limiter active
indicator. Each channel shall have a balanced input and servo-
balanced output. Each channel shall have the ability to combine
unbalanced input and output connections.
The VCA unit shall provide a master level control and a master
sum output connector for the unit to function as a stand-alone,
remote controlled line mixer.
The VCA unit shall be remotely controllable digitally over a stan-
dard RS-232 serial cable. The VCA unit shall provide phantom
power the remote controller and receive data over at least 1000
feet of 24 gauge shielded twisted pair. The unit shall also have
a data reception indicator and a remote disable switch. The VCA
channels and master level shall also be remotely controllable by
DC voltages through a euroblock connector using standard linear
taper potentiometers. The VCA channels and master level shall
also be remotely controllable by a PC connected by a standard
serial port and cable using Ashly Protea System Software, AMX
or Crestron control software. The unit shall have internal patch-
ing capabilities to route individual channel’s input and output to
any channel.
The output noise at unity gain on each channel shall be less than
-94dBu unweighted over 20Hz-20kHz. The total harmonic distor-
tion shall be less than 0.03% at 0dBu.
Crosstalk between adjacent channels shall be less than 80dB
over 20Hz-20kHz.
The frequency response shall be flat +/-0.2dB over 20Hz-
20kHz. The VCA unit shall weigh no more than 9 lbs. net and
mount into 1 rack space (1.75”) of a standard 19” rack. The
power requirement shall be 100-240VAC, 50-60Hz at less than
30W. The unit shall be the Ashly Audio VCM-88C.
The remote controller shall control 8 channels plus the master
level using slide faders. Each channel and the master shall have
an on/off switch with an indicator light. There shall also be a
remote disable indicator that illuminates when the remote con-
troller has been disabled at the VCA unit. The remote controller
shall be phantom powered by the VCA unit so that no batteries
or AC line cords are needed while controlling the VCA unit over
1000 feet of cable. The remote controller shall have a low pro-
file for desk-top operation and must have provisions to be rack
mounted where two remote controllers will occupy no more than
two 19” rack spaces (3.5” high).
The data signal shall not have characteristics which would cause
digital crosstalk noise into adjacent microphone-level chan-
nels in a multichannel snake cable. This data crosstalk noise
shall be less than -110dB along 1000 feet of adjacent 150 ohm
microphone lines. The remote controller shall be available in a
desk-top/rack-mount version as well as a wall-mount version for
permanently installing into a standard 4-gang electrical box. The
desk-top/rack-mount remote controller shall be the model RD-8C
and the wall-mount remote controller shall be the model RW-8C.
Features:
• Eight Channels of Remote Level
Control
• Bi-directional Communication
• Non-volatile Memory of Level
Settings
• RS-232 Interface Connector
• PC Control Using Protea System
Software, AMX or Crestron Control
Software
• Digital Control Over Shielded Twisted
Pair Cable
• DC Remote Control Using
Potentiometers
• Internal Channel Patching for
Flexible Signal Routing and Matrixing
• Internal Channel Pass-Through for
Cascading Multiple Units in Parallel
• Signal Present LED’s On Each
Channel
• RD-8C, RW-8C Compatible
• Works With Any Mixer With Channel
Insert Points
• Master Sum Output Jack
• +20dB to -75dB Level Control
• Individual Limiter Threshold
Adjustment for Each Channel
•
Safety/Compliance: CE, RoHS
Technical Notes & Specifications
VCM-88C Eight Channel VCA Matrixing Level Controller
Architects Specications
