New 70V Attenuators MVC-25,
MVC-50 & MVC-100
DECORA® Style 70V
Volume Controls/Attenuator
Basic Connections:
1) All speaker connections are in parallel whether the
speakers are “home run” individually back to the
amplifier; Option#1 or in a Daisy Chain configuration
from one speaker; Option#2 to the next making sure
they are connected in parallel.
Note: the 3 MCV Attenuators feature a convenient
through-output to easily connect the speakers in Daisy
chain configuration using the thru-put connection (by
passing the Transformer) of each Volume Control you
use in the chain.
2) The Common and 70Volt outputs of the Amplifier
connect to the Common and Input of each Attenuator
whether all are coming directly from the Amplifier in
“Home Run” or from the Attenuator to the previous
Attenuator in the “Daisy Chain”
3) The Common and Output of each Attenuator
connects to the Common and desired color coded
wattage wire on the Primary of the 70 Volt Transformer.
Or the Common and Output of each attenuator
connects to the negative (black) and Positive (red) for a
speaker with built in transformer. Then the wattage is
set with the selector switch (as featured in the images
to the left)
4) The 8 ohm secondary (output) wires on the
transformer connect to the speaker terminals
(Black-/Red+).
5) Then connect the Line or Auxiliary output from your
main mixer to the Auxiliary input on the Distribution
amplifier.
Option 1
Option 2
Transformer
Optional
Through
Output to
next
Attenuator
Input
from Amplifier
Output
to Speakers
Features and Specifications
DECORA style high-quality auto transformer provides advantages of excellent frequency response, low insertion loss
and reliable performance for volume control applications in 25 and 70 volt systems. Attenuation is accomplished in ten
make before break steps plus positive off position (no stop between maximum and off position to prevent switch
damage). The Attenuator features removable input/output terminal blocks, Two in, two out and two optional for
through output for daisy chain option. An attractive alternative to Commercial series attenuators mounts into most
single gang E.O boxes. UL Listed White, Almond and Ivory Plastic Plates with Matching Skirted Knobs in DECORA® Style
Power Ratings: MVC-25: 25W,
MVC-50: 50W & MVC-100: 100W
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