Owner's Manual

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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

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

Summary of content (2 pages)

PAGE 1
New 70V Attenuators MVC-25, MVC-50 & MVC-100 DECORA® Style 70V Volume Controls/Attenuator Basic Connections: Output to Speakers Transformer Input from Amplifier Option 1 Optional Through Output to next Attenuator 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.
PAGE 2
New MVC-25 70V, MVC-50 70V & MVC-100 70V Each Kit includes color matched White, Almond and Ivory outer plate, DECORA® insert and rotary knob DECORA® Style 70V Volume Controls/ Attenuator 10 Step, 33dB Plus Full Off Power Rating: The MVC are rated at 25W, 50W and 100W so the speaker connected to it needs the transformer setting to be equal to or less than the rated watts of each MVC.