Protech MX411 User Manual

®

PROTECH

1/05

INSTALLATION & OPERATION

MANUAL

MX411 VOICE ACTIVATED RELAY

WWW.PROTECHAUDIO.COM

All Quicktrack products use a consistent ground scheme. The MXT-1 power supply provides the
necessary ground conductor. Power supplies without the 3rd conductor ground should not be used
with Quicktrack products.

CAUTION: Do not plug power supply into AC receptacle until the secondary conductors have been
attached to the Quicktrack module. Doing so may cause the power supply conductors to short and
damage the supply.

Installion steps for the Quicktrack modules are as follows;

1- Remove the cover screw (All modules except MX410) and cover.
2- Press down on the lower edge of the Quicktrack mounting extrusion until the lower edge of the
printed circuit assembly comes free.
3- Slip the printed circuit assembly out of the upper edge of the mounting extrusion.
4- Mount the Quicktrack mounting extrusion in an appropriate location, away from moisture, heat
sources, and AC fields.
5- Connect all audio connections to the barrier connector using double conductor shielded cables
designed for low level audio signals. Do not use multiple solid conductor cables.
6- Connect the 3 power supply conductors to the power supply connection points on the barrier
connector.
7- Plug the power supply into an AC receptacled.
8- Check for proper illumination of the LED power indicator.
9- Adjust all audio levels as necessary.
10- Mount the cover onto the Quicktrack module being careful not to over-tighten the mounting
screw.

Phantom

1

2

25/70V PAD

Relay Controls ­Threshold and
Dropout Delay

All initial adjustments on the MX411 are made at the factory. If after installing the unit higher or lower output
levels are desired follow the these steps.
Adjust audio levels for desired output before adjusting.
Next adjust threshold and delay trimpots for desired triggering and dropout delay.

Protech Audio Corporation, PO Box 597, 192 Cedar River Road, Indian Lake, New York, 12842, Voice 518-648-6410 Fax [phone]

+15V

M

L

MODEL MX411

S

L

The Model MX411 has one mic input, and one line input,
mixed to a common signal, and sent to the output. Both
inputs have adjustable gain. The mic input has a push­on jumper for internal 15 volt phantom power. The line
input has a switchable pad to allow either st andard line
level signals (0dBv Ref.), or 25/70 Volt signals.
The threshold and the dropout delay for the relay are
adjustable. Audio signals entering either input can be
used to activate the relay.
Both inputs and the output are electronically balanced.
The output may be used in either a balanced or
unbalanced configuration. Requires low voltage AC power
(See MXT-1).

PROTECH

WWW.PROTECHAUDIO.COM

®

9/02

INSTALLATION & OPERATION

MANUAL

MX411 VOICE ACTIVATED RELAY

18

VAC

ALL

QUICKTRACK

PRODUCTS

USE

CONSISTENT

GROUNDING

SCHEMES

AND

PACKAGING

18

VAC

G
N

NO COM NC

D

RELAY

NO COM NC

CONNECTIONS

3.375"

FUSE

POWER ON INDICATOR

RELAY

LONGER

DELAY

GROUND LIFT

POWER RELAY OUTPUT INPUTS

LINE OUT

N
C

4.5"

LOWER

THRESHOLD

PAD

N
C

MORE

IN
OUT

- +

GAIN ADJUSTMENTS

LINE IN

- +

MIC IN

N
C

MOUNTING

HOLES

PHANTOM
POWER

- +

1.0"

POWER FROM

MXT

TRANSFORMER

RED - AC
BLACK - AC
GREEN - (GND)

UNBALANCED LINE INPUT

CONNECTION

HI
LO
SH

BALANCED LINE INPUT

CONNECTION

HI
LO
SH

UNBALANCED LINE OUTPUT

CONNECTION

HI
LO

SH

BALANCED LINE OUTPUT

CONNECTION

MICROPHONE INPUT

CONNECTION

HI
LO
SH

HI
LO

SH

Protech Audio Corporation, PO Box 597, 192 Cedar River Road, Indian Lake, New York, 12842, Voice 518-648-6410 Fax [phone]