Nady 401X QUAD operating instructions

CONTENTS

Introduction ..........................................................................................................................3

System Features ....................................................................................................................4

Operation ..............................................................................................................................5

• 401X Quad Receiver ........................................................................................................5

• WHT Handheld Microphone Transmitter ........................................................................8

• WLT Lavalier/Lapel or Headworn Microphone ..............................................................10

• WGT Instrument Bodypack Transmitter ..........................................................................12

• LINK 2™ Plug-In Transmitter ........................................................................................14

Specifications ........................................................................................................................17

Service ..................................................................................................................................18

2

INTRODUCTION

T

hank you for purchasing a Nady 401X Quad VHF Wireless Microphone System and
congratulations on your choice. The 401X Quad VHF is by far the best price/performance
value available in multiple channel wireless systems. Please read the instructions in this
manual completely before operating your unit.

Using This Manual

This booklet provides instructions for the operation of the Nady 401X Quad four-channel
VHF wireless, including handheld, instrument, lavalier, headmic and plug-in transmitter
systems. Features of the 401X Quad are listed, followed by step-by-step instructions
explaining how to operate your new system. After reading the receiver instructions, turn to
the section of the booklet that covers the type of transmitter used with the system you have
purchased. Each section will give you detailed operating instructions. Also included in this
manual are system specifications and servicing information.

3

SYSTEM FEATURES

401X Quad Receiver

• Four independent VHF receivers in one convenient, rugged, all-metal single rack space
housing – makes operating 4 wireless systems at the same time easier than ever

• Front-mount dual antenna jacks for either onboard or remote antennas

• Front panel Power ON/OFF switch, plus Power ON LED, TX ON and AF signal level
LED displays

• Rear panel individual XLR AF Output jacks, volume and RF mute controls for each of
the 4-channels, and 4-Channels-Mixed AF Out 1/4” phone jack

• Noise-free transmitter ON/OFF operation

• High performance – unmatched transparent audio with 120 dB dynamic range and up to
250+ feet optimum line-of-sight operation

WHT Handheld Microphone Transmitter

• Features the Nady DM -10D unidirectional neodymium dynamic cartridge for optimum
true sound, maximum feedback rejection and minimal handling noise

• OFF/STANDBY/ON switch allows convenient audio muting with the transmitter “ON”

• Low battery LED indicator flashes once for unit “ON”; lights steady for low battery alert

• Rubber, “easy-mount” mic clip included

WGT & WLT Bodypack Transmitters

• Choice of instrument (WGT-15) or headworn/lavalier microphone (WLT-15) bodypack
transmitter

• OFF/STANDBY/ON switch allows convenient audio muting with the transmitter “ON”

• Low battery LED indicator flashes once for unit “ON”; lights steady for low battery alert

• Locking 3.5mm mini-jack provides secure connection for removable microphone or
instrument cable

• Easily accessible input level adjust control for optimum sound

LINK 2™ Plug-In Transmitter

• Plug-in transmitter conver
wireless instantly

• Rugged construction and positive locking connector for reliable performance

• Selectable phantom power and LO/HI audio input level

• Optional lea

therette pouch with clip available for use as bodypack

ts your favorite XLR handheld or lavalier microphone to

4

OPERATION

401X Quad Receiver

1. Powering the Receiver

Plug the 16V AC/DC ADAPTER (1) provided into the DC INPUT JACK (11) on the back
of the receiver. Then plug the power supply into an AC outlet.

(Note: Any 16V DC source with 800mA capability can also be used.)

Turn VOLUME CONTROL (6) for all four channels counterclockwise to mimimum located
on the front of the receiver. Once the receiver is connected to a power source, press the
POWER SWITCH (3) to ON position. The POWER ON LED (4) indicator will light up.
The

TX LED INDICATOR (7) on the front panel of the receiver will not light up until one

or more of the four channels is receiving a signal from your system’s transmitter.

2. Antennas

The ANTENNAS (2) assembly consists of two antennas. Connect antennas into the
ANTENNA JACKS (5) on the front of the receiver. Extend the antennas fully to obtain

maximum range. Position
from each other. For maximum range, it is always best to maintain a line of sight (no
obstructions) between the receiver antennas and the transmitter whenever possible.

3. Mute (Squelch) Adjustment

In normal operation, the MUTE CONTROL (9) should be set fully counterclockwise to the
factory preset minimum RF level of 1µV for maximum sensitivity. Doing so sets each
receiver for maximum range. However, in areas of high RF activity, the mute (or squelch, as
it is sometimes called) may need to be adjusted to compensate for the adverse conditions in a
particular location. If, with the transmitter off, its corresponding LED on the receiver front
panel flickers or stays on, the

xtinguishes. For each of the four channels, when the Mute is properly adjusted, the

LED e
corresponding LED will light only when the system’s transmitter is turned on. Turning the
MUTE CONTROL (9) too far clockwise will result in reduced range, but yield a quieter
signal during dr

opouts or at the end of the operating distance range.

ANTENNAS (2) at 45 degrees from the horizontal; 90 degrees

MUTE CONTROL (9) should be turned clockwise until the

5

OPERATION

5. Connecting the Audio Output

The output stage of each channel and the separate four channels mixed output of the 401X
Quad are all configured for adjustable unbalanced LINE and fixed balanced XLR line or
microphone audio outputs. The adjustable unbalanced 1/4" mix out is a low level LINE with
an output impedance of 600 ohms. The individual fixed level balanced XLR out can be
configured as high level line out with 11k ohms output impedance or microphone level out
with a 600 ohms load impedance.

For each channel you wish to use, insert an audio cord with a balanced female XLR plug into
its

AF OUTPUT (10) jack on back of the receiver. Plug the other end of each cord into your

amplifier, effect or mixing board. Adjust volume on your mixing board so that no audio
distortion in present when amp or mixer is set at its usual level.

[Note: To prevent possible undesired noises during use, leave the volume controls of unused
channels, (which the corresponding transmitter off) turned off in the amp or mixer. The audio
should only be "live" if the transmitter is on.]

If you want to use the 401X Quad as it own mixer (your amplifier, effect or mixing board
should have 12dB or more gain select on), you can connect to the
which provides a mixed line output of up to all four channels, with the relative volume of
each channel in the mix determined by that channel's

a. Instrument Connection (using the WGT instrument transmitter)

Insert an audio cord with a 1/4" mono phone plug in the AF OUTPUT JACK (8) on the
rear panel of the receiver. Plug the other end of the cord into amplifier, effect or mixing
board. Adjust the
rotation until the volume level is comfortable for your application. This setting is roughly
equivalent to direct instrument cord connection. Turning the volume up to maximum will
provide 4dB gain over a cord.

VOLUME CONTROL (6) on the 401X Quad clockwise to about 3/4

VOLUME CONTROL (6).

MIX AF OUTPUT (8)

b. Microphone Connection (using the WLT transmitter with either a headset or
lavalier microphone or the WHT handheld microphone transmitter)

Insert an audio cord with a 1/4" mono phone plug in the AF OUTPUT JACK (8) on the
rear panel of the receiver. Plug the other end of the cord into amplifier, effect or mixing
board. Adjust the
MAX and adjust the volume control until the volume level is optimal. If the volume
control is set too high, you may overload your mixer or amp.

Since your 401X Quad is comprised of four se
it can be used with either one, two, three or four channels operating. Simply turn your mixer
volume contr
used, just turn down the 401X Quad receiver's volume controls.

VOLUME CONTR

ol of any channel which you are not using to minimum. If the mix line out is

OL (6)

on the 401X Quad cloc

parate and independent XLR output channels,

6

6

kwise to about 1/2