Nady Systems 401X Quad Manuel utilisateur

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

CONTENTS

Thank 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.

INTRODUCTION

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”

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

• Rubber, “easy-mount” mic clip included

WGT & WLTBodypack 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 converts your favorite XLR handheld or lavalier microphone to

wireless instantly

•Rugged construction and positivelocking connector for reliable performance

•Selectable phantom power and LO/HI audio input level

•Optional leatherette pouch with clip available for use as bodypack

SYSTEM FEATURES

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

from eachother. 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 fullycounterclockwise 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) mayneed 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 MUTE CONTROL (9) should be turned clockwise until the

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

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 dropouts or at the end of the operating distance range.

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 MIX AF OUTPUT (8)

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 VOLUME CONTROL (6).

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

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.

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 VOLUME CONTROL (6) on the 401X Quad clockwise to about 1/2

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 separate and independent XLR output channels,

it can be used with either one, two, three or four channels operating.Simplyturn your mixer

volume control of anychannel which you are not using to minimum. If the mix line out is

used, just turn down the 401X Quad receiver's volume controls.

OPERATION

401X Quad Front

16V AC/DC Adapter

401X Quad Back

Antennas

911

OPERATION

346

WHT Handheld Microphone Transmitter

1. Unscrew the BATTERY COMPARTMENT COVER (12) and remove, exposing the

BATTERY HOLDER (13).Insert a fresh 9V ALKALINE BATTERY (14), observing the

correct polarity as marked, and screw the cover back on to the microphone. Make sure the

cover is screwed on completely. A fresh alkaline battery can last up to 15 hours in use, but in

order to ensure optimum performance, it is recommended that you replace the battery after

every 10 hours of use.

2. Turn on the WHT by sliding the OFF/STANDBY/ON SWITCH (15) to the STANDBY

position (transmitter on, audio muted) or the ON position (transmitter and audio both on).

The BATTERY INDICATOR LED (16) will give a single quick flash, indicating usable

battery strength. In the case of a dead or low battery, the LED will either not go on at all or

will stay on continuously, indicating that the battery should be replaced with a fresh one. To

preserve battery life, turn the transmitter off when not in use.

3. The microphone is now ready to use. The TX LED INDICATOR (7) on the 401X Quad

receiver should now be lit, indicating a received signal from the transmitter. When ready to

speak, slide the transmitter switch to the ON position. Adjust the volume of the receiver as

per the Audio Output Microphone Connection section of the above 401X Quad receiver

instructions. The AF LEVEL LED DISPLAY (7) on the 401X Quad receiver will light up as

if the input signals are getting stronger. Occasional flickering on and off during use of the

LED indicator is normal. However, if the LED stays on continuously, it means the signal is

too loud and there is the possibility of overload distortion. If this occurs, back off from the

microphone until the red LED indicator only flickers on peaks.

[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so

that acoustic feedback (howling or screeching) will be avoided.]

[Note: Microphone elements can easily be destroyed by the buildup of salts and minerals

from perspiration and saliva. It is good practice to put a windscreen on the mic element at all

times to protect it.]

OPERATION

WLT Lavalier/Lapel or Headworn Microphone

Bodypack Transmitter

1. Snap open the BATTERY COMPARTMENT (17) and insert a fresh 9V BATTERY

(18), observing the correct polarity. Close the compartment.

2. The WLT is provided with a 3.5 mm LOCKING JACK (19) for connecting the

microphone. Plug in either the LAVALIER/LAPEL (20) or the HEADWORN

MICROPHONE (21), as supplied. To secure the connection, turn the metal slip ring on the

plug clockwise to thread it on to the jack. To unplug, reverse the process. Slip the

transmitter into a pocket or clip on to your clothes. To use the lavalier mic, attach it at chest

level. Do not place too close to the mouth – a distance of about six inches usually works

best. To use the headworn mic, place it on the head and adjust the mic boom so that the mic

is about one inch to the side of the front of the mouth.

(Note: The lavalier or headworn mic wire is also the transmit antenna, and rolling up or

shortening the wire may reduce the effective operating range. Extend the wire fully during

use and keep it as straight as possible.)

3. Turn on the WLT by sliding the OFF/STANDBY/ON SWITCH (22) to the STANDBY

position (transmitter on, audio muted) or the ON position (transmitter and audio both on).

The BATTERY INDICATOR LED (23) will give a single quick flash, indicating usable

battery strength. In the case of a dead or low battery, the LED either will not go on at all or

will stay on continuously, indicating that the battery should be replaced with a fresh one.

4. The microphone is now ready to use. The TX LED INDICATOR (7) on the 401X Quad

receiver should nowbe lit, indicating a received signal from the transmitter. When ready to

speak, slide the transmitter switch to the ON position and adjust the volume of the receiver as

per the Audio Output Microphone Connection section of the above 401X Quad receiver

instructions. The AF LEVEL LED DISPLAY(7) on the 401X Quad receiver will light up

as if the input signals are getting stronger. Occasional flickering on and off during use of the

LED indicator in this displayis normal, however if the LED stays on continuously, it means

the signal is too loud and there is the possibility of overload distortion. Re-position the

microphone farther from the source or adjust the AUDIO INPUT LEVEL CONTROL (24)

until the red LED indicator flickers only on the loudest inputs.

[Note: Observe care in selecting P.A. volume, transmitter location and speaker placement so

thatacoustic feedback(howling and screeching) will be avoided. Please also observe the

pickup patterns of the microphone selected: omnidirectional mics pick up sound equally from

all directions and areprone to feedbackif not used carefully. Unidirectional mics are more

resistant to feedback, but pick up sound sources best that are directly in front of the mic.

Also, mics that are farther from the sound source, such as lavaliers, require more acoustic

gain and thus are also more prone to feedback than close-source mics such as handheld or

headwornmics that are used close to the mouth.]

(Note: Microphone elements can easily be destroyed by the buildup of salts and minerals

from perspiration and saliva. It is good practice to put a windscreen on the mic element at

all times to protect it.)

OPERATION

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