Power Dynamics 179.140-2Channel UHF, 179.143-4Channel UHF Instruction Manual

WIRELESS MICROPHONE SYSTEMS

179.140-2Channel UHF

179.143-4Channel UHF

Instruction Manual

Gebruiksaanwijzing

Gebrauchsanleitung

UK

Thanks for purchasing this product, please read this instruction carefully so that can understand
how to operate the product of style you bought correctly. Please store this instruction in a safe
place after reading as a reference in the future.

Warning

- Always read the manual before using the product.

- Keep the manual so every new user can read it before using the product.

- Always keep the packaging. When a malfunction occurs, please send it in the original

packaging.

- Only for indoor use. Do not use in moistures places.

- Don’t expose to direct sunlight or heat sources. Don’t block ventilation openings.

- Don’t let small objects or fluids enter the housing. Don’t put candles on it. This may cause

malfunction.

- Clean this unit with a dry cloth. Don’t use cleaning fluids or solvent.

- Unit contains no serviceable parts. Only the replacement parts named in this manual can be

changed by the user or servicing personnel.

- Never open the unit, service may only be done by qualified personnel.

- Never remove or place the mains plug in a socket with wet hands.

- Disconnect the unit from mains power before servicing.

- Condensation water can form while reusing, please let the unit reach the environmental

temperature before using it.

- Keep out of children’s reach.

- When the unit is damaged in a way that internal parts are visible. NEVER connect the unit to

a mains socket and NEVER switch the unit on. In this case, contact your supplier.

- When a lightning storm occurs, always disconnect this unit from the mains socket. Do the

same when the unit won’t or hasn’t be used for a long period of time.

- Using this unit might cause disturbance in insufficiently shielded equipment. This disturbance

might cause damage or accidents. Please check if there is any sensitive equipment in close
proximity of the unit before installing it.

FOREWORD

Your new series of wireless system is designed to give you the best of both sound reinforcement words, the freedom
of wireless system, and the excellent quality. This manual covers each of the series system.

Electric products must not be put into household waste. Please bring them to a recycling centre. Ask your local
authorities or your dealer about the way to proceed. The specifications are typical. The actual values can slightly
change from one unit to the other. Specifications can be changed without prior notice.

Do not attempt to make any repairs yourself. This would invalid your warranty. Do not make any changes to the
unit. This would also invalid your warranty. The warranty is not applicable in case of accidents or damages
caused by inappropriate use or disrespect of the warnings contained in this manual. Power Dynamics cannot
be held responsible for personal injuries caused by a disrespect of the safety recommendations and warnings.
This is also applicable to all damages in whatever form.

This product should licencefree be used in all EU countries!

SYSTEM

179.140 UHF 2ch wireless microphone system – 2 microphones – 2 antennas

179.143 UHF 4ch wireless microphone system - 4 microphones – 4 antennas

SYSTEM FUNCTIONS

Receiver:

1. Power switch to switch ON/OFF the system

2. Volume A: To control the volume of unit A

3. Volume B: To control the volume of unit B

4. RF: Radio frequency, channel signal strong or weak

5. AF: Audio indicator, channel audio signal strong or weak

6. ANT-A, receive signal from the transmitter microphone

7. ANT-B, receive signal from the transmitter microphone

8. Balanced A, symmetric XLR output for channel

9. Balanced B, symmetric XLR output for channel

10. Mix out: Output jack for both units

11. Access to 12-15Vdc

HANDHELD TRANSMITTER

Transmitter:

1. Grille: Protects the cartridge and helps reducing the breath sounds and wind noise.

2. Power-switch of transmitter

3. Power LED: Lights when transmitter is activated

4. Low Bat: When battery is low this LED flashes permanently. When activating the
transmitter the LED flashes shortly.

5. Audio Mute Switch.

6. Battery Cover: Open it to install the battery.

Specifications:

Dual channel Receiver:

Freq. range ................................................ 863-865MHz

Peak deviation ........................................... +/- 25kHz

Freq response ............................................ 60Hz – 18kHz

S/N ratio ..................................................... >105dB(A)

THD............................................................ <1%/1kHz

Temp. range ............................................... -10°C ~ 55°C

Transmitter:

Battery powered ......................................... 9V Batteries

Fixed channels
When transmitter-light glows green then replace batteries.

TROUBLESHOOTING:

Problem Solution
No sound: Status: receiver RF monitor
does not light up.

1. Check mic power switch is in “ON”
position.

2. Check mic/receiver is on/not on

3. Check antenna connection.

4. Check obstructions between mic
and receiver.

5. Check battery polarity.

No sound: Status: Both RF and AF are
displayed.

1. Check loudspeaker connection.

2. Check receiver volume knob is in
minimum position.

No sound: Status: RF display normal and
AF doesn’t work.

1. Check the cartridge of the mic.

2. Check power of the mic.

Noise or interference 1. Eliminate RF interferences

2. Check connection cords

3. Two mics use same frequencies

4. Check antenna position

5. Stay close to the receiver

6. Check polarity of the batteries

After shutdown the mic, the receiver has
noise

Adjust the receiver and antenna positions

again.-Eliminate RF interferences
Sound is occasionally weak Avoid “dead spots” – reposition receiver
Transmitter is not working at all Check the batteries