Galaxy Audio DHT User Manual

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Contents

System Components.........................................1

DHT Receiver Features.....................................2

HH76 Handheld Transmitter...............................3

MBP76 Body Pack Transmitter...........................4

System Setup.....................................................5

Setting Up Multiple Receivers.............................6

Rack-Mounting the Receivers............................7

Troubleshooting .. .. .. .. .. .. .. .. .. .. .. ........................8

Specifications....................................................9

Introduction

Thank you for choosing the Galaxy Audio DHT Wireless Microphone System. You have joined hundreds of thousands of other satisfied Galaxy customers. Since 1977 Galaxy Audio’s professional experience in design and manufacturing ensure our products quality, performance and reliability.

For the most up-to-date manual and information

visit www.galaxyaudio.com.

Frequency Band

Most countri es closely regulat e the rad io f requenc ie s used in the tr ansmiss io n of wire le ss inf or mation. Th es e regu la tions st ate wh ic h devise s can u se which frequen ci es, and help to li mi t th e am ount of RF (radio fre qu ency) inter fe rence in all wire le ss comm un ication s. The DH TR QUAD o ff er s 12 0 select ab le c ha nnels wi thin e ither the 58 4607M Hz ( Code D) or 65 5- 679MHz (C od e L) freque nc y ranges.

To fa cilitat e syst em setup and protect again st RF interf er ence, ea ch s ys tem co mes wi th m u l t i p l e p r e d e f i n e d f r e q u e n c y g r o u p s a n d c h a nn e l s . W h e n u s i n g a s i n g l e rece iv er/tran sm itter, t he oper at ing fre qu ency wi ll gene ra lly n ot have t o be ch an ged. In an in st allatio n w ith mu lt iple rec ei vers/tr an smitters, each set mu st opera te on a se pa rate chan ne l from th e o thers. The gr ou p and chann el system p ro vides an op timum fr eq uency spre ad w hen using m ul tiple rec ei ver/tra ns mitter sy st ems.

Functions of the DHTR Receiver

DHTR Recei ver Features

Fron t Panel

2 3 4 5 6 7 8

1 10

Infrared ( IR ) Wi nd ow.

Antenna A in di ca to r li gh t.

Indicate s wh en An te nn a A is act iv e .

Antenna A RF s tr en gt h in di ca tor.

Antenna B RF st re ng th i nd ic at or.

Antenna B indicato r li gh t. Indicates when Ant en na B i s ac ti ve .

Audio Signal re ce iv ed i nd ic at or.

LCD Screen .

See: System Setup o n Pa ge 8 .

Rear P anel

ASC Sync Butt on .

Press to initiate I R co nn ec ti on b et we en receiver and tran sm it te r.

System Men u Do wn B ut to n.

See: System Setup o n Pa ge 8 .

System Men u Up B ut to n.

See: System Setup o n Pa ge 8 .

System Set up B ut to n:

See: System Setup o n Pa ge 8 .

On/Off S wi tc h.

1 2 3 4 5 6

Antenna Jack B 50 ohm.

XLR Output Jack.

¼" Output Jack.

Mute Threshold Fine Adjustment.

This is set at the factory and usually does not need to be adjusted. If interference signals are received, this threshold value may be increased by turning the knob clockwise until the RF signal lamp goes out.

DC Power Input Connector.

Antenna Jack A 50 ohm

HH64/HH64SC Handheld Transmitter

Functions:

Super Cardioid with Condenser Element

Cardioid Dynamic Element

LCD screen

Please See “system setup ” on page 7.

Power Switch

Microphone Input Sensitivity Control.

Left turn for output level decrease, right turn for output level increase.

IR port Receivers infrared beam to synchronize frequencies.

Bottom of Handheld

Battery Replacement

Batteries should be replaced when LCD indicator flashes. Unscrew the battery cover as shown below. Install two AA alkaline batteries, while observing correct polarity indicators in the battery tray. Expected life for two AA alkaline batteries is about 8 hours.

OPEN

MBP76 Body Pack Transmitter

Features

Antenna.

select

LCD panel. Pleas e see (S ystem Setup) on Page 8.

Power/ASC/ Low Battery Indicato r. Const ant Gr een: Power ON.

Flash ing Gr een: IR ASC in progress, or Low Batteries.

Mute Indicator.

Constant Red: Audio Muted.

Power/Mute Button.

Push and Hold for Power On/Off. Push once for Mute On/ Off.

IR Window. Recei ves IR s ignals (ASC) to synchronize with Receiver.

Select Button. Please see (System Setup) on Page 8.

3-pin Microphone Input Jack.

Gain Adjustment Switch.

Three gain settings are av aila ble. Choose the appro pria te setting for your application: Mic: Mi crop hone 0dB: Gu itar w ith passive pickups

-10dB : Guit ar with active pickups, or Line Level Signa ls.

Note: To prevent accidental power or mute c hang es during a performance, you may set the L ock fu nction by a simultaneous press and release of butto ns 5 and 7. This will disable all buttons and a “lock” icon wi ll appear in the LCD. Repeat procedure to return to no rmal o peration.

Wearing the B ack Pack Transmi tter:

Clip the transmit te r to a b el t . Fo r be st r es ul ts, slide the

transmitter dow n un ti l th e be lt i s pr es se d ag ainst the base of the clip. Or, slide a g ui ta r st ra p th ro ug h th e tr ansmitter

clip ,as shown.

Changin g batterie s:

Expected life for Tw o Alk al in e ba tteries is approxim at el y 6 ho ur s. Replace batteri es w he n th e Gr ee n Po we r LE D an d the LCD

Ope n

Clo se

Battery Indicat or ( sh ow n be lo w) b eg in t o bl ink.

GROU P CH ANNEL

SCAN

System Setup

Recei ve r Progr a mmin g

FREQ

Group and Channel Selection: Press and Hold the SET button. The

Group number will flash. Press or to choose the appropriate frequency group, as shown on the left ; press (SET) again , (CHANNEL) flashes, press or to choose the appropriate channel, as shown on the left .

For best results when operating multiple systems, set all systems to a single group: then set each system to a unique channel within that group.

Receiver Volume Setting:

The receiver has an electronic volume control. When in the normal display, press or to control the output volume (64 steps total) as shown at

left.

Normal Display:

Volume and Frequency, as shown at left . LED columns to the left of the LCD display show RF & AF Levels.

Automatic Transmitter Setup:

Once the desired channel is set on the Receiver, you may allow the Transmitter channel to be set automatically. Note: only one Transmitter may used with each Receiver.

Turn on the Transmitter. Position the Transmitter IR window directly in front of the Receiver IR window. The IR window of the MBP76 Body Pack is located under the battery door while the IR window of the HH64 Handheld is located at the bottom end of the mic body. Press the ASC Button on the Receiver. The ASC Icon will flash in the Receiver LCD. The RF Meters will light when the synchronisation is complete. The Group and Channel number of the Receiver should now be displayed in the Transmitter LCD. With the HH64 turn on the transmitter after pressing the ASC button.

Note: The Transmitter must be within half a meter distance from the Receiver during IR ASC automatic channel setting.

Handheld Transmitter

Body Pack Transmitter

HH64 and MBP76 Transmitter Status Display

Battery Status:

Battery Status Indicators for both the Handheld and Body Pack Transmitters feature Four Level Displays as shown in .

Group and Channel Display:

After completing the ASC, both the Handheld and Body Pack Transmitters will display the Group and Channel numbers selected as shown in .

Normal Display:

Both Handheld and Body Pack Transmitters will display Group and Channel numbers as well as Battery Status as shown in .

Setting up multiple receivers

Using the auto scan function to find clear frequencies for your DHT System

1) Power on any pre-existing wireless systems and transmitters except the first DHT system.

2) Power on the first DHT Receiver.

3) The Control and set buttons are on the front of the receiver.

4) Press the set button until the group number flashes on the LCD screen

5) Press the up/down buttons to select group 1.

6Press the set button twice to get to the scan mode.

7) Press the up or down button. The unit will now go into scan mode. You will probably see the RF meters light up if the scan sees other transmitters.

8) When it stops scanning, it will stop on the clearest frequency, and will be flashing the frequency on the LCD screen.

9) Press the set button and it will set itself to that frequency. Do not wait to press the set button as the DHT Receiver will revert back to the original frequency, and the process will need to be restarted

10) If the unit cannot find a good frequency within group 1, start the process again scanning group 2, if that is also not clear try group 3, and so on till you get a good frequency.

When the DHT Receiver has been set to a clear frequency, use the ASC feature to sync the receiver frequency to the transmitter.

11) Turn the transmitter on, aim the red infrared window on the transmitter towards the one on the receiver and press the ASC button on the front of the receiver. The transmitter will sync to the receivers frequency.

If you have more DHT systems to tune follow the same procedure on each one, always leaving the previous system transmitter on.

Rack-Mo unting the R eceiver

BNC CONNECTOR & CABLE: For front mounting antenna to rack ears. Part# AS-EXT50/BNC (optional)

Rack Shelf for moun ti ng Two Re ce iv er s si de b y si de MRTD/P/T (optio na l)

Rack Mounting

Included Single R ac k Ea rs

Troubleshooting

Tips for Impr oving Syst em Pe rformanc e

Maintain a line of sight between tran smit ters and antennas.

Avoid p laci ng the receiver near metal surfaces or any di gita l equipment (CD players, computers, etc).

Keep the receiver away from the wall an d at lea st 1m from the ground.

Cellular telephones and two-way radio s can interfere with the operation of wireless sy stem s.

Do not use these devices in close proxi mity t o the wireless systems.

Troubles hooting

Issue Indicat or S ta tu s So lu ti on

No sound or faint sound.

Distortion or unwanted noise.

Distortion leve l increases gradu al ly.

Sound level diffe re nt from cabled guita r or microphone, or wh en using diffe re nt g ui ta rs .

Tra ns mi tt er LCD off.

Receiver LCD off. Make sure AC adapter i s se cu re ly

Receiver indica te s RF. Increase receiv er v ol um e.

Receiver indica te s No R F, Transmitter LCD is o n.

The b at te ry p ow er i nd ic at or light on LCD flashe s.

Receiver Indica te s RF.

Transmitter powe r in di ca to r light flashing on t he L CD .

Turn on transmitte r. Make sure the batte ri es a re i ns ta ll ed correctly.

plugged into elec tr ic al o ut le t an d in to DC input connecto r on r ea r pa ne l of

receiver.

Make sure Gain adju st me nt s wi tc h on the transmitter i s se t co rr ec tl y (a pp li es only to MBP76 Body Pa ck .)

Make sure Transmit te r an d Re ce iv er are set to the same fre qu en cy. Make sure Transmit te r is i n ra ng e of Receiver. Make sure no large me ta l ob je ct s ar e near Transmitter o r Re ce iv er.

Change the batter ie s in t ra ns mi tt er.

Remove nearby sou rc es o f RF i nt er ference (CD playe rs , co mp ut er s, in-ear monitor sy st em s, e tc .)

Replace Transmit te r ba tt er ie s.

Adjust Transmitte r Ga in a nd R ec ei ve r Volume as necessar y.

Specifications

System

Frequency Range: CODE D 584~607 MHz CODE L 655~679MHz

Transmitter Output level: 10 dBm Band: UHF

Operating Range Under Typical Conditions: 300' Note: actual range depends on RF signal absorption, reflection, and interference.

Audio Frequency Response: (+/-3dB)

60Hz~16KHz

Total Harmonic Distortion (+/-30KHz deviation， 1KHz tone): <1%

Dynamic Range: >90dB A-weighted

Operating Temperature Range:

14ºF to 122ºF (-10º C to +50º C)

Note: battery characteristics may limit this range:

Receiver:

Audio Output Level: (+/-30KHz deviation, 1KHz tone)

XLR connector (into 600 ohms load) -12dBV ¼" connector (into 3K ohms load) -18dBV

Output Impedance: XLR connector 200Ohms ¼" connector 1K ohms

XLR output: Impedance balanced Pin1：Ground (cable shield) Pin2：Audio Pin3：No Audio

Sensitivity: -93dBm for 30dB

Image Rejection: >90dB

Dimensions: 1.7" x 8.3" x 6.3"

(44mm H x 212mm W x 160mm D)

Weight: 31.75oz (900 g)

Power Requirements:

12-18 V dc at 400mA, supplied by external power supply.

Body Pack Transmitter:

Max Audio Input Level:

0 dBV maximum at mic gain position. +10 dBV maximum at 0 dB gain position. +20 dBV maximum at 10 dB gain position.

Gain Adjustment Range: 30dB

Input Impedance: 470K ohms

Dimensions: 3.5" x 2.6" x 1"

(89mm H x 65mm W x 24mm D)

Weight: 3.0oz (85 g) (without batteries)

Power Requirements:

2 “AA” alkaline or rechargeable Batteries batteries

Battery Life:

About 6 hours

Handheld Transmitter:

Max Audio input level: 0dBV

Dimensions: 9.5" x 2.1" dia.

(242mm x 54mm dia.)

Weight: 10.6oz (300 g) (without batteries)

Power Requirements: 2 “AA” size

alkaline or rechargeable batteries

Battery Life: About 6 hours

WARRANTY Information can be viewed online at

http://www.galaxyaudio.com/warranty.php

Specifications in this manual are subject to change without notice.

For the most up to date manual and information

visit www.galaxyaudio.com.

1-800-369-7768 www.galaxyaudio.com

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Galaxy Audio DHT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual