Okayo GPA-750 Operating Instructions Manual Download Page 2

Portable PA System

This compact portable PA system features a sturdy, lightweight injection molded cabinet. The system includes a high 
power 50W (RMS) amplifier and can be supplied with an MP3 compatible anti-skip CD player and up to two wireless 
microphone receivers. The in-built amplifier has balanced or unbalanced wired microphone inputs, plus line in and 
line out RCA connections. The radio microphone receivers are 96 channels (16 channels for frequency band at 
863-865MHz), allowing easy selection of non-interfering frequencies. Each receiver includes individual frequency 
adjustment and volume control. The system is supplied with in-built batteries and charging facility to provide 3-4 hours 
continuous use..The two way speaker system comprising an 8 inch woofer and high frequency horn ensures excellent 
sound quality for both music and speech reproduction.
Weighing only 12kgs it is truly portable allowing a wide range of use in schools, places of worship, clubs, auctions etc.
Sets up in just seconds for instantaneous use.

TX-701 Optional wireless audio link transmitter:

 For larger venues or audiences, the addition of this module allows 

several units to be used in the same area without the need for speaker or signal wiring. In this application you have a 
master and as many slave units as required for the venue. The wireless audio link module is fitted to the master unit 
which then transmits any audio signal (including wireless mic, CD player or wired mic) to the slave units, which are 
fitted with a UHF wireless microphone receiver adjusted to receive the signal from the wireless audio link.

DR-701 Optional UHF wireless microphone receiver:

 Installation of this module adds a second wireless micro-

phone to the Portable PA.

EM-750 Optional karaoke echo module:

 For karaoke applications this module includes adjustable repeat and delay, 

plus two local wired  6.35mm/XLR combo mic inputs.

Features

Operation

Compact design sets up in just seconds
Rugged lightweight cabinet
MP3 compatible CD player
Inbuilt carry handle
High performance 50W RMS amplifier
Built in backup battery
Optional radio microphone receivers
Suitable for desk or speaker stand mounting
Optional wireless audio link for cable free transmission to additional systems
Optional karaoke echo module
Provision for 8 ohm extension speaker
RCA line input / output
6.35mm / XLR combination wired microphone input
96 -264VAC mains or battery operation

Power & Charging Functions

The portable PA system is powered by 96 - 264V AC mains via IEC socket (see figure 2 for location) or via the internal
 battery pack. When operating for the first time the internal battery will require charging for up to 8 hours. Charging 
will occur whenever the unit is plugged into the 96 - 264VAC mains supply. The charge status indicator (shown in figure
 2) will illuminate red when charging. Once battery is 80-90% charged, the indicator will flash red and green. Once 
charging is complete, the indicator will illuminate green.

When in use without mains power, the LED built into the power switch provides indication of battery status:

100% to 30% capacity:

 no illumination

30% to 10% capacity:

 red illumination

<10% capacity:

 flashing red illumination

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Summary of Contents for GPA-750

Page 1: ...Microphone EJ 7LT EJ 7XT Bodypack Transmitter This operating guide also includes instructions for the following portable PA accessories DR 701 Additional UHF wireless microphone receiver TX 701 Wirel...

Page 2: ...are fitted with a UHF wireless microphone receiver adjusted to receive the signal from the wireless audio link DR 701 Optional UHF wireless microphone receiver Installation of this module adds a seco...

Page 3: ...s blanking panels fitted in the base models 2 CD MP3 player 3 Power switch charge indicator this panel is replaced when adding a wireless link or digital echo module 4 Level treble bass controls 5 Spe...

Page 4: ...ule Figure 5 Audio Link Transmitter Module 1 Track program button 2 CD slot 3 Shuffle repeat button 4 Play pause button 5 Stop eject button 6 Power switch 1 LCD screen 2 TX audio indicator 3 AF audio...

Page 5: ...To program specific tracks for palyback press the track program button Select the song you wish to program on the disc using the next track l and previous track buttons l Press repeat to enter the tr...

Page 6: ...via this module Master volume adjusts overall system level from all inputs ie UHF CD MP3 player RCA stereo input and wired microphones Treble and bass controls effect all system inputs When set to hal...

Page 7: ...panel All PA models feature a blanking panel with the system power switch mounted on it see figure 2 This panel is optionally replaced by the TX 701 or EM 750 modules Fitting EM 750 Digital Echo Modul...

Page 8: ...the power switch for 2 3 seconds until the LCD screen displays OFF 9 When using with rechargeable NiMH batteries connect a DC 5V plugpack to the charging port on the base of the microphone Charging ti...

Page 9: ...ED power indicator 7 Power switch 8 Charging port connection Figure 9 Bodypack UHF Wireless Transmitter EJ 7LT EJ 7XT 1 Antenna 2 Mute button top 3 On Off switch top 4 3 5mm or 3 pin XLR mic input soc...

Page 10: ...en will flash the currently selected channel number You can cycle through the channels by pressing the UP or DOWN frequency adjustment buttons Press the frequency set button again to lock in your chan...

Page 11: ...0 g Handheld Transmitter EJ 701TS Mic Insert Condenser or dynamic RF Output 10 mW Spurious Emission Less than 250 nW AF Controls Hi Low Mute switch Battery 1 2 V NiMH rechargeable x 2 or 1 5 V Alkalin...

Page 12: ...e for Long periods Ensure battery is charged once per month there after to ensure long life and optimum battery reliability Remove batteries from transmitter when not in use Ensure replacement batteri...

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