The QXPA Portable PA Units, available as models QX12PA (178.853UK) and QX15PA (178.856UK), are versatile portable PA systems designed for a wide array of applications, from public address to outdoor karaoke. These units feature Bluetooth (BT), True Wireless Stereo (TWS), and VHF wireless microphone capabilities, all housed in a compact and manageable enclosure.
Function Description:
The QXPA units are self-contained portable PA systems with integrated media players, offering playback from various sources including USB, SD/MMC cards, FM radio, and Bluetooth. They come equipped with two VHF handheld wireless microphones for untethered vocal performance or speech. Additionally, the units provide inputs for wired microphones or guitars, and auxiliary line inputs for connecting external audio devices. A "Talk Over Ctrl" feature automatically mutes music playback when a microphone signal is detected, allowing announcements to override music. The internal battery provides portability, and the unit can also be powered from mains or an external 12Vdc supply.
Important Technical Specifications:
- Models: QX12PA and QX15PA
- Main Driver:
- QX12PA: 300mm (12")
- QX15PA: 380mm (15")
- HF Driver: 25mm (1") Titanium compression driver
- Amplifier Output: 50 + 50Wrms
- Wireless Mic. Frequencies: 174.1MHz + 175.0MHz
- Dimensions (H x W x D):
- QX12PA: 565 x 345 x 325mm
- QX15PA: 675 x 420 x 395mm
- Weight:
- QX12PA: 12.8kg
- QX15PA: 18.1kg
- Power Supply: 220-240Vac, 50/60Hz (IEC) / external 12Vdc / internal battery
- Battery Life: Up to 8 hours
- Inputs: 2 wired mic (jack) and aux (RCA & 3.5mm)
- Bluetooth Version: 2.1
- Dispersion: 90° x 60° (H x V)
Usage Features:
- Powering Up: Ensure VOLUME, ECHO, VHF, and MIC VOLUME controls are down before switching on. BASS and TREBLE controls should be at the 12-o-clock position.
- VHF Wireless Microphones:
- Insert AA batteries, observing polarity.
- Connect and extend antennas at an angle.
- Turn up volume control on the mic to switch on; RF LEDs should light.
- Adjust VHF volume controls on the unit.
- ECHO control adds a pre-set echo effect.
- BASS and TREBLE controls adjust tone.
- CONTOUR control adjusts the mid-tone character of the microphones.
- Switch off mics when not in use.
- External Inputs:
- 6.3mm jack inputs for wired microphones or guitars (governed by MIC VOLUME).
- Mic 1 input can accept a guitar.
- "Talk Over Ctrl" button automatically reduces media player volume when microphone sound is detected.
- Internal Media Player:
- Modes: Select between Aux, USB, SD, FM tuner, or Bluetooth using the MODE button.
- USB/SD Player: Insert a USB stick or SD/MMC card with MP3 or WMA files. Use PLAY/PAUSE, PREVIOUS, and NEXT buttons for control. EQ button cycles through preset tonal profiles. REPEAT button toggles between "RPT ONE" (current track) and "RPT ALL" (all tracks in folder).
- Recording: Press REC to record all inputs to inserted media in .wav format. Press Play/Pause to pause/resume, and REC to stop.
- FM Tuner: Press MODE to switch to FM tuner. Press and hold PLAY/PAUSE for 3 seconds to scan and store stations as presets. Use PREVIOUS and NEXT to select presets.
- Bluetooth Connection: Select Bluetooth mode on the media player. Enable Bluetooth on your smart device and scan for "PA SYSTEM." Pair and connect. Playback controls (PLAY/PAUSE, PREVIOUS, NEXT) also control the sending device. Bluetooth range is 5-8m.
- True Wireless Stereo (TWS):
- Switch OFF smart phone Bluetooth (for first pairing).
- Switch ON both QXPA units, select BLUETOOTH mode on both.
- Press and hold PLAY key for 3 seconds on the master unit.
- Units will pair (one left, one right channel).
- Switch ON smart phone Bluetooth and connect to the master unit.
- Bluetooth playback will be in stereo through both units.
- Remote Control: An infra-red remote control is provided for the USB/SD player, offering additional functions. Remove the plastic tab to activate the battery and point towards the media player display.
Maintenance Features:
- Charging the Battery: When connected to mains and the POWER switch is off, the internal battery recharges. The CHARGE LED will be orange during charging and turn green when fully charged.
- Storage: Store the PA unit at ambient temperature and avoid storing with a fully discharged battery.
- Safety:
- Read the manual carefully before operating to avoid damage and invalidate warranty.
- Do not expose to rain or moisture.
- Do not remove the cover; no user-serviceable parts inside. Refer servicing to qualified personnel.
- Ensure correct supply voltage and good mains lead condition.
- Avoid ingress of water or particles.
- If mains or D.C. fuse blows, refer to qualified service personnel.
- Remove batteries from VHF microphones if unused for long periods.
- Place the unit upright, away from direct sunlight, heat sources, moisture, or dusty environments.
- THIS UNIT MUST BE EARTHED.
- Cleaning: Use a soft cloth with a neutral detergent to clean the cabinet, panel, and controls. Do not use solvents.
- Troubleshooting: The manual provides a table for common issues like no output, no VHF output, music cutting out, or media player issues, with corresponding checks (e.g., check power switch, battery, mains lead, fuses, microphone batteries, Talk Over switch, media files, connections, volume controls).
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