1. Einleitung
The NBVOICE PRX ONE is a professional-grade 15-inch Stage PA Speaker System designed for high-performance audio applications. This system delivers 2400W peak power and crystal-clear 131dB audio, suitable for venues up to 5,000 sq.ft. Featuring a 15-inch subwoofer, proprietary ArrayShade technology, Bluetooth DSP control, and a road-ready birch enclosure, it ensures exceptional sound quality and durability. This manual provides essential information for the safe and effective setup, operation, and maintenance of your NBVOICE PRX ONE system.
2. Sicherheitshinweise
Bitte lesen und verstehen Sie alle Sicherheitshinweise, bevor Sie dieses Produkt in Betrieb nehmen. Bewahren Sie diese Bedienungsanleitung zum späteren Nachschlagen auf.
- Stromversorgung: Connect the unit only to a grounded AC power outlet of the correct voltage.
- Belüftung: Sorgen Sie für ausreichende Belüftung rund um das Gerät. Blockieren Sie keine Belüftungsöffnungen.
- Feuchtigkeit: Do not expose the unit to rain or moisture. Avoid placing liquid-filled objects on the unit.
- Hitze: Halten Sie das Gerät von Wärmequellen fern.
- Wartung: Überlassen Sie alle Wartungsarbeiten qualifiziertem Servicepersonal. Versuchen Sie nicht, dieses Produkt selbst zu reparieren.
- Gehörschutz: Prolonged exposure to high sound pressure levels can cause permanent hearing damage. Use appropriate hearing protection when operating the system at high volumes.
3. Lieferumfang
Prüfen Sie beim Auspacken, ob alle Komponenten vorhanden sind:
- 1x 15" Active Subwoofer
- 3x 4" Array Speakers (6 tweeters)
- 1x Telescopic Stand (78"-84" adjustable)
- 1x Telescopic Bracket
- 4x Spare Universal Wheels
- Necessary Power and Speaker Cables
4. Einrichtung
Follow these steps to assemble and connect your NBVOICE PRX ONE system:
- Universalräder anbringen: Secure the 4 universal wheels to the bottom of the 15" active subwoofer for easy mobility.
- Install Telescopic Stand: Screw the telescopic stand into the designated mounting point on top of the subwoofer. Adjust the height as needed.
- Assemble Array Speakers: Connect the three 4" array speakers to the telescopic bracket. Ensure they are securely fastened.
- Lautsprecherkabel anschließen: Use the provided short speaker cables to link the array speakers to each other, then connect the bottom array speaker to the subwoofer's speaker output.
- Stromanschluss: Connect the power cable to the subwoofer and then to a grounded AC power outlet.

Figure 4.1: Line Array Speaker Assembly Steps. This image illustrates the four main steps for assembling the speaker system: installing three speakers, installing speakers to brackets, installing the bracket pole to the subwoofer, and connecting audio cables.

Figure 4.2: Space-Saving Stack Industrial Casters. This image highlights the industrial casters on the subwoofer, emphasizing its portability and ease of movement.
Video 4.1: How to Set Up & Use NBVOICE 15" Subwoofer. This video provides a visual guide on the setup process, including connecting the line array speakers, subwoofer, and power cables, and initial power-on procedures.
5. Bedienungsanleitung
Familiarize yourself with the control panel and various input options:
5.1. Systemsteuerung überview

Figure 5.1: Control Panel. This image displays the rear control panel of the subwoofer, showing inputs for CH1/CH2 (Mic/Line), BT Level, DSP Mode selector, and various output options.
5.2. Ein-/Ausschalten
Locate the power switch on the rear control panel of the subwoofer. Flip the switch to the 'ON' position to power on the system. Flip to 'OFF' when not in use.
5.3. Audioeingangsanschlüsse
- Microphone/Line Inputs (CH1/CH2): Use XLR or 1/4" TRS cables to connect microphones or line-level devices (e.g., mixing desks, musical instruments). Adjust the corresponding CH1/CH2 Level knobs. Ensure the 'MIC/LINE' button is pressed for microphone input or released for line input.
- Hilfseingänge: Connect devices via RCA or 3.5mm AUX inputs.
- USB-Wiedergabe: Insert a USB flash drive into the USB port for direct audio playback.
5.4. Bluetooth-Konnektivität
The system supports Bluetooth 5.3 for wireless audio streaming up to 30m.
- Bluetooth aktivieren: Press the 'PAIRING' button on the control panel. The Bluetooth indicator light will flash.
- Gerät koppeln: On your smartphone or tablet, search for 'NBVOICE' in the Bluetooth settings and select to pair. The indicator light will become solid once connected.
- Adjust BT Level: Use the 'BT Level' knob to control the volume of the Bluetooth audio.

Figure 5.2: Bluetooth Connection. This image demonstrates a smartphone wirelessly connected to the speaker system via Bluetooth, with the Bluetooth indicator light illuminated.
5.5. DSP Mode Selection
The built-in Dual-Mode DSP processor offers 4 preset modes to optimize sound for different applications:
- Normal: Standard Sound Profile für den allgemeinen Gebrauch.
- Monitor: Optimiert für stage Überwachung.
- Playback/DJ: Enhanced bass and treble for music playback and DJ sets.
- Rede: Klare Sprachwiedergabe für Präsentationen und Reden.
Rotate the 'DSP MODE' knob to select the desired sound profile.

Figure 5.3: Bluetooth DSP Control. This image focuses on the DSP section of the control panel, showing the DSP Mode selector and Bluetooth pairing options.
5.6. TWS (True Wireless Stereo) Kopplung
For a true stereo experience, you can pair two NBVOICE PRX ONE systems wirelessly:
- Ensure both systems are powered on and Bluetooth is enabled on both.
- On one system (Master), press and hold the 'TWS LINK' button until the indicator light flashes.
- On the second system (Slave), press the 'TWS LINK' button briefly.
- The systems will automatically pair. The 'TWS LINK' indicator lights on both units will become solid when connected.

Figure 5.4: Dual Speaker Symphony. This image visually represents two NBVOICE PRX ONE systems set up for a stereo sound experience, highlighting the TWS capability.
Video 5.1: Our Speakers Powering Real US Festivals. This video demonstrates the NBVOICE PRX ONE system in an outdoor festival setting, showcasing its powerful sound and performance in a real-world scenario.
6. Wartung
Proper maintenance ensures the longevity and optimal performance of your NBVOICE PRX ONE system.
- Reinigung: Reinigen Sie die Außenflächen mit einem weichen, trockenen Tuch. Verwenden Sie keine Scheuermittel oder Lösungsmittel.
- Lagerung: Lagern Sie das System an einem kühlen, trockenen Ort, geschützt vor direkter Sonneneinstrahlung und extremen Temperaturen.
- Inspektion: Regularly inspect cables and connections for any signs of wear or damage. Replace damaged components immediately.
- Haltbarkeit: The 18mm birch plywood enclosure and scratch-resistant steel grilles are designed for road-ready durability, surviving 100-hour pressure tests.

Figure 6.1: Road-Ready Durability. This image emphasizes the robust construction of the speaker system, built with 18mm birch plywood for enhanced durability.
7. Fehlerbehebung
If you encounter issues with your NBVOICE PRX ONE system, refer to the following common troubleshooting steps:
- Kein Strom: Check the power cable connection to both the unit and the outlet. Ensure the power switch is in the 'ON' position.
- Kein Ton: Verify all audio cables are securely connected. Check input source volume and the master volume on the control panel. Ensure the correct input channel is selected.
- Verzerrter Klang: Reduce the input volume from your source device and the channel level on the speaker. Check for damaged cables.
- Probleme mit der Bluetooth-Verbindung: Ensure the 'PAIRING' light is flashing or solid. Try unpairing and re-pairing your device. Ensure your device is within the 30m range.
- Rückmeldung: Utilize the automatic feedback suppressor feature on the DSP control. Adjust microphone placement and volume levels.
8. Spezifikationen
| Besonderheit | Detail |
|---|---|
| Marke | NBVOICE |
| Modellnummer | NBVXA115 |
| Ausgang Wattage | 2400 Watt (Spitzenleistung) |
| Schalldruckpegel (SPL) | 131 dB |
| Frequenzgang | 38 Hz – 20 kHz |
| Größe des Subwoofers | 15 Zoll |
| Array-Lautsprecher | 6x 4" Mid-high frequency drivers, 3x 1" horn tweeters |
| Konnektivitätstechnologie | AUX, Bluetooth 5.3, USB, Wireless (TWS) |
| Eingänge | XLR, 1/4" TRS, RCA, 3.5mm AUX, USB |
| Ausgaben | Daisy-chain XLR outputs |
| DSP-Modi | Normal, Monitor, Playback/DJ, Speech |
| Gehäusematerial | 18mm Birch Plywood, Acrylonitrile Butadiene Styrene (ABS), Metal |
| Artikelabmessungen (L x B x H) | 23.28 x 20.58 x 24.41 Zoll |
| Artikelgewicht | 128 Pfund |

Figure 8.1: Innovative Acoustic Structure. This image details the speaker components, including 6x 4" mid-high frequency speakers, 3x 1" horn tweeters, and a 1x 15" subwoofer, highlighting the system's acoustic engineering.
9. Gewährleistung
The NBVOICE PRX ONE Stage PA Speaker System is backed by a 7 Jahr Garantie, which is three times the industry average. This warranty covers manufacturing defects and ensures long-term reliability.
For specific warranty details and claims, please contact the seller directly or refer to the manufacturer's official webWebsite.
10. Unterstützung
For further assistance, technical support, or inquiries regarding your NBVOICE PRX ONE system, please contact NBVOICE customer support through the platform where you purchased the product or visit the official NBVOICE webWebsite für Kontaktinformationen.
Video 10.1: NBVOICE NBXA115: The Speaker That Doesn't Lie. This video provides an overview of the speaker's sound quality and features, which can be helpful for understanding its capabilities and troubleshooting.