1. Introduktion
The Audibax Missouri 2500 A is a professional VHF dual wireless microphone system designed for clear and reliable audio transmission. This system includes a receiver unit and two bodypack transmitters, compatible with both headset and lavalier microphones. It is ideal for public speaking, presentations, live performances, karaoke, and singing, offering a stable connection with a range of up to 80 meters.
Key features include a high signal-to-noise ratio of 103 dB, reception frequencies of 179.300 MHz and 188.100 MHz, and a frequency response of 40 Hz to 18 kHz. The system's dynamic cardioid microphone capsules are optimized for frontal sound capture, minimizing ambient noise.
2. Sikkerhedsoplysninger
- Udsæt ikke enheden for regn eller fugt for at forhindre brand eller elektrisk stød.
- Åbn ikke c'enasing. Der er ingen dele indeni, som kan serviceres af brugeren. Overlad al service til kvalificeret personale.
- Brug kun den angivne strømadapter.
- Ensure proper ventilation around the receiver unit.
- Bortskaf batterier ansvarligt i henhold til lokale regler.
- Hold systemet væk fra stærke elektromagnetiske felter.
3. Pakkens indhold
Kontroller venligst, at alle nedenstående varer er inkluderet i din pakke:
- 1x Audibax Missouri 2500 A Receiver Unit
- 2x Bodypack Transmitters
- 2x Headset Microphones
- 2x Lavalier Microphones
- 1x Power Adapter for Receiver
- 1x Audio Output Cable (XLR to 1/4" Jack)
- 1x brugermanual
4. Produktet er slutview
4.1. Systemkomponenter

Figure 4.1: Complete Audibax Missouri 2500 A Wireless Microphone System.
4.2. Modtagerenhed

Figure 4.2: Front Panel of the Receiver Unit.
- Afbryderen: Turns the receiver ON/OFF.
- Vise: Shows current channel frequencies (179.30 MHz / 188.10 MHz).
- RF/AF Indicators: RF (Radio Frequency) indicates signal reception from the transmitter. AF (Audio Frequency) indicates audio signal presence.
- Lydstyrkeknapper: Independent volume control for each microphone channel (A and B).

Figure 4.3: Rear Panel of the Receiver Unit.
- Antenna Connectors (ANT A, ANT B): For connecting the included antennas.
- Balanceret XLR-udgang: Professional audio output for connecting to mixers or amplivførere.
- Mixed Auxiliary Output (1/4" Jack): Standard audio output for connecting to various audio equipment.
- Power Input (220V-50Hz): Til tilslutning af strømadapteren.
4.3. Bodypack Transmitters

Figur 4.4: Forside View of a Bodypack Transmitter.

Figur 4.5: Bagside View of a Bodypack Transmitter.
- ON/OFF/MUTE Switch: Styrer tænd/sluk og slår mikrofonen fra.
- Microphone Input Jack: Til tilslutning af headset- eller lavaliermikrofoner.
- Batterirum: Holds AA batteries (not included).
- Bælteklips: Til fastgørelse af senderen til tøjet.
4.4. Mikrofoner

Figure 4.6: Headset Microphones.

Figure 4.7: Lavalier Microphones.
- Headsetmikrofoner: Worn over the head, providing hands-free operation.
- Lavalier Microphones: Small, clip-on microphones for discreet placement on clothing.
- Both types feature dynamic cardioid capsules for focused sound pickup.
5. Opsætningsvejledning
- Udpak komponenter: Fjern forsigtigt alle varer fra emballagen.
- Tilslut antenner: Screw the two antennas onto the ANT A and ANT B connectors on the rear of the receiver unit. Ensure they are securely tightened and positioned vertically for optimal reception.
- Tænd for modtageren: Connect the provided power adapter to the receiver's power input (220V-50Hz) and plug it into a suitable power outlet. Do not power on the receiver yet.
- Tilslut til lydsystem: Use the balanced XLR output or the mixed auxiliary (1/4" Jack) output on the receiver's rear panel to connect to your audio mixer, amplifier, or sound system.
- Install Batteries in Transmitters: Open the battery compartment on each bodypack transmitter and insert two AA batteries, observing the correct polarity (+/-). Close the compartment securely.
- Connect Microphones to Transmitters: Plug your chosen headset or lavalier microphone into the microphone input jack on each bodypack transmitter.
6. Betjeningsvejledning
- Tænd: First, turn on your audio mixer/amplifier. Then, press the power switch on the receiver unit to turn it on. Finally, slide the ON/OFF/MUTE switch on each bodypack transmitter to the 'ON' position.
- Tjekindikatorer: Observe the RF (Radio Frequency) indicators on the receiver's front panel. They should illuminate, indicating that the receiver is receiving a signal from the transmitters.
- Juster lydstyrken: Speak into the microphones. The AF (Audio Frequency) indicators on the receiver should light up, indicating audio signal presence. Adjust the independent volume knobs for Channel A and Channel B on the receiver to achieve the desired output level.
- Using the Mute Function: To temporarily silence a microphone without turning off the transmitter, slide the ON/OFF/MUTE switch on the bodypack transmitter to the 'MUTE' position. Slide it back to 'ON' to resume audio transmission.
- Optimal placering: For headset microphones, position the boom mic approximately 2-3 cm from the corner of your mouth. For lavalier microphones, clip them to your clothing about 15-20 cm below your chin.
- Driftsområde: The system has an effective operating range of up to 80 meters in open, unobstructed environments. Walls, large metal objects, and other wireless devices may reduce this range.
- Sluk: When finished, first slide the transmitter switches to 'OFF', then turn off the receiver, and finally turn off your audio mixer/amplivligere.
7. Vedligeholdelse
- Rensning: Use a soft, dry cloth to clean the receiver and transmitters. Do not use liquid cleaners or solvents, as they may damage the finish or internal components.
- Udskiftning af batteri: Replace batteries in the bodypack transmitters when the audio quality degrades or the transmitter indicator light (if present) signals low battery. Always use fresh AA batteries.
- Opbevaring: When not in use for extended periods, remove batteries from the transmitters and store the system in a cool, dry place, away from direct sunlight and extreme temperatures.
- Antennepleje: Håndter antenner forsigtigt for at undgå at de bøjer eller knækker.
8. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Ingen lydudgang | Modtageren er ikke tændt Senderen er ikke tændt Microphone not connected to transmitter Low or dead batteries in transmitter Modtagerens lydstyrke er for lav Lydkabel frakoblet | Ensure receiver is plugged in and powered on Turn on transmitter (slide switch to ON) Connect microphone securely to transmitter Udskift batterierne i senderen Øg modtagerens lydstyrke Check and secure all audio cable connections |
| Poor sound quality / Interference | For langt fra modtageren Obstacles between transmitter and receiver Interferens fra andre trådløse enheder Antennas not properly positioned Lave batterier | Reducer afstanden mellem sender og modtager Sørg for frit udsyn Gå væk fra andre trådløse enheder (Wi-Fi, Bluetooth) Adjust antennas vertically Udskift batterierne |
| RF indicator not lighting up | Transmitter off or out of range Transmitter batteries dead | Turn on transmitter and move closer to receiver Udskift senderens batterier |
| AF indicator not lighting up | Microphone muted or disconnected No sound input to microphone | Check transmitter mute switch and microphone connection Ensure sound source is present and microphone is picking it up |
9. Specifikationer
| Feature | Specifikation |
|---|---|
| Modelnavn | Missouri 2500 A |
| Fabrikant | Audibax |
| Mikrofon formfaktor | Lavalier, Headset |
| Polar mønster | Envejs (kardioid) |
| Forbindelsesteknologi | Auxiliary, XLR (Wireless VHF) |
| Receiver Frequencies | 179.300 MHz / 188.100 MHz |
| Frekvensrespons | 40 Hz - 18 kHz |
| Audio Følsomhed | 105 dB |
| Signal/støjforhold | 103 dB |
| Impedans | 3000 ohm |
| Strømkilde | Battery Powered (AA for transmitters) |
| Dimensioner (L x B x H) | 39 x 30 x 8 cm (Receiver) |
| UPC | 656272950385 |
| Særlige funktioner | Diversified antennas, Dynamic cardioid microphone capsule system |
| Anbefalede anvendelser | Public speaking, Presentations, Live performances, Karaoke, Singing |
10. Garanti og support
Audibax products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the contact details provided with your purchase documentation or visit the official Audibax webwebsted. Gem din købsbevis i tilfælde af garantikrav.





