Indledning
The Audio-Technica AT9900 is a high-quality, high-sensitivity compact stereo microphone designed for digital recording equipment. It features a newly developed pivot floating structure to reduce extraneous vibration noise and a free-angle mechanism for flexible cable output. The microphone includes an indoor/outdoor mode switch to reduce noise, such as wind, ensuring clear recordings in various environments. Its excellent acoustic characteristics are enhanced by a full-surface metal mesh, which helps reduce external noise interference.
Pakkens indhold
Before use, please ensure all items are present:
- Audio-Technica AT9900 Stereo Lavalier Microphone
- LR44 Batteri
Opsætning
- Indsæt batteri: Open the battery compartment and insert the supplied LR44 battery, ensuring correct polarity. The microphone requires battery power for operation.
- Opret forbindelse til enhed: Plug the 3.5 mm L-type gold-plated stereo mini jack into the microphone input port of your digital recording equipment (e.g., camera, portable recorder, computer).
- Position Mikrofon: Use the integrated clip to attach the microphone to clothing, such as a lapel or collar, ensuring it is positioned optimally for sound capture.

Image: The AT9900 microphone shown clipped to a jacket lapel, demonstrating its typical lavalier placement for recording.
Betjeningsvejledning
- Tænd/sluk: Locate the ON/OFF switch on the microphone body. Slide the switch to the "ON" position to power on the microphone. Slide it to "OFF" when not in use to conserve battery life.
- Vælg optagetilstand: The microphone features an L-CUT/FLAT switch.
- FLAD: Use this setting for standard recording environments, typically indoors, where a full frequency response is desired.
- L-CUT (Low-Cut Filter): Use this setting in outdoor environments or situations where low-frequency noise (e.g., wind noise, rumble) needs to be reduced. This filter helps to improve clarity of speech or desired sounds by attenuating unwanted low-end frequencies.

Billede: Et nærbillede view of the AT9900 microphone's top panel, highlighting the L-CUT/FLAT switch, the AT9900 model indicator, and the ON/OFF power switch.
- Start optagelse: Start recording on your connected digital recording equipment. Monitor audio levels to ensure optimal sound capture without distortion.
Opretholdelse
- Rensning: Tør mikrofonhuset af med en blød, tør klud. Brug ikke flydende rengøringsmidler eller opløsningsmidler.
- Opbevaring: Store the microphone in a dry, cool place away from direct sunlight and extreme temperatures.
- Udskiftning af batteri: Replace the LR44 battery when sound quality degrades or the microphone fails to power on. Dispose of used batteries responsibly.
- Kabelpleje: Undgå skarpe bøjninger eller overdreven trækkraft i kablet for at forhindre skader.
Fejlfinding
- Ingen lyd/lav lydstyrke:
- Ensure the microphone is switched "ON".
- Check if the LR44 battery is correctly inserted and has sufficient charge. Replace if necessary.
- Verify the 3.5mm jack is fully inserted into your recording device's microphone input.
- Check the input settings and volume levels on your recording equipment.
- Forvrænget lyd:
- Reduce the input gain on your recording device.
- Sørg for, at mikrofonen ikke er for tæt på lydkilden.
- Overdreven vindstøj:
- Switch the microphone to the "L-CUT" mode.
- Consider using an external windscreen (not included) for very windy conditions.
Specifikationer
| Element | Stereo Electret Condenser |
| Polar mønster | Ensrettet |
| Frekvensrespons | 70-16,000 Hz |
| Følsomhed | -42 dB (7.9 mV) re 1V ved 1 Pa |
| Impedans | 2,000 ohm |
| Strømforsyning | Battery/Plug-in Power |
| Batteritype | LR44 |
| Batterilevetid | Cirka 300 timer |
| Dimensioner (H x B x D) | 41 x 58 x 20 mm |
| Vægt | 23 g (microphone only) / 37 g (item weight from specs) |
| Kabellængde | 1.6 m |
| Stik | 3.5 mm L-type gold-plated stereo mini jack |
| Signal-støjforhold | 80 dB |
| Materiale | Metal |
Bemærk: Specifikationerne kan ændres uden varsel med henblik på produktforbedring.
Garanti og support
Audio-Technica products are manufactured to high quality standards. For warranty information, please refer to the warranty card included with your product or visit the official Audio-Technica webwebstedet for detaljer specifikke for din region.
For technical support, troubleshooting assistance, or service inquiries, please contact Audio-Technica customer support through their official webwebsted: Audio-Technica Official Store.