ATW-R900a receiver and ATW-T902a handheld dynamic unidirectional microphone/transmitter. Includes AT8456a Quiet-Flex stand clamp.
Audio-Technica's System 9 is a four-channel frequency-agile wireless system designed to provide rock-solid performance along with easy setup and clear, natural sound quality. Featuring sleek, stackable, contemporary styling, System 9 is available in handheld, headworn, guitar, lavalier and body-pack configurations. The system offers four compatible user-switchable VHF channels (169.505, 170.245, 171.045, and 171.905 MHz).
Each System 9 configuration includes the ATW-R900a receiver and either a body-pack transmitter or handheld microphone/transmitter. The ATW-R900a is a non-diversity, single-channel receiver with advanced dipole antenna design for extended operating range, which improves operation by providing a ground element in addition to the usual signal element. The ATW-R900a also offers volume control along with AF Peak, RF and Power indicator lights.
OVERALL SYSTEM SPECIFICATIONS
Operating Frequencies VHF highband, 169 MHz to 172 MHzModulation Mode FMMaximum Deviation +/-10 kHzDynamic Range >/=90 dB (A-weighted), typicalTotal Harmonic Distortion <1% (at 1 kHz, +/-10 kHz deviation)Operating Range 200' (60 m) typicalOpen range environment with no interfering signalsOperating Temperature Range 40 degree F (4 degree C) to 110 degree F (43 degree C)Battery performance may be reduced at very low temperaturesFrequency Response 80 Hz to 13 kHz
Receiving System Non-diversity, single-channel, dual antenna systemImage Rejection 50 dB minimumRF Sensitivity 20 dBuV at 60 dB S/N ratio (50 ohms termination)Audio Output Nominal Output Level XLR, balanced: 350 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load) 1/4" (6.3 mm), unbalanced: 700 mV (1 kHz modulation, 10 kHz deviation, 100k ohm load)Power Supply 100-240V AC (50/60 Hz) to 12V DC .5A (center positive) switched mode external power supplyDimensions 7.48" (190.0 mm) W x 1.82" (46.2 mm) H x 5.06" (128.5 mm) DNet Weight 12.0 oz (337 grams)Accessory Included Power supply
BODY-PACK TRANSMITTER SPECIFICATIONS
RF Power Output 10 mWSpurious Emissions Following federal and national regulationsInput Connections Four-pin Locking Connector Pin 1: GND Pin 2: INST INPUT Pin 3: MIC INPUT Pin 4: DC BIAS +9VBatteries Two 1.5V AA not includedBattery Life 8 hours (alkaline) Depending on battery type and use patternDimensions 2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) DNet Weight 2.8 oz (80.0 grams) without batteries
HANDHELD TRANSMITTER SPECIFICATIONS
RF Power Output 10 mWSpurious Emissions Following federal and national regulationsBatteries Two 1.5V AA not includedBattery Life 8 hours (alkaline) Depending on battery type and use patternDimensions 9.91" (251.8 mm) long, 2.11" (53.5 mm) diameterNet Weight 9.2 oz (260 grams) without batteriesAccessory Included AT8456a Quiet-Flex stand clamp
First-generation System 9 (original) components: ATW-R900 receiver ATW-T901 body-pack transmitter ATW-T902 unidirectional dynamic microphone transmitter
Click here for the original System 9 Owner's Manual.
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888-CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC's wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones.