Audio-Technica System 9 4-Channel Wireless System

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.

Features

• Easy operation and clear, natural sound quality
• 4 selectable frequency-coordinated VHF channels
• Balanced XLR and unbalanced 1/4" output jacks enable use with a wide variety of audio gear
• Reliable performance and durable construction
• Advanced dipole antenna system for extended operating range

Specifications

Overall System
Operating Frequencies: VHF highband, 169 MHz to 172 MHz
Modulation Mode: FM
Maximum Deviation: +/-10 kHz
Frequency Response: 80 Hz to 13 kHz
Operating Range: 200' (60 m) typical
Open range environment with no interfering signals
Total Harmonic Distortion: < 1% (at 1 kHz, +/-10 kHz deviation)
Operating Temperature Range: 40° F (4° C) to 110° F (43° C)
Battery performance may be reduced at very low temperatures
Notes: First-generation System 9 (original) components: ATW-R900 receiver ATW-T901 body-pack transmitter ATW-T902 unidirectional dynamic microphone transmitter

Handheld Transmitter
RF Power Output: 10 mW
Spurious Emissions: Following federal and national regulations
Battery Type: Two 1.5V AA not included
Battery Life: 8 hours (alkaline) Depending on battery type and use pattern
Dimensions: 9.91" (251.8 mm) long, 2.11" (53.5 mm) diameter
Net Weight: 9.2 oz (260 grams) without batteries
Accessories Included: AT8456a Quiet-Flex™ stand clamp

Body Pack
RF Power Output: 10 mW
Battery Life: 8 hours (alkaline) Depending on battery type and use pattern
Battery Type: Two 1.5V AA not included
Dimensions: 2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) D
Input Connections: Four-pin Locking Connector Pin 1: GND Pin 2: INST INPUT Pin 3: MIC INPUT Pin 4: DC BIAS +9V
Net Weight: 2.8 oz (80.0 grams) without batteries
Spurious Emissions: Following federal and national regulations

Receiver
Receiving System: Non-diversity, single-channel, dual antenna system
Image Rejection: 50 dB minimum
RF Sensitivity: 20 dBuV at 60 dB S/N ratio (50 ohms termination)
Power Supply: 100-240V AC (50/60 Hz) to 12V DC .5A (center positive) switched mode external power supply
Operating Temperature Range: 40° F (4° C) to 110° F (43° C)
Dimensions: 7.48" (190.0 mm) W x 1.82" (46.2 mm) H x 5.06" (128.5 mm) D
Weight: 12.0 oz (337 grams)
Accessories Included: Power supply
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)