Audio-Technica System 9 ATW-901a/H Wireless Headset Microphone 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).

The ATW-R900 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-R900 also offers volume control along with AF Peak, RF and Power indicator lights.

The Audio-Technica ATW-901a/H headset wireless system 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

The Audio Technica ATW-901a/H headset wireless system includes:

• ATW-R900 Receiver
• ATW-T901 UniPak ® transmitter
• PRO 8HEcW headworn microphone

Specifications:

OVERALL SYSTEM SPECIFICATIONS:  

• Operating Frequencies:  VHF highband, 169 MHz to 172 MHz
• Modulation Mode:  FM
• Maximum Deviation:  +/-10 kHz
• Dynamic Range:  >/=90 dB (A-weighted), typical
• Total Harmonic Distortion:  <1% (at 1 kHz, +/-10 kHz deviation)
• Operating Range:  200' (60 m) typical Open range environment with no interfering signals
• Operating Temperature Range:  40° F (4° C) to 110° F (43° C)  Battery performance may be reduced at very low temperatures
• Frequency Response:  80 Hz to 13 kHz
• Maximum Simultaneous Use (Recommended):  200' minimum

RECEIVER SPECIFICATIONS:

• 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)
• 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 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 
• Net Weight:  12.0 oz (337 grams)
• Accessory Included:  Power supply  

BODY-PACK TRANSMITTER SPECIFICATIONS:

• RF Power Output:  10 mW
• Spurious Emissions:  Following federal and national regulations
• Input Connections Four-pin Locking Connector Pin 
• Batteries:  Two 1.5V AA not included
• Battery Life:  8 hours (alkaline) Depending on battery type and use pattern
• Dimensions:  2.76" (70.2 mm) W x 4.08" (103.7 mm) H x 0.98" (24.9 mm) D
• Net Weight:  2.8 oz (80.0 grams) without batteries

AT PRO 8HEcW:  

• ELEMENT:  Dynamic
• POLAR PATTERN:  Hypercardioid
• FREQUENCY RESPONSE:  200-18,000 Hz
• OPEN CIRCUIT SENSITIVITY:  -55 dB (1.7 mV) re 1V at 1 Pa
• IMPEDANCE:  600 ohms
• WEIGHT:  2.1 oz (60 g)
• DIMENSIONS (MICROPHONE):  0.80" (20.4 mm) diameter  
• DIMENSIONS (HEADSET):  4.72" (120.0 mm) nominal at widest point, 3.17" (80.5 mm) flexible boom
• OUTPUT CONNECTOR:  3-pin XLRM-type on cable
• CABLE:  7.2' (2.2 m) long, 0.11" (2.8 mm) diameter miniature audio cable permanently attached between microphone and XLRM-type connector
• ACCESSORIES FURNISHED:  AT8139L large windscreen; T8139S small windscreen; AT8439 clothing clip
• AUDIO-TECHNICA CASE STYLE:  M19