Features of the Shure BLX288/B58-H9 Dual Diversity System with Two BLX2/B58 Mics:

• For Two Presenters or Performers
• 2x Beta58 Supercardioid Mic/Transmitters
• Dual-Channel Tabletop Receiver
• 123 Auto-Scan Frequencies
• Internal Antenna Diversity
• 14-Hour AA Batteries
• Expandable to 12 Mic Channels/300′ Range

Specifications:

System
Wireless Technology Analog UHF
Number of RF Channel Frequencies 123
Included Transmitters 2 x Handheld
Diversity Antenna Diversity
RF Frequency Band H9:
512 to 542 MHz
RF Bandwidth 30 MHz
Max Operating Range 300′ / 91.4 m (Line of Sight)
Max Transmitters per Band 12
Dynamic Range 100 dBA
Receiver
Receiver Type Tabletop
Antenna 2 x Internal
Number of Audio Channels 2
Audio I/O 2 x XLR 3-Pin Male Balanced Output
2 x 1/4″ TRS Female Unbalanced Output
Audio Output Level XLR Outputs:
-27 dBV (Mic Level)
1/4″ Outputs:
-13 dBV (Instrument Level)
Frequency Response 50 Hz to 15 kHz (Dependent on Mic)
Impedance XLR Outputs:
200 Ohms
1/4″ Outputs:
50 Ohms
Power Requirements AC/DC Power Adapter
AC/DC Power Adapter 12 to 15 VDC at 160 mA, Center-Positive (Included)
Display & Indicators 2 x Multi-Segment LED (Channel, Group)
4 x LED (AF Level, Sync)
Housing ABS
Operating Temperature 0 to 135°F / -17 to 57°C
Dimensions 12.1 x 1.6 x 4″ / 308 x 40 x 101 mm
Weight 15.1 oz / 429 g
Transmitter
Transmitter Type Handheld
RF Output Power 10 mW
Audio I/O None
Muting Off/On Switch
Gain Range -20 to -10 dB
Sync Method Manual
Antenna 1 x Internal (Handheld)
Power Requirements Battery
Battery Type 2 x AA (Included)
Approx. Battery Life 14 Hours (Alkaline)
Display & Indicators 1 x Multi-Segment LED (Channel, Group)
1 x LED (Battery Status, Power)
Housing ABS
Dimensions 2.1 x 8.8″ / 53.3 x 223.5 mm
Weight 7.7 oz / 218 g (without Batteries)
Microphone
Microphone Type Handheld Capsule
Sound Field Mono
Capsule Dynamic
Polar Pattern Supercardioid
Frequency Range 50 Hz to 16 kHz
Sensitivity -51.5 dBV/Pa at 1 kHz