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Product Description Rack mountable and featuring rugged metal construction, the BLX4R offers simple setup and intuitive controls. One touch Quick Scan frequency selection quickly locates the best open frequency in case of interference. Removable antennas allow for quick antenna distribution. For use with BLX Wireless Systems. Includes: 1/2 Rack Receiver, 1/4 Wave Antennas and Single and Dual Rack Mount Kit. From the Manufacturer BLX4R Single Channel, Rack Mount Wireless Receiver, J10 To view a detailed front diagram of the BLX4R Single Channel, Rack Mount Wireless Receiver, click . BLX Wireless Systems For performers who wish to unplug from the wire, BLX Wireless Systems are the clearest choice. Shure delivers wireless confidence with legendary sound from industry-renown microphones, decades of wireless design proficiency and world-class construction. Available in a wide offering of bodypack and handheld configurations (including vocal, guitar, headset and presenter system), BLX Wireless Systems are ready to perform right out of the box. Receivers: At a Glance BLX Receiver Options BLX4 Single Channel Wireless Receiver BLX4R Single Channel, Rack Mount Wireless Receiver (currently selected) BLX88 Dual Channel Wireless Receiver One-touch QuickScan frequency selection quickly locates the best open frequency (in case of interference) Up to 12 compatible systems per frequency band (region-dependent) Two-color audio status indicator LED: Green: Normal audio levels Red: Excessive audio levels (overload/clipping) XLR and ¼" output connectors Additional BLX4R Features: Adjustable output level Removable antennas for quick antenna distribution LCD Display with detailed RF and audio metering Rack mount kit included Overview Rack-mountable and featuring rugged metal construction, the BLX4R offers simple setup and intuitive controls. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. Removable antennas allow for quick antenna distribution. For use with BLX Wireless Systems. Rack mount kit included. Note: When purchasing separate wireless components, please match their frequency bands to ensure proper system operation. To view a detailed back diagram of the BLX4R Single Channel, Rack Mount Wireless Receiver, click . BLX4R Single Channel, Rack Mount Wireless Receiver Specifications Output Impedance XLR connector: 200 ohm, 6.35 mm (1/4") connector: 50 ohm Audio Output Level (Ref. 33 kHz deviation with 1 kHz tone) XLR connector: -27 dBV (into 100k ohm load), 6.35 mm (1/4") connector: -13 dBV (into 100k ohm load) RF Sensitivity -105 dBm for 12 dB SINAD, typical Image Rejection >50 dB, typical Dimensions 50mm X 198mm X 163mm H x W x D Weight 998g (2.2lb.) without antennas Housing Molded ABS, steel Power Requirements 12-15V DC @ 160mA supplied by external power supply (tip positive) Housing Molded ABS Power Requirements 12 to 15 V DC @ 160 mA (BLX88, 320 mA), supplied by external power supply (tip positive) BLX Wireless Components Model BLX1 BLX4 BLX4R BLX88 Type Bodypack Single Channel Wireless Receiver Single Channel Rack Mount Wireless Receiver Dual Channel Wireless Receiver Frequency Options H8, J10, K12, K3E H8, J10, K12, M15 H8, J10, K12, M15 H8, J10, K12, M15 BLX Single Channel, Rack Mount Wireless Systems Model BLX14R BLX14R/B98 BLX14R/MX53 BLX14R/W85 BLX14R/W93 BLX24R/B58 BLX24R/SM58 Application Guitar Instrument Presenter Presenter Presenter Handheld Handheld For: Guitar & Bass Brass, Wind & Percussion Presenters, Instructors, Teachers & Clergy Presenters, Instructors, Teachers & Clergy Presenters, Instructors, Teachers & Clergy Live Vocals & Podcast/Voiceover Harmonica, Karaoke & Live Vocals Microphone - Beta 98H/C MX153 WL185 WL93 Beta 58A SM58 Operating Principle - Condenser Condenser Condenser Condenser Dynamic Dynamic Polar Pattern - Cardioid Omnidirectional Cardioid Omnidirecti