Balanced Line Transceiver

Professional A/V installers often encounter projects requiring long cable runs, and the BLX-1K has been engineered as a premium, simple solution to efficiently address these challenges. The BLX-1K is a signal extender that sends and receives a fully balanced, noise-rejecting, analog audio signal up to 1000 feet over standard CAT5e/6A cable.

Designed for use in pairs at both ends of the signal path, each BLX-1K contains a 2-channel receive stage as well as a 2-channel transmit stage, enabling audio to travel in both directions across a span of standard CAT5e/6A. Once wired connections are made, the A/B button on one unit is pressed to reverse the signal path. Signal gain can then be set to complete the installation. The BLX-1K comes equipped with a 24 VAC transformer for easy connection and ultra-quiet performance.

The BLX-1K delivers a stout output of nearly 8 Volts rms with an exceptionally low noise floor, providing a pure, crystal clear audio signal over long Ethernet runs—the ultimate problem-solver for A/V installers.

Features

• Send/receive high-quality audio up to 1000 feet
• High gain, low noise outputs
• Simple connection with one-button setup
• Supports standard CAT5e/6A cable
• Separate balanced line driver and receiver stages
• Independent gain and attenuation controls
• Ground lift option (when using shielded CAT5e/6A)
• Integrated mounting brackets

Specifications

INPUTS

Unbalanced Inputs (RCA): 2
Unbalanced Input Impedance: 100 kΩ
Maximum Unbalanced Input Signal Level: 3.8 Vrms
Balanced Inputs (CAT5e/6A): 1 (2 channel)
Balanced Input Impedance: 200 kΩ

OUTPUTS
Unbalanced Outputs (RCA): 2
Unbalanced Output Impedance: 150 Ω
Maximum Unbalanced Output Signal Level: 7.5 Vrms max
Balanced Outputs (CAT5e/6A): 1 (2 channel)
Balanced Output Impedance: 150 Ω
Maximum Balanced Output Signal Level: 15 Vrms max

PERFORMANCE
Frequency Response: 20 Hz to 20 kHz, ± 1 dB
Signal to Noise: >100 dB (ref. full output = 7.5 Vrms)
Total Harmonic Distortion: 0.1%
Headroom: 8.5 dB
Channel Separation: 90 dB (1 kHz)
CMRR: >69.5 dB (1kHz)

GENERAL
Power Supply: 24 VAC
Current Draw: 50 mA

WEIGHT & DIMENSIONS
Dimensions: 6.2” W x 4.3” D x 1.0” D
Weight: 1.0 lbs. (0.5kg)

IN THE BOX
 BLX-1K, AC Adapter, Manual, Warranty