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HB-BL2

Unbalanced - Balanced Bi-Directional Converter




The HB-BL2 is a Bi-Directional stereo balancing, unbalancing and level-shifting interface used to inter-connect consumer, semi-professional and professional audio equipment. In addition, the HB-BL2 is a high-quality line driver for sending and receiving audio signals over long distances.

The HB-BL2 is also a gain conversion, it can take +4dBu balanced signals and convert to -10dBV unbalanced with a gain adjustment within 12dB. For the unbalanced to balanced channels there is a corresponding gain conversion from unbalanced -10dBV to balanced +4dBu with 12dB adjust-ment range.

 

EASY OPERATION

The HB-BL2 are individual attenuate switches within 3dB step for equipment input level matching quickly. Input signals have two corresponding LED's that indicate signal content.

The normal gains setting are indicated for the multi-turn trimming. For produce +4dBu balanced input to -10dBV unbalanced signal, these setting are possible to Max +12dB unity gain. For produce -10dBV unbalanced input to +4dBu unbalanced signal, these setting are possible to Min -12dB unity gain.

  

FEATURES

  • Correct interfacing of consumer and professional equipment with proper gain offset.
  • Independent gain adjustment 12dB on each channel allows for precise level adjustment with provides signal boost for long runs.
  • 3dB step attenuate switches for equipment input level matching.
  • High quality line driver for sending and receiving audio signals over long cable with Balanced transmission for better CMRR.
  • RFI Filters on all inputs and outputs. EMC-proof case significantly improves rejection of radio frequency interference.
  • LED indicators show signal contented of each input feed.
  • Switchable power supply (110V~120V or 220V~240V).
  • IEC-AC power receptacle

  

SPECIFICATIONS

  Audio Specifications  
  Frequency Response +0dB 20Hz~20kHz
  Input Impedance 10kΩ Balanced
    10kΩ Unbalanced
  Maximum Input Level +30dBu Balanced
    +16dBu Unbalanced
  Balanced Input, at 1kHz 70dB Typically
  Output Gain Adjustable Range -12dB~+12dB
  Output Impedance 20Ω Balanced
    20Ω Unbalanced
  Maximum Output Level +27dBu
  Output Noise (A-wtd, rms) -100dB (Refered to +4dBu In/-10dBV Out)
    -98dB (Refered to -10dBV In/+4dBu Out)
  THD+Noise 0.01% @ 1Hzat +24dBm
     
  Connections  
  Input 2 × XLRF (Balanced)
    × RCA Phono (Unbalanced)
  Output × XLRF (Balanced)
    × RCA Phono (Unbalanced)
  Power Requirement IEC, 110~120V or 220~240V
     
  Physical Specifications  
  Dimensions W482 × H44 - 1U Panel × D122 (mm)
  Nett Weight 2.5 kg

Associated downloads

HB-BL2 Operation Manual

HB-BL2 使用说明书