Home > etcetera > QSC CX108V 8-Channel 70V Power Amplifier

QSC CX108V 8-Channel 70V Power Amplifier

My client had two of these QSC CX108V 70V amplifiers conk out on them and they were duly sent for repair. Apparently there was a problem with the “housekeeping card” or whatever that is. So those offending electronic items were duly replaced and sent back after repair.

I have always been interested in QSC amplifiers. I can never forget when I had a pair of QSC MX2000 amplifiers 25 years ago in the club, doing a damn good job f powering some Turbosound loudspeakers. So I was equally in awe about these 8-channel units and this is what I found out about them after looking them up o the web:


  • 100 watts per channel at 70 volts
  • Compact size—only two rack spaces and 14″ deep for reduced rack space
  • Channel pairs bridgeable for maximum flexibility
  • Exclusive PowerLight switch-mode power supply technology for high performance and compact size
  • Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
  • Four HD15 DataPort connectors (one per channel pair) for Q-SYS networked control and monitoring
  • Custom integrated gain control security cover for tamper-proof installations
  • 1-dB recessed detented gain controls for fast and accurate settings
  • Detachable Euro-style input and output connectors
  • DIP switch control for clip limiters, high-pass filters, bridge mono and parallel operation
  • Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (50 Hz or 75 Hz)
  • Comprehensive front panel indicators including signal, clip, bridge mono and parallel input LEDs
  • Fully protected—including DC, infrasonic and ultrasonic, thermal overload and short circuit protection
  • High-performance Class AB+B complementary bipolar output circuitry
  • Lightweight—only 21 pounds (9.5 kg) for easier racking and shipping

And lightweight is true indeed. Unlike QSC amplifiers of old, these seemed almost featherweight. After installing them, they did the job and sounded as great as ever. Gotta love these QSC amplifiers. They will be giving many more years of service with no more issues…I hope!


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