QSC Pilot Tone Load Circuit - PTL-1

No reviews

Sale price$74.00


The Q-Sys PTL-1 (Pilot Tone Load) is a circuit that provides a 22 kHz impedance “soak” at the end of a 70V/100V loudspeaker line. When used in combination with a QSC DataPort amplifier or CXD-Q amplifier and Q-Sys, the PTL-1 becomes a vital component in the real-time monitoring of each loudspeaker line. When a 22 kHz pilot tone (outside of the audible range of human hearing and undetectable above the program material) is transmitted along each loudspeaker line, Q-Sys Designer is able to easily detect a deviation in the impedance at 22 kHz. A significant drop below a pre-determined impedance will signify that a short-circuit has occurred, while a significant rise above a pre-determined impedance will signify that an open-circuit has occurred.

Each failure scenario will generate time-stamped events into the Q-Sys Event Log, and even trigger alert messages if desired. The system designer can select whether the pilot tone is only generated during a scheduled maintenance check, or whether it is always active and providing real-time diagnostics on every zone.


•Pilot tone detection on 70V/100V loudspeaker circuits using QSC DataPort amplifiers or CXD-Q amplifiers.

• Ceramic screw-down Connector block.

• Fuse protects circuit against shorts.

• Fits most plenum-rated multinational standard 2-Gang electrical box types.

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

Customer Reviews

Be the first to write a review

Nationwide Audiovisual Services - Design, Installation & Support - A Partner You Can Trust

Creation Networks offers audiovisual & video conferencing services for projects of all sizes - from a single meeting room to a nationwide deployment. You can count on us for your audiovisual technology system's design, configuration, programming, installation, and support. It is important that you get Top Quality products from the best manufacturers, and then purchase from a trusted partner who tests and installs what they sell, giving you the best value. Our goal at CreationNetworks.net is to only represent the top products and test everything before recommending or selling our solutions.


Our AV experts have earned their professional certifications to design, build, and manage the best AV services for you. View Our Certifications

Product Selection

Choose from products and national brands to find the right technology for your needs. View Our Vendor Partners