Learn more about your Zulu PFX®
Here you can learn more about Zulu PFX, read frequently asked questions, watch videos, and download the most current Zulu PFX user guide
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Zulu PFX FAQ
The Zulu PFX battery-powered headsets require four AA batteries. Use alkaline batteries for best performance, although lithium batteries may provide improved battery life in colder temperatures. We do not recommend using rechargeable batteries or mixing battery types and brands. A set of batteries can provide up to 20 hours of power; however, heavy Bluetooth® usage will reduce battery life.
If you lose power at any time, Zulu PFX will continue to perform as a passive headset. When batteries begin to run low, the power LED flashes red, and the headset will continue to operate for up to 5 hours, depending on Bluetooth use. Install new batteries as soon as possible at any indication of low batteries. We recommend you add checking your headset batteries on your preflight checklist and check your battery level indicator in FlightLink.
Zulu PFX's Mono/Stereo switch is probably set to stereo while your audio panel is transmitting a mono signal. To fix this, change Zulu PFX's Mono/Stereo switch to Mono. This setting does not affect music or audio from auxiliary devices; you can hear stereo sound on auxiliary devices even when the Mono/Stereo switch is set to Mono.
You can think of microphone gain as a volume control for your microphone. Soft voices might benefit from an increase in gain in order to improve audibility and, in some cases, to break squelch; louder voices may need little to no gain increase. Equipping each headset with its own gain adjustment helps balance loud and soft voices in a multi-headset environment.
To adjust mic gain, remove the foam windscreen on your microphone and then remove the small cap next to the Lightspeed logo on our microphone to reveal the adjustment dial. Turning the adjustment dial clockwise will increase gain and turning it counterclockwise will decrease gain. A little adjustment goes a long way, so move the dial in small increments (think one-hour increments on a clock face) and test it in your aircraft. When you are satisfied with the adjustment, replace the cap and foam windscreen.
Note: Zulu PFX is designed to automatically enter pairing mode when Bluetooth is turned on and will connect with previously paired device if in range.
Zulu PFX will always attempt to connect to the most recently paired device. To connect to a different device, first turn off Bluetooth on any previously paired devices that are in range of the Zulu PFX Headset. Then follow the steps above.
FlightLink is the proprietary app developed by Lightspeed Aviation for the Apple iPad® and iPhone®. Using the free FlightLink app, pilots can customize key audio and other settings of their Zulu PFX headset, as well as record in-cockpit communications for instant playback or later retrieval.
Note: For additional FlightLink information, please visit the FlightLink FAQ page here.
Yes, registering ensures you receive information regarding firmware updates or in the event you may require service. You can easily register through the FlightLink app, on our website, or by calling us at 1-800-332-2421.
As firmware updates become available they are just a download away, allowing your Zulu PFX to evolve with new software innovations. Update info and instructions are available at LightspeedAviation.com/firmware.
Home mode provides the following baseline configurations: Bass and treble are set to 0; Front Row Center is set to ON; Auto Shutoff™ is set to 2 minutes; Voice Clarity™ is set to OFF; ComPriority™ is set to ON (double tapping the button below the Power button, however, will toggle this feature on and off).
The Auto Shutoff feature of Zulu PFX can be controlled through the FlightLink app. The headset will not automatically shut off as long as it detects:
To gain peak performance from the ANR feature designed into your Lightspeed headset, it is necessary to have a solid seal around your ears. Without a tight seal, air can seep in and cause the ANR to compensate for uneven internal cup pressure, often resulting in a warbling noise. A common cause of a broken seal is not having your ear entirely within the ear cup. To create a solid seal, make sure the entire ear is inside the ear cup cavity.
Another, less common cause of faulty seals occurs when the bottom of the ear cup drops below the place on the jaw where the two sides begin to converge towards the chin. The cure is to move the cups up the side of the head slightly. If you have adjusted the headband to its shortest position and the problem persists, tall head pads could help. By lifting the headband higher, they move the ear cups up to a more optimal position.
Please note that tall head pads are only available for Zulu series headsets, and some users may not find them as comfortable as the original head pads.
Streaming Quiet™ ANR, available in Favorites mode, continuously adapts to your environment, which extends the amount, consistency, and frequency range of noise cancellation. In some unique situations, however, Home mode may deliver more acceptable ANR results. These include extremely loud aircraft operating in high RPM phases of flight or open windows or cockpits. The best test is to take advantage of our 30-day money-back guarantee and test Zulu PFX in your own aircraft.
Zulu PFX will work the same as with our existing headset models, although the wearer may be affected by the acoustic response mapping tone.
The mic is not reversible. Placement of the driver within the ear cup is critical. Because the optimum alignment is not dead center, reversing the headset on your head would significantly diminish the audio performance, quality, and clarity you enjoy from your Zulu PFX.
Zulu PFX uses rugged cables constructed of silver-coated copper alloy wrapped around a Kevlar core to deliver extraordinary flexibility, strength, and audio quality.
Upper cables are 48 inches; Lower cables are 27 inches long.
There is currently no coiled version, but the flexibility of the rugged cables makes them easy to wrap and clip out of the way. Helicopter pilots that have test flown with Zulu PFX actually preferred this over coiled cables.
We are very proud of our Trade Up Program as a way to keep our pilots in the best headsets available at a discounted price. We are please to announce that Zulu PFX has been added to the program. Please check our Trade Up website for details.
See photos and learn more about Zulu PFX on the Zulu PFX product page.