• Where can I purchase the X11?

The David Clark X11 and all of our Aviation Headsets are only sold through our Authorized Dealer Network. Our website lists them by State and Country. Contact a dealer near you or call our Customer Service number 800-298-6235 for a dealer referral.

• What are the new features of the X11?

There are many but some of the main features include it’s low-force suspension assembly for lightweight comfort, powered by 2 AA Batteries (avg. 30 hrs.) with auto shut-off, Cell Phone/Aux. Music input, super- soft fabric faced contoured gel ear seals, streamlined low-profile vented head pad and a modern design allowing compact storage in a uniquely designed DC Headset Bag.

• I'm experiencing some unwanted noise. What can I do?

The most common cause of this complaint has proven to be improper ear seal positioning. Unlike most other David Clark products, the contoured ear seals on the X11 are left/right specific. Therefore, if you rotate the microphone boom 180 degrees to accommodate your preference, it will be necessary to also switch your ear seals from side to side. This will insure proper sealing and reduce to possibility of unsatisfactory performance.

• How much does the X11 weigh?

The X11 Headset weighs in at just 12 ounces.

• What is the Warranty?

The X11 like all David Clark Aviation Headsets comes with a 5 year warranty.

• Is the X11 compatible with passive headsets being used in the same aircraft?

Yes, the X11 is compatible and will not create any degradation in communication.

• What is the noise cancellation performance of the X11?

The X11 has appreciable passive attenuation and exceptional electronic noise cancellation (17-22dB) that has been verified through extensive flight testing in numerous fixed wing aircraft. The X11's performance is also backed by our 30 Day Money Back Guarantee.

• What will happen if I lose battery power?

An important feature of the X11 ENC Technology is it’s true “fail-safe”
operation. Dual voice coils are electronically independent so that no interruption of communication can result from failure of the ENC system or it’s power source.
(Note: Cell Phone/Aux input features will not operate without battery power)

• What spare parts are available for the X11?

Super-Lightweight Head Pad
Soft Fabric-Faced Contoured Gel Ear Seals
M-77 Microphone
Foam Microphone Protector
Call for information on how to obtain these parts.

• Who do I call if I need service or have product questions?

As with all David Clark Company products our Customer Service Department is
always available to assist you with any service or product questions that you may
have. Simply call us at 800-298-6235 for the best Customer Service in the
aviation industry.

• How can I adapt the X11 to a Motorola Razr?

You will need to adapt the USB-like connector on the Razr to a 2.5mm jack, then use the David Clark supplied 2.5mm cord to connect it to the headset.
There are adapters available from third party vendors at the following links. (Note: Use at your own risk. David Clark Company does not warrant or guarantee these products and will not be responsible for their function or any damage incurred through their use.)

http://pilotsupport.stores.yahoo.net/newmoraad.html
http://www.cell-phone-accessories.com/emu-headset-adapter.html

• What direction do I turn the Volume Controls?

Since the boom assembly can rotate 180 degrees, it enables you to plug in without having the cord cross in front of you during the flight... When the headset is on your head and the mic./boom assembly and comm. cord are on your left side (typical pilot position in left seat) you rotate both controls forward to increase volume... If you are seated in the right seat (co-pilot or passenger in right seat) and the mic./boom assembly and comm. cord is on your right side then the opposite applies... Rotate the  controls back to increase volume. note:  If you switch the boom from side to side, be sure to switch the contoured ear seals at the same time to maintain optimum ENC performance.

• Is the X11 Headset TSO/FAA approved?  

The approval process is underway and we expect to have it during the first quarter of 2007. Please check back for updates.

• What is "Dual Voice Coil Technology?"

"Dual Voice Coil Technology” enables two disparate electrical signals to be combined into one acoustic signal.

It is a fail-safe measure.

X11 Quick Reference Guide