#BOSE AVIATION HEADSET FINANCING PC#
The standard voltage from a PC audio card is 5v. I'm unable to find any standard voltage, but it appears the David Clark aviation headsets run on 8-16v. Some aircraft intercoms provide phantom power. They can either contain a battery or run off phantom power, which is a voltage supplied by the device it's plugged into.
Phantom powerĮlectret mics require a power source to operate. Too little and it won't open when you speak, too low and it will stay open and you will hear all the aircraft noise. Depending on whether there is a way to adjust the mic input, the level may be too much or too little for the vox system. Aircraft comms use a vox circuit to cut out noise that opens when you speak. The headset you listed in the question lists 2.2k $\Omega$ which would be work, depending on how much amplification it has. Civilian systems use high-Z, 80-300 $\Omega$ amplified electret mics. Military systems use 5 $\Omega$, low impedance mics. This will make a bigger difference than the headphones. I was always careful to make sure volumes were turned down before I plugged them into the com boxes. I used a set of low-z phones, since I could plug them into a line output and actually hear it. In the recording studio we considered high-Z headsets to be "universal" meaning that you could plug them in anywhere and they would work, but might be limited in volume.
There's no real standard, but low-Z are usually less than 32 $\Omega$ And high-Z is usually above 100 $\Omega$. The headphones you listed in the question are 60 $\Omega$, which is somewhat of an in-between. You could run the risk of damaging the headset or your hearing if you have the volume up too far. A low-Z headset will also be more sensitive, so you would have to turn the volume down. Using a low-Z headset with a high-Z output can cause distortion. Impedance matching is not vital, but can cause some problems with sound quality. Civil aviation uses 300 $\Omega$, high impedance headphones. Military headphones are low impedance, 19 $\Omega$. Impedance is usually referred to in high and low range. But you have to have an adaptor that fixes several compatibility issues. Knowledgeable buyers are expected to carefully review all of the available information in the inspection report, including all photographs, in order to make the best bidding and buying decision possible.Can you physically make it work? Yes. This inspection report includes ratings, comments, and photos of the various components of the item. These inspections are not designed nor intended to detect latent defects, or conditions that could only be found in connection with the physical dismantling of the equipment or the use of diagnostic tools or techniques. Please note that IronPlanet inspections are performed solely for the purpose of reporting the visible condition of the equipment's major systems and attachments on the day of the inspection and do not include load testing or digging/lifting. Following submission of a written dispute claim, IronPlanet will investigate the claim, re-inspecting the equipment item as necessary, and determine a fair and mutually beneficial resolution. With IronClad Assurance®, if a buyer discovers that the item is not substantially in the condition as represented in this inspection report, the buyer may submit a written dispute claim to IronPlanet. Disputes: This item is offered with IronClad Assurance® protection.
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