Ctx3030 Headphones hum

[Dave8472]

If it is the background level, for detecting nulled out iron you can alter the volume level independent of the wanted signal level and the pitch of the tone I changed both to a more comfortable setting, but you can turn the sound off all together but I wouldn't recommend it

Dave &*(

[Tomo]

The hum is the threshold. Turn it down till it just say goes silent

[chefphones]

As has been said the hum is your threshold, the CTX is a threshold machine. You could turn it down so that it is longer audible but then you would also have no idea of the iron present.
Remember that when the machine nulls over iron it isn't actually detecting until it recovers, so the more iron contamination you have the slower you need to swing to allow the CTX to recover. If you can't hear the null then you could be happily swinging away all day on a heavily contaminated site and not actually detecting anything.

[slashter]

Fancy asking that question..eh Geoff???....I would never have asked you about the funny hum on the etrac would I?

[chefphones]

LOL....never Tim, not in a million years mate