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HEADPHONE REPLACEMENT

R

RANGER6

New member
IM THINKING OF REPLACING MY KOSS HEADPHONES ON MY EXCAL11 WITH THE GREYGHOST AMPHIBIANS. WHEN I WENT TO ORDER THE GG, I WAS TOLD THAT YOU LOSE ALOT OF VOLUME. ANYBODY OUT THERE EVER REPLACE THE KOSS WITH THE GG AND HAVE THAT PROBLEM. I WOULD LIKE SOME INFO BEFORE I SPEND $150.00 THANKS
 
The Grey Ghost Amphibians are OK and give good volume with the Excalibur.

The Grey Ghost Underwater headphones in standard form do drop volume when wired in to an Excalibur. It is reported they work fine with other detectors, just not the Excalibur. The fix is to remove the impedance matching transformer in the headset. The transformer is buried in a puck of hot glue. It can be softened with a heat gun and picked apart until you get the transformer out and expose the wires. Remove the transformer and wire the speakers back in without the transformer. Be careful not to heat the backshell too much or you can warp or otherwise distort the backshell and it won't pop back together.

Here is OldBeechnut's video of the sound level difference with and without the transformer. He gets all the credit for figuring out this fix! https://www.youtube.com/watch?v=7MOtoteyF6A
 
Have put the Amphibians on a couple excals I've had. No transformer, straight wired, no loss of volume. On my last one, I just cut/pulled/re-used the wire from the Koss headphones and rewired it inside the Amphibians (soldered, sealed with liquid tape and E6000 glue over that, worked great and didn't have to get into the excal endcap.
 
This is what I end up doing with all mine. Not real hard to do and takes very little. Way cheaper then buying a complete new set of headphones.
 
For those that aren't familiar with these. They're hearing protection muffs. Very easy to switch the speakers over. No cutting or splicing or soldering. I prefer the sound the Koss phones produce just never liked how loose they fit. Way too much wind noise. This mod is very popular, easy to do and the audio is awesome. Joe
 
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