Threshold and depth

[KennyD]

I’ve read a few comments where some were saying that running the threshold tone increases depth over the silent search option of no threshold tone.
Is this true?

 

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[Icewing]

No.

 

[Adrian SS]

A detector that is designed as a silent threshold machine can at times match the depth of a threshold running detector however if your tecta has threshold adjust then by setting the threshold to just on silent then not much if any depth is lost but if you turn the threshold well below the silent point then considerable depth will be lost due to the target signal having to rise above the threshold setting before you can hear the tatrget signal.
My SST is silent threshold but the machine can still detect a 0.13g bit of gold as effectively as my gold bug pro in all metal mode in an air test. But If I set the Bug to a tad below silent threshold then It cuts the detection depth/distance in half for this machine.
If there is a lot of EMI about or the detector is chattering due to ground noise.then some people will set the threshold low enough to not hear the chatter which will result in lost detection depth.
Setting the threshold to just audible is ideal. Setting it loud will override a lot of target signals depending on the type of threshold operation.
Some detectors have two thresholds, one controlled by the Gain control and the other controlled by the Threshold control.

 

[yammy]

The biggest problem for me is I suffer from tinnitus and the last thing I need is a constant tone in my headphones so I set it just below audible and that works fine for me. Not noticed any loss of depth but of course as has been mentioned, if you go too far it will impact on detection depth.