Hey Virginia Beach Mike, I have tried adjusting the volumn on the Quattro from like 3 all the way up to 20 and .................

[mtdoramike]

there is no change in tone or pitch when hunting in the field or air tests. If it's an inch or 12", the pitch is or audio tone is the same at least to me. NOW, what is different between shallow and deep targets is the signal or tone is much more choppy the deeper the target.

 

[mtdoramike]

on the firing range every 6 months can make you not hear a truck running out of control through a nitro plant.

 

[Doug[Manila]]

Hi Mike,
I tried maxing my headphone volume and varying the vol on the Quattro and couldn't tell the difference either and I think my hearing is still pretty good. I have the X5 coil though so will try it again on the stock coil next week.
The farther you get from the coil the more the tones are prone I get to hear not one but two tones but that's it. Can't tell far & near on the X5.

 

[Mike (Virginia Beach)]

Well the PITCH shouldn't change...that's determined by the conductivity....I would expect the pitch to be constant.

What should change is the INTENSITY of the signal. And from what you're telling me, what you interpret as "choppy" or breaking up, I was interpreting as "deeper". Best I can do.

I also far prefer actual long-buried targets to air tests or freshly buried targets. In the end though, hearing is all subjective anyway. Maybe they should have had a separate Gain control on the Quattro. But maybe that was a trade-off in making a detector with a lot less decisions and interaction required on the end-user's part that could (and would) still go out there and get the deeper stuff that others were missing.

 

[mtdoramike]

a more choppy or raspy type of a signal, but the pitch stays the same. I have noticed on a target that's around 10"+, it's very choppy and not as solid a signal as a 2-4" target.