Minelab Dual Channel Receiver Response

[BigWave]

I have heard bits and pieces of the Minelab GPZ ( and certainly older units) having dual receiver processors.
On the GPX, I understand that the two channels parallel process both Small/shallow and Large/deep signals and decide which to sound in the audio.
Can anyone confirm this as I have had similarly sized nuggets being individually processed as uppers and downers, and have had a few large ones that give really loud but ****** signals, as though the two receivers are overriding each other as the coil moves over them (i.e.: high/low/high/low/high). I always expect double dips from nails etc, but I have now had two great gold pieces giving this ****** response (almost the same size around 1.6g and oddly shaped). Almost didn't dig today's one, but it came in at 1.8g.

 

[Bjay]

Don't have a gpz yet but have got some good targets with the 5000 that sound like what ya saying. Wouldn't normally dig some but have since learnt that they can give some pretty freaky noises.

 

[SteelPat]

Cant talk about the 5000 as I havent had one nor have I seen a circuit (not sure that one exists outside of Minelab office cos I have done a thorough search lol).
I have a few circuits of earlier Minelab PI units and they certainly do use multiple receive channels.
I havent seen a circuit of a Z (they havent even got much detail of that in their patent or whitepapers) but the gold I have found makes all sorts of different sounds depending on weight, shape and depth.
I have found with the Z its not the sound you listen for - its a change/break in the threshold. And then it must be a repeatable signal for me to dig it.

 

[bbrook]

Got a really weird warbley target with the 4500 yesterday .I dug down a bit and hit a pocket of grey dirt and thought that was it , but it turned out to be a chunky .74 gm . It sounded like a bit of bent wire from the top . Got a similar one close by that was a nice inverted signal so I guess it might have just been on the edge of inverted / normal response and confused the machine

thanks Brett

 

[Davent]

I know what bloody .303 shells sound like.....my appologies

 

[BigWave]

Thanks davent. It wasn't quite the feedback that I was seeking, but your response is noted.