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Narrawa said:Just as an example.......With The MXT and the GMT they are VCO based so they do Not Need A Volume Control because the stronger the signal the Louder the it responds,
Im not in the habit of over-gaining the detector in order to here targets on ground that calls for low gain employment. And with VLFs, this is easily done in OZ.
There are many makes and models using VCO audio...and many of these other makes and models...including other Whites machines have basic volume controls..... my V3I has three separate gain controls allowing me iron audio + volume and various other audio functions. Other Whites machines have separate gain controls and volume controls allowing the operator to adjust both gain and volume separately.
Whits has had many attempts at bettering the MXT model which is a brilliant machine....sadly they have not implemented this basic functionality in one of their most popular models.
Other makes and models also use the same gain regime as that which is found on the MXT/GMT...yet they saw the need to not combo the pots and gave the end user some basic volume adjustment.? So how many volume controls does a machine need you ask.?...Just one thats independent would have been a nice feature to a very popular make/model.....the All pro is what?.....Whites 3rd attempt to better this model.?
My partner uses her MXT round me a lot, and the noise from it is mind blowing to the point i tell her she is better off using one of the other detectors, just so i dont have to listen to it.
Whilst there are fors and against positive GBing, the primary function is to zero the ground in order to make targets stand out above that of the ground signal. Lifting the coil above the ground is no different to turning down the gain. Your better off GBing to zero and keeping the gain as high as the ground will allow...each to there own on that one. However, having the ability to override the electronics on units that dont always get it right is a plus.
As for the GPX series having a grab button...no such thing...it does not grab the ground like that of the VLFs that employ it....as the user of a 4500 since it came out, perhaps you should do a little reading on how the Quick Track actually works...both in Fixed and Tracking......which Proves that Manual GB is of no real Benefit, and such things are more of a Matter of WANT than NEED, A GP/GPX does not need it and they are the Best Gold prospecting Machines ever Produced and the GP/GPX have a Grab Type Button Called (Quick Track).
Pge 22-24 of the PDF formate...not the actual page in the owners manual...which is 38-42.
https://www.minelab.com/__files/f/3965/4901-0063-1.1 Instruction Manual GPX-4500_screen.pdf
First Off Narrawa, Let me say that You are Great at thrashing out the Virtue's of these Machines and I am really enjoying pulling apart the Pros and Cons of these Machines with you. So Thanks for That.
Second,, you are A Brave Man Going Toe to Toe with the V3i,, I have always wanted One, But with my short Fuse it would become A Tree Ornament, So You have my Respect there Too
When I got my first MXT I thought what the hell have I done My Minelab use to sing too me, And this One was Like dropping Granny off at A Heavy Metal Concert, My brains were fried Just like it got to you,
Then after about a week I worked it on and suddenly I was finding Gold, Silver and Ancient Bronze Coins and then it all made sense and I have never looked back,
As for the Quick Track Button its been 7 or 8 years since I last used my GP so forgive me if my memory is lacking, In the end I sold it for about 12-1300 Dollars, Not the Brightest thing I ever did. I will check out that Link so Thanks for that.