Minelab GPX-4000 Reviews, Price and Specifications
Gold Nugget/Prospecting Pulse Induction (PI) Metal Detector
Retail Price: $4,500
Avg. Rating
(5.0 Stars) 
Specifications:
- Weight Complete with 11" coil (excluding battery and accessories): 2.4 kg (4.8 lbs)
- Configuration: Shaftmount: 2-piece shaft
- Technology: Dual Voltage (DVT) and Multi-Period Sensing (MPS)
- Transmission: Bi-level Pulse Induction
- Search System: Motion Detector
- Headphones: Supplied 1/4" socket, Koss; 100ohm
- Coil (Standard): 11" Double D
- Battery: Lithium Ion, 9.2ah: 7.4v (Weight: 870g)
- Battery running time: 12 hours +
- Battery Charging System: Mains and 12v vehicle
- Search Modes: Patch / General / Deep
- Soil / Timings: Sensitive / Normal / Salt
- Ground Balance: Fixed / Tracking
- Ground Balance Speed: Slow / Medium / Fast
- Ground Balance Type: General / Specific
- Motion: V-Slow / Slow / Medium / Fast
- Response: Normal / Inverted
- 2 years Warranty for Electronic Box
- 1 year Warranty for Coil
Reviews:
2 Meteorites found on first day!!!
by Kevin Thomas in Prescott Valley, Arizona USA -
I bought this metal detector on Saturday and on Sunday went to a friends claim in the Bradshaw mountains to familiarize myself with it. Within 2 hours I found 2 iron nickel meteorites. I had found a meteorite in this area 2 years ago with a Goldmaster II so I had a "known" location to work. This detector picked up the 2 additional meteorites in the same area I had searched 2 years earlier!!! I am beyond happy with this metal detector. Goes deep.
Nov 15, 2011
Great Detector
by Guest in Australia -
This is a great machine but lacks sesitivity to small gold because it is an PI detector, the main claim to fame is that it works in highly iron mineralised ground. In zero to moderatly mineralised ground a Good VLF detector with similar power output and coil size will out perform it in all respects with the exception that it is not as sensitive to some hot rocks as VLF's can be. Regards, Goldfinder
Apr 18, 2008
If you have another metal detector, treasure hunting system or metal detecting equipment of any sort, and would like to leave a review for it, please do so > > > back to Metal Detector Reviews Directory page.
If you would like to read my in-depth articles containing useful information on important subjects related to the hobby of metal detecting and treasure hunting, such as types of metal detecting activities and metal detectors required, how to research for productive hunt sites, which search techniques and methods to use for specific detecting tasks, and much more, please visit my directory pages:
• In-Depth Articles on Metal Detecting
• Expert Guides for Detectorists