Minelab GPX 5000 Gold Nugget Detector
The Minelab GPX 5000 detector was released in the fall of 2010 and is currently still in production. I got one the same year and have been using the Minelab GPX 5000 ever since. See First Alaska Gold with the Minelab GPX 5000 at Steve's Mining Journal.
The Minelab series of pulse induction (PI) metal detectors starting with the SD 2000 are widely acknowledged as being some of the most powerful gold nugget prospecting detectors currently available. The GPX 5000 is the latest and most refined in the series. I can say that having used all the models the changes from model to model were gradual, but the difference between a Minelab SD 2000 and a Minelab GPX 5000 is nothing short of astounding. Minelab has dramatically refined this technology over the years. See Steve's Guide to Differences of Minelab SD, GP, & GPX for details.
I believe that Minelab has really squeezed about all the performance I think I can expect out of a pulse induction (PI) with the GPX 5000. The stability, depth, and sensitivity are superb, as is the ability to adjust the machine to handle almost any ground mineralization or hot rocks that may be encountered. There are only two things that I can see that realistically can be improved on at this point. First, the the iron discrimination system, which is unreliable in general and of no use at all on deep targets.
Second, the overall physical package, which has changed little since the SD 2000 first came out. The harness and bungee system is actually quite effective and comfortable for long hours of detecting but the separate battery and lack of speaker are an issue. However, it is possible with modern high capacity batteries to eliminate the separate battery/cable system and add an external speaker. Minelab would then be doing for people what many are now doing with aftermarket add on equipment.
Still, there is no doubt at this point that for the serious, dedicated prospector, the Minelab GPX 5000 represents the current state of the art in pulse induction detectors. It is the detector of choice for many prospectors around the world.
Download the Minelab GPX 5000 Instruction Manual Here
Minelab GPX 4000-5000 Manuals & Timings Charts
Beginner's Guide to Tuning the Minelab GPX 5000
|Technology||Ground Balancing Pulse Induction (GBPI)|
|Autotune (Motion) Mode(s)||Very Slow, Slow, Medium and Fast|
|Ground Rejection||Slow, Medium, Fast Tracking, Fixed, and Off|
|Soil Adjust||Eight settings (timings) - see chart below|
|Discrimination||Variable 1-10 and Off in Menu|
|Volume Control||Variable 1-20 in Menu|
|Threshold Control||One turn control|
|Tone Adjust||Variable 1-100 in Menu|
|Audio Boost||Quiet, Normal, Deep, Boost in Menu|
|Frequency Offset||Automatic Tune plus Manual 0-255 in Menu|
|Audio Output||1/4" headphone socket (No speaker) Headphones supplied|
|Hip Mount||Shaft Mount Only|
|Standard Search Coil(s)||Commander 11" round (Double D)
Commander 11" round (Mono)
|Optional Search Coils||Over 100 accessory coils available|
|Battery||Rechargeable 7.4VDC 9.2A/hr Lithium Ion|
|Operating Time||14 - 15 hours|
|Weight||5.3 lbs (w/11" coil, excluding battery (1.7 lbs)|
|Additional Technology||Multi Period Sensing (MPS)
Dual Voltage Technology (DVT)
Smart Electronic Timing Alignment (SETA)
Numerous Audio Adjustments via menu
Coil (Double D/Mono/Cancel) - 3 pos. switch
|Notes||The GPX 5000 employs an external battery carried on a backpack harness and connected to the control box via a power cord. The detector is normally suspended from the harness with a bungee cord, allowing for nearly weightless operation in level ground.|
*Notes on Technical Specifications - Detailed notes about the specifications listed in this chart.