Minelab 18" Round Commander Double-D Coil for GPX, GP, and SD Series Detectors

The Minelab 18" Round Double-D Commander coil is the largest, deepest-reaching coil in the Commander line - built for prospectors chasing deep gold and large targets in mineralized ground. On the GPX 5000 and GPX 4500, the 18-inch DD footprint delivers maximum ground coverage and depth penetration, reaching nuggets that 11-inch and 15-inch coils simply can't. You trade small-nugget sensitivity and maneuverability for pure depth — the coil that finds the deep gold that justifies the trip. It fits the full range of Minelab pulse induction (PI) metal detectors in the GPX, GP, and SD series and ships genuine from an authorized Minelab dealer with coil cover, mounting hardware, and full manufacturer warranty.

Why GPX & GP Owners Reach for the 18" DD Commander

• Maximum depth penetration. The 18-inch double-D design reaches deeper gold in mineralized soil than any smaller Commander coil - the tool for targets beyond the range of 11" and 15" setups.
• Widest ground coverage. The round 18-inch footprint covers the most area per swing in open goldfields, cutting the number of passes to clear a claim.
• Smooth in mineralized ground. The double-D winding steadies ground response where smaller coils chatter, letting you hold higher gain over hot rocks and iron-rich soil.
• Rugged prospecting build. Multi-strand Litz wire and gold-plated plugs survive the heat, dust, and impact of hard fieldwork. New to coil trade-offs? See our coil size, shape & configuration guide.
• Full MPS performance. Engineered to match Minelab's Multi-Period Sensing requirements on GPX detectors for the platform's full depth potential.

Best Uses for the 18" DD Commander Coil

Open goldfield prospecting for deep, larger gold

The 18-inch Commander excels in open terrain where depth matters more than small-target resolution. GPX 5000 and 4800 operators working claims with scattered larger nuggets gain an extended detection envelope - the double-D winding reaches deep gold smaller coils miss. Its size rewards slow, deliberate sweeps to hold ground tracking; experienced prospectors adjust Rx Gain and stabilizer settings to balance depth against ground noise. Not the coil for sub-gram gold, but the one that reaches the deeper, larger finds. Explore more gold prospecting detectors and setups.

Hot-rock and iron-rich desert ground

Mineralized ground challenges every detector, but the Commander is built for it. We run this coil on Nevada and Arizona desert claims where smaller coils chatter constantly - the 18-inch footprint smooths ground response paired with a higher stabilizer setting on the GPX. Detectorists working old diggings accept the reduced maneuverability as the price of reaching gold below the worked layer. New to an area? Start with where to go metal detecting, or read how metal detectors work to understand PI depth.

Specifications

• Compatibility: Minelab GPX 5000, GPX 4800, GPX 4500, GPX 4000, GP Extreme, GP 3500, GP 3000, SD 2200d, SD 2200v2, SD 2100e, SD 2100v2, SD 2100, SD 2000
• Coil Size: 18 inches (46cm) round
• Coil Winding: Double-D (DD)
• Water Protection: Water-resistant (not submersible)
• Cable: Low-noise shielded with gold-plated connector
• Construction: Multi-strand Litz wire
• Included Accessories: Coil cover, mounting hardware
• Warranty: Minelab manufacturer warranty

Why Buy from Serious Detecting

We're an authorized Minelab dealer, so every Commander coil ships with the full Minelab manufacturer warranty. Our team has run GPX detectors with Commander coils on prospecting trips across the Southwest - we answer setup and compatibility questions from field experience, not a spec sheet. Browse the full Minelab detectors & accessories range or the complete metal detector search coils catalog to compare sizes and windings. Free shipping on orders over $99, 30-day returns, and a price-match guarantee.