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DD Open and Closed Design searchcoils 

to suit Minelab GPX, GP and SD Machines

All  Detech coils are made using the highest quality materials. The housings are made of UV protected material, their inside is covered with chopped-strand material for a better shock resistance.  We use resins, which are “transparent” to the electromagnetic waves, and offer  perfect shielding.  The coils are water proof and operate in a wide temperature range.  The searchcoils are all equipped with an excellent fitting cover, (skid plate) and have a two year full warranty.  Excellent equipment for Detech Metal Detecting in Australia, suited to Australian prospecting conditions

Detech Australia, gold, coin and relic coils and machines.
8" DD Closed Design ​$285  690g​  
Great Coil

For Minelab GPX, GP and SD Series detectors. 


Enables the use of iron reject.

For those with older machines, this coil is your answer for stability of the DD and the dynamite performance of a mono.  Designed to seek out those small nuggets left behind by others.  This coil will turn older machines into a small gold weapon! 

This closed style 8" DD is robust in construction, featuring a close fitting skid plate and strengthened shaft mount.  Tested in the Victorian Gold fields.  Smooth running coil, wound with Litz wire. 

2 year warranty.  Fully waterproof.

Detech Australia, gold, coin and relic coils and machines.
12.5 DD Closed Design $324 1050g

2-3 week delivery

 For Minelab GPX, GP and SD series detectors

​​12.5” DD solid design coil this is a classic coil.  Very stable, no false signals, able

to work in difficult soils and locate smaller nuggets as well as larger deeper

GOLD with this coil you can use your discrimination on your machine.


Detech Australia, gold, coin and relic coils and machines.
Detech Australia, gold, coin and relic coils and machines.
15 x 8" DD Elliptical Closed Design
NEW Now available

$372  970g

For Minelab GPX, GP and SD Series

This is a classical 15 x 8 Elliptical coil now available in DD.

Same operation as the 12.5" DD, with the Elliptical shape to allowing you access to tighter areas.

Another option for older machines that require DD coils.

18" DD Open Design $351 985g

​ For Minelab GPX, GP and SD series.

2-3 week delivery


18” DD open design, this large double D coil will give you great ground coverage and added stability to your machine over difficult ground, gain extra depth with this coil and search previous areas to see what lurks below.



Detech metal detectors Australia, Detech gold detectors Austalia, gold prospecting Australia, gold prospecting, metal detecting australia

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Detech Australia, gold, coin and relic coils and machines.
18" DD Closed Design Coil

2-3 week delivery

$451  1460g

For Minelab GPX, GP and SD Series

18" DD closed design coil, similar to the 18" DD open design, giving you different options.  With great coverage over difficult terrain.

and added stability over the mono coil in highly mineralised areas.

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