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<blockquote data-quote="PhaseTech" data-source="post: 121187" data-attributes="member: 3149"><p>I ran a homemade regulator set to 6.9v on the GP extreme, running a Coiltek 11" Mono and a 14" DD Pro, and found it made the machine purr all day. On the GP3500 for some reason I think it made the machine more erratic. After some more experimenting on the 3500, I tended to prefer the 15x12" DD Commander with stock battery. When I got my hands on an 11" DD Pro coil, I played around more with the regulator and running it on 6.7 V was magic on the 3500. Running that coil in Medium tracking on some well mineralised patches got some good nuggets at depth. </p><p></p><p>Regarding boosters, I tended to always prefer a quality set of headphones, but when you needed the extra volume, the Coiltek mini booster did the job nicely. </p><p>If you want to run an external speaker, I have always preferred a battery powered booster in preference to an inline one, as the inline one's always seemed to distort or colour the sound. </p><p></p><p>Hope this helps.</p></blockquote><p></p>
[QUOTE="PhaseTech, post: 121187, member: 3149"] I ran a homemade regulator set to 6.9v on the GP extreme, running a Coiltek 11" Mono and a 14" DD Pro, and found it made the machine purr all day. On the GP3500 for some reason I think it made the machine more erratic. After some more experimenting on the 3500, I tended to prefer the 15x12" DD Commander with stock battery. When I got my hands on an 11" DD Pro coil, I played around more with the regulator and running it on 6.7 V was magic on the 3500. Running that coil in Medium tracking on some well mineralised patches got some good nuggets at depth. Regarding boosters, I tended to always prefer a quality set of headphones, but when you needed the extra volume, the Coiltek mini booster did the job nicely. If you want to run an external speaker, I have always preferred a battery powered booster in preference to an inline one, as the inline one's always seemed to distort or colour the sound. Hope this helps. [/QUOTE]
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Metal Detectors
Detector Accessories
Amplifier/speaker/signal booster information
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