aurum Posted November 3, 2006 Report Share Posted November 3, 2006 I am looking to purchase a new 4000 but am curious if there is an external speaker which could be used on it. From my understanding anything which was compatible with the 3500 is not compatible with the 4000. Quote Link to comment Share on other sites More sharing options...
scorpion Posted November 3, 2006 Report Share Posted November 3, 2006 I would think that if the GPX is using the same or equivalent to the KOSS headphones sold with the SD and GP series than the current external amp speaker/headphones would work. The external amp just has to be able to handle the power, impedance and mono or stereo signal (which ever it uses) that the GPX sends out to the stock headphones.Colorado Bob and Rob Allison have used the unit and can answer more correctly though than I can! For me it is just a seat of the pants guess ..sort of..kind off. Good Luck.RegardsKarl Quote Link to comment Share on other sites More sharing options...
Admin nuggethunting Posted November 4, 2006 Admin Report Share Posted November 4, 2006 Hello Aurum, I would first like to welcome you to the forums! At this point in time since Minelab changed the connection from 4-pin to 5-pin there isn't anything that will adapt. However, I have heard several companies are currently working on some products that will work on the new GPX-4000. I'm sure if someone wanted to fiddle around they could make something work, but technically that would void the factory warranty. The Minelab GPX-4000 comes stock with Koss UR-30 headphones. They are a good mid-line headphone in my opinion, but not the best. I still have a couple of GPX-4000's in stock if you're searching for one, but don't expect them to stay around long. Hope this helps a bit,Rob Allison Quote Link to comment Share on other sites More sharing options...
Steve Herschbach Posted November 4, 2006 Report Share Posted November 4, 2006 Hi,Just a note. Any inline amp that draws off the Minelab power supply will not work at this time. But any amp with it's own power supply will. Yup, time to dig out that cheap little Radio Shack I've got somewhere!Steve Herschbach Quote Link to comment Share on other sites More sharing options...
grubstake Posted November 4, 2006 Report Share Posted November 4, 2006 Heres the answer for now! Go to Walmart and buy a ampifide external speaker for an iPOD, it has two speaker, but has an 1/8 inch jack, get a 1/4 inch mono adapter, it takes one AA batery, only an on off switch no volume, jack it in where your headphone would go, Bingo, external speakers. I use one it works good. just go to http://www.maclly.com and look. Grubstake $27.00 Quote Link to comment Share on other sites More sharing options...
DOC Posted November 4, 2006 Report Share Posted November 4, 2006 Rob has forgot that he has the DE-Tac Signal Enhancer with battery that works on any detector. It is an inline amplifier it plugs into the headphone jack and your headphones plug into the amplifier, it uses a 9 volt battery. Rob the item number is ac-seb.DOCHello Aurum, I would first like to welcome you to the forums! At this point in time since Minelab changed the connection from 4-pin to 5-pin there isn't anything that will adapt. However, I have heard several companies are currently working on some products that will work on the new GPX-4000. I'm sure if someone wanted to fiddle around they could make something work, but technically that would void the factory warranty. The Minelab GPX-4000 comes stock with Koss UR-30 headphones. They are a good mid-line headphone in my opinion, but not the best. I still have a couple of GPX-4000's in stock if you're searching for one, but don't expect them to stay around long. Hope this helps a bit,Rob Allison Quote Link to comment Share on other sites More sharing options...
impactco Posted November 4, 2006 Report Share Posted November 4, 2006 Rob has forgot that he has the DE-Tac Signal Enhancer with battery that works on any detector. It is an inline amplifier it plugs into the headphone jack and your headphones plug into the amplifier, it uses a 9 volt battery. Rob the item number is ac-seb.DOCI have been using the one (ac-seb) that you shipped to me with the 4000 and it works great! Thanks Doc. Quote Link to comment Share on other sites More sharing options...
aurum Posted November 4, 2006 Author Report Share Posted November 4, 2006 I thankyou for the welcome and replies. It is much appreciated. Quote Link to comment Share on other sites More sharing options...
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