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| SPEAKER SETUP FOR DETECTING; Making your own | |
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| Tweet Topic Started: Wednesday 16-04-2008, 17:22 (257 Views) | |
| Wednesday 16-04-2008, 17:22 Post #1 | |
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Administrator
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Hi Everyone, For those with a little technical knowledge & wish to make their own external speaker setup for the Minelab SD series & have a signal enhancer on their setup. All you need is: 1. Soldering Iron & some resin cored solder. 2. A 5cm (2inch) 4 ohm 5 watt speaker like the one that is fitted in a personal computer for the 'beep' alarms. 3. A suitable phone-jack (same as for your headphones) 4. A short length (I only used 800mm) of single core shielded cable similar to your headphone cable. 5. A small plastic zippy box of suitable size from Dick Smith to fit the speaker. 6. Belt clip. (I used one off a measuring tape that I didn't need anymore) Most of the items I had laying around the garage & what I didn't have was available from Dick Smith for $5.00. & it works a treat. I drilled a series of small holes in the lid of the speaker box in a circular fashion to allow for the sound to be heard. Should work on the later minelab machines as well. |
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Cheers, Ted ![]() www.havewheelswilltravel.iinet.net.au "I believe that if life gives you lemons,you should make lemonade & try to find somebody whose life has given them vodka, & have a party"!!!! | |
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| Sunday 20-04-2008, 21:20 Post #2 | |
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Great setup Ted, will have to give it a go and see if i can make one. cheers for the info! |
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Don't wish it was easier, wish you were better. Don't wish for less problems,wish for more skills. Don't wish for less challenges,wish for more wisdom. | |
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| Deleted User | Thursday 24-04-2008, 17:56 Post #3 |
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Thanks Ted is a speaker for a PC OK, the external type that attaches to your PC? Or will that draw too much current, I am using a GPX4000 regards Norm |
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| Thursday 24-04-2008, 21:41 Post #4 | |
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Hi Norm, The speaker I used was out of a PC (the little one that is fitted for the Beep Alarms). If it is the same impedance & wattage (4 ohm 5 watt) then it should work. I think anything bigger then that would possible need a separate amplifier to run it. The signal enhancer (Coil-Tech) I have when turned full on is loud enough to hear comfortably. The only way is to try it & see. |
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Cheers, Ted ![]() www.havewheelswilltravel.iinet.net.au "I believe that if life gives you lemons,you should make lemonade & try to find somebody whose life has given them vodka, & have a party"!!!! | |
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| Deleted User | Friday 25-04-2008, 03:34 Post #5 |
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Thanks Ted Are the "signal enhancers" simply inline audio amplifiers, or is there more to it than that? Can you make your own for the GPX4000? regards Norm |
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| Nightjar | Monday 28-04-2008, 09:16 Post #6 |
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Contriibutor Extraordinare
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Hello Normyjohn, I believe Ted is out on the track. You can run an external speaker straight from your machine using the threshold. The only problem with this is, if there is any wind it is difficult to pick out the faint signals. Give it a try you can't do any damage. Cheers Peter |
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Good luck & safe travels Peter ![]() "Aging seems to be the only available way to live a long life." | |
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| Deleted User | Tuesday 29-04-2008, 05:51 Post #7 |
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Thanks Peter, Have you ever experimented with an Audio Amplifier Kit etc, basically that is all a Signal Enhancer is it would appear? Is there any "special" circuitry needed in one to give a steady, quiet signal? If they are only a simple audio amp then the prices charged seem a little over the top? Dick Smith has some kits, I think I might give one a try. regards Norm |
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| Nightjar | Tuesday 29-04-2008, 08:15 Post #8 |
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Contriibutor Extraordinare
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Morning Normyjohn, Have put together many of the Dick Smith circuitary models in the years gone by however never an amplifier. One problem is the power supply, most models require 12V Jaycar also have a range www.jaycar.com.au Nothing ventured nothing gained. Lets us know how you go. Cheers Peter |
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Good luck & safe travels Peter ![]() "Aging seems to be the only available way to live a long life." | |
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8:44 AM Jul 11