SDC2300 Info
Do you want to run a booster on your SDC2300? The audio quality of the speaker is actually extremely good, but the placement is not so good. I guess that it had to be fitted into the case structure and that was the compromise in terms of placement. It would suit the left handed operators as the speaker then faces them directly, and for right handed people the speaker will do the job on most occasions except for when the wind picks up, as the speaker is then hard to hear. The Solution. I run a bungy cord on my detector because I like to be comfortable, and that allows me to concentrate on detecting and not my aching arm or whatever the case may be, so being tethered isn’t an issue for me. (The ProSwing 45 is good for this job, or you  can buy the ProSwing repair kit and use the velcro on attachment and bungy cord on your own harness) I also use a hydration pack so that I can detect and drink water at the same time, so it made sense to me to utilise the system I had and was used to. So, as I already had my hydration pack equipped with a B&Z booster with twin speakers, why not use that to my advantage? This system requires a B&Z booster/speaker combination in either the single speaker or twin configutation. The new model B&Z now has a replaceable input cable. One end of this cable plugs into the B&Z booster while the other end would normally go to the SD/GP/GPX battery audio port. We connect this end into an audio curly cord which gives us enough length to reach the detector. That cord the connects to a patch cable that has the special connector required to fit the SDC audio outlet. The sound then goes to the booster where we can control it by using the switch in the bypass position to dull to a very low level for more discrete target retrieval, or the boost position where we can then control the volume level with the knob. In boost the knob will be around the 3 position for ample volume levels. The image below shows the basic connections and we also keep all these items in stock.
The input cable for the B&Z booster normally would connect to your SD/GP/GPX battery which is usually in a pouch in the centre of your back for most harnesses, so the input cable would normally be in that area. That works for the SDC2300 also as the audio curly cord can be run into this pouch through the hole that the battery power cable would usually exit and then it connects to the booster cable. When we want to use the B&Z system on our SD/GP/GPX detector we don’t need the patch cable nor the audio curly cable. Those 2 cables can stay with the SDC detector as they are specific to it. There is now an alternative curly cable which has a straight male jack on one end and a 90 degree male jack on the other end. Using this allows the straight replaceable cable that connects to the booster to be eliminated entirely (kept as a spare) and is able to be used on both the SDC and your SD/GP/GPX detector as applicable. We have this cable in stock. SDC2300 power off Some people are having an issue with the SDC2300 shutting down and then immediately firing back up. Minelab recommend that the Battery cas lid is put on squarely and not at an angle as the springs may not contact the battery ends properly. I had this issue and noticed that the ends of the batteries acquire a deposit that I guess occurrs from the batteries rubbing together. As we are dealing with low voltage it doesn’t take much to lose the connection. I started cleaning both ends of each battery before I inserted them into the case by simply wiping them on a clean part of my shirt. This removes any residue that may be there, and I have taken particular note ot the results. My SDC2300 has not done this shut down and restart since I started wiping the batteries, so give it a go.
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Why does the SDC2300 beat the more expensive Minelab PI detectors? To explain this we need to know a little about how these detectors work. The coil transmits a magnetic field generated by a pulse of current, or a series of pulses. This magnetic field causes “Eddy Currents” to flow in any metal or mineralised object within reach of that field. When the detector stops the pulse train, we need to wait for the coil voltage to essentially fall to zero before we can use the coil as a receiver (an aerial), to pick up the tiny magnetic fields generated by the flow of eddy currents in any object within range. The electronics process these as a signal and gives us an audio output to alert us that there is a target within range. The amount of time that the eddy currents flow before dissipating is generally known as the ‘decay time”. We can influence these targets and the decay time by using different sized coils. Small/shallow targets can have their decay time lengthened by switching to a smaller coil which has more turns of wire in it, and therefore will emit a stronger magnetic field, and in turn, the edddy currents generated in the target will be stronger, so the decay time will lengthen. We can cause a similar scenario by changing the detector settings or timings. The “sample delay” (time needed to let the coil go to zero) needs to be longer than the decay time, otherwise the target is not detectable. The SDC sample delay is so much faster that conventional PI detectors that it is able to detect nuggets and specimens that conventional PI detectors ignore due to the decay times of those targets. This is the MPF (Multi Period Fast) technology that Minelab have introduced into the SDC2300. Coupled with a “smooth” type of timing and an appropriate motion filter, the SDC can sample extremely quickly, yet still ignore the ground noise normally associated with a fast sample delay on a PI machine. Due to the above the SDC2300 is capable of detecting nuggets and specimens that other PI detectors will not detect regardless of what settings or coil that detector utilises. These are not always small nuggets as some specimens that hold a considerable amount of gold may be completely ignored by the othe PI’s because the gold is very fine and disseminated, whereas the SDC will easily recognise them. Couple that with the ability to basically ignore most ground, hotrocks and interference (EMI) and we have a brilliant little package that is easy to use, powerful, and suits beginners to a tee.