5 posts in this topic
By Ridge Runner
I was looking over on Chris Gholson forum and he's got the new Garrett Z-Lynk for 127.46 with free shipping. He is also putting your name in the pot if would like the new Minelab Pro Sonic for 269.00 plus free shipping.
I'm just wondering if the one that has a higher price that much better than the other ? I know Minelab puts out a great product and as far as I know always has. But is the added 141.54 better than the American made one.
I can't go out and buy both to find the answer to my question so I hope over time you can.
By Steve Herschbach
New Product - PRO-SONIC Universal Wireless Audio System - Coming Soon!
Minelab is pleased to announce that our newest accessory, the PRO-SONIC Universal Wireless Audio System will be available soon. PRO‑SONIC generates clear and fast audio responses using advanced wireless technology. It's easy to set up and go detecting, with no messy cables to get tangled in!
The PRO‑SONIC Receive Module features an internal loudspeaker and a 6.35mm (¼") headphone socket for use with your choice of headphones. It can be attached to your harness or clothing using the metal belt clip.
Use headphones or built-in speaker Adjustable volume setting 10 m / 32-feet operating range SDC 2300 adapter cable included Charge from your car, AC power or USB charger Compatible with most Minelab and other brand detectors! Download the color brochure
I have often wondered if the detector itself is more sensitive than the speakers that it has and even though the signal is there we don`t hear it.
Perhaps a speaker with some kind of a meter that would indicate we are passing over a target even though the speaker is silent
I`m sure there are meters that could indicate the presence of such signals, perhaps big gold at more depth?
I couldn’t find a wireless delay specification for the GPZ 7000 WM 12. So I tested it. The attached oscilloscope display is the audio waveform envelopes from a US nickel passing over the GPZ-19 coil at approximately 40 inches per/sec.
The upper yellow waveform is from the earphone jack on the back of the GPZ 7000. The lower green waveform is from the earphone jack of the wireless WM 12 receiver.
The waveforms are sweeping in time from the left side to the right side. The entire display is divided into 10 horizontal increments of 50 milliseconds (0.050 sec.) each. The audio (wah-wee sound) created by the nickel is spread across 9 divisions (450 milliseconds) with the nickel crossing the center of the coil at approximately 4.5 divisions (225 milliseconds). Close measurement of the green trace displacement to the right indicates that the wireless WM 12 receiver audio is delayed by 20 milliseconds.
The nickel speed of 40 inches per second is equal to 1 second divided by 40 = 0.025 sec. = 25 milliseconds to move 1 inch. So a delay of 20 milliseconds is less than a 1 inch position error which would be imperceptible during normal searching. When slowed down to pinpointing speed it would be a minuscule error.
A 50 ms delay would result in an approximate 2 inch position error which at sweep speed is probably not that noticeable to most of us. Again at pinpointing speed it should not be a problem.
For information; the scattered positive and negative spikes are noise spikes from the GPZ 7000 transmitter pulses. The wide bandwidth / fidelity of the oscilloscope allow it to capture these spikes. The spikes are too high in frequency for the human ear to hear. Electromagnetic Interference (EMI) that we randomly hear resembles the waveform envelopes shown in this display.
This is somewhat technical so I hope I have made it understandable to some.
Have a good day,