[johan112]

Hello if got a new velleman cs100n thing is what i dont understand is on all none metal objects you can hear a tone difference when in contact as soon as its steel sound go away completely and you should addjust the sensitivity to the 0 As soon as i place it on the ground the needle goes toe the 4 left uand side why

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[Paul van Heerden]

I cannot help you with that detector, as  do not know how it works. Is there a manual that came with it?

[johan112]

There is yes but foed not state to why itd doing that

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[johan112]

Does not sorry

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[Tony Curnick]

Johan..I don't know much about your machine but just looking at the controls it looks to be a pulse induction machine.These machines have a constant background hum known as the treshhold..This hum will be disturbed by a metal object under or near the coil so telling you that you have found a target...

[johan112]

Yes it keeps on humming when it detects metal it goes Quiet when detecting  brass or other copper there is a tone difference every body is using a ace 250 is it a good machine good performance? 

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[Paul van Heerden]

Yes it keeps on humming when it detects metal it goes Quiet when detecting  brass or other copper there is a tone difference every body is using a ace 250 is it a good machine good performance? 

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I have had my 250 for nearly 2 years, and it is a great machine. I have found lots with it. I am now thinking of upgrading, but not because I hate the 250. I just want to have a bit more discrimination and depth. Ground balancing is also something I want in a detector

[johan112]

Hahaha sell me you 250 and that way you are funding your new one hahaha how deep will you say can it detect is good depths

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[Paul van Heerden]

Hahaha sell me you 250 and that way you are funding your new one hahaha how deep will you say can it detect is good depths

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I would say the 250 can realistically reach depths of about 15cm, maybe a bit more

Unfortunately at the moment I am only thinking of upgrading. Finances do not allow for me to actually do it

[johan112]

I saw a two box metal detector rather expensive but they say depths is extremely good 

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[Paul van Heerden]

I saw a two box metal detector rather expensive but they say depths is extremely good 

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A 2 box detector is not what us hobbyists use. They are for some serious detecting, and not for us