der vollständigkeit halber nochmal die aussage aus dem minelabownerforum mit dem vergleich ctx und etrac:
http://www.minelabowners.com/forum/f179 ... ndex2.html
"he real improvement of the CTX over the E Trac is in the the discrimination. You can now change all the parameters of the tone profiles.
What's going to be the killer for experienced E Trac users is the combine tones target ID profile.
On the E Trac I use conductivity sounds, multi tone, and smooth sound process. This gives nice smooth signal responses to small hammered coins in the medium to low tone range. I then stick in some minimal discrimination in the form of a tadpole along the bottom of the screen.
This is to try to chop the responses of iron, to stop making their high tones sound smooth..... and herein lys the problem.
Iron on the E Trac reads high conductive and sound similar to copper on the E Trac. Because deep high conductive non ferrous targets tend to chop at depth, they get missed!
Switching to ferrous tones fixes this on the E Trac, but then you're into a situation where deep low conductivity targets fall lower in the the E Trac screen towards the iron responses.
The CTX has addressed this with a combined tone ID profile. It's a conductivity four tone pattern, with a single ferrous tone pattern underneath. The parameters are fully adjustable, you can change the sizes of each segment..... and more importantly each segments tone. So now for the first time you can use conductivity sounds, and control the iron tone separately. This one feature means I dig lots more large targets every detecting session.
As I said in my earlier thread, the CTX isn't any deeper than the E Trac, but the improved tone ID discrimination means you can now identify deep targets you were previously dismissing as iron. "
zusammengefasst: ctx 3030 hat die selbe tiefenleistung wie der etrac, nur mit besserem discriminator. jedoch wieviel besser, das ist die frage. denke aber nicht das der unterschied den aufpreis von über 1000€ gegenüber dem etrac zu rechtfertigen.