You should produce the TDI Pro again and incorporated at least the noise reduction used on the SL. Reg Sniff did some outstanding work on the TDI range detectors. It would be nice to see all of that built in a new generation of the TDI Pro. You would also create a hard time for ML.
The TDI S/L at best gets about 70% of the depth you get on the TDI Pro.  When doing side by side tests, it is more inline with the Duel Field Surf PI in wet salt water sand.  Here is a side by side with other machine vs the TDI Pro ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3pNtGN6rWYk.html
Absolutely. If you go to the same place often, you'll find you don't have to adjust all the knobs, you could just leave them alone. All the knobs do serve a purpose though.
i would really love to try a whites tdi on my local beach but at present dont have money for another detector....i have a whites dfx which is a great machine but tdi seems to have raw depth.
Good finds, i have the surf pi pro and i find canadian dimes at up to 12 inches easly, our dimes are steel, all your digs wernt that deep about 8 inches, how much better depth do you get, on the surf pi pro i put the gain over 3/4 and put the threshhold a little lower than nornal, this makes less flase signals when raising the coil on the wet sand, at this setting signals bang loud over 1 foot on small coins or gold
I use my Surfmaster PI Duel Field when diving or wading deep and falsing is never an issue even at high gain.. When working wet sand or shallow wading, the TDI Pro is much deeper than the Surfmaster PI. I have done side by side comparisons and clearly repeatable signals with the TDI did not even register on my Surfmaster PI. I called Whites to find out why and spoke with Todd in engineering; he claims the TDI Pro puts out a lot more power.
DetectorComparisons Very nice videos! Could You elaborate more on the TDI vs. Surfmaster depth difference in wading and the tests You made ? Are we talking of just one inch or more?
.DC caught your comment below saying the tdi went deeper in salt sand than the surfmaster pi pro which i planned on picking up so if you could give some details as to how much/little difference in inches between the two i'd appreciate it..measured my excal with 10"coil between 11 and 12 inches with quarters in wet sand so if the pi pro cant go deeper than that i dont see the point
Here is a test I did showing side by side comparisons ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3pNtGN6rWYk.html In terms of depth, where the Excal starts loosing the signal (11-12 inch quarter), the TDI Pro or ATX would be blasting loud.
It's not the depth so much as the increased sensitivity to small low conductors. So you may find more fine gold (necklaces and earrings) at 8-10inches where it is likely missed by other machines.
Terry Poole I use the Stealth scoop and also the T-Rex scoop. In this video, it is the Stealth. Never tried anything but the stock, I don't think I want to dig much deeper!! LOL
The duel tone is a great feature. Ground balance off TDI SL is deeper. TDI SL is killer on the beach but if your in a iron filled area get ready to work.
Unfortunately there is no ability to discriminate with PI machines. The ATX can identify shallow iron but once you're over 6", the iron ID does not work.
With the big 20 coil I the Garrett atx goes even deeper and still is stinky good on small targets . The only big prob is it s weight ,😣😣😥. The TDI Sl is my choice for daily hunting because of its light weight and stable threshold .
