This is an old post from the European forums that has made the rounds here before. Some good info regarding depth:
"Today, we were at the "borehole" on our testsite with 2 Deus for another try-out according to the INGO standard, as a follow-up of the last test.
The objective was to record what effect setting the individual of parameters in the menu have on depthperformance.
Testpiece was (again) the 2 RM-piece (1939 Paul v. Hindenburg) and as my base setting I chose my personal program "FOREST" comprising of the following parameters:
- Disk 0
- 4 Tones, but effectively 3 Tones. T1&2 200Hz., T3 317Hz., T4 791Hz. Threshold T2/3 22, T3/4 80.
- Sens 95, Power 3
- 12 Khz.
- Reactivity 0
- Audio Response 2
- Silencer 1
- G.B Manual 80, following the measurement by the DEUS.
Test:
Using the above mentioned values, the 2RM piece was placed in the ground so that it could just be detected. This was at 23 cm ( the ground was bonedry and the coil not fully charged)
Now every individual parameter was changed and the resulting depthperformance recorded. You should read the results as follows: on the left the setting, on the right the performance in cm's
With depthperformance I mean: a usable signal you would dig.
We started of with the Sensivity.
Sensitivity:
80 / 18cm
85 / 20cm
90 / 21cm
95 / 23cm
98 / 23cm
Frequency:
4 Khz / 23cm
8 Khz / 22,5cm
12 Khz / 23cm
18 Khz / 22cm
Now instead of the big 2RM piece, we tried a silver Hohlpfennig weighing 0,12gr, because frequency should have a noticable effect on the small finds capability of a detector.
4 Khz / 7cm
12 Khz / 12cm
18 Khz / 12,5cm
After which we proceeded again with the 2RM piece and with Recoveryspeed.
Recovery:
0 / 23cm
1 / 23cm
2 / 23,5cm
3 / 22cm
4 / 20cm
5 / 19cm
Audio Response:
0 /23cm
1 / 23cm
2 / 23cm
3 / 23cm
4 / 23cm
5 / 24,5cm
Discrimination:
0 / 23cm
1 / 20cm
2 / 19,5cm
3 / 17,5cm
4 / 17,5cm
10 / 16,5cm
20 / 16,5cm
40 / 16,5cm
60 / 16,5cm
Ground (Deus itself measured a value of 7

:
77 / 25cm (but it was totally impossible to detect at 77, due to an incredible amount of false signals)
78 / 24cm
80 / 23cm
85 / 22,5cm
90 / 22cm
Unfortunately I totally forgot about the Silencer settings, but I will test this soon.
I couldn't change the Powersetting, despite the 12 kHz I couldn't change it in the Expertmode.
Obviously the Powersetting is coupled not only with the 4 kHz, but als with some other parameter.
I haven't found out which other setting is blocking the Power parameter in the Expertmode.
May be another Deus user can help me out.
Edited: 30.05.2011:
PS: - just tested the effects of Silencer- and Powersettings
With a freshly charged coil I can now detect the 2RM piece at 26 cm - so it pays off to have a fully charged coil - yesterday with Audioresponse at 5
in program FOREST I could only detect it at 24,5cm.
Power:
I tried all POWER settings more than once, but I can't, for the life of me, find any difference in depthperformance!
This surprises me greatly, I have taken my time with this test - the difference is truly insignificant.
I will use setting "1" in the future to save on batterylife and ask myself: why is it made adjustable at all?
Silencer:
The Silencer setting also doesn't have any noticeable effect on depthperformance - whether set in -1 or 4, performance is the same.
Setting 4 resulted in a less crisp signal and is therefore better not used.
Interesting would be to know if the Silencer has any effect on Recoveryspeed