the Eckmiller filters are virtually impossible to modify. If someone told you so that you only have to switch the capacitor values, he never worked or looked inside one of these great mechanical examples of german craftsman ship.
Nearly all of those filters are mechanical driven/adjustable inductors and capacitors, some of them have stepped/tapped inductors but still the variable capacitors. So quite impossible to change/modify it.
The TS10 (Tiefen Sperre) is a switchable high pass filter, if you need the manual please contact me via firstname.lastname@example.org
The filter/low cut center frequencies is adjustable to 40/56/80/113/160/226/320/452 and 640 Hz with 24dB an octave.
Hope that helps,