GT was developed by Ortofon in close co-operation with SWS Audio GmbH. The cartridge was named "Great and Tough" and was based on the construction of the well-known Ortofon Series 500 design – mend for standard half inch mounting – in a black housing with white printing. The vital parts in the GT are based on a very robust and reliable parts used in Scratch. Further, during development of GT, efforts were also concentrated on supplying a very high output of 8 mV and improvement of frequency response to give higher resolution and sound image.

Technical Specifications

Output voltage at 1000Hz, 5cm/sec.
8 mV
Channel balance at 1kHz
1,5 dB
Channel separation at 1kHz
25 dB
Channel separation at 15 kHz
18 dB
Frequency range at -3dB
20-20.000 Hz
Frequency response
20-18.000 Hz +/- 2 dB
Tracking ability at 315 Hz at recommended tracking force
80 m
Compliance, dynamic lateral
6 m/m N
Stylus type
Spherical
Stylus tip radius
R 18 m
Tracking force range
3.0-5.0 g (30-50 mN)
Tracking force recommended
4.0 g (40 mN)
Tracking angle
20
Internal impedance, DC resistance
1000 Ohm
Internal inductance
580 mH
Recommended load resistance
47 kOhm
Recommended load capacitance
200-400 pF