GT Replacement stylus for tough handling – extremely sturdy for scratching DJs
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.
Tracking avility is decisive for the DJs especially when scratching and back-cuing. In this situation raise of tracking force could be an immediate, but in many cases not very effective solution. The reason is that the antiskating adjustment, if not at a very moderate level, will double the skating effect when back-cuing.
As a rule, never use more than half of normal antiskating related to the tracking force! To make GT even more resistant against violent handling, such as drop or touch of fingers, we have made a rubber suspension of the cantilever even more rigid against axial pull.
GT Stylus Technical data
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 μm
Compliance, dynamic lateral – 6 μm/m N
Stylus type – Spherical
Stylus tip radius – R 18 μm
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