SP12/12A
Manufactured: unknown - unknown
Designer: Erik Rorbaek Madsen
Colours: Silver
SP 12A Fitted to Beogram 3000, it had an elliptical naked diamond stylus with radii of 5x17u.
The highly polished stylus was designed to track the most difficult record grooves of stereo and SQ matrix records. Distortion in difficult treble passages was at an absolute minimum. Frequency range, stylus pressure and compliance, as the SP 10A. Replacement stylus: type 8905430
SP12/12A Product Specifications
SP 12A
Elliptical naked diamond
Radius of curvature 1,5 mm
Frequency range 20 - 25000 Hz+/- 3dB 50 - 16000 Hz +/- 2dB
Channel separation 1000Hz > 25dB
40 - 10000Hz > 20dB
Channel difference < 2db
Intermodulation < 1%
Recommended stylus pressure 1,2g
Compliance 25 x 10(-6) cm/dyne
Effective tip mass 0,8mg
Output mV/cm/sec. 1mV/47kOhms
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Created: 13th January 2007
Modified: 4th July 2008
Author Notes:
This was the upgrade cartridge. As the bodies were the same, only the outer casing with stylus had to be changed.
