In case you wanted to discuss the circuit further, here is the whole of the circuit and a description taken from the manufacturers service sheets.
The record deck was a BSR MA65 and the cartridge is described as a stereo C1 with diamond stylus.
I also found this information
C-1
C1 C 1 c1 c-1 c 1
Stereo Ceramic Piezo
Mike
The record deck was a BSR MA65 and the cartridge is described as a stereo C1 with diamond stylus.
I also found this information
C-1
C1 C 1 c1 c-1 c 1
Stereo Ceramic Piezo
- Cartridge Type: Ceramic Piezo.
- Stylus Shape: Conical.
- Stylus Type: Conical 0.7 mil. Diamond for LP & 3.0 mil. Sapphire for 78 RPM. (Flip-Over)
- Frequency Response: 20 Hz. - 20 kHz.
- Output Voltage: 0.43 V at 1 kHz, 5 cm/sec.
- Dynamic Compliance: 8 x 10-6 cm/dyne.
- Vertical Tracking Force Range (Grams): 1.5 grams - 6.0 grams.
- Recommended Load Impedance: 47,000 Ohms.
- Number of Terminals: 4.
- Net Mass: 4.5 grams.
- Replacement Stylus: ST-8, ST-9, ST-10, ST-11, ST-12 & ST-23.
- OEM Part Numbers: BSR C-1, C1-ST3.
Mike
