Description
Moving Coil Step-Up Transformer MC3
1+1 : 10+10 (Z: 1 – 15Ω) chassis mounting
High Performance Step-Up Transformer MC3 – for low to medium impedance cartridges. Amplifies the low-level signal from a moving coil (MC) phono cartridge used in turntables. MC cartridges are prized for their superior sound quality but produce very low output voltages, typically in the range of 0.2 mV to 0.5 mV, which is much lower than the output of a moving magnet (MM) cartridge. The transformer boosts this signal to a level suitable for standard phono pre-amplifiers.
- Input -2dBu max (20Hz) <1%THD
- Fitted with multiple electrostatic screens
- Low distortion Mu-metal core
- Mu-metal screening can reduces electrical noise by up to 30dB
- For ratio 1:20
- Primaries: link 4+5 and link 1+2
- Secondaries: link 7+8
- For ratio 1:10
- Primaries: link 2+4
- Secondaries: link 7+8
- Hi-pot, primaries to secondaries: 500VDC
- Windings to screens+can: 500VDC
- 2 x Transformers are required for a STEREO set-up
- Chassis Mounting
Transformer Data Sheet – Click to open and DOWNLOAD
Electrical specification MC3
Specification (test circuit 1)
- Turns ratio: 1+1 to 10+10
- Cartridge impedance: 1 – 40Ω
- DC resistance (Ω+/-15%)
- Primary: 0.36+0.36
- Secondary : 43+43
- Input impedance (Ω): 101 (typ.) @ 1kHz
- Output impedance (Ω): 400 (2R source)
- 700 (5R source)
- Frequency response: 16Hz – 55kHz (+/-0.25dB)
- Voltage gain @ 1kHz, -20dBu: (1 to 10) 19.5dBu (typ.)
- (1 to 20): 24.4dBu (typ.)
- Maximum input @ 20Hz, <1% THD: -2dBu
- Insertion loss: 0.1dB (typ.)
- Leakage inductance (10 – 6) @ 1kHz: 2mH (max.)
- Capacitances @ 10kHz, 0.1V:
- Cp-s: 365pF (typ)
- Cp-s: 5pF (typ.) screens and can earthed
- Cp-scr: 710pF (typ.)
- Cs-scr: 770pF (typ.)
