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THE SENSOR 2
Thank you for purchasing the RCM Sensor 2 phono preamplifier. We are certain you will be delighted with the
performance when partnered with your favorite turntable and cartridge.
Please read this manual carefully before connecting the Sensor 2 to your system.
illustration 1
DESCRIPTION
Unlike the output from a CD player the raw signal from a phono cartridge suffers frequency distortion
because the output at 20 Hz is 1000 times lower than that at 20 kHz. This is deliberately implemented during
the recording process to enable the signal to be cut into the vinyl of the record. The phono preamplifier must
restore the frequencies to their correct balance using an RIAA equalization curve. The Sensor 2 uses passive
equalization in two stages to achieve this.
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Summary of Contents for RCM Audio Sensor 2
- Page 1 THE SENSOR 2 Thank you for purchasing the RCM Sensor 2 phono preamplifier. We are certain you will be delighted with the performance when partnered with your favorite turntable and cartridge. Please read this manual carefully before connecting the Sensor 2 to your system.
- Page 2 1 volt output. Our tests prove that 2 volts is optimum, the same as a CD player. Therefore, the Sensor 2 is capable of providing 76dB of gain and an output of 2 volts.
- Page 3 The GAIN (i.1 pos.3 and 10) switches enable the user to adjust the output of the preamplifier to match the other sources in the system. Start with all the switches in the OFF position and successively switch each one in and out until you reach the desired level to match other sources.
- Page 4 The LOAD (i.1 pos.5 and 12) switch allows you to adjust the input impedance that the cartridge sees. With all switches OFF the load impedance is 47k ohms. This is suitable for MM cartridges. MC cartridges generally like to see higher impedance and the manufacturer will usually state the optimum in the cartridge specifications.
- Page 5 Wiring diagram for balanced and unbalanced input using RCA connection Great care has been exercised in manufacturing this product for your enjoyment. If you have any questions please feel free to contact us for advice. We wish you many hours of happy listening. RCM Audio...
- Page 6 Technical data Input: RCA – Balanced and Unbalanced (selectable via switch) Output: 1 pair Balanced XLR, 1 pair Unbalanced RCA (single ended) Input sensitivity: 0.3 – 5 mV (selectable in 7 steps) Gain: 52 – 76 dB (2 V rms output at 1 kHz) Input impedance: 20 Ohm –...