Bel Canto Design PHONO 1 Low Noise Solid State Phono Preamplifier User's Guide and Operating Information Bel Canto Design • 212 Third Avenue North – Suite 345 • Minneapolis, MN 55401 Phone: (612) 317.4550 • Fax: (612) 359.9358 • Email: Info@BelCantoDesign.com Aug.
Low Noise Solid State Phono1 Preamplifier The Bel Canto Design’s PHONO1 components are selected for high sound quality, precision, technical virtue, and material quality. Bel Canto’s circuit designs and component quality will provide superb performance and years of listening satisfaction.
Bel Canto Design grew from the quest to achieve the ultimate musical satisfaction from an audio system. This quest began with the discovery of the inherent sonic qualities and musical performance potential of a nearly forgotten technology, the single-ended triode amplifier.
Design Features A classic architecture had been chosen to provide a firm foundation for the RIAA equalization and gain stages of the Phono1. The RIAA uses a robust series EQ architecture with high precision, low noise, high linearity resistors and high precision polypropylene film and foil construction capacitors for optimum signal transfer. The Moving Magnet gain is in the RIAA Equalization stage, using the latest ultra low distortion, low noise monolithic preamplifier device.
Unpacking Unpacking dealer or Bel Canto Design. The box containing your Phono1 contains the following parts: Save all packing materials as the packing is specially designed to protect the preamplifier for shipping or transporting it. If you lose or damage the packing materials or carton, please contact your dealer or distributor before attempting to transport the preamplifier. 1 - Phono1 User's Guide 1 - Power Cable for connection to utility power [1.
Gain Settings, Initial Setup, and Placement • Gain Settings Internal jumpers accommodate Moving Magnet, Moving Coil (Low Gain), and Moving Coil (High Gain) settings. The Phono1 is shipped from the factory set for Moving Magnet operation. Gain structure changes are easily made by first removing the two gold nuts from the RCA output jacks using a 5/8” socket. Take care not to scratch the chassis by avoiding contact between the socket and the end panel.
DIP switch setting BLANK = UP, X = DOWN Cartridge 50 100 500 1 k 10 k Load(ohms) 50000 x 8333 x 980 x x 893 x 495 x x 472 x x 331 x x x 321 x 100 x x 99 x x 91 x x x 90 x x 83 x x x 77 x x x x 76 50 x x 48 x x x 47 x x 45 x x x 43 x x 33 x x x 32 x x x 31 x x x x 30 x • RCA Main Output Jacks for Left and Right Channels These connectors are found on the opposite side as the RCA inputs, ground connector, and loading switches.
Specifications RIAA accuracy Into >20K Ohms • 20 Hz-20 kHz +/- 0.25 dB Signal to Noise Ratio • > 75 dB A weighted MM/MC Distortion at 3 Volts RMS out • <0.01% Input configuration and impedance • Adjustable /MC, 47 Kohms/MM Output Options • 1 Pair RCA Output Impedance • 50 ohms Maximum Output Level • 9Vrms 1 kHz Gain • 40, 54 or 60 dB Power Requirements • 115/230 VAC; 50-60 Hz 10 watts Size • 3.6 x3.6 x 9 inches Weight • 3.