B and K Phono 10 Owners manual
B&K
SB!IMPLY ETTER
B&K Components, Ltd.
Phono 10
P/N12839 0902
Owner’s Manual
B&K Components, Ltd., 2100 Old Union Road, Buffalo New York 14227-2725
Phone 1-800-543-5252 or (716) 656-0026, Fax (716) 656-1291
E-mail: info@bkcomp.com Web: www.bkcomp.com
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TABLE OF CONTENTS
Table of Contents...................................................................................................................................iii
Safety Precautions .................................................................................................................................1
Introduction.............................................................................................................................................2
Features...................................................................................................................................................2
Rear Panel View ......................................................................................................................................3
Design and Construction .......................................................................................................................4
Phono 10 Connections...........................................................................................................................4
Phono Stage............................................................................................................................................5
Selecting Moving Magnet / Moving Coil ............................................................................................................................... 5
Capacitive Loading .................................................................................................................................................................6
Resistive Loading....................................................................................................................................................................6
Control I/O Connections.........................................................................................................................8
Gain Switch .............................................................................................................................................9
Digital Output ..........................................................................................................................................9
Troubleshooting....................................................................................................................................10
Care and Cleaning ................................................................................................................................10
Specifications .......................................................................................................................................11
Limited Warranty..................................................................................................................................................................12
Returning Equipment............................................................................................................................................................12
WWW.BKCOMP.COM ...........................................................................................................................13
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SAFETY PRECAUTIONS
WARNING: to prevent fire or shock hazard, do not expose this unit to rain or moisture. Care should be
taken to prevent objects or liquid from entering the enclosure. Never handle the power cord with wet
hands.
• The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the user of the
presence of uninsulated “dangerous voltage” within the product’s enclosure that may constitute a risk of
electric shock to you.
• The exclamation point within an equilateral triangle is intended to alert the user of the presence of
important operating and maintenance (servicing) instructions in the literature accompanying the unit.
• Observance of polarity is essential. Double-check connections before turning the receiver or preamplifier
on. The Phono 10 can be damaged if polarities are incorrect.
• Turn your receiver or preamplifier and Phono 10 ‘off’ before plugging in or unplugging cables!!!
• The Phono 10 is equipped with raised feet. They help to keep acoustic feedback into the unit at a
minimum. They also provide a measure of protection against scratching any surface the unit might be
resting on. Do not alter or remove them.
• Do not stack anything on top of the Phono 10 (preamplifier, processor, source...etc.).
• Always unplug
changes to the Moving Coil (MC) or Moving Magnet (MM) stage inside the unit.
PLEASE READ BEFORE INSTALLING
the Phono 10 from the AC power source before removing the top cover and making any
Important!
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INTRODUCTION
Thank you for selecting B&K Components, Ltd.’s Phono 10 phono preamplifier. The Phono 10 is a discrete circuit
DC coupled topology RIAA phono preamplifier. It features a selectable head amp for use with both Moving Coil
(MC) and Moving Magnet (MM) players. In addition to a control I/O circuit is incorporated for standby / turn-on
from an external device there is also a S/PDIF coax digital output for use with CD quality recording. Gold plated
connectors have been utilized to minimize degradation in the signal path. In order to obtain maximum
performance from this unit, please read the following instructions very carefully. Again, we at B&K Components,
Ltd. would like to thank you for purchasing a Phono 10 preamplifier and wish you many years of listening
pleasure.
FEATURES
1% Metal Film Resistors - High quality resistors allow a lower noise floor and better sound.
Control I /O - Circuit allows for power ‘on’ and ‘off’ muting and external control for other components.
Direct coupled output - Provides a full and accurate, three dimensional reproduction of source material.
Discrete Circuitry – Allows minimum loading of the Phono cartridge and maximum amplification dynamic range.
FET loading – Allow maximum linearity with minimum noise.
Gold Plated Connectors – Provides for minimum signal loss and degradation.
Optional Digital output – Allows the Phono 10 to be used for transferring records to your Computer, CD or DAT
player. If not currently installed in the Phono 10, the S/PDIF *Digital output board is available for upgrade.
RIAA accuracy - +/- .2 dB through the use of polypropylene film capacitors. This produces a transparent sound
with highly accurate musical timbre.
Toroidal Transformer - Efficient, high current, shielded transformer that supplies the amplifier with a clean and
constant supply of power, even during highly demanding source material passages.
Wide bandwidth - Assures clear reproduction with all styles of music.
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