B&K REFERENCE 3220 User Manual
Reference 3220
Three Channel Amplifier
OWNER’S MANUAL
B & K Components Ltd.
13006 rev 0005
B&K Components, Ltd., 2100 Old Union Road, Buffalo, New York 14227
13006 rev 0005
Table of contents
Safety Precautions Page 2
Purpose and function Page 3
Design and construction Page 3
Features Page 3
Rear panel view Page 4
Rear panel description Page 4 - 5
Control muting Page 5 - 6
Level controls Page 6
Outputs Page 7
Inputs Page 7 - 8
System installation Page 8
Making the connection Page 9
Troubleshooting Page 10
Care and cleaning Page 10
Specifications Page 11
Warranty page 12
Accessories included: Manual and Power cord
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13006 rev 0005
SAFETY PRECAUTIONS
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PLEASE READ BEFORE INSTALLING
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT
TO RAIN OR MOISTURE.
The lightning flash with arrowhead, within an equilateral triangle, is intended to alert the
user of the presence of uninsulated “dan
that may be sufficient ma
nitude to constitute a risk of electric shock to you.
erous voltage” within the product’s enclosure
The exclamation point within an equilateral trian
presence of important operatin
literature accompanyin
Observance of polarity is essential. Double-check connections before turning the
amplifier on. The amplifier can be damaged if polarities are incorrect.
Damage can occur to your speakers if the power rating* of each individual driver
is exceeded by the amplifier. Ensure that all the drivers in your speaker system
are capable of handling not only the power being delivered by the amplifier, but
the energy that is likely to be generated during strong passages.
Turn amplifier ‘off’ when plugging in or unplugging input and speaker cables!!!
The Reference 3220 is equipped with raised feet so that continuous ventilation
can be maintained. They help to maintain acoustic feedback into the amplifier 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 amplifier (preamplifier, processor,
source...etc.).
the unit.
and maintenance (servicing) instructions in the
le is intended to alert the user of the
Leave at least 2-3 inches clearance from the top of the amplifier to the next shelf,
component, etc., to ensure proper ventilation.
* If you are at all unsure of what the speaker ‘ratings’ are, contact your dealer.
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13006 rev 0005
The Reference 3220's purpose and function
The Reference 3220 is a compact, very efficient, three channel power amplifier. It is
designed to be used in all types of audio or audio/video systems.
Design and construction
The Reference 3220 utilizes high quality electronic circuitry to achieve an environment
wherein a detailed, transparent, and highly musical sound can be realized. The high
quality parts complement include state-of-the-art solid state devices, 1% metal film
resistors, computer grade electrolytic power supply capacitors, and a high capacity
toroidal transformer.
The Reference 3220 operates class A predriver and AB high current MOSFET power
output stages. It is capable of reproducing the most demanding audio signals at rated
power levels.
Features
Toroidal Transformers - Efficient high current transformer for improved dynamics.
Discrete Circuitry - More accurate and three dimensional reproduction of source
material.
Class A Predriver - Improves low level detail for smoother, more musical sound.
AB MOSFET Output Stage - For efficient and linear power delivery.
Limited Protection - Provides short term protection from accidental shorting of output
devices and protection from thermal overload.
Gold Plated Connectors - Improve connections for better sound and minimized signal
loss and degradation.
1% Metal Film Resistors - Low noise resistors for better sound and a greater degree of
repeatability.
High Current - Ability to reproduce demanding recordings.
Computer Grade Capacitors - Large capacity computer grade electrolytic capacitors
for extended low frequency control and improved dynamics.
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13006 rev 0005
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