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B&K 220M - page 1
Reference 220M Sin g le Channel Amplifier OWNER’S MANUAL B & K Components Ltd. 13005 rev 0004 ...
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B&K 220M - page 2
13005 rev 0004 B&K Components, Ltd., 2100 Old Union Road, Buffalo, New York 14227 ...
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B&K 220M - page 3
Page 1 13005 rev 0004 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 8 System installation Page 9 Making the connection Page 9 - 10 Troubleshootin ...
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B&K 220M - page 4
Page 2 13005 rev 0004 SAFETY PRECAUTIONS PLEASE READ BEFORE INSTALLING WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. The li g htnin g flash with arrowhead, within an equilateral trian g le, is intended to alert the user of the presence of uninsulated “dan g erous volta g e” within the product’s enclosu ...
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B&K 220M - page 5
Page 3 13005 rev 0004 The Reference 220M's purpose and function The Reference 220M is a compact, very efficient, single channel power amplifier. It is designed to be used in all types of audio or audio/video systems. Design and construction The Reference 220M utilizes high quality electronic circuitry to achieve an environment wherein a detail ...
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B&K 220M - page 6
Page 4 13005 rev 0004 Rear Panel View 1. AC fuse holder 5. RCA input (unbalanced) 2. AC Input receptacle 6. Level controls** 3. Speaker outputs 7. Amplifier control muting input/output 4. Balanced Inputs ** OPTIONS AVAILABLE FOR THE Reference 220M AMPLIFIER Rear panel description 1. AC fuse holder - Holds the AC Line fuse. This fuse is an 12 Amp / ...
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B&K 220M - page 7
Page 5 13005 rev 0004 5. RCA inputs- For connecting signal patch cables (interconnects) from the preamplifier to the amplifier to pass signal. 6. Level controls - Option available for the Reference 220M amplifier. For adjusting the input level to the amplifier. Explained further on page 6. 7. Amplifier control muting input/output - To provide remot ...
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B&K 220M - page 8
Page 6 13005 rev 0004 )LJXUH& If the control function is desired, each unit in the system must remain connected at all times and the control must be enabled. To enable the control function, the CTRL ENABLE button must be out for each controllable amplifier in the system. For more information on the amplifiers output status under various cont ...
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B&K 220M - page 9
Page 7 13005 rev 0004 )LJXUH' Outputs Five wa y bindin g posts are provided. One pair for each channel. The y are desi g ned to accept a banana-t y pe plu g or spade lu g connector (shown below) and are color coded for eas y identification. The red (+) post should alwa y s be connected to the speakers (+) jack. The black (-) post should alw ...
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B&K 220M - page 10
Page 8 13005 rev 0004 Inputs Unbalanced - RCA type connectors accept line input from the preamplifier’s unbalanced output connectors. There are two input connectors, that may be used to connect the amplifier to the preamplifier. The Channel 3 input is used for normal operation. RCA cable connector - Operation - For unbalanced operation, ensure th ...
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B&K 220M - page 11
Page 9 13005 rev 0004 System installation There will most likely be a number of cables involved in the installation of your home entertainment system. Pre-planning is essential in order to maximize system efficiency. We recommend the following as a means of helping you reach that goal: Make a diagram of your proposed system by laying out the re ...
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B&K 220M - page 12
Page 10 13005 rev 0004 Connect the wires from your speakers to the appropriate output on the amplifier. It is absolutely essential that you observe correct polarity in these connections. Example: If you connect your ri g ht front output of your preamplifier to channel 1 input on the amplifier, remember to connect your ri g ht front speaker wire ...
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B&K 220M - page 13
Page 11 13005 rev 0004 Troubleshooting PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION No sound (‘on’ LED not illuminated) 1. Power cord not plu gg ed in. 2. Power off at AC source. 3. AC power inlet fuse blown or faulty. 4. Control switch in the wron g position. 1. Reconnect power cord. 2. Check AC switch or fuse. 3. Check for shorts or overloadin g ...
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B&K 220M - page 14
Page 12 13005 rev 0004 Reference 220M SPECIFICATIONS Power rating: 8 ohms 250 watts @ 1 kHz 4 ohms 400 watts @ 1 kHz Frequency response 5 Hz - 45 kHz Input sensitivity 1.4 Volts THD (S+N) 0.09 % @ 1 kHz Input impedance 33.2 k ohms Damping factor 750 Current (peak to peak) 150 Amps Slew rate 14 V / ) sec Dynamic headroom 1.4 dB S/N (A-weighted) 95 d ...
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B&K 220M - page 15
Page 13 13005 rev 0004 Limited Warrant y B&K Components Ltd., referred to herein as B&K, warrants your B&K equipment a g ainst all defects in material and workmanship for a period of five years from the date of purchase. This warranty applies only to the ori g inal purchaser and only to equipment in normal residential use and service. D ...
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B&K 220M - page 16
13005 rev 0004 B&K Components, Ltd. 2100 Old Union Road Buffalo, New York 14227 716-656-0023 www.bkcomp.com ...
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