Related Manuals for B&K series II
Summary of Contents for B&K series II
- Page 1 Reference 7270 series II Seven Channel Amplifier OWNER’S MANUAL B & K Components Ltd. P/N 13009 Rev.0102...
- Page 2 B&K Components, Ltd 2100 Old Union Road Buffalo, New York 14227 P/N 13009 Rev.0102...
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Page 3: Table Of Contents
Safety Precautions Purpose and function Design and construction Features Rear panel view Rear panel description Level controls Inputs Outputs System installation Making the connection Control Muting Troubleshooting Care and cleaning Specifications Warranty Accessories included: Manual and Power cord TABLE OF CONTENTS Page 1 page 2 page 3... -
Page 4: Safety Precautions
Turn the amplifier ‘off’ before plugging in or unplugging the input and speaker cables!!! The Reference 7270 series II is equipped with raised feet so that continuous ventilation can be maintained. They also help to keep acoustic feedback into the amplifier at a minimum. -
Page 5: Purpose And Function
THE REFERENCE 7270 SERIES II PURPOSE AND FUNCTION The Reference 7270 series II is a high current, seven channel power amplifier. It is designed to be used in all types of audio or audio/video systems. DESIGN AND CONSTRUCTION The Reference 7270 series II utilizes high quality electronic circuitry to achieve an environment wherein a detailed, transparent, and highly musical sound can be realized. -
Page 6: Rear Panel View
#,*" 5DB 4 >DC?DC ?;DB <8=DB ?;DB 1. AC fuse holder 2. AC Input receptacle 3. Speaker outputs REAR PANEL DESCRIPTION 1. AC fuse holder - Holds the AC Line fuse. This fuse is a 15 Amp / 250 Volt Slow Blow fuse. -
Page 7: Level Controls
In a system that uses the Reference 7270 series II for other applications, adjustment of level controls may be needed. Start with the level controls turned all the way up (fully clockwise), then adjust the level according to your system requirements to match each speaker as to produce the same sound pressure level with the same reference input. -
Page 8: Outputs
Here is a typical preamplifier to amplifier setup: ;4 E 4; ;4 E 4; ! ;> ;> 8= ?D C 8= ?D C ! Five way binding posts are provided. There is one pair provided for each channel. They are designed to accept a banana-type plug, spade-lug connector (shown below), terminal posts, and bare wire, and they are color coded for easy identification. -
Page 9: System Installation
There will most likely be a number of cables involved in the installation of your home entertainment system. Preplanning is essential in order to maximize system efficiency. We recommend the following as a means of helping you reach that goal: ƒ... -
Page 10: Making The Connection
MAKING THE CONNECTION ƒ Before doing anything, insure that the power switch on the amplifier’s front panel is in the ‘off’ position. ƒ Again, it is recommended that you locate a separate AC power outlet for the amplifier, one that is shared by any other audio component in the system or any other household component. -
Page 11: Control Muting
B&K series preamplifiers, can be utilized to provide a control signal to the Reference 7270 series II. If more than one amplifier is being controlled, the control signal can be extended to include each successive unit by simply running a 1/8"... -
Page 12: Troubleshooting
PROBLEM POSSIBLE CAUSE No sound Power cord not plugged in (‘on’ LED not illuminated) Power off at AC source AC power inlet fuse blown or faulty Control Input not activated. No sound on some or all Speaker leads loose or faulty. selected channels (‘on’... -
Page 13: Specifications
REFERENCE 7270 SERIES II SPECIFICATIONS Power rating: 8 ohms 4 ohms Frequency response Input sensitivity THD (S+N) Input impedance Damping factor Current (peak to peak) Slew rate Dynamic headroom S/N (A-weighted) Voltage gain Line voltage Dimensions (O.A.) Weight Power consumption... -
Page 14: Warranty
LIMITED WARRANTY B&K Components Ltd., referred to herein as B&K, warrants your B&K equipment against all defects in material and workmanship for a period of five years from the date of purchase. This warranty applies only to the original purchaser and only to equipment in normal residential use and service. Defective equipment must be returned to B&K, prepaid, accompanied by sufficient payment to cover the cost of return shipping and handling, and will be repaired or replaced at the discretion of B&K whose decision as to the method of reparation will be final. - Page 15 B&K Components, Ltd 2100 Old Union Road Buffalo, New York 14227 P/N 13009 Rev.0102...
- Page 16 B&K Components, Ltd. 2100 Old Union Road Buffalo, New York 14227 www.bkcomp.com P/N 13009 Rev.0102...