B&K series II - Manuals - manualsarea.com

Page 2 - B&K Components, Ltd 2100 Old Union Road Buffalo, New York 14227

B&K Components, Ltd 2100 Old Union Road Buffalo, New York 14227 P/N 13009 Rev.0102

Page 3 - TABLE OF CONTENTS; Accessories included:

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 Level controls page 5 Inputs page 5 - 6 Outputs page 6 System installation page 7 Making the connection page 8 Control Muting pa...

Page 4 - SAFETY PRECAUTIONS; PLEASE READ BEFORE INSTALLING; “dangerous voltage”

SAFETY PRECAUTIONS PLEASE READ BEFORE INSTALLING WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNITTO RAIN OR MOISTURE. The lightning flash with an arrowhead, within an equilateral triangle, is intended toalert the user of the presence of uninsulated “dangerous voltage” within the pro...

Page 5 - - Improved current carrying capacity and sound quality

THE REFERENCE 7270 SERIES II PURPOSE AND FUNCTION The Reference 7270 series II is a high current, seven channel power amplifier. It isdesigned 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 a...

Page 6 - Rear Panel View; Amplifier control muting input/output; REAR PANEL DESCRIPTION; - Holds the AC Line fuse. This fuse is a 15 Amp / 250 Volt Slow Blow; AC Input receptacle

Rear Panel View 1. AC fuse holder 4. Amplifier control muting input/output 2. AC Input receptacle 5. Level controls 3. Speaker outputs 6. Inputs 7. Speaker fuses REAR PANEL DESCRIPTION 1. AC fuse holder - Holds the AC Line fuse. This fuse is a 15 Amp / 250 Volt Slow Blow fuse. Replace only with the ...

Page 7 - RCA cable connector

LEVEL CONTROLS THX certified units are denoted by the THX Ultra logo on the faceplate ofthe unit. For use in THX reference theater system, the level controls mustbe set to the full clockwise position (highest possible level). Generally in a home theater application, the level controls on the rear wi...

Page 8 - Here is a typical preamplifier to amplifier setup:; OUTPUTS; Spade connector Banana jack

Here is a typical preamplifier to amplifier setup: OUTPUTS Five way binding posts are provided. There is one pair provided for each channel. Theyare designed to accept a banana-type plug, spade-lug connector (shown below), terminalposts, and bare wire, and they are color coded for easy identificatio...

Page 9 - SYSTEM INSTALLATION

SYSTEM INSTALLATION There will most likely be a number of cables involved in the installation of your homeentertainment system. Preplanning 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 syst...

Page 10 - MAKING THE CONNECTION; not; shared by any other audio component in the system or any other; Do not connect it to the AC power source yet!; Double check all connections.; Before turning anything on, insure the preamplifier is at a

MAKING THE CONNECTION Before doing anything, insure that the power switch on the amplifier’s front panel is inthe ‘off’ position. Again, it is recommended that you locate a separate AC power outlet for the amplifier,one that is not shared by any other audio component in the system or any other h...

Page 11 - CONTROL MUTING; 270 series II. If more than one

CONTROL MUTING A control is used to “trigger” various outboard amplifiers, projectors, or other accessoriesby sending a specified voltage when a certain mode or source is selected from thesource of the control voltage “trigger”. A control system is provided on each Reference7270 series II amplifier ...

Page 12 - TROUBLESHOOTING; POSSIBLE SOLUTION; If the unit continues to blow power inlet fuses,; DO NOT USE A; have it serviced; CARE AND CLEANING; You may

TROUBLESHOOTING 1. Replace blown rail fuse inside amplifier 1. Blown rail fuse Channel sounds distortedand low in output 1. Check all connectors and repair as necessary. 1. Poor ground connection in inter- connect cables. Loud hum or buzz on oneor more channels 1. Check connections making sure that ...

Page 13 - REFERENCE 7270 SERIES II SPECIFICATIONS

REFERENCE 7270 SERIES II SPECIFICATIONS Power rating: 8 ohms 200 watts @ 1 kHz 4 ohms 375 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 450 Current (peak to peak) 75 Amps Slew rate 14 V / µ sec Dynamic h...