B & k components, ltd. User manual r eference 125.5 s2 r eference 125.7 s2 five or seven channel amplifier 13740 0604.
User manual - r eference 125.5 s2, r eference 125.7 s2 © 2004 b&k components ltd. All rights reserved. The information in this manual is copyright protected. No part of this manual may be copied or reproduced in any form without prior written consent from b&k components, ltd. B&k components ltd. Sha...
Table of contents accessories and limited warranty ii table of contents 1 safety precautions 2 purpose and function 3 back panel 4 inputs 5 input/output connections 6 system installation 7 control triggers 8 troubleshooting 9 specifications back cover 1 date of purchase: amp model #: amp serial #: p...
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 aler...
Purpose and function purpose and function the reference 125.5 s2 (five channel) or reference 125.7 s2 (seven channel) is a high power amplifier that is designed for use in all types of audio or audio/video systems. Design and construction the reference 125.5 s2 or reference 125.7 s2 amplifier utiliz...
Back panel fuse fusefu se fu sef us e fus e fuse fusefu se fu sef us e fus e fuse fusefu se fu sef us e fus e fuse fusefu se fu sef us e fus e fuse fusefu se fu sef us e fus e f u s e c au t i o n : f o r c o n t i n u e d p r o t e c t i o n a g a i n s t r i s k o f f i r e r e p l a c e o n ly w ...
Inputs inputs the reference 125.5 s2 or reference 125.7 s2 allows signal patch cables (interconnects) to be sourced from either balanced or unbalanced preamplifier/processor outputs. A switch is used to configure a pair of amplifier channels for use with either balanced (xlr) or unbalanced (rca) out...
Input/output connections use either rca unbalanced or xlr balanced to connect the preamplifier to amplifier. I n p u t 1 i n p u t 2 i n p u t 3 i n p u t 4 i n p u t 5 i n p u t 6 i n p u t 7 x l r ( b a l a n c e d ) r c a ( u n b a l a n c e d ) x l r ( b a l a n c e d ) r c a ( u n b a l a n c e...
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. •• when possible, use a dedicated ac...
Control triggers a control (trigger) system is provided on the reference 125.5 s2 or reference 125.7 s2 amplifiers to allow remote switching of the amplifier's standby on/off feature. The control input is designed to operate with a source (trigger) of 5-24 volts dc. All b&k a/v processors and preamp...
Troubleshooting ***note: if unit continues to blow power fuses, do not use a higher rated fuse, please con- tact customer service to have the unit serviced. When servicing fuses always disconnect ac power before replacing. Care and cleaning under normal use, the amplifier will not require any specia...
R eference 125.5 s2 & r eference 125.7 s2 *av - amplified voltage power rating: 8 Ω 125.5 / 125.7 power rating: 4 Ω 125.5 / 125.7 125 watts / 125 watts 185 watts / 185 watts number of channels 5 / 7 current (peak to peak) 30 amps / 30 amps dynamic headroom 1.2 db / 1.2 db total harmonic distortion (...
