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B&K 125.7 S2 manual

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Table of contents for the manual

  • Page 1

    B & K Component s, Lt d. User Manual R EFERENCE 125.5 S2 R EFERENCE 125.7 S2 Five or Seven Channel Amplifier 13740 0604[...]

  • Page 2

    USER MANUAL - R EFERENCE 125.5 S2, R EFERENCE 125.7 S2 © 2004 B & K Components Lt d. 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, Lt d. B & K Component s Ltd. SHALL NOT BE LIABLE FOR OPERA T[...]

  • Page 3

    T ABLE OF CONTENTS ACCESSORIES AND LIMITED W ARRANTY ii T ABLE OF CONTENTS 1 SAFETY PRECAUTIONS 2 PURPOSE AND FUNCTION 3 BACK P ANEL 4 INPUTS 5 INPUT/OUTPUT CONNECTIONS 6 SYSTEM INST ALLA TION 7 CONTROL TRIGGERS 8 TROUBLESHOOTING 9 SPECIFICA TIONS Back Cover 1 Date of Purchase: Amp Model #: Amp Serial #: Purchased From: Address: Phone #: Product In[...]

  • Page 4

    W ARNING: to prevent fire or shock hazard, do not expose this unit to rain or moisture. Care should be t aken 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 alert the user of the presence of uninsulated &[...]

  • Page 5

    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 utilizes high quality electronic circuitry to achieve an[...]

  • Page 6

    BACK P ANEL F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E F U S E FUSE CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE AND RATING[...]

  • Page 7

    INPUTS INPUTS The Reference 125.5 S2 or Reference 125.7 S2 allows signal patch cables (interconnect s) to be sourced from either balanced or unbalanced preamplifier/processor outputs. A switch is used to configure a P AIR of AMPLIFIER CHANNELS for use with either balanced (XLR) or unbalanced (RCA) outputs. XLR BALANCED There are five balanced (XLR)[...]

  • Page 8

    INPUT/OUTPUT CONNECTIONS Use either RCA unbalanced or XLR balanced to connect the preamplifier to amplifier . INPUT 1 INPUT 2 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 XLR (BALANCED) RCA (UNBALANCED) XLR (BALANCED) RCA (UNBALANCED) XLR (BALANCED) RCA (UNBALANCED) XLR (BALANCED) RCA (UNBALANCED) INPUT 2 INPUT 1 INPUT 3 INPUT 4 INPUT 5 INPUT 6 INPUT 7 [...]

  • Page 9

    SYSTEM INST ALLA TION There will most likely be a number of cables involved in the installation of your home entert ainment 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 power line for the amplifier , one that [...]

  • Page 10

    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/of f feature. The control input is designed to operate with a source (trigger) of 5-24 volts DC. All B & K A/V processors and preamplifiers utilize control output trigger[...]

  • Page 11

    TROUBLESHOOTING ***Note: If unit continues to blow power fuses, DO NOT USE A HIGHER RA TED 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 special care. Over time you may wish to clean the exter[...]

  • Page 12

    R EFERENCE 125.5 S2 & R EFERENCE 125.7 S2 *A V - Amplified V oltage 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 T otal Harmonic Distortion (THD) 0.09 % Signal to Noise (S/N) 95 dB[...]