REBIS AUDIO RA402
PARAMETRIC EQUALISER
OPERATORS MANUAL
CONTENTS
Page
Introduction
2
Installation
Earthing
3
Position
Operation
4
Feedback Prevention
5
Maintenance
6
Guarantee
7
Shipping
Specifications
8
Circuit Description
9
Page 1: ...2 PARAMETRIC EQUALISER OPERATORS MANUAL CONTENTS Page Introduction 2 Installation 2 Earthing 3 Position 3 Operation 4 Feedback Prevention 5 Maintenance 6 Guarantee 7 Shipping 7 Specifications 8 Circui...
Page 2: ...ake up gain and an overall in out switch The peak LED will light and stay on for 100mS if any of the sections should should detect an instantaneous overload INSTALLATION Immediately the RA402 is unpac...
Page 3: ...c trical contact with the rack and that the rack is correctly earthed WHATEVER EARTHING SYSTEM IS USED THE CHASSIS OF THE RA402 MUST CONNECT TO MAINS EARTH If there are still any problems try disconne...
Page 4: ...tre frequency the amount of boost or cut can be varied and the range of the equalisation can be altered with the bandwidth control Wide bandwidth settings give conventional sounding equ alisation Nar...
Page 5: ...ation stops Now reduce the amount of cut until the feedback starts again and then back off a little This procedure is then repeated at higher system gains the next three feedback frequencies being not...
Page 6: ...boards remove both lids These are held on by six self tapping screws two in each side and two in the back and one M3 countersunk socket screw in the centre of the front panel If it is necessary to re...
Page 7: ...purchase and serial number Any misuse of or modifications to the unit will render the guarantee void SHIPPING NEVER RETURN A UNIT WITHOUT FIRST PHONING OR WRITING Should it prove necessary to return a...
Page 8: ...Hz to 1 6kHz Section 3 250Hz to 5 6kHz Section 4 800Hz to 18kHz Section overlap 2 7 octaves Bypass Each section has an In Out switch Each channel has an In Out switch Frequency Response 1dB from 20Hz...
Page 9: ...its frequency range IC6a is an inverter which provides negative feedback through one half of the Q control around IC6b The input to the section feeds the boost side of the EQ control and the input of...
Page 10: ...the input of the balanced output driver IC3 The peak detector IC4 is a comparator which monitors the output volt ages of IC1 IC2 and IC5a in each parametric section It does this via pairs of diodes fr...
