Studer A1 User Manual

A Series Active Monitor Speakers
Date printed: 29.02.00 Contents E0/1
CONTENTS
1 Welcome!...................................................................................................................................E1/1
1.1 Basics .............................................................................................................................................................E1/1
1.2 Safety and Connections..................................................................................................................................E1/3
1.2.1 Utilization for the Purpose Intended.........................................................................................................E1/3
1.2.2 Unpacking and Inspection........................................................................................................................E1/3
1.2.3 Installation...............................................................................................................................................E1/3
2 General......................................................................................................................................E2/1
2.1 Scope of Delivery ...........................................................................................................................................E2/1
2.2 Options...........................................................................................................................................................E2/1
2.3 Block Diagrams .............................................................................................................................................E2/2
2.4 Technical Specifications ................................................................................................................................E2/3
3 Operation ..................................................................................................................................E3/1
3.1 Connectors, Controls.....................................................................................................................................E3/1
4 Service Instructions...................................................................................................................E4/1
4.1 General ..........................................................................................................................................................E4/1
4.2 Spare Parts.....................................................................................................................................................E4/1
4.3 A1 Service......................................................................................................................................................E4/2
4.3.1 A1: Settings on the PCB ..........................................................................................................................E4/3
4.3.1.1 A1: Required Test Tools.....................................................................................................................E4/3
4.3.1.2 A1: Initial Settings..............................................................................................................................E4/3
4.3.1.3 A1: Powering Up ................................................................................................................................E4/3
4.3.1.4 A1: Supply Voltages...........................................................................................................................E4/3
4.3.1.5 A1: Input Gain Check and EQ Preadjustments....................................................................................E4/4
4.3.1.6 A1: Input Common Mode Rejection Ratio (CMMR) ...........................................................................E4/5
4.3.1.7 A1: Quiescent Current Setting............................................................................................................E4/5
4.3.1.8 A1: Woofer Amplifier Output.............................................................................................................E4/6
4.3.1.9 A1: Tweeter Amplifier Output............................................................................................................E4/7
4.3.1.10 A1: Limiter Threshold........................................................................................................................E4/8
4.3.2 A1: Checks on the assembled Unit...........................................................................................................E4/9
4.3.2.1 A1: Required Test Tools.....................................................................................................................E4/9
4.3.2.2 A1: Initial Settings..............................................................................................................................E4/9
4.3.2.3 A1: Insulation Check..........................................................................................................................E4/9
4.3.2.4 A1: Measurement Setup in the Anechoic Room ................................................................................E4/10
4.3.2.5 A1: SPL and EQ Fine-Adjustment....................................................................................................E4/11
4.3.2.6 A1: Distortion Check........................................................................................................................E4/11
4.3.2.7 A1: Polarity Check ...........................................................................................................................E4/12
4.3.2.8 A1: Overall Phase Check .................................................................................................................E4/12

Studer A1 Specifications

General

Brand	Studer
Model	A1
Category	Speakers
Language	English