Instruction Manual for LA4 with 1.0.X Firmware ā REV A Page 3
Contents
Safety Information 2
Fuses 2
AC Input Voltage Range 2
Power Cord 2
Modifications 2
Repairs 2
Front Panel 4
Rear Panel 4
Features 5
Quick Start Guide 6
Main Screen 6
Balance Controls 7
Screen Navigation 8
Display Settings 9
Remote Control 10
Front Panel Controls 11
Connecting Other Audio Components 12
Use Balanced Interfaces When Possible 12
Balanced XLR Signal Levels 12
Selecting Components for Your System 12
Use the 12V Trigger Connections 12
Connecting Benchmark Components 13
Benchmark AHB2 Power Amp 13
Benchmark DAC 13
Basic Features 14
Input Selection 14
Volume Control 14
Balance Adjust 14
MUTE Function 14
-20 dB Audio DIM Function 14
Advanced Features (Settings Screens) 15
Settings Menu Screens 15
DISPLAY Settings 16
INPUT SETUP 18
RENAME INPUT 18
VOLUME SETUP 18
SETTINGS LOCK 18
POWER Settings 19
REMOTE Settings 20
ABOUT Screens 21
SPLASH SCREEN 21
RESET Screens 22
LA4 System Overview 23
The Ultimate Line Amplifier 23
Relay-Controlled Gain Stage 23
Balance Controls 23
100% Analog Signal Path 23
Fully-Balanced Signal Paths 23
Differential Amplifiers 23
Ultra-Wide Bandwidth 23
Rotary Encoder 24
Convenience Features 24
12V Trigger 24
Auto-On Function 24
Casework 24
Equipment Placement 24
Auto-Ranging Power Supply 25
Audio Line Inputs 26
Balanced XLR Interfaces 26
Unbalanced RCA Interfaces 26
Input Level Matching 26
Audio Line Outputs 26
Unity Gain at 0 dB 26
15.8 dB Offset Balanced vs. Unbalanced 26
Advanced Feature Details 27
PRESET Mode 27
Auto-On Function 27
Bi-directional 12V Trigger 27
Software Version Identification 28
Performance Graphs 29
Specifications 38
Balanced Analog Outputs 38
Unbalanced Analog Outputs 38
Balanced Analog Inputs 39
Unbalanced Analog Inputs 39
Status Display 39
AC Power Requirements 39
Dimensions 40
Weight 40
Model Numbers 40
AC Power-Entry and Fuse Module 41
Regulatory Compliance 42
FCC Notice (U.S. Only) 42
RoHS 3 Compliance Information 43
California Proposition 65 Statement 44
California Proposition 65 Warnings 45
CE Certificate of Compliance 46
Warranty Information 47
Benchmark 1-Year Warranty 47
Benchmark Extended Warranty Options 48
Notes on Warranty Repairs 48
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