ASR Emitter I HD User Manual

Operating manual ASR Emitter I HD and II HD Page 1
ASR Audio Systems Friedrich Schäfer P.O. Box 1722, D- 35 727 Herborn  +49 27 72 / 4 29 05
We thank you for your confidence set into our firm and our product and request you a lot of joy while
listening music with your new ASR Emitter!
We as manufacturers, the firm ASR Audio Systems Friedrich Schäfer, produced for you the Emitter with
great care exclusively with highest quality and selected components.
If you have questions that your dealer can’t answer, please, call us during the normal business hours, Monday
till Friday from 7.30 to 15.00 o'clock middle European time.
The operating manual consists of two parts : The essential basics are discussed at first,
the details are explained more precisely in the following part.
Table of content
The operating concept of the Emitter, unpacking of the equipment, Scope of delivery Page 2
Set up and power connection of the Emitters Page 3
The grounding of your equipment, the ground lift switch, the accumulator power unit Page 4
The run in period, the connection of devices at the input Page 5
Direct input, connection of a tape deck or of an auxiliary equipment Page 6
The connection of loudspeakers, second output, headphones, direct output Page 7
Operating elements of the Emitter Page 8
Controls and remote control of the Emitter Page 9
Table of the remote control keys and its meaning Page 10
Tuning of the balance and the level adjust Page 11
Tuning of the display and of the energy saving circuit Page 12
Set up of the configuration, function control LED’s Page 13
Protection circuits : Short circuit, distortion switch off, offset, too high temperature Page 14
What to do in the case of malfunction Page 15
General drawing of the Control- LED’s on the main PCB board, function overview Page 16
Cleaning Page 17
Technical data Page 18
Set up and installation of the optional phono board Page 19
!!! Please, read carefully this operating manual before you set up your Emitter and

ASR Emitter I HD Specifications

General

Power Output (8 Ohms)	140 W per channel
Total Harmonic Distortion (THD)	< 0.01%
Signal-to-Noise Ratio	> 100 dB
Weight	15 kg
Inputs	6 x RCA, 2 x XLR

Summary

Emitter Operating Concept

Emitter Unpacking Procedure

Emitter Installation Location

Acoustic Isolation for Emitter

Emitter Power Connection Guide

Ground Connection and Phase

Ground Lift Switch Usage

Accumulator Power Unit Option

Emitter Warm-up Time

Connecting Devices to Emitter

Direct Input Option

Connecting Tape Deck to Emitter

Auxiliary Equipment Connection

Connecting Loudspeakers to Emitter

Headphones Option Guide

Emitter Operation Controls

ON-OFF Switch Functions

Controls the power state of the amplifier, with Off, Standby, and operational positions.

ON-OFF Switch with Optional Equipment

Details the function of the ON-OFF switch with additional outputs like headphones or second output.

Input Selector Switch Operation

Allows selection of one of six available input sources for audio signals.

Volume Control Knob Usage

Adjusts the audio output level with a sensitive rotary impulse generator.

Monitor Switch Function

Activates monitor relays for tape monitoring or other adjustment modes.

Remote Control Operation

Remote Controller Programming

Emitter Balance Adjustment

Emitter Input Level Adjustment

Emitter Display Settings

Emitter Energy Saving Circuit

Setting Display Mode and Brightness

Setting Energy Saving Circuit Point

Emitter Configuration Settings

DIP Switch Left Side Configuration

Configuration settings for the left bank of 8-pole DIP switches.

DIP Switch Right Side Configuration

Configuration settings for the right bank of 8-pole DIP switches.

Emitter Functional Control LEDs

Emitter Protection Circuits

Impedance Control Before Switch-On

Checks loudspeaker impedance before amplifier switch-on to prevent short circuits.

Distortion, Overload, and Offset Control

Monitors for distortion and overload, disconnecting channels to protect speakers.

Emitter Troubleshooting Guide

Program Run Malfunctions Reset

Guidance on resetting the amplifier by cycling the power switch.

No LED After Switch-On Fuse Check

Instructions for checking and replacing fuses if no LEDs illuminate upon startup.

Remote Control Signal Issues

Troubleshooting steps for when the remote control does not affect the Emitter.

Case Cracks During Warm-up

Explanation of potential case noises due to thermal expansion.

Emitter Cleaning Instructions

Scratch Elimination on Emitter

Emitter Repair Process

Emitter Technical Specifications

Phono Board Mounting and Settings

Phono Input Impedance Settings

Sets input impedance for different phono cartridges (MM/MC).

Phono Amplification Adjustment

Adjusts the amplification level for various phono pickup types.