Kramer 905xl User manual

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

905xl

Power Amplifier

P/N: 2900-300196 Rev 3

905xl - Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

2.2 Safety Instructions 2

2.3 Recycling Kramer Products 3

3Overview 4

4Defining the 905xl Power Amplifier 5

5Installing in a Rack 6

6Connecting the 905xl Power Amplifier 7

6.1 Connecting to the 905xl via RS-232 8

7Operating the 905xl Power Amplifier 9

7.1 Using the Front Panel Buttons 9

7.2 Using the Audio Control Program 9

7.3 Upgrading the Firmware 11

8Technical Specifications 12

9Default Communication Parameters 13

10 Protocol 3000 14

10.1 Kramer Protocol 3000 Syntax 14

10.2 Kramer Protocol 3000 Commands 16

Figures

Figure 1: 905xl Power Amplifier Front and Rear Panels 5

Figure 2: Connecting the 905xl Power Amplifier 7

Figure 3: Audio Control Window 10

905xl - Introduction 1

1 Introduction

Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been

providing a world of unique, creative, and affordable solutions to the vast range of

problems that confront video, audio, presentation, and broadcasting professionals

on a daily basis. In recent years, we have redesigned and upgraded most of our

line, making the best even better!

Our 1,000-plus different models now appear in 11 groups that are clearly defined

by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;

GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5:

Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:

Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9:

Room Connectivity; GROUP 10: Accessories and Rack Adapters and GROUP 11:

Sierra Video Products.

Congratulations on purchasing your Kramer 905xl Power Amplifier, which is ideal

for the following typical applications:

•Presentation rooms and multimedia applications for quick, local audio

amplification

•Personal audio listening (for example, a PC and portable CD player)

2 905xl - Getting Started

2 Getting Started

We recommend that you:

•Unpack the equipment carefully and save the original box and packaging

materials for possible future shipment

•Review the contents of this user manual

Go to http://www.kramerelectronics.com to check for up-to-date

user manuals, application programs, and to check if firmware

upgrades are available (where appropriate).

2.1 Achieving the Best Performance

To achieve the best performance:

•Use only good quality connection cables (we recommend Kramer high-

performance, high-resolution cables) to avoid interference, deterioration in

signal quality due to poor matching, and elevated noise levels (often

associated with low quality cables)

•Do not secure the cables in tight bundles or roll the slack into tight coils

•Avoid interference from neighboring electrical appliances that may adversely

influence signal quality

•Position your 905xl away from moisture, excessive sunlight and dust

This equipment is to be used only inside a building. It may only be

connected to other equipment that is installed inside a building

2.2 Safety Instructions

Caution: There are no operator serviceable parts inside the unit

Warning: Use only the power cord that is supplied with the unit

Warning: Do not open the unit. High voltages can cause

electrical shock! Servicing by qualified personnel only

Warning: Disconnect the power and unplug the unit from the wall

before installing

905xl - Getting Started 3

2.3 Recycling Kramer Products

The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC

aims to reduce the amount of WEEE sent for disposal to landfill or incineration by

requiring it to be collected and recycled. To comply with the WEEE Directive,

Kramer Electronics has made arrangements with the European Advanced

Recycling Network (EARN) and will cover any costs of treatment, recycling and

recovery of waste Kramer Electronics branded equipment on arrival at the EARN

facility. For details of Kramer’s recycling arrangements in your particular country

go to our recycling pages at http://www.kramerelectronics.com/support/recycling/.

4 905xl - Overview

3 Overview

The 905xl is a high quality power amplifier for stereo audio signals. It accepts

either a stereo audio signal on RCA connectors or a balanced stereo audio signal

on a terminal block connector. It delivers a speaker output of 110 watts RMS per

channel into a 4Ω load on a 10A 4 pin terminal block connector.

In particular, the 905xl features:

•An unbalanced, stereo input on RCA connectors

•A balanced, stereo input on a terminal block connector

•Two input selector buttons

•Volume control buttons

•A mute button

•Bass, treble, midrange, volume, balance and loudness controls (via

software)

•An RS-232 serial control port

You can control the 905xl using the front panel buttons, or remotely via RS-232

serial commands transmitted by a PC, touch screen system or other serial

controller.

4 Defining the 905xl Power Amplifier

Figure 1defines the front and rear panels of the 905xl.

Figure 1: 905xl Power Amplifier Front and Rear Panels

# Feature Function

1 INPUTS 1 and 2Buttons Press to select input audio source 1 (unbalanced) or 2 (balanced)

2 VOLUME ↑and ↓Buttons Press to increase or decrease the output volume

3 MUTE Button Press to mute the audio output (the button lights). Press again to unmute the audio output (see

Section 7.1.2

)

INPUT 1 LEFT RCA Connector Connect to the left channel of the unbalanced, stereo audio source (see Section 6

RIGHT RCA Connector

)

Connect to the right channel of the unbalanced, stereo audio source (see Section 6

)

INPUT 2 5-pin Terminal Block Audio Input Connect to the left and right channels of the balanced, stereo audio source

6 SPKR OUT 4-pin Terminal Block Speaker Output

Connect to the left and right channels of a balanced, stereo acceptor (speakers)

7 RS-232 9-pin D-sub Serial Port Connector Connect to a PC/serial controller (see Section 6.1

)

PROGRAM Switch Switch up to perform firmware upgrades. Leave down for normal operation

9 Mains Power Connector, Fuse and Power Switch

Plug in the power cord and switch the device on and off

5905xl – Defining the 905xl Power Amplifier

6 905xl - Installing in a Rack

5 Installing in a Rack

This section provides instructions for rack mounting the unit.

905xl - Connecting the 905xl Power Amplifier 7

6 Connecting the 905xl Power Amplifier

Always switch off the power to all devices before connecting them to

your 905xl. After connecting your 905xl, connect its power and then

switch on the power to each device.

Figure 2: Connecting the 905xl Power Amplifier

To connect the 905xl Power Amplifier as illustrated in the example in

Figure 2:

1. Connect an unbalanced stereo audio source (for example, the unbalanced

output of a DVD player) to the Input 1 L and R RCA connectors.

2. Connect a balanced stereo audio source (for example, the balanced stereo

audio output of a DVD player) to the Input 2 terminal block connector.

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