Kramer Electronics, Ltd.
Preliminary
USER MANUAL
Model:
906
6.6W Per Channel Stereo Audio Amplifier
Contents
i
Contents
1 Introduction 1
2 Getting Started 1
2.1 Quick Start 2
3 Overview 3
4 Your 906 Amplifier 4
5 Connecting the 906 Amplifier 5
5.1 Connect the 10V CONTROL Port to an External Controller 6
5.2 Connecting a PC 7
5.3 Connecting the 906 via the Ethernet Port 7
6 Operating the 906 9
6.1 Using the Front Panel Buttons 9
6.2 Using Serial Commands 9
6.3 Using the Embedded Web Server 9
6.4 Using the RC-IR3 Infrared Remote Controller 14
6.5 Updating the 906 Firmware 14
7 Default Communication Parameters 14
8 Technical Specifications 15
9 906 Commands in Protocol 3000 16
9.1 Operating Commands 16
9.2 Help Commands 16
9.3 Device Initiated Messages 16
9.4 Result and Error Codes 16
9.5 Basic Routing Commands 17
9.6 Audio Parameter Commands 17
9.7 Identification Commands 18
9.8 Network Setting Commands 19
9.9 Machine Information Commands 19
9.10 Protocol 3000 Syntax 20
9.10.1 Host Message Format 20
9.10.1.1 Simple Command 20
9.10.1.2 Command String 20
9.10.1.3 Device Message Format 20
9.10.1.4 Device Long Response 20
9.10.2 Command Terms 21
9.10.3 Entering Commands 21
9.10.4 Command Forms 22
9.10.5 Command Chaining 22
9.10.6 Maximum String Length 22
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Contents
ii
Figures
Figure 1: 906 Amplifier 4
Figure 2: Connecting the 906 Audio Amplifier 6
Figure 3: Connecting the 10V CONTROL Terminal Block Connector 6
Figure 4: Connecting to a PC 7
Figure 5: Local Area Properties Window 8
Figure 6: Internet Protocol (TCP/IP) Properties Window 8
Figure 7: Java Test Page Success Message 10
Figure 8: Entering the IP Number in the Address Bar 10
Figure 9: Loading the Embedded Web Server 11
Figure 10: First Time Security Warning 11
Figure 11: The 906 Control Window 12
Figure 12: Control Settings 13
Figure 13: Ethernet Settings 13
Tables
Table 1: 906 Amplifier Functions 4
Table 2: Default Communication Parameters 14
Table 3: 906 Technical Specifications 15
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 the video, audio, presentation, and
broadcasting professional 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
1
Thank you for purchasing the Kramer MegaTOOLS® 906 6.6W Per
Channel Stereo Audio Amplifier, which is ideal for:
that are clearly
defined by function.
• Presentation rooms and multimedia applications for quick, local
audio amplification
• Personal audio listening (for example, a PC and portable CD
player)
The package includes the following items:
• 906 6.6W Per Channel Stereo Audio Amplifier
• Kramer RC-IR3 Infrared Remote Control Transmitter (including
the required battery and a separate user manual)
• Power supply (12V DC)
• This user manual
2
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
• Use Kramer high performance high resolution cables
3
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; 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; GROUP 11: Sierra Products
2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Getting Started
2
2.1 Quick Start
This quick start chart summarizes the basic setup and operation steps.
Overview
3
3 Overview
The Kramer 906 is a high-performance audio amplifier for line-level 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
6.6W RMS per channel into 8Ω loads on a 4-pin terminal block
connector. The 906 features:
• Two input selector buttons and a mute button
• One gain knob for adjusting the audio output levels for loudness, bass,
middle, treble, balance and the volume
• A USB connector for firmware upgrade
• RS-232 and Ethernet ports
• A 10V control port for adjusting the audio gain via an external connector
1
The 906 can be controlled:
• Directly, via the front panel push buttons and adjustment knob
• Via an external 10V controller (for volume)
• By RS-232 serial commands transmitted by a touch screen system, PC, or
other serial controller
• Via the Ethernet using the embedded Web server
• Remotely, from the infrared remote control transmitter
The 906 is housed in a Kramer MegaTOOLS™ enclosure and is fed by a 12V
DC power supply.
To achieve the best performance:
• Use only good quality connection cables
2
• Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your Kramer 906 away
from moisture, excessive sunlight and dust
to avoid interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables).
1 For example, the Kramer RC-63A
2 Available from Kramer Electronics on our Web site at
http://www.kramerelectronics.com
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your 906 Amplifier
4
4 Your 906 Amplifier
Figure 1 and Table 1 define the 906.
Figure 1: 906 Amplifier
Table 1: 906 Amplifier Functions
#
Feature
Function
1 INPUT 1 L RCA Connector Connect to the left unbalanced stereo analog audio source 1
2 INPUT 1 R RCA Connector Connect to the right unbalanced stereo analog audio source 1
3 INPUT 2 Terminal Block Connector Connect to the balanced stereo audio source 2
4 OUT Terminal Block Connector Connect to a balanced stereo acceptor (speakers)
5 10V VOL Terminal Block Connector Connect to a controller
1
6
to adjust the volume via the controller
RS-232 Tx Rx G Terminal Block
Connector
Control connector for RS-232
7 ETHERNET Port Connects to your LAN
2
8 FACTORY RESET Button Press to reset to the factory default state
9 PROGRAM Switch For factory use only
10 12V DC Connector +12V DC for powering the unit
11 IR IN Receiver Accepts IR remote commands
12 ON LED Illuminates green when receiving power, flashes when
receiving IR commands
13 MUTE Button Press to disable/enable the audio output. The button
illuminates when the audio output is disabled
14 INPUT SELECTOR Buttons 1 Press to select the input 1 audio source
15 2 Press to select the input 2 audio source
16 LOUDNESS Adjustment Button Press to select the loudness adjustment, adjust with the Level
Knob
17 BASS Adjustment Button Press to select the bass adjustment, adjust with the Level Knob
1 For example, the Kramer RC-63A
2 Local Area Network (that is, computers sharing a common communications line or wireless link, which often share a server
within a defined geographic area)
Connecting the 906 Amplifier
5
#
Feature
Function
18 MID Adjustment Button Press to select the mid range adjustment, adjust with the Level
Knob
19 TREBLE Adjustment Button Press to select the treble adjustment, adjust with the Level Knob
20 BALANCE Adjustment Button Press to
select the balance between right and left speakers, adjust
with the Level Knob
21 VOLUME Adjustment Button Press to select the volume adjustment, adjust with the Level Knob.
Press and hold to disable local volume control and enable remote
volume control. Press and hold again to activate local volume
control (see section
6.1)
22 Adjustment Potentiometer Knob Turn to raise or lower the selected audio feature
23 PROGRAM USB Connector For factory use only
5 Connecting the 906 Amplifier
To connect the 906, as illustrated in the example in Figure 2, do the
following:
1. Connect an unbalanced stereo audio source (for example, the unbalanced
stereo audio output of a DVD player) to the L and R INPUT 1 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.
3. Connect the OUTPUT terminal block to a pair of loudspeakers:
Connect the “L+” and the “L-” terminal block connectors to the left
loudspeaker, and the “R+” and the “R-” terminal block connectors to the
right loudspeaker. Do not ground the loudspeakers.
4. Connect the 12V DC power adapter to the power socket and connect the
adapter to the mains electricity (not shown in
Figure 2).
5. If required connect:
The 10V CONTROL terminal block connector to an external
controller
1
5.1
(see section )
The RS-232 port to a PC and/or serial controller (see section
5.2)
The Ethernet port to a PC or a network hub or router (see section
5.3)
1 For example, the Kramer RC-63A
KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the 906 Amplifier
6
Figure 2: Connecting the 906 Audio Amplifier
5.1 Connect the 10V CONTROL Port to an External Controller
You can connect the 906 10V CONTROL terminal block connector to a
controller (for example, the Kramer RC-63A) as illustrated in
Figure 3:
Figure 3: Connecting the 10V CONTROL Terminal Block Connector
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