Kramer 905xl Stereo Audio Power Amplifier User Guide

Kramer 905XL Stereo Audio Power Amplifier 

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)

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).

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

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 it.

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/.

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 another serial controller.

Defining the 905xl Power Amplifier

Installing in a Rack

This section provides instructions for rack mounting the unit.

Before installing in a rack, be sure that the environment is within the recommended range:

• OPERATING TEMPERATURE:to40C (37″ to 104)
• STORAGE TEMPERATURE: to/OC(4Uto 1887)
• HUMIDITY: 10% to 90%, RHLnon-condensing

CAUTION! When installing on a 19″ rack, avoid hazards byY taking care that

1. It is located within the recommended environmental conditions, as the operating ambient temperature of a closed or multi-unit rack assembly may exceed the room ambient temperature.
2. Once the rack is mounted, enough air will still flow around the machine.
3. The machine is placed straight in the correct horizontal position.
4. You do not overload the circuit(s). When connecting the machine to the supply circuit, overloading the circuits might have a detrimental effect on overcurrent protection and supply wiring. Refer to the appropriate nameplate ratings for information. For example, for fuse replacement, see the value printed on the product label.
5. The machine is earthed (grounded) in a reliable way and is connected only to an electricity socket with grounding. Pay particular attention to situations where electricity is Supplied indirectly (when the power cord is not plugged directly into the socket in the wall), for example, when using an extension cable or a power strip, and when you use only the power cord that is supplied with the machine.

To rack-mount a machine:

1. Attach both ear brackets to the machine. To do so, remove the Screws from each side of the machine (3 on each side), and replace those screws through the ear brackets.
2. Place the ears of the machines against the rack rails, and insert the proper screws (not provided) through each of the four holes in the rack ears.
   Note:

    

   • In some models, the front panel may feature built-in rack ears
   • Detachable rack ears can be removed for desktop use Always mount the machine in the rack before you attach any cables or connect the machine to the power
   • If you are using a Kramer rack adapter kit (for a machine that is not 19″), see the Rack Adapters user manual for installation instructions available from our Webs site.

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.

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.
3. Connect the Output terminal block to a pair of speakers. Connect the “L+” and the “L-” terminal block connectors to the left speaker, and the “R+” and the “R-” terminal block connectors to the right speaker. Do not ground the loudspeakers.
4. Connect the power cord to the power socket and connect the cord to the mains electricity (not shown in Figure 2).
5. If required, connect a PC and/or controller to the RS 232 port, (see Section 6.1

Connecting to the 905xl via RS-232).
You can connect to the 905xl via an RS-232 connection using, for example, a PC. Note that a null-modem adapter/connection is not required.
To connect to the 905xl via RS-232:

• Connect the RS-232 9-pin D-sub rear panel port on the 905xl unit via a 9-wire straight cable (only pin 2 to pin 2, pin 3 to pin 3, and pin 5 to pin 5 need to be connected) to the RS-232 9-pin D-sub port on your PC

Operating the 905xl Power Amplifier

You can operate your 905xl using:

• The front panel buttons (see Section 7.1
• The Audio Control program (see ) Section 7.2
• RS-232 serial commands (see ) Section 10

Using the Front Panel Buttons

Adjusting the Volume
To adjust the volume of the output signal:

1. Press the up volume button (▲) to increase the volume.
2. Press the down volume button (▼) to decrease the volume.

Muting the Output
To mute the output:

• Press the Mute button. The button lights and the audio is muted

To turn on the output:

• Press the Mute button. The button no longer lights and the audio is unmuted at the previous volume level

Using the Audio Control Program
The 905xl Audio Control program allows you to adjust the volume and to operate equalization controls for treble, mid-level and bass which cannot be adjusted from the front panel.

To use the Audio Control Program:

1. Download and install the program on your PC from http://www.kramerelectronics.com.
2. Connect the 905xl to the correct COM port of the PC (see Section 6
3. Open the Audio Control program. The Audio Control window appears (see). Figure 3).
4. Select Input 1 or 2.
5. Make volume, equalization and balance adjustments by dragging the sliders in the window.
6. Turn loudness on and off by checking or unchecking the Loudness checkbox.

Upgrading the Firmware
For instructions on upgrading the firmware see “Upgrading the 905xl Firmware Using the FLIP Software”.

Technical Specifications

Default Communication Parameters

Protocol 3000

The 905xl can be operated using serial commands from a PC, remote controller or touch screen using the Kramer Protocol 3000.
This section describes:

• Kramer Protocol 3000 syntax (see Section 10.1
• Kramer Protocol 3000 commands (see ) Section 10.2

Kramer Protocol 3000 Syntax

• Host Message Format
  

  Start	Address (optional)	Body	Delimiter
  #	Destination_id@	Message	CR

• Simple Command
  Command string with only one command without addressing:

   

  Start	Body	Delimiter
  #	Command SP Parameter_1,Parameter_2,…	CR

• Command String
  Formal syntax with command concatenation and addressing:

   

  Start	Address	Body	Delimiter
  #	Destination_id@	Command_1 Parameter1_1,Parameter1_2,…| Command_2 Parameter2_1,Parameter2_2,…| Command_3   Parameter3_1,Parameter3_2,…|…	CR

• Device Message Format
  

  Start	Address (optional)	Body	delimiter
  ~	Sender_id@	Message	CR LF

Device Long Response
Echoing command:

• CR = Carriage return (ASCII 13 = 0x0D)
• LF = Line feed (ASCII 10 = 0x0A)
• SP = Space (ASCII 32 = 0x20)

Command Terms

• Command A sequence of ASCII letters (‘A’-‘Z’, ‘a’-‘z’ and ‘-‘). Command and parameters must be separated by at least one space.
• Parameters A sequence of alphanumeric ASCII characters (‘0’-‘9′,’A’-‘Z’,’a’-‘z’ and some special characters for specific commands). Parameters are separated by commas.
• Message string Every command entered as part of a message string begins with a message starting character and ends with a message closing character. Note: A string can contain more than one command. Commands are separated by a pipe ( ‘|’ ) character.
• Message starting character ‘#’ – For host command/query ‘~’ – For device response
• Device address (Optional, for K-NET) K-NET Device ID followed by ‘@’
• Query sign ‘?’ follows some commands to define a query request.
• Message closing character CR – For host messages; carriage return (ASCII 13) CRLF – For device messages; carriage return (ASCII 13) + line-feed (ASCII 10)
• Command chain separator character When a message string contains more than one command, a pipe ( ‘|’ ) character separates each command.
  Spaces between parameters or command terms are ignored.

Entering Commands
You can directly enter all commands using a terminal with ASCII communications software, such as HyperTerminal, Hercules, etc. Connect the terminal to the serial or Ethernet port on the Kramer device. To enter CR press the Enter key. ( LF is also sent but is ignored by the command parser).
For commands sent from some non-Kramer controllers like Crestron, some characters require special coding (such as, /X##). Refer to the controller manual.
Command Forms
Some commands have short name syntax in addition to long name syntax to allow faster typing. The response is always in long syntax.
Chaining Commands
Multiple commands can be chained in the same string. Each command is delimited by a pipe character (“|”). When chaining commands, enter the message starting character and the message closing character only once, at the beginning of the string and at the end.
Commands in the string do not execute until the closing character is entered.
A separate response is sent for every command in the chain.
Maximum String Length
64 characters

Kramer Protocol 3000 Commands

LIMITED WARRANTY

The warranty obligations of Kramer Electronics for this product are limited to the terms set forth below:

• What is Covered
  This limited warranty covers defects in materials and workmanship in this product.
• What is Not Covered
  This limited warranty does not cover any damage, deterioration or malfunction resulting from any alteration, modification, improper or unreasonable use or maintenance, misuse, abuse, accident, neglect, exposure to excess moisture, fire, improper packing and shipping (such claims must be presented to the carrier), lightning, power surges, or other acts of nature. This limited warranty does not cover any damage, deterioration or malfunction resulting from the installation or removal of this product from any installation, any unauthorized tampering with this product, any repairs attempted by anyone unauthorized by Kramer Electronics to make such repairs, or any other cause which does not relate directly to a defect in materials and/or workmanship of this product. This limited warranty does not cover cartons, equipment enclosures, cables or accessories used in conjunction with this product. Without limiting any other exclusion herein, Kramer Electronics does not warrant that the product covered hereby, including, without limitation, the technology and/or integrated circuit(s) included in the product, will not become obsolete or that such items are or will remain compatible with any other product or technology with which the product may be used.
• How Long Does this Coverage Last
  Seven years as of this printing: please check our Web site for the most current and accurate warranty information.
• Who is Covered
  Only the original purchaser of this product is covered under this limited warranty. This limited warranty is not transferable to subsequent purchasers or owners of this product.
• What Kramer Electronics will do
  Kramer Electronics will, at its sole option, provide one of the following three remedies to whatever extent it shall deem necessary to satisfy a proper claim under this limited warranty

   

  • Elect to repair or facilitate the repair of any defective parts within a reasonable period of time, free of any charge for the necessary parts and labor to complete the repair and restore this product to its proper operating condition. Kramer Electronics will also pays the shipping costs necessary to return this product once the repair is complete.
  • Replace this product with a direct replacement or with a similar product deemed by Kramer Electronics to perform substantially the same function as the original product.
  • Issue a refund of the original purchase price less depreciation to be determined based on the age of the product at the time remedy is sought under this limited warranty.
• What Kramer Electronics will not do Under This Limited Warranty
  If this product is returned to Kramer Electronics or the authorized dealer from which it was purchased or any other party authorized to repair Kramer Electronics products, this product must be insured during shipment, with the insurance and shippin9 charges prepaid by you. Iif this product is returned uninsured, you assume all risks oft loss or damage during shipment. Kramer Electronics will not be responsible for any cOsts related to the removal or re-installation of this product from or into any installation. Kramer Electronics will not be responsible for any costs related to any setting up this product, any adjustment of user controls or any programming required for a specific installation of this product.
• How to Obtain a Remedy under this Limited Warranty
  To obtain a remedy under this limited warranty, you must contact either the authorized Kramer lectronics reseller from whom you purchased this product or the Kramer Electronics office nearest yOu. For a list of authorized Kramer Electronics resellers and/or Kramer Electronics authorized service providers, please visit Our web site at www.kramerelectronics.com or contact the Kramer Electronics office nearest you. In order to pursue any remedy under this limited warranty, you must possess an original, dated receipt as proof of purchase from an authorized Kramer Electronics reseller. If this product is returned under this limited warranty, a return authorization number, obtained from Kramer Electronics, will be required. You may also be directed to an authorized reseller or a person authorized by Kramer Electronics to repair the product. If it is decided that this product should be returned directly to Kramer Electronics, this product should be properly packed, preferably in the original carton, for shipping. Cartons not bearing a return authorization number will be refused.
• Limitation on Liability
  THE MAXIMUM LIABILITY OF KRAMER ELECTRONICS UNDER THIS LIMITED WARRANTY SHALL NOT EXCEED THE ACTUAL PURCHASE PRICE PAID FOR THE PRODUCT. TO THE MAXIMUM EXTENT PERMITTED BY LAW, KRAMER ELECTRONICS IS NOT RESPONSIBLE FOR DIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY BREACH OF WARRANTY OR CONDITION, OR UNDER ANY OTHER LEGAL THEORY. Some countries, districts or states do not allow the exclusion or limitation of relief, special, incidental, consequential or indirect damages, or the limitation of liability to specified amounts, so the above limitations or exclusions may not apply to you.
• Exclusive Remedy
  TO THE MAXIMUM EXTENT PERMITTED BY LAW, THIS LIMITED WARRANTY AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND CONDITIONS, WHETHER ORAL OR WRITTEN, EXPRESS OR IMPLIED. TO THE MAXIMUM EXTENT PERMITTED BY LAW, KRAMER ELECTRONICS SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, WARRANTIES OF MERCHANTABILITY AND FITNESS FORA PARTICULAR PURPOSE. IF KRAMER ELECTRONICS CANNOT LAWFULLY DISCLAIM OR EXCLUDE IMPLIED WARRANTIES UNDER APPLICABLE LAW, THEN ALL IMPLIED WARRANTIES COVERING THIS PRODUCT, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL APPLY TO THIS PRODUCT AS PROVIDED UNDER APPLICABLE LAW.
  IF ANY PRODUCT TO WHICH THIS LIMITED WARRANTY APPLIES IS A “CONSUMER PRODUCT” UNDER THE MAGNUSON- MOSS WARRANTY ACT (15 U.S.C.A. $2301, ET SEQ.) OR OTHER APPLICABLE LAW, THE FOREGOING DISCLAIMER OF IMPLIED WARRANTIES SHALL NOT APPLY TO YOU, AND ALL IMPLIED WARRANTIES ON THIS PRODUCT, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR THE PARTICULAR PURPOSE, SHALLAPPLY AS PROVIDED UNDER APPLICABLE LAW.
• Other Conditions
  This limited warranty gives you specific legal rights, and you may have other rights which vary from country to country or state to state. This limited warranty is void if (0) the label bearing the serial number of this product has been removed or defaced, (i) the product is not distributed by Kramer Electronics or (ii) this product is not purchased from an authorized Kramer Electronics reseller. If you are unsure whether a reseller is an authorized Kramer Electronics reseller, please visit our Web site at www.kramerelectronics.com or contact a Kramer Electronics office from the list at the end of this document. Your rights under this limited warranty are not diminished if you do not complete and return the product registration form or complete and submit the online product registration form. Kramer Electronics thanks you for purchasing a Kramer Electronics product. We hope it will give you years of satisfaction.

For the latest information on our products and a list of Kramer distributors, visit our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
Web site:
E-mail: www.kramerelectronics.com
[email protected]

SAFETY WARNING

Disconnect the unit from the power supply before opening and servicing

FAQS