907xl - Mobile Phone Kramer - Free user manual and instructions

USER MANUAL 907xl Kramer

This guide helps you install and use your product for the first time. For more detailed information, go to http://www.kramerelectronics.com/support/product_downloads.asp to download the latest manual or scan the QR code on the left.

Step 1: Check what's in the box

907xl Power Amplifier/Mixer

1 Power supply (24V DC)

1 Quick Start sheet

4 Rubber feet

Illustration of a beige cardboard box with a yellow lid and a small inset showing a letter 'K' (no text or symbols on the box itself)

Save the original box and packaging in case your 907xl needs to be returned to the factory for service.

Step 2: Install the 907xl

Mount the machine in a rack (using the RK-1 rack adapter) or place on a table.

Step 3: Connect the inputs and outputs

Always switch off the power on each device before connecting it to your 907xl.

graph TD
    A["Unbalanced Source"] --> B["INPUT 1 L"]
    A --> C["INPUT 2 L R + - G + -"]
    D["Balanced Source"] --> E["OUTPUT + L - + R -"]
    F["Speakers"] --> G["GAIN 24V DC"]
    B --> H["R"]
    C --> I["+ - G + -"]
    E --> J["Ground"]

Always use Kramer high-performance cables for connecting AV equipment to the 907xl.

Step 4: Connect the power

Connect the 24V DC power adapter to the 907xl and plug the adapter into the mains electricity.

Step 5: Operate the 907xl

graph LR
    A["Adjust the gain for each input using the DIP-switches"] --> B["GAIN"]
    B --> C["MUTE"]
    C --> D["INPUT 1 LEVEL"]
    C --> E["INPUT 2 LEVEL"]
    C --> F["VOLUME"]
    D --> G["Adjust the level for each input using the INPUT 1 and INPUT 2 Level knobs"]
    E --> G
    F --> H["Adjust the output volume using the VOLUME knob"]
    I["Mute the output by pressing the MUTE button"] --> C

Contents

1 Introduction 1

2 Getting Started 2

2.1 Achieving the Best Performance 2

2.2 Safety Instructions 3

2.3 Recycling Kramer Products 3

3 Overview 4

3.1 Defining the 907xl Power Amplifier/Mixer 4

4 Connecting the 907xl Power Amplifier/Mixer 6

4.1 Connecting the Stereo Audio Inputs 7

5 Technical Specifications 8

Figures

Figure 1: 907xl Power Amplifier/Mixer 5

Figure 2: Connecting the 907xl Power Amplifier/Mixer 7

Figure 3: Connecting a Balanced Input to the Balanced Stereo Audio Input 7

Figure 4: Connecting an Unbalanced Input to the Balanced Stereo Audio Input 7

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 13 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; GROUP 11: Sierra Video Products; GROUP 12: Digital Signage; and GROUP 13: Audio.

Congratulations on purchasing your Kramer 907xl Power Amplifier/Mixer, 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 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/support/product_downloads.asp 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 Kramer 907xl 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 Kramer Electronics input power wall adapter that is provided with the unit

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

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/.

3 Overview

The 907xl is a high-performance power amplifier for line-level stereo audio signals. It accepts a balanced stereo audio signal on a terminal block connector and an unbalanced stereo signal on RCA connectors. It delivers 40 watts per channel into an 8Ω load.

The 907xl features:

• High efficiency Class D operation
• One volume control knob for each input & mute button
• Gain control DIP-switches
- Mute and On indicator LEDs
- A compact MultiTOOLS® enclosure that allows up to 4 units to be rack mounted side-by-side in a 1U rack space with the optional RK-1 universal rack adapter

3.1 Defining the 907xl Power Amplifier/Mixer

This section defines the 907xl.

1 2 3 4 5 INPUT 1 L R INPUT 2 L R + - G + - OUTPUT + L - + R - GAIN 24V DC 1 2

6 7 8 9 10 11 INPUT 1 LEVEL INPUT 2 LEVEL VOLUME MUTE ON Power Amplifier / Mixer 907XL

Figure 1: 907xl Power Amplifier/Mixer

#	Feature	Function
1	INPUT 1 RCA Connectors	Connect to an unbalanced stereo audio source
2	INPUT 2 Terminal Block Connector	Connect to a balanced stereo audio source
3	OUTPUT Terminal Block Connector	Connect to a balanced stereo acceptor (speakers)
4	GAIN DIP-switches	4-position switch for setting the basic gain level
5	24V DC Connector	+24V DC for powering the unit
6	MUTE Pushbutton	Press to disable/enable the audio output
7	INPUT 1 LEVEL Knob	Turn to raise or lower the input 1 volume
8	INPUT 2 LEVEL Knob	Turn to raise or lower the input 2 volume
9	VOLUME Knob	Turn to raise or lower the output volume
10	MUTE LED	Lights yellow when the volume is disabled
11	ON LED	Lights green when receiving power

4 Connecting the 907xl Power Amplifier/Mixer

To connect the 907xl as illustrated in the example in Figure 2:

Always switch off the power to each device before connecting it to your 907xl. After connecting your 907xl, connect its power and then switch on the power to each device.

1. Connect the unbalanced stereo audio source (for example, a stereo audio player) to the INPUT 1 RCA connectors.
2. Connect the balanced stereo audio source (for example, a stereo audio player) to the INPUT 2 terminal block connector.
3. Connect the OUTPUT terminal block connectors to the acceptors (a pair of speakers).

Do not ground the loudspeakers.

1. Connect the 24V DC power adapter to the power socket and connect the adapter to the mains electricity (not shown in Figure 2.)

2. If necessary adjust the basic volume level by setting the GAIN DIP-switches as shown here.

1. Adjust the output volume by turning the VOLUME potentiometer.

graph TD
    A["STOOLTM Device"] -->|Audio| B["Stereo Audio Player"]
    A -->|Audio| C["Stereo Audio Player"]
    A -->|Audio| D["Speakers"]

Figure 2: Connecting the 907xl Power Amplifier/Mixer

4.1 Connecting the Stereo Audio Inputs

The 907xl has both unbalanced and balanced stereo audio input connectors. Figure 3 and Figure 4 illustrate how to wire a balanced/unbalanced to the balanced audio input connection:

L + - G + - R

Figure 3: Connecting a Balanced Input to the Balanced Stereo Audio Input

L + - G + - □ □ □ □ □

Figure 4: Connecting an Unbalanced Input to the Balanced Stereo Audio Input

5 Technical Specifications

INPUT:	1 balanced stereo audio on a terminal block connector, 1 unbalanced stereo audio on RCA connectors
OUTPUT:	Speaker output on a terminal block connector
OUTPUT POWER:	40W per channel into 8Ω
OUTPUT MUSIC POWER:	150W per channel into 8Ω
INPUT SENSITIVITY:	1.2Vrms
AMPLIFIER TYPE:	Class D
VOLTAGE GAIN:	36dB (x10)
BANDWIDTH (-3dB):	25kHz
S/N RATIO:	66dB
COUPLING:	Inputs: AC, Outputs: DC
AUDIO THD + NOISE:	1.2%
AUDIO 2nd HARMONIC:	1%
POWER CONSUMPTION:	24V DC, 2.2A
CONTROLS:	2 gain DIP-switches, mute button, 2 input level knobs, 1 volume knob
OPERATING TEMPERATURE:	0° to +40°C (32° to 104°F)
STORAGE TEMPERATURE:	-40° to +70°C (-40° to 158°F)
HUMIDITY:	10% to 90%, RHL non-condensing
DIMENSIONS	10.7cm x 10.4cm x 4.0cm (4.2" x 4.1" x 1.6") W, D, H
WEIGHT:	0.32kg (0.7lbs)
INCLUDED ACCESSORIES:	Power supply
OPTIONS:	RK-1 19" rack mount adapter
Specifications are subject to change without notice at http://www.kramerelectronics.com

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:

1. 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 pay the shipping costs necessary to return this product once the repair is complete.
2. 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.
3. 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 shipping charges prepaid by you. If this product is returned uninsured, you assume all risks of 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 Electronics 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 FOR A 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, SHALL APPLY 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 (i) the label bearing the serial number of this product has been removed or defaced, (ii) the product is not distributed by Kramer Electronics or (iii) 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 you can find updates to this user manual.

We welcome your questions, comments, and feedback.

Web site: www.kramerelectronics.com

E-mail: [e-mail]

SAFETY WARNING

Disconnect the unit from the power supply before opening and servicing

P/N: 2900-300028

Rev: 2