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Manual JEFF ROWLAND 12

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Summary
  • JEFF ROWLAND 12 - page 1

    Model 12 Mono Power Amplifier Owner’s Manual Model 12 Mono Power Amplifier Owner’s Manual ...

  • JEFF ROWLAND 12 - page 2

    Introduction Introduction W W elcome to the Jeff Rowland Design Group “family” and congratulations on your purchase of what is unquestionably one of the world’s finest audio power amplifiers. W W ith its combination of features such as numerous function control and interconnect possibilities, precision electronic circuitry, and accurately mac ...

  • JEFF ROWLAND 12 - page 3

    Product Features Product Features • XLR input connectors for bal anced (Differential Mode  ) system configuration. • RCA input connectors for unbalanced system configurations. • Selectable overall gain of 26 or 32 dB. • User selectable switching between balanced and unbalanced connections. • 12V remote ON/OFF power switching con nector ...

  • JEFF ROWLAND 12 - page 4

    Contents Contents Model 12 Model 12 Amplifier Amplifier Section Section Model 12 Model 12 Power Power Supply Supply DC Power DC Power Supply Cable Supply Cable AC Power Cable AC Power Cable Warranty Card Warranty Card ...

  • JEFF ROWLAND 12 - page 5

    Initial Inspection Initial Inspection I I nspect the shipping container for damage. If the shipping container, packing material, amplifier, or accessories are dama ged or missing, notify your dealer and the shipper (if a claim is to be made) immediately. Note: Note: Many shippers require notification and inspection within twenty - four hours of del ...

  • JEFF ROWLAND 12 - page 6

    Care, Cleaning, and Maintenance Care, Cleaning, and Maintenance ...

  • JEFF ROWLAND 12 - page 7

    Care Care T T he Model 12 Mono Power Ampli fier is finely constructed from pieces of solid aluminum. The surface of the unit is cut in a unique process that uses a diamond tipped blade. This process was refined over many years to produce an artistic and attractive finish. The front, top, bottom and side panels are then finished with fine automobile ...

  • JEFF ROWLAND 12 - page 8

    Amplifier Front and Rear Panel Function Controls Amplifier Front and Rear Panel Function Controls Amplifier Front Panel Amplifier Front Panel Amplifier Rear Panel NEUTRIK NEUTRIK PUSH Standby/Power Button Standby/Power Button Power Indicator LED Power Indicator LED Input Select Switch Input Select Switch ...

  • JEFF ROWLAND 12 - page 9

    Amplifier Front and Rear Panel Function Cont Amplifier Front and Rear Panel Function Cont rols rols B B efore attempting any system interconnection, please familiarize yourself with the front and rear panel controls of the Model 12 Mono Power Amplifier. The descriptions below refer to the diagrams above. Front Panel Front Panel 1 1 FRONT PANEL STAN ...

  • JEFF ROWLAND 12 - page 10

    Rear Panel Power Connections Rear Panel Power Connections Amplifier Rear Panel NEUTRIK NEUTRIK PUSH Power Supply Re ar Panel AC Power Cable AC Power Cable Connector Connector DC Power Supply DC Power Supply Cable Connector Cable Connector Volts AC Volts AC Indicator Indicator ...

  • JEFF ROWLAND 12 - page 11

    Installation Installation L L ocate the amplifier as close as possible to its final installation point. Allow access to the rear panel for making connections. The Model 12 Mono Power Amplifier is convection cooled, eliminating the need for fan or forced - air c ooling. When operating, the chassis should have at least two (2) inches of air space aro ...

  • JEFF ROWLAND 12 - page 12

    Signal Connections and Remote Signal Connections and Remote Amplifier Rear Panel NEUTRIK NEUTRIK PUSH Power Supply Rear Panel Balanced Input Balanced Input Connector Connector 12V Remote 12V Remote Connector Connector Input Select Input Select Switch Switch Speaker Speaker Output Output Parallel Input Parallel Input Connector Connector ...

  • JEFF ROWLAND 12 - page 13

    Signal Connections and Remote Signal Connections and Remote T T he Model 12 Mono Power Amplifier offers unprecedented compatibility with associated audio components. When Connecting or disconnecting speaker or interconnect cables, it is n ecessary to place the amplifier in Standby mode (orange POWER INDICATOR LED on the front panel OFF). 1 1 If you ...

  • JEFF ROWLAND 12 - page 14

    Parallel Connection Diagram Parallel Connection Diagram NEUT RIK NEUTRIK PUS H NEUTR IK NEUTRI K PUSH + and – Speaker Wire Outputs to Loudspeakers XLR Interconnect from Preamp Output 0.5 Meter Speaker Cable Jumper from + to + 0.5 Meter Speaker Cable Jumper from – to – 0.5 Meter XLR Interconnect ...

  • JEFF ROWLAND 12 - page 15

    Parallel Connection Instructions Parallel Connection Instructions The Model 12 Mono Power Amplifier provides 200 watts of audio output power, sufficient to drive nearl y any loudspeaker. In a few instances, there may be a need for more output current in order to drive a very low impedance or current demanding loudspeaker. The Model 12 Mono Power Am ...

  • JEFF ROWLAND 12 - page 16

    Internal Function Controls Internal Function Controls Overall Gain Overall Gain T T he overall gain of the Model 12 Mono Power Amplifi er can be adjusted between 26 dB and 32 dB. The setting from the factory is 26 dB, which is adequate for the majority of applications, though in a small number of situations involving low efficiency systems the high ...

  • JEFF ROWLAND 12 - page 17

    Model 12 Mono Power Amplifier Specifications Model 12 Mono Power Amplifier Specifications Output Power: Output Power: Continuous RMS watts @ 8 ohms 200 watts @ 4 ohms 350 watts Power Bandwidth: Power Bandwidth: DC to 160 kHz, - 3 dB Slew Rate: Slew Rate: 30 volts/microsecond THD + THD + Noise: Noise: <.008% Damping Factor: Damping Factor: >10 ...

  • JEFF ROWLAND 12 - page 18

    Basic Troubleshooting Basic Troubleshooting A A summary of fault conditions and their causes and remedies are listed below. The Model 12 Mono Power Amplifier can produce high power levels that, without well - designed protection circuitry, could damage loudspeakers. Therefore, most fault conditions will result in the Model 12 reverting into Standby ...

  • JEFF ROWLAND 12 - page 19

    Additional Additional Information Information I I f you have any additional questions regarding the installation or operation of the Model 12 Mono Power Amplifier, please contact your authorized Jeff Rowland Design Group dealer or check the Jeff Rowland Design Group web site at http://www. jeffrowland.com. Troubleshooting Troubleshooting and Inform ...

  • JEFF ROWLAND 12 - page 20

    Post Office Box 7231 Colorado Springs, Colorado 80933 USA ...

Manufacturer JEFF ROWLAND Category Stereo Amplifier

Documents that we receive from a manufacturer of a JEFF ROWLAND 12 can be divided into several groups. They are, among others:
- JEFF ROWLAND technical drawings
- 12 manuals
- JEFF ROWLAND product data sheets
- information booklets
- or energy labels JEFF ROWLAND 12
All of them are important, but the most important information from the point of view of use of the device are in the user manual JEFF ROWLAND 12.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals JEFF ROWLAND 12, service manual, brief instructions and user manuals JEFF ROWLAND 12. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product JEFF ROWLAND 12.

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A complete manual for the device JEFF ROWLAND 12, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use JEFF ROWLAND 12 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of JEFF ROWLAND 12.

A complete JEFF ROWLAND manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual JEFF ROWLAND 12 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the JEFF ROWLAND 12, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the JEFF ROWLAND 12, that we can find in the current document
3. Tips how to use the basic functions of the device JEFF ROWLAND 12 - which should help us in our first steps of using JEFF ROWLAND 12
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with JEFF ROWLAND 12
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of JEFF ROWLAND 12 in a specific country, if it was not possible to solve the problem on our own.

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