Instruction/ maintenance manual of the product Model 2 JEFF ROWLAND
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JE F F R O WL AN D DE SI GN G R OU P.
Model 2 Stereo Power Amplifier Owner’ s Manual.
Introduction 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.
Product Features þ XLR Balanced Input jacks for balanced (Differential Mode™) system configurations þ XLR to RCA Input adapters included þ User-selectable overall gain of 26 or 32 dB þ User-sele.
1 2 3 4 5 6 Contents.
Initial Inspection I nspect the shipping container for damage. If the shipping container , packing material, amplifier or accessories are damaged or missing, notify your dealer and the shipper (if a claim is to be made).
Front & Rear Panel Function Controls A 1 2.
Front & Rear Panel Function Controls B efore attempting any system interconnection, please familiarize yourself with the front and rear panel controls of the Model 2 Amplifier . The descriptions below refer to the numbers associated with the features in the diagram above.
2 1 3 Rear Panel Power Connections.
Installation L ocate the Amplifier as close as possible to its final installation point. Allow access to the rear panel for making connections. The Model 2 Amplifier is convection cooled, eliminating the need for fan or forced air cooling. When operating, the chassis should have at least two (2) inches of air space around the heatsink areas.
2 1 Signal Connections 4 3 3.
Signal Connections T he Model 2 amplifier offers unprecedented compatibility with associated audio components. When connecting or disconnecting speaker or interconnect cables, it is only necessary that the FRONT P ANEL ST ANDBY/ POWER button be pressed to switch the amplifier to standby mode.
Operation A fter following the procedures outlined in the Installation/Rear Panel Power Connections and Signal Connections sections, the Amplifier can be turned on by pressing the FRONT P ANEL ST ANDBY/POWER button. Allow approximately twenty (20) minutes for the amplifier to reach operating temperature and maximum performance potential.
Performance Specifications Output Power Continuous RMS watts @ 8 ohms 75 watts @ 4 ohms 150 watts Power Bandwidth 0.1 Hz to 160 kHz, -3 dB Slew Rate 80 volts per microsecond THD and Noise Less than 0.
Basic T roubleshooting A summary of fault conditions, their causes and remedies, are listed below. The Model 2 Amplifier can produce high power levels which, without well designed pr otection circuitry, could damage loudspeaker s.
Condition FRONT P ANEL ST ANDBY/POWER button illuminates normally but RIGHT , LEFT or both Amplifier CHANNELS do no operate or warm up to normal operating temperature. AC MAINS CIRCUIT BREAKER (rear panel) switches off or will not remain on. 50/60 Hz hum noise in loudspeakers.
I f you have any additional questions regarding installation or operation, please contact your authorized Jeff Rowland Design Group Dealer . JEFF R O WL AND DESI GN G ROUP.
An important point after buying a device JEFF ROWLAND Model 2 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JEFF ROWLAND Model 2 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JEFF ROWLAND Model 2 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JEFF ROWLAND Model 2 you will learn all the available features of the product, as well as information on its operation. The information that you get JEFF ROWLAND Model 2 will certainly help you make a decision on the purchase.
If you already are a holder of JEFF ROWLAND Model 2, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JEFF ROWLAND Model 2.
However, one of the most important roles played by the user manual is to help in solving problems with JEFF ROWLAND Model 2. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JEFF ROWLAND Model 2 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
