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Related Manuals for JEFF ROWLAND 301
Summary of Contents for JEFF ROWLAND 301
- Page 1 Model 301 New Version Serial Numbers Ma0072 - MA0161 Mono Power Amplifier...
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Page 3: Table Of Contents
Table of Contents Introduction............................4 Product Features..........................5 Initial Inspection..........................7 Package Contents..........................7 Unpacking the Amplifier........................9 Maintenance, Cleaning, and Protection..................11 Installation, Use, and Care.......................12 Front Panel Functions and Indicators....................15 Rear Panel Power Connections......................17 Rear Panel Signal Connections......................19 Internal Adjustments........................20 Specifications..........................21 Dimensions........................22 Additional and Contact Information....................23 3 3 3 3... -
Page 4: Introduction
Introduction elcome to the Jeff Rowland Design Group “family ” and congratulations on your purchase of what is With unquestionably one of the world's finest audio power amplifiers. its combination of features such as numerous function control and interconnect possibilities, precision electronic circuitry, exceptional efficiency, and accurately machined chassis components throughout, your Model 301 Mono Power Amplifier will offer you many years of musically satisfying enjoyment. -
Page 5: Product Features
Product Features XLR input connectors for balanced system configuration. RCA input connectors for unbalanced system configurations. User selectable switching between balanced and unbalanced connections. Transformer coupled inputs provide universal compatibility with other components and eliminate ground loop noise and EMI. Transformer coupled outputs produce ideal amplifier-to-loudspeaker impedance, damping, and current matching. -
Page 6: Package Contents
Package Contents Compliant Isolation AC Power Cable Pads Care WARRANTY REGISTRATION WNER ’ ANUAL Warranty Card Owner’s Manual Model 301 Mono Power Amplifier... - Page 7 We strongly suggest that you save all packing materials. If the amplifier is ever returned to your dealer or Jeff Rowland Design Group, the original packing materials must be used for shipment to avoid damage. Neither Jeff Rowland Design Group nor the shipper can be held responsible for damages incurred during transit if the original factory packing is not used.
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Page 8: Unpacking The Amplifier
Unpacking the Amplifier 1 1 1 1 1 1... - Page 9 Unpacking the Amplifier The Model 301 is a large and heavy amplifier. Due caution should be taken when unpacking and installing the amplifier to avoid injury or damage to the amplifier. The Model 301 should be unpacked by at least two people, however it is possible for one person to unpack the amplifier safely. There should be a portion of carpet or soft, padded cloth to stand the amplifier on when unpacking it from the shipping box.
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Page 10: Maintenance, Cleaning, And Protection
Amplifier Maintenance, Cleaning, and Protection... - Page 11 If you have any questions about the care or cleaning of your Model 301 power amplifier, please contact your dealer or the Jeff Rowland Design Group factory before attempting to clean the chassis.
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Page 12: Installation, Use, And Care
Jeff Rowland Design Group. Other wise, the factory warranty will be immediately voided. The Model 301 Mono Power Amplifier can be operated at a nominal 115 or 230 volts AC. The amplifier must be wired for the correct AC input voltage before operation or serious damage will result. - Page 13 Shorting of the outputs will result in certain damage to the output section. The Model 301 is designed to perform optimally with no adjustments or maintenance. In the event of servicing, do not attempt to open the top cover of the amplifier and refer all service...
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Page 14: Front Panel Functions And Indicators
Amplifier Front Panel Functions and Indicators Front Panel Front Panel Power/Standby Button Power/Standby Indicator... - Page 15 Amplifier Front Panel Functions and Indicators efore attempting any system interconnection, please familiarize yourself with the front panel control of the Model 301 Mono Power Amplifier. The descriptions below refer to the illustration on the adjacent page. FRONT PANEL STANDBY/POWER BUTTON: Press this button to operate the amplifier. Press again to place the amplifier in Standby mode.
- Page 16 Amplifier Rear Panel P ower Connections UNBALANCED UNBALANCED INPUT INPUT INPUT INPUT SELECT SELECT BALANCED BALANCED INPUT INPUT MODEL 301 MODEL 301 MONO POWER AMPLIFIER MONO POWER AMPLIFIER MADE IN U.S.A. MADE IN U.S.A. SPEAKER SPEAKER SPEAKER SPEAKER OUTPUT OUTPUT...
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Page 17: Rear Panel Power Connections
Connect the 12V Remote ON/OFF Mini-plug Connector (See Below). Note: Due to the exceptionally low power consumption rating of the Model 301, it is recommended that the unit not be disconnected from AC mains unless the amplifier is to be moved or reinstalled in another location. - Page 18 Parallel and Series Output Configuration he Model 301 can be configured for the best possible interface with any reasonable loudspeaker load or design. Two configuration options are available: parallel and series. The parallel configuration will provide high current capability, while the series configuration will provide high voltage capability. In...
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Page 19: Rear Panel Signal Connections
3 3 3 1 1 1 UNBALANCED UNBALANCED INPUT INPUT INPUT INPUT SELECT SELECT BALANCED BALANCED INPUT INPUT MODEL 301 MODEL 301 MONO POWER AMPLIFIER MONO POWER AMPLIFIER MADE IN U.S.A. MADE IN U.S.A. SPEAKER SPEAKER SPEAKER SPEAKER OUTPUT OUTPUT... - Page 20 The Model 301 will only accept spade terminations for loudspeaker cables. Banana plugs or bare wire connections cannot be used and must be reterminated with spade connections. The Model 301 has two sets of output binding posts per amplifier. Both sets of binding posts are active with no difference in signal quality.
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Page 21: Internal Adjustments
Internal Adjustments Overall Gain he overall gain of the Model 301 Mono Power Amplifier 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 some systems involving low efficiency loudspeakers may require the higher gain setting. -
Page 22: Specifications
Model 301 Mono Power Amplifier Specifications Output Power: Continuous RMS watts, all channels driven Parallel Mode Series Mode 600 watts. 1800 watts. @ 8 ohms 1200 watts. @ 4 ohms 5 Hz - 60 kHz, -3 dB. Power Bandwidth: >90 Amps. -
Page 23: Dimensions
Dimensions summary of the amplifier chassis dimensions is indicated below. 18.3 in. (46.9 cm) 14.5 in. (36.8 cm) 15.5 in. (39.4 cm) - Page 24 Additional Information f you have any additional questions regarding the installation or operation of the Model 301 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.
- Page 26 2911 N. Prospect St. Colorado Springs, Colorado 80907 USA...