Summary of 625
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Model 625 stereo amplifier operational manual revb1 ! © jeff rowland design group 2011 ! All rights reserved.
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Important safety instructions the amplifier has been designed to operate at the highest level of efficiency and performance in any normal operating situation; however, there are a few important use and care principles that must be kept in mind when operating the amplifier: ! Read these instructions....
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The crossed-out wheeled bin is the european union symbol for indicating separate collection for electrical and electronic equipment. This product contains electrical and electronic equipment which should be reused, recycled or recovered and should not be disposed of with unsorted regular waste. Plea...
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Jeff rowland design group, inc. Strives to manufacture the very finest possible equipment and therefore reserves the right to make changes in design and improvements upon its previously manufactured models. The above warranty is the sole warranty given by jeff rowland design group, inc. And is in li...
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Note from jeff rowland design group elcome to the jeff rowland design group “family” and congratulations on your purchase of what is unquestionably one of the world’s finest amplifiers. With its combination of features such as precision electronic circuitry, exceptional efficiency, and accurately ma...
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Table of contents .................................................................................................................... Special design features 6 ...................................................................................................................... Maintenance and care...
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Special design features machined aluminum chassis: precision-machined chassis with integrated heat-sinks, milled from a solid block of aircraft grade aluminum, provides exceptional thermal heat transfer/dissipation, rfi/emi shielding, and resonance control.. Composite circuit architecture: unique co...
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Flexible 20 amp ac power: 20 amp ac power inlet accepts a wide variety of after- market high-performance power cables. Front panel standby button: illuminated front panel push-button switches the amplifier into standby mode ( remote on/off: a 1/8” (3.5mm) mini plug connector on rear panel permits am...
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Maintenance and care all jeff rowland design group products are designed to provide a lifetime of enjoyment and listening pleasure. Chassis is sealed to prevent dust from entering the interior of the chassis and thus should never need interior cleaning during the lifetime of the product. All interna...
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Unpacking and placement initial inspection inspect the shipping container for damage. If any portion of 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) immediately. Note: many shippers require n...
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Front panel figure 1: front panel 1. Front panel power button. Press this button to operate the amplifier. Press again to place the amplifier in standby mode. 2. Power indicator ring. This white ring will illuminate when the amplifier is operational. Page 10
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Rear panel figure 2: rear panel 1. Ac mains input connector. Install the ac power cable into the ac input connector between the amplifier and your ac mains outlet.. 2. Inputs. Two (2) pair balanced (xlr). 3. Loudspeaker outputs. Unscrew the knob that secures the speaker output connectors on both the...
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Specifications output power 300 watts @ 8 ohms / 550 watts @ 4 ohms frequency response 5 hz – 350 khz s/n ratio 95 db, ref. 1.0 watt @ 8 ohm load frequency response 10 hz – 300 khz, -3 db @ 8 ohms output noise crosstalk >91 db @ 1 khz, 74 db @ 20 khz input impedance 10k ohms thd + noise 0.005% @ 1 k...