Important Safety Precautions and Explanation of Symbols ! The exclamation point within an equilateral triangle is intended to alert the user to the presence of important installation, operation, and service instructions in this manual. The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltages within the enclosure that may be of sufficient magnitude to constitute the risk of electrical shock to the user.
Protect power supply cables from being pinched, walked on, or otherwise damaged. Be especially careful where the power cable enters the power outlet and the PA 2-250 unit. Only connect the PA 2-250 to an electrical outlet or extension cord of appropriate type and rating. DO NOT defeat the safety purpose of a grounding or polarized plug by removing ground pins or using unsafe adapters. A polarized plug has two blades - one wider than the other.
FCC Interference Statement Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
PA 2-250 STEREO POWER AMPLIFIER Contents Important safety precautions and explanation of symbols Introduction..................................................................................................2 The PA 2-250...............................................................................................2 About this manual........................................................................................2 Mechanical and environmental..........................................................
Introduction Thank you for choosing the PA 2-250 Stereo Power Amplifier. The PA 2-250 combines the superb sound quality and virtually endless power reserves necessary to satisfy a discerning audiophile. It posesses with the flexibility and reliability demanded by both customers and professional installers.
Mechanical and Environmental SIDE TOP PA 2-250 SHERBOURN PA 2-250 19” 18” RACK HANDLES 1/16” 17” 19” FRONT 5.125” 6” Dimensions: 17” wide x 6” high x 19” deep (includes feet, binding posts, no rack ears) (boxed: 22” x 24” x 11” high) Weight: 48 lbs/22 kg (unboxed); 59.5 lbs/27 kg (boxed) Rack mountable: Optional rack mount brackets. Power requirements: 115 VAC or 230 VAC +/- 10% @ 50 / 60 Hz (selectable by rear-panel switch) Power consumption: 650 watts, under maximum load.
Inputs and Outputs Analog inputs: Each channel has independent, switch selectable balanced (XLR) and unbalanced (RCA) inputs. Unbalanced inputs are audiophile grade, machined, gold-plated connectors. Input sensitivity (for full output): 1.7 V (8 ohms); 1.
Installation Tips Inputs and outputs Balanced (XLR) audio interconnects will provide better noise immunity, and are best suited to long cable runs or noisy environments. Be sure to select the correct input for each channel using the appropriate rear panel switches. Rack mounting The PA 2-250 is quite heavy. Locate the PA 2-250 on racks, stands, or shelves rated to support at least 100 pounds. We recommend using the (optional) Sherbourn rack mount adapters.
Configuration • • Verify that the Sherbourn PA 2-250 is configured for the correct operating voltage for your area. (Voltage is set via the Input Voltage switch on the rear panel of the PA 2-250). Verify that all rear panel Input Selector switches are set correctly (balanced or unbalanced) for each input. Note: Only one input (balanced OR unbalanced) on each channel is active at once. • Verify that the rear panel Status LEDs switch is set to On if you want the front panel status LEDs to be active.
Performance Specifications Analog inputs: Each channel has independent, switch selectable, balanced (XLR) and unbalanced (RCA) inputs Input sensitivity (for full output): 1.7 V (8 ohms); 1.
Features The PA 2-250 Stereo Power Amplifier combines the latest cutting edge technology, solid engineering, and high quality components to deliver superior sound quality, performance, and features.
Operation Turning on the AC power The AC mains power on the PA 2-250 is controlled by the Power rocker switch located on the rear panel above the power cable (in the center of the panel). Once the AC power is turned on, the PA 2-250 will remain in Standby mode until the On/Off push button on the front panel is pressed or the Trigger Input is asserted.
Periodic Maintenance The PA 2-250 requires no periodic maintenance. Cleaning the PA 2-250 • • If necessary, the PA 2-250 should be cleaned gently with a soft rag. If something sticky gets on the front panel or case of the PA 2-250, it should be cleaned with a mild cleaning solution applied to a soft rag, followed by wiping with a clean rag dampened with plain water, and drying with a soft dry rag or cloth. Note: DO NOT spray water or cleaning solution directly onto the PA 2-250 or into the vents.
Troubleshooting If problems occur, the first step should be to verify that the PA 2-250 is set to the proper line voltage for your AC power source and that your power source is operating correctly.
Sherbourn Technologies, LLC Five Year Limited Warranty What does this warranty cover? Sherbourn Technologies, LLC (“Sherbourn”) warrants its products against defects in materials and workmanship. How long does this coverage last? This warranty commences on the date of retail purchase by the original retail purchaser and runs for a period of five years thereafter. This warranty is transferrable to any person that owns the warranted product during the Term.
How do you get service? In order to make a claim under the warranty, you must: 1. Call a customer service representative (“CSR”) of Sherbourn at (615) 791-4046. Provide the CSR with a description of your problem and the serial number of the product for which the warranty claim is being made. 2. The CSR will provide you with a returned material authorization number (“RMA”). 3. Ship the product to Sherbourn at the following address, with the RMA number clearly visible.
