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 a risk of electrical shock to the user.
The power cable for the PA 7-350 should be unplugged from the outlet during severe electrical storms, or when unused for a long period of time. Only replace the fuse in the PA 7-350 with a fuse of proper value and voltage rating. ! WARNING: Under some operating conditions, the PA 7-350 may cause a fuse or circuit breaker in your breaker panel to open, which indicates that the PA 7-350 is attempting to draw more current than your circuit can safely supply.
PA 7-350 Seven-Channel Power Amplifier Contents Important Safety Precautions and Explanation of Symbols Introduction..................................................................................................2 The PA 7-350...............................................................................................2 About This Manual.......................................................................................2 Mechanical and Environmental....................................................
Introduction Thank you for choosing the PA 7-350 Seven-Channel Power Amplifier. The PA 7-350 combines the superb sound quality necessary to satisfy the most discerning audiophile with a virtually limitless store of power and the flexibility and reliability demanded by professional installers. Thanks to Sherbourn’s Soft Switch™ Class H technology, the PA 7-350 is very efficient, which minimizes both power requirements and waste heat.
Mechanical and Environmental RACK HANDLE / BRACKETS TOP SIDE SHERBOURN PA 7-350 18” 5/16” 20.5” 19” 17” 19” FRONT 8.75” 9.5” Dimensions: 17” wide x 9.5” high x 19” deep (includes feet, binding posts, no rack ears) Weight: 98.8 lbs / 44.8 kg (unboxed); 112.
Inputs and Outputs Analog inputs (each channel): Independent balanced (XLR) and unbalanced (RCA) input; switch selectable Input sensitivity (for full output into 8 ohms): 1V Speaker outputs (each channel): 5-way binding posts (gold-plated with clear acrylic); two sets per channel to facilitate bi-wiring Minimum recommended load impedance: 4 ohms (one 4 ohm load or two paralleled 8 ohm loads per channel) Trigger and control: Trigger input (mono 1/8”), trigger output (mono 1/8”) Front panel controls a
Installation Tips Inputs and outputs Balanced (XLR) audio interconnects usually provide better noise immunity, and are preferable especially for long cable runs or in noisy environments. Be sure to select the correct input for each channel using the appropriate rear panel switches. Rack mounting The PA 7-350 is VERY heavy. Only place the PA 7-350 on racks, stands, or shelves rated to support at least 150 pounds.
Configuration • • • Verify that the PA 7-350 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 7-350). Verify that all rear panel Input Selector switches are set correctly for each input. Verify that the rear panel Channel Status switch is set to On if you want the front panel status LEDs to be active. Note: Only one input (balanced OR unbalanced) on each channel is active at once.
Performance Specifications Analog inputs (each channel): Independent balanced (XLR) and unbalanced (RCA) input; switch selectable Input sensitivity (for full output): 1 V (8 ohm load) Speaker outputs (each channel): 5-way binding posts (gold-plated with clear acrylic); two sets per channel (to facilitate bi-wiring) Minimum recommended load impedance: 4 ohms (which equals one 4 ohm load or two paralleled 8 ohm loads per channel) Real World power In the real world (unlike in a lab), a home theater ampli
Features The PA 7-350 Seven-Channel Power Amplifier combines the latest cutting edge technology with 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 7-350 is controlled by the Power rocker switch located on the rear panel above the power cable. Once the AC power is turned on, the PA 7-350 will remain in Standby mode until the Standby / Power push button on the front panel is pressed, or the Trigger input is activated. Operating the PA 7-350 When the AC power switch is On, the PA 7-350 will remain in Standby mode until activated.
Periodic Maintenance The PA 7-350 requires no periodic maintenance. Cleaning the PA 7-350 • • If necessary, the PA 7-350 should be cleaned gently with a soft rag. If something sticky gets on the front panel or case of the PA 7-350, 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 7-350 or into the vents.
Troubleshooting If problems occur, the first step should be to verify that the PA 7-350 is set to the proper line voltage for your AC power source, and that your power source is operating correctly and is of sufficient capacity to power the PA 7-350.
Sherbourn Technologies, LLC Ten-Year Limited Warranty What does this warranty cover? Sherbourn Technologies, LLC (“Sherbourn”) warrants its products against defects in materials and workmanship. This warranty is subject to revision at any time.
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY. 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 (1-877-366-8324). 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.
