PA 2-50 TWOOCHANNEL FLEX AMPLIFIER Owner’s Manual
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 2-50 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 2-50 with a fuse(s) of proper value and voltage rating. The PA 2-50 should only be cleaned as directed in the Installation and Operation Manual. Avoid spraying liquids directly onto the PA 2-50 and NEVER spray liquids into the vents. Care should be taken so that small objects do not fall into the inside of the PA 2-50.
PA 2-50 Two-Channel Flex Amplifier Contents Important Safety Precautions and Explanation of Symbols Introduction..................................................................................................2 The PA 2-50 Two-Channel Flex Amplifier....................................................2 About This Manual.......................................................................................2 Mechanical and Environmental...................................................................
Introduction Thank you for choosing the Sherbourn PA 2-50 Two-Channel Flex Amplifier. The Sherbourn PA 2-50 combines two great sounding audio channels, a precision digitally controlled analog volume control, automatic input selection, flexible remote control and triggering options, and user-selectable AC supply voltage - all in one compact package.
Mechanical and Environmental SIDE TOP 14.5” SHERBOURN PA 2-50 14” 8.5” FRONT 2.625” 3.125” UFP x1 (single rack mount kit) 3.5” 2.375” 8.625” 15” 19” UFP x2 (dual rack mount kit) 3.5” 15” 17” 19” Page 3 2.
Dimensions: 8.5” wide x 3.125” high x 14.5” deep (includes feet, binding posts, no rack kit). Weight: 11.2 lbs / 5.1 kg (unboxed); 14.4 lbs / 6.6 kg (boxed). Rack mountable: Yes, single or paired, with optional rack mount kits. Power requirements: 115 VAC or 230 VAC +/- 10% @ 50 / 60 Hz (selectable by rear-panel switch). Ventilation and cooling: To avoid overheating, be sure to provide adequate clearance and ventilation.
Front Panel 1 2 3 STANDBY 4 1------------AUTO ------------2 5 6 DN----------VOLUME ----------UP 1. Standby Button Switches (toggles) the unit between Standby and On. 2. Standby LED Illuminates red for Standby; blue for On, flashing red for a Fault condition. 3. Infrared Detector Window Used by the infrared remote control. 4.
Rear Panel 4 5 6 POWER 1 2 3 L R INPUT 1 INPUT 2 OUTPUT + LEFT - + - + RIGHT - + LEFT - RIGHT SPEAKER OUTPUTS ON OFF 115 ON AC INPUT OFF RS-232 CONTROL 7 TRIGGER IN IR IN 8 9 AUTO 10 11 1, 2. Inputs (one stereo pair for each input; unbalanced) Connect your line level inputs to these. 3. Outputs (one stereo pair; unbalanced) Stereo passthrough output carries the selected input signal for chaining other devices. 4.
9. IR Input. Connect an external IR sensor to this input if the PA 2-50 is mounted such that IR remote control signals cannot reach the front panel directly. 10. Power Mode Switch. Selects between regular, triggered, and auto-on power modes. Refer to the Installation Tips and Configuration sections for details. 11. Standard IEC Power Inlet. The PA 2-50 requires a standard IEC C7/C8 (2.5A two wire) power cable.
Inputs and Outputs Analog inputs: 2 inputs; each one stereo pair of unbalanced (RCA) inputs. Analog (line level) outputs: 1 output; one stereo pair of unbalanced (RCA) outputs . Input sensitivity (for full output into 8 ohms): 600 mV Speaker outputs: 2 pairs of two-terminal Phoenix-type connectors (2 each; Left Speaker and Right Speaker).
Installation Tips Input Switching The Sherbourn PA 2-50 has two separate stereo inputs. Explicitly choosing either Input 1 or Input 2 (by either the front panel buttons, the IR remote, or the RS-232 remote) selects that input as the signal source; choosing Auto as the signal source instructs the PA 2-50 to use whichever input signal is active; if Auto is selected, Input 1 has priority over Input 2 if both inputs are receiving signal.
IR Remote Control Input If the PA 2-50 is installed in a location where the front panel IR remote window is blocked, an external IR receiver may be connected to the IR In connector on the rear panel. Rack Mounting Options The Sherbourn PA 2-50 may be rack mounted using the Sherbourn UFPx1 rack mount kit. Two PA 2-50 units may be mounted side by side in a 19” rack using the Sherbourn UFPx2 rack mount kit.
Configuration Operating Voltage - Verify that the Sherbourn PA 2-50 is configured for the correct operating voltage for your area. (Voltage is set via the AC Input switch on the rear panel of the PA 2-50). Power Mode - The way in which the PA 2-50 responds to the Trigger Input, audio signals, and the front panel Standby switch is determined by the setting of the Power Mode switch (the small bat switch on the rear panel below the speaker outputs, to the right of the Trigger and IR Inputs).
Remote Control Codes and Signal Specifications RS-232-Serial Codes The Sherbourn PA 2-50 responds to serial codes in standard text format.
Sherbourn PA 2-50 IR Remote Control Codes (in “NEC Pronto” format) ON= 0000 006D 0022 0002 0157 00AB 0016 0040 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0040 0016 0040 0016 0015 0016 0040 0016 0040 0016 0040 0016 0040 0016 0040 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0015 0016 0040 0016 0040 0016 0040 0016 0040 0016 0040 0016 0040 0016 0040 0016 05E7 0157 0055 0016 0E3B OFF= 0000 006D 0022 0002 0157 00AB 0016 0040 0016 0015 0016 0
Performance Specifications Analog inputs: 2 inputs; each one stereo pair of unbalanced (RCA) inputs. Analog (line level) outputs: 1 output; one stereo pair of unbalanced (RCA) outputs. Input sensitivity (for full output): 600 mV Auto switch response time: (On from Standby or switch to priority input on sense); < 10 seconds. Speaker outputs: 2 pairs of two-terminal Phoenix-type connectors (2 each; Left Speaker and Right Speaker).
Features The Sherbourn PA 2-50 Two-Channel Flex 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 Sherbourn PA 2-50 is controlled by the Power rocker switch located on the rear panel above the power cable. When the AC mains power is Off, the PA 2-50 will not respond to any command (but it will remember Volume and Input settings.) Once the AC power is turned on, the PA 2-50 will remain in Standby mode until: • the Standby push button on the front panel is pressed. • the Trigger Input is asserted (if the Power Mode switch is in Trigger mode).
Mute Control The PA 2-50 has a Mute function that can be accessed via IR or serial RS-232 remote control. When accessed from the IR remote, pressing the Mute button toggles the Mute function. When accessed via the RS-232 serial control, the Mute may be toggled or explicitly turned On of Off. Resetting a fault If the PA 2-50 experiences a short of other fault, the PA 2-50 will return to Standby mode and the Standby LED will flash red.
Periodic Maintenance The Sherbourn PA 2-50 requires no periodic maintenance. Cleaning the Sherbourn PA 2-50 • • If necessary, the Sherbourn PA 2-50 should be cleaned gently with a soft rag. If something sticky gets on the front panel or case of the PA 2-50, 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.
Troubleshooting If problems occur, the first step should be to verify that the Sherbourn 2-50 is set to the proper line voltage for your AC power source, and that your power source is operating correctly. Problem: No sound is heard from either channel (the Standby LED is not lit). Reason: You have no AC power. • Verify that the circuit is live and the rear panel Power switch is On. • Verify that the line cord on the PA 2-50 is fully inserted and is tight.
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.
