Sherbourn PA 2-250 User Manual Download

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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. If this equipment does cause harmful interference to radio or television

reception, which can be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference using one or more of the following measures:
1. Reorient or relocate the receiving antenna.

2. Increase the separation distance between the equipment and receiver.

3. Connect the equipment into an outlet on a circuit different from that of the receiver.

4. Consult the dealer or an experienced radio/TV technician for help.
For questions regarding service, please contact:
Sherbourn Technologies, Inc.

131 SE Parkway Court

Franklin, Tennessee

37064
Tel: (615) 791-4046

Fax: (615) 791-6287

Web: www.sherbourn.com

Summary of Contents for PA 2-250

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Page 3: ... WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THE COVER FROM THE PA 2 250 THERE ARE NO USER SERVICEABLE PARTS INSIDE THE PA 2 250 REFER ALL SERVICE TO QUALIFIED SERVICE PERSONNEL WARNING DANGEROUS VOLTAGES MAY BE PRESENT AT THE SPEAKER OUTPUT TERMINALS OF HIGH POWERED AMPLIFIERS TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT TOUCH UNINSULATED AREAS OF TERMINALS OR SPEAKER WIRES UNLESS T...

Page 4: ...r a long period of time Only replace any fuses in the PA 2 250 with fuses of proper value type and voltage rating The PA 2 250 should only be cleaned as directed in the Installation and Operation Manual Avoid spraying liquids directly onto the PA 2 250 and never spray liquids into the vents Care should be taken so that small objects do not fall inside of the PA 2 250 You should seek service for yo...

Page 5: ...equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference using one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation distance between the equipment and receiver 3 Connect the equipment into an outlet on a circ...

Page 6: ...e PA 2 250 2 About this manual 2 Mechanical and environmental 3 Inputs and outputs 4 Installation tips 5 Configuration 6 Performance specifications 7 Features 8 Operation 9 Periodic maintenance 10 Troubleshooting 11 10 year Limited Warranty 12 Notes 13 PA 2 250 STEREO POWER AMPLIFIER ...

Page 7: ... instructions on how to perform common operations You may wish to record serial numbers or other purchase information on the Notes page at the back of this manual The PA 2 250 The PA 2 250 delivers 300 watts channel into 8 ohms and over 500 watts channel into 4 ohms with very low noise and vanishingly low distortion and is ruler flat over the audio band A massive toroidal power supply and discrete...

Page 8: ...g 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 Ventilation and cooling To avoid overheating be sure to provide adequate clearance and ventilation both above and below 17 19 19 18 5 125 TOP FRONT SIDE 1 16 6 RACK HANDLES SHERBOURN PA 2 250 PA 2 250 ...

Page 9: ...Front panel controls and indicators On Off large push button toggles Standby mode On Off LED 1 red indicates Standby mode blue indicates normal operation flashing red indicates a fault Protect Channel Status LEDs 2 blue indicates normal operation flashing red indicates a fault may be disabled by rear panel Status LED switch Rear panel controls and indicators Power rocker switch switches mains powe...

Page 10: ...allations The C 12 offers a variety of air flow options including external ducting includes professional features like triggered operation and thermostatic control and takes up only 2U of rack space AC power source The PA 2 250 uses an IEC C17 C18 type power cord and requires an appropriate matching AC outlet Connections Ensure that the amplifier is powered Off when connecting and disconnecting sp...

Page 11: ... 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 Note When the Status LEDs switch is set to Off the two channel Status LEDs will be Off and the front panel On Off LED w...

Page 12: ...nel into 8 ohms Frequency response 20 Hz to 20 kHz 0 05 dB at 1 watt 0 6 dB at 50 kHz 1 0 dB at 80 kHz Trigger and control Trigger Input 5 20 V AC or DC Trigger Output 12 V DC 10 mA max Protection The PA 2 250 is protected against excessive operating temperature shorted speaker connections ground faults and other common fault conditions If a fault occurs the PA 2 250 will automatically power down ...

Page 13: ...quality components used throughout Independent balanced XLR and unbalanced RCA inputs for each channel Full sized five way binding posts for speaker connection Audiophile grade gold plated machined RCA connectors Trigger input and output Switchable front panel status indicators Channel Status LEDs are disabled power LED dims Intelligent protection from electrical faults Intelligent protection from...

Page 14: ...until the trigger is no longer asserted If the trigger signal is already active when mains power is applied the PA 2 250 will switch On as soon as it completes self test and will switch to Standby when the trigger is no longer asserted If the front panel On Off switch is pressed while the PA 2 250 is On after being switched on by an asserted trigger the On Off switch will override the trigger and ...

Page 15: ... 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 ...

Page 16: ...ing a fault Verify that the input configuration for that channel is correct Check your source and your input cabling Check your speakers and speaker connections Problem No sound is heard from one or both channels the On Off LED and one or both Channel Status LEDs are flashing red The PA 2 250 is indicating a fault on one or both channels the flashing Channel Status LEDs correspond to the channels ...

Page 17: ...ITED TO THE TERM OF THIS LIMITED WARRANTY SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU A claim under this warranty must be made by you within the Term A claim shall not be valid and Sherbourn has no obligation related to the claim if it is not made within the Term and if it is not made in strict compliance with the requirem...

Page 18: ... Parcels arriving without a RMA number on the outside of the box will be refused Sherbourn Technologies LLC Attn Repair Department 135 Southeast Parkway Court Franklin TN 37064 How does state law apply This warranty gives you specific legal rights and you may also have other rights which vary from state to state CERTAIN STATES HAVE ENACTED LAWS WHICH PRECLUDE THE WAIVER OF CONSEQUENTIAL AND INCIDE...

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