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Owner's Manual
AV25-2 User Manual
1 Important safety instructions
1. Please read carefully prior to product installation or operation.
2. Read these instructions.
3. Keep these instructions.
4. Heed all warnings.
5. Follow all instructions.
6. Do not use this apparatus near water.
7. Clean only with dry cloth.
8. Do not block any ventilation openings. Install in accordance with manufacturer's instructions.
9. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
10. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has
two blades with one wider than the other. A grounding type plug has two blades and a third
grounding prong. The wide blade and/or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete
outlet.
11. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point they exit from the apparatus.
12. Only use attachments/accessories specified by the manufacturer.
13. Use only with the cart, stand, tripod, bracket, or table provided by the manufacturer, or sold with
the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to
avoid injury from tip-over.
14. Unplug this apparatus during lightning storms or when unused for long periods of time.
15. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has
been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled
or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture,
does not operate properly, or has been dropped.
AV25-2 User Manual Rev A
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Summary of Contents for Stewart Audio AV25-2
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Page 1: Important Safety Instructions
AV25-2 User Manual Rev A Page 1 Table of Contents... -
Page 2: Approvals
External wiring connected to the speaker terminals shall be installed by a qualified person. Do not connect or disconnect speaker AV25-2 User Manual Rev A Page 2 Table of Contents... -
Page 3: Radio Interference
3.3.5 Maintenance Clean regularly with a soft cloth to remove dust and debris. Also check that there is adequate ventilation for convection cooling. AV25-2 User Manual Rev A Page 3 Table of Contents... -
Page 4: Table Of Contents
Warranty Information ............................11 Warranty Summary ........................11 Eligibility Requirements ......................11 Non-warranty Repairs ......................... 11 10 Return Procedure ............................... 12 10.1 Shipment Instructions ......................... 12 10.2 Packaging Instructions ........................ 12 AV25-2 User Manual Rev A Page 4 Table of Contents... -
Page 5: Welcome
5.1 Features The AV25-2 audio amplifier offers 2 channels of clean, full-range, dynamic audio with 25W output power per channel in a sub-compact ¼ rack enclosure. It has been optimized for 4Ω and 8Ω... -
Page 6: Universal Mount Installation
5.3.4 Operating Voltage The AV25-2 is shipped with an in-line power supply. This is a universal power supply that operates on AC mains from 100-240V at 50 or 60 Hz. The 48VDC output from this supply is connected to the rear of the amplifier. -
Page 7: Rear Panel
6.1 Operation 6.1.1 Input Connections Your AV25-2 amplifier is provided with a 3-pin Phoenix connector for each input. This connector will accept balanced or unbalanced connections, however some modifications must be made for an unbalanced connection. See the next two sections for instructions on connecting your amplifier to its input source. -
Page 8: Speaker Connections
6.1.2 Speaker Connections Stewart Audio recommends using high-quality, heavy-gauge speaker wire and connectors to send the output signal of your amplifier to the speakers. Use the following table as a guideline when selecting your wire gauge. - Page 9 CAUTION: Do not connect either speaker terminal to ground. This will cause a short circuit which may damage the amplifier, speaker, or both. Similarly, do not connect any speaker terminal to ground. AV25-2 User Manual Rev A Page 9 Table of Contents...
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Page 10: Specifications
Check that level controls are not turned down. Check that input and output connections are secure. Ensure signal present LED is illuminated to denote a signal. If there is no signal detected check signal source and that level controls are set high enough. AV25-2 User Manual Rev A Page 10 Table of Contents... -
Page 11: Warranty Information
9 Warranty Information 9.1 Warranty Summary All Stewart Audio amplifiers and accessories, unless excluded in this summary, are covered by a 3- year limited warranty on parts and labor from the data of purchase. In order to be eligible for warranty repairs, the amplifiers and accessories must have been purchased through an authorized Stewart Audio dealer and submitted by the original purchaser. -
Page 12: Return Procedure
NOTE: Any defective products received without an RA number will be returned to sender at their expense. If Stewart Audio is unable to contact the sender in 14 days, the merchandise will be considered scrap and may be disposed of. - Page 13 5. Securely seal the package with an adequate carton sealing tape. 6. Do not use light boxes or “peanuts”. NOTE: Damage caused by poor packaging will not be covered under warranty. AV25-2 User Manual Rev A Page 13 Table of Contents...
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