Instrukcja obsługi Artemis LA-1

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Artemis Labs LA-1
Operating Manual

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Important Safety Instructions 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instruc- tions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other appa- ratus (including amplifiers). 9. Do not defeat the safety purpose of the ground

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INTRODUCTION & SPECIFICATIONS The Artemis Labs LA-1 Line Amplifier combines the clean, accurate sound of a purist single-triode line amplifier with the convenience and reliability of a solid, well-built product. Special care is taken with all parts in the audio path, from the Goldpoint™ stepped attenuator to the Swedish output chokes by Lundahl. All aspects of the design were done by John Atwood of One Electron™. The LA-1 is conservatively designed and is built to last for many years. The on

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FRONT PANEL Input Attenuator Mono Power Indicator Indicator Mono Switch Power Switch Input Left Balance Right Balance Selector The Power Switch applies power when flipped up. The Power Indicator will glow red while the tubes warm up, then after approximately 40 seconds, will glow green. About 4 second after that a faint click will be heard, indicating the muting relay turning off. The LA-1 is now ready for use. If the power is removed, even briefly, then restored, the warm-up time delay pro

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REAR PANEL Voltage Rating Fuse IEC Power Ground Connector Terminal Right Inputs Right Outputs Left Inputs Left Outputs Outputs 1 and 2 Inputs 1 through 5 Make sure that the Voltage Rating of your LA-1 matches the power mains voltage at your loca- tion. The voltage can be changed by internal rewiring, which can be done by Artemis Labs or by a qualified technician. The Fuse is a 1" x 1¼" “3AG” Slow-blow type. Its value is given on the Voltage Rating sticker. A power cord is supplied with eac

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TUBES The LA-1 uses Cool-Swap™ technology to let the tubes run cooler and provide a built-in spare. Many dual triodes, including the 5687, have A B split heaters, allowing them to run from either 6.3V or 12.6V. This heater set-up allows only one of the two triodes to be heated. In the Cool-swap configuration, one tube is used No No for each channel, each with one half heated. Connection Connection The right channel uses triode #1 and the left 6 Volts 6 Volts channel uses triode #2. Si

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TECHNICAL FEATURES +160V +250V Power Right Lundahl Inputs Input 500H Selector Power Supply choke 5 Right (unregulated) Outputs V1 1 1/2 5687 Features: 4 1 - Electrostatically- Right 2 Line voltages Volume Balance shielded transformer available: 3 - High-speed rectifiers 100V, 3 2 - High-temperature 110V, (105°C) electrolytics 120V, 2 5 0 K s t e p p e d 100K 220V, a t t e n . lin 230V, 1 240V 50 or 60Hz V1 V2 5 5 +160V 8 8 4 4 Mono Left +6V Inputs Lundahl 500H choke 5 Left Outputs Artemis Labs

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the LA-1 can drive loads as low as 8K while still is hot enough to build-up a protective space charge meeting specifications. This is important when around the cathode.) This helps extend tube life. A driving certain solid-state amplifiers or pro audio muting relay shorts the audio outputs until about equipment which can have input impedances as low 4 seconds after the high voltage is applied. This as 10 or 15K ohms. allows start-up transients to die away. High-Quality Conductive-Plastic B