Summary of TUBE53
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2 • introduction ……………………………………………………………………… 2 • important safety instructions …………………………………………………… 3 • handling precautions …………………………………………………………… 6 • accessories ……………………………………………………………………… 8 • front panel functions …………………………………………………………… 9 • rear panel functions ……………………………………………………………10 •vacuu...
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3 the lightning flash with an arrowhead symbol, within an equi- lateral triang...
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4 9) (for usa, canada: ) do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades, with one blade wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If...
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5 • do not expose the tube53 to drips or splashes. • do not place any objects filled with liquids, such as vases, on the tube53. • do not install the tube53 in a confined space, such as within a book case or similar piece of furniture. • plug the ac power cord into an easily accessible ac wall outlet,...
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6 1. Before connecting or disconnecting other devices, unplug the tube53’s ac power cord from the outlet. 2. To avoid noise from your speakers, turn your system components on or off in the following order: power on: turn on other devices connected to the tube53’s inputs first, before turning the tube...
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7 6. Condensation when the tube53 is brought into a warm room when the exterior tempera- ture is cold, or when the room temperature rises sharply from using a heater, condensation may form both inside and outside the tube53, hampering its performance. If this happens, leave the tube53 unused in the ...
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8 取 扱 説 明 書 c g 6 l 6 3 5 e b u t the packaging for the tube53 should contain the following: 1. Tube53 unit 2. Ac power cord 3. Owner’s manual note: keep the ca...
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9 power press the power button to turn the tube53 on. The led above the button will light up. Note: it takes 2 to 3 minutes for the tube53 to stabilize once its power is on. To turn the unit off, move the volume knob to the minimum and press the pow- er button again. Selector turn the selector knob ...
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10 ac line connect the supplied ac power cord to the ac line inlet. Right input/left input line in audio signal input jacks equipped with unbalanced rca connectors. Use in- terconnect rca cables to connect inputs 1 / 2 / 3 to an external source with an rca line output, such as a cd player, tuner or ...
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11 right output/left output power amplifier output terminals to connect speakers. Banana plugs, spades and wires can be used for the connection. Connect the – speaker cable to the - terminal marked with black color. Connect the + speaker cable to the 8Ω terminal marked with red color for speakers wit...
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12 c g 6 l 6 3 5 e b u t unplug the tube53’s ac power cord from th...
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13 c g 6 l 6 3 5 e b u t pull the broken vacuum tube out, lifting it straight up from the unit. Insert a ...
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14 c g 6 l 6 3 5 e b u t replace the top cover on the unit and fi x the 5 screws gradually, in the order instructed in the diagram below. Caution: do not screw too tightly or unevenly. Extreme or uneven...
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15 • amplifiers produce heat. Prolonged usage will cause heat to accumulate within the aluminum top cover and glass side panels. To avoid burning from residual heat, do not touch the top cover and glass side panels while the tube53 is powered on. Make sure to install the tube53 out of reach of small...
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16 • the tube53 should not require any periodic maintenance, and contains no user serviceable parts except for the vacuum tubes and fuse. If the surface of the tube53 is soiled, wipe with a soft cloth or use diluted neutral cleaning liquid. Be sure to remove any fluid completely. Never use thinner, b...
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17 if you suspect a malfunction in the unit, please check the following chart before calling your dealer. No power check the connection at the both ends of the ac power cord. Make sure there is power at the wall outlet. Replace the fuse at the ac inlet if it is broken. No sound check the connection ...
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18 output power 2 x 20w (8ohm) frequency response 20hz ~ 20khz + / -0db s/n ratio more than 90db thd less than 0.5% (8ohm / 1khz) input terminal 3 x rca input sensitivity 400mv input impedance 100k ohm output terminal 1 (8 ohm or 6 ohm) tube 4 x 12au7, 4 x 6l6gc fuse t6.3al 250v for 120vac or t3.15a...
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