C.E.C. TUBE53 Owner's Manual - page 15
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• 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 children.
• Install this amplifier with plenty of surrounding space, so as to allow heat generated by
the TUBE53 to dissipate into the surrounding air.
• Do not place any other devices on the TUBE53, or block the air vents in the top cover.
Ensure that there is plenty of space between the TUBE53 and other devices and/or
walls.
• If you wish to install the TUBE53 in an audio rack, ensure that there is at least 15cm of
clearance above the unit’s top cover. It is recommended that you install the TUBE53 on
an audio rack or board of sufficient mass, so as to prevent vibrations from reaching the
unit and draw out the TUBE53’s full potential.
• Avoid installing the TUBE53 in a dusty environment, as the accumulation of dust at the
base of the vacuum tubes may cause excessive heat, shorting and fire.
• The TUBE53 must be handled with care as it operates at high voltage. Do not open the
bottom cover of the unit. CEC cannot be held responsible for any injuries or burns suf-
fered as a result of opening the TUBE53’s top, side and bottom panels, and/or coming
into contact with the TUBE53’s internal components.
• To avoid causing cracks in the side panels, which are made of semi-tempered glass, do
not hit the panels with sharp and/or hard objects, or apply excessive pressure to the pan-
els. Pay particular attention not to screw the top cover back on too tightly or unevenly
when replacing vacuum tubes.
• Turn the TUBE53 off when connecting and disconnecting cables to avoid electrical
surges that may cause damage to the vacuum tubes and speakers.
• Never cause a short circuit between the (+) and (-) speaker output terminals. This may
damage the TUBE53.