Protect the amp from mechanical knocks (tubes!)
Let the amp cool down before you transport it (app.10 minutes).
Tubes need about 20 seconds to warm up after you switch the power on
Avoid storing the amp in damp or dusty rooms, they are hard on jacks, switches
and potentiometers.
Ensure air can circulate at the rear and both sides of the amp to allow for
adequate cooling (increases component life).
Never operate the amp without an adequate load
Replace tubes with select replacement tubes (special selection criteria)
to avoid microfonic properties, undesireable noise and unbalanced performance
Handling and Care
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This circuit ensures the amplifier does not shut down completely when a
single power tube failes. You can continue to play,but the affected
channel's output power is reduced by 2/3rds (depending on the type of
defect, in the 830.30 the power of the affected channel will nearly be 0).
Gas developing in the power tubes can cause a momentary short circuit.
The fuse activates, but the amp is not shut down! Often the tube absorbs
the developed gas,and is operable after a short circuit. Usually the
problem can be rectified by replacing the fuse,but if the new fuse activates
as well,the defective power tube needs to be replaced.
E C S (Emergency Circuit System)
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We r e s e r v e t h e r i g h t t o m a k e u n a n n o u n c e d t e c h n i c a l u p g r a d e s !
Attention! Please read the following!
This Amp is in a position, to produce high volume levels. Exposure to
high volume levels may cause hearing damage!
Leave tube replacement and power amp biasing to a qualified
professional. Ensure the unit is switched off and unpluged!
Caution -tubes can get very hot and cause skin burns.
Always use high-quality cables.
Never operate the amp through an ungrounded outlet!
Never bridge a defective fuse and ensure replacement fuses feature identical
ratings!
Pull the AC mains plug before replacing fuses!
Never open the chassis or attempt repairs on your own. Consult qualified
service personnel!
Never expose the amplifier to extreme humidity or dampness!
Please read the instructions carefully before operating the unit!
