Preliminary
Bravo 2.4 features an aluminum alloy panel of 8mm in thickness that holds the on-off knob
on the left, analogue volume control knob in the middle and the selector on the right. Signal
input to four sets of RCA connectors is selectable by turning the selector
It is important to be careful with tube installation. Please do not
force anything, easy does it! This precaution is mentioned to help
you obtain pleasing results and avoid damage! If you have any
trouble replacing or changing tubes, please don’t hesitate to call
your dealer!
___________________________________________________________
Tube Replacement
Caution:
Make sure the amplifier has been unplugged for 30 minutes from the AC mains
before replacing the tubes, to avoid any risk of shock or discomfort from high temperature.
Although tube life span varies depending on the nature and degree of use, under normal
home use, the KT88 output tubes, the 12AT7 driver tubes and the 12AU7 signal
amplification tube should last years in the Bravo 2.4.
Cautionary Terms
When the following cautionary terms are used in this manual, these
definitions apply:
Electrical hazard! Misuse or failure to follow instructions properly
may result in personal injury or death!
CAUTION: No risk of personal injury; however, misuse or failure
to follow instructions may result in damage to equipment.
NOTE: No risk of personal injury or equipment damage; however,
misuse or failure to follow instructions may prevent proper performance
NOS
types of KT88, 12AT7, 12AU7, 5Z3P tubes will work fine in the JAS Bravo 2.4
Amplifier. The amplifier voltage settings will also work fine with all compatible types.
NOTE: LOOK CAREFULLY
at the tube pins and socket and make sure that you
insert the pins correctly. In most cases, replacing tubes presents no problem. The
tube can be made to release by pulling it out gently (sometimes with a little back and forth
wiggling). Nevertheless, it is possible to force the tube pins into the socket the wrong way!
If you install the tube wrongly you will probably damage the amplifier and the tube. This
kind of damage will not be covered by the manufacturer’s warranty. If you have any doubts
at all about this, please call your local dealer for help.
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