Jas-Audio BRAVO 1.1 LE PRE-AMP - Manual (Page 5)

Page 5 of 9
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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 12AX7, 12AT7, a n d 5Z4P tubes will work fine in the JAS Bravo 1.1
LE Pre-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.
Unpacking before installation
All shipping containers have been specially designed to protect their contents and special
care has been taken to prevent damage under normal shipping conditions. Mishandling
should be evident upon inspection of the shipping container. If shipping damage is found
after visual inspection, take care not to destroy the evidence. If necessary, document the
damage with photographs and contact the carrier immediately.
Caution: On reception, carefully remove your new Bravo 1.1 LE and the power supply
from the packing carton and examine them closely for signs of shipping damage. It is
recommended to save all original packing cartons and crates to protect your amplifier
from damage should you wish to store it or ship it for after-sales service.
Installation and Set up
Four sets of RCA female input plugs for reception of signals from sources and two sets of
RCA female plugs for signal output to power amplifier are provided at rear of the chassis.
Connect the signal cables according to the indications and configuration. Attach one end
of the power connecting cable to the main box by twisting the ring on the male plug to
lock until secured. Please make sure all signal cables, power connecting cable and the
power supply cable are properly connected. Set the Gain Control Knob at 0dB or 3dB
according to personal preference before pressing the power button on the power supply
box. Signal input is selectable by turning the Selector on the front acrylic panel.