Passion PAK-i12 Manuel D'utilisation page 6

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PAK-i12-02 Manuel d'utilisation/ Users Guide 7
TUBE INSTALLATION: (see figures on page 4)
Make sure your equipment is disconnected before installing or removing the tubes.
The tubes supplied with your equipment have been selected to provide an identical gain and make a
"matched" quad. If you replace your tubes eventually by "matched" pair, it's very important that their
individual position be respected. The pairs are as follows :
VB6 with VB8 (12AU7/ECC82)
VB7 with VB9 (12AU7/ECC82)
VB5 single (12AU7/ECC82)
VB1 with VB2 (6550)
vB2
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o N ve
VB3 with VB4 (6550)
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Ие:
TUBES MATCHED BY PAIR
WARNING:
Power tubes can easily be damaged upon installation in their sockets or even removal. Carefully line
up and point each tube into its "octal" socket ( 6550 tube, 8 pins) and hold it firmly by its base if
possible. Press delicately with a light back and forth movement until the tube rests firmly on its
base. Use same care when removing the tubes.
Small (9 pins 12AU7) tube: Respect wider gap between pins 1 and 9, line up and point correctly
into socket.
Avoid leaving finger traces on tubes; wear clean gloves or wipe off each tube with a dry, clean cloth
after handling it.
To extend the life of the tubes:
Your tubes will last longer if you avoid leaving them in operation when they are not performing. For
а good performance, allow 1/2 hour to 1 hour warming up.
Very important: Never power a tube amplifier without its speakers, unless there is absolutely no
audio signal (volume off).
Breaking in:
Tubes require a breaking in period. They will achieve a more pleasant musical performance after the
first 100 hours of use.