Rear Panel Functions - Marshall Amplification Astoria Dual AST3C Owner's Manual

REAR PANEL FUNCTIONS

ASTORIA DUAL - COMBO
9.
ASTORIA DUAL - HEAD
9.
1. MAINS INPUT
Connect the mains (power) lead to
the MAINS INPUT socket on the
amplifier before plugging into the mains
electricity supply.
Important Note: The MAINS INPUT
socket has an integrated fuse
compartment. Always ensure that the
value of any replacement fuse matches
the labelling on the amplifier rear panel.
Always switch the amplifier off and
disconnect it from the mains electricity
supply before attempting to access the
fuse compartment. If in doubt consult
your Marshall dealer.
8. 7. 6. 5.
8. 7. 6. 5.
2. HT FUSE
The HT FUSE will blow to protect the
internal circuitry if necessary, in the
event of output valve failure. Should you
ever need to replace this fuse, replace
it only with the value shown on the rear
panel. If in doubt, contact your Marshall
Dealer.
Important Note: Before attempting to
change fuses you MUST ALWAYS first
switch the amplifier off and disconnect it
from the mains electricity supply.
REAR PANEL FUNCTIONS (CONT.)
4. 3.
4. 3.
3. LT FUSE
The LT FUSE will blow to protect the
amplifier in the rare occurrence of a
component failure in the switching
circuit. Should you ever need to replace
this fuse, replace it only with the value
shown on the rear panel. If in doubt,
contact your Marshall Dealer.
Important Note: Before attempting to
change fuses you MUST ALWAYS first
switch the amplifier off and disconnect it
from the mains electricity supply.
2. 1.
2. 1.
4. LOUDSPEAKERS
The speaker jack sockets are where the
internal speaker and/or external speaker
cabinet(s) connect to the amplifier.
There are five speaker outputs available.
They are labelled according to the
intended impedances:
• 1 x 16 OHM: connect a single 16 Ohm
speaker cabinet to this jack socket.
• 1 x 8 OHM, 2 x 16 OHM: connect a
single 8 Ohm speaker cabinet or two 16
Ohm cabinets.
Note: The AST3C combo's internal
speaker is 8 Ohm.