BOGNER AMPLIFICATION
6
Full Power
Speaker Enclosure
Amp Impedance
one 16 ohm cabinet
16 ohm output
one 8 ohm cabinet
8 ohm output
one 4 ohm cabinet
4 ohm output
two 16 ohm cabinets
8 ohm output
two 8 ohm cabinets
4 ohm output
Switching to ½ Power creates an impedance mismatch, use the speaker
output with half the impedance of the cabinet, see below!!
Half Power
Speaker Enclosure
Amp Impedance
one 16 ohm cabinet
8 ohm output
one 8 ohm cabinet
4 ohm output
two 16 ohm cabinets
4 ohm output
j) Foot Controller
5), 4), 33), 37)
To connect the foot controller, align the XLR type plug properly with the foot controller’s connector and
then push the plug in until it snaps and you won’t be able to pull it out. To detach, press the release
button on the plug before pulling on it. The other connector on the cable plugs into the amplifier’s Foot
Switch connector on the back panel. Align the plug properly then push it in; this plug has a barrel nut to
secure the connection, screw clockwise hand tight, do not over tighten!
Each of the 5 functions has a LED which correlates with a LED on the amplifier to tell you visually what is
engaged and what is not.
Keep in mind, like mentioned before, the foot controller overrides the CH.
Select and Pre FX Boost switches on the amplifier. The Post FX loop must be switched to “on” on the
amplifier itself in order for the function to work via the foot controller.
3.
Tubes
60), 61), 62), 63), 64), 65), 66), 67), 68), 70), 71), 72)
Your 45W Goldfinger comes with JJ 6V6 power tubes.
The Goldfinger has a set of
bias adjust trim pots
with the according test points. These are set by the
factory and
should not be touched
as they can make your power tubes run hot resulting to short out and
fail! If you need to retube the power amp have a knowledgeable Technician set the bias correctly.
With the exception of V4 all pre amp tubes are 12AX7/ECC83. V4 uses a JJ12AT7/ECC81.
While we use the JJ brand others work as well.
The Goldfinger has 5 pre amp tubes:
V1
12AX7 Tungsol -
α
+
Ω
channel > check that one if your amp gets noisy or microphonic.
V2
ECC803S JJ Tesla -
Ω
channel > another candidate for microphonics.
V3
12AX7B Chinese - phase inverter
V4
ECC81 JJ Tesla - Post FX Loop, standard a 12AT7 or ECC81 type
V5
12AX7B Chinese -
α
+
Ω
channel
Tube selection subject to change, Feel Free to experiment using different brands!
