SPST for short). This type of footswitch lets you access the two channels and Gain Boost
off/on. One of the two switches activates
or
; the other engages
. Plugging a footswitch into this jack disables onboard channel (15)
switching and
(14).
Note also: A footswitch may be equipped with LEDs indicating the given switching
status. Each of the two switches is provided with approx. 10 milliamperes current,
which suffices to power a standard LED. The jack's mono terminal selects Channel 1 or
Channel 2, while the stereo terminal controls the Gain Boost feature (for pin
assignments, see page 22).
A fuse in the rear chamber of this fuse drawer protects the V8 (Retro Tube 50: V6)
power tube. It is designed to blow in the event of an electrical problem with tube V8
(Retro Tube 50: V6). The Power Tube Fuse LED (28) lights up to indicate that one or
several of the four fuses has blown. There is a replacement fuse in the front chamber of
the fuse drawer.
Always make sure replacement fuses are of the same type and
have the same ratings as the original fuse! See section 28 for some more key facts
about tube defects.
A fuse in the rear chamber of this fuse drawer protects the V7 (Retro Tube 100) power
tube. It is designed to blow in the event of an electrical problem with tube V7 (Retro
Tube 100). The Power Tube Fuse LED (28) lights up to indicate that one or several of
the four fuses has blown. There is a replacement fuse in the front chamber of the fuse
drawer.
Always make sure replacement fuses are of the same type and
have the same ratings as the original fuse! See section 28 for some more key facts
about tube defects.
Master B volume knob. Located post FX Loop, it gives you an alternative to the Master
A knob (16). In another words, you can set a different power amp output level and
then activate this Master B volume via footswitch. If you wish to switch between
Master A and Master B, you have to connect an ENGL Z-9 Custom Foot Controller to
the S.A.C. Port (21) or footswitch such as the ENGL to jack no. 23. Two options for
controlling Master A/B via the Z-9 are described on page 10. You'll find tips on how to
make the most of Master A/B switching in section 16 on page 9 & 10.
This LED lights up to indicate one of the fuses in the fuse drawer (see the descriptions
under 25, 26, 33, 34) has blown to protect the power tubes.
Channel 1
Channel 2
Gain Boost
Gain Boost
25 Power Tube V8 Fuse (Retro Tube 50 Amp - E762: Power Tube V6 Fuse )
CAUTION: Switching off the amp and pull the mains plug before opening the fuse
drawer!
Need-to-know info:
26 Power Tube V7 Fuse (Retro Tube 100 Amp - E765)
CAUTION: Switching off the amp and pull the mains plug before opening the fuse
drawer!
Need-to-know info:
28 Power Tube Fuse LED
27 Master B
13
