B
LOCK
D
IAGRAM
F
RONT AND
R
EAR
P
ANEL
6 3
INPUTS
- Connect your instrument to one
of these inputs,
active
or
passive
. Use the
active input for instruments with high out-
put and the passive one for instruments with
low output. If both inputs are connected
only the passive input will work.
___________________________________
VOLUME
- This knob controls the volume
of unit, for the exception of the balanced
output (XLR) which is not effected by the
this setting.
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BASS
and TREBLE
- These two controls
the tone stack of the ClassicT90. The design
is purely passive, yet it is designed as a
boost/cut filter for best performance. No
feedback is present here, and this filter is
driven by a class A driving stage. See next
page for filter characteristics graph.
___________________________________
PRESENCE
- Controls the high frequency
response over the poweramp feedback cir-
cuitry. Very useful for defining the "edge"
or "attack" of a sound. Note that this control
does not effect the balanced output..
___________________________________
STANDBY
– This switch mutes the amp by
disconnecting the high voltage from the
tubes. The associated lamp indicated when
the amp is operable. When powering up,
allow the to amp warm up for a period of 5
minutes prior of activating with standby.
___________________________________
POWER
– Powers the amp on or off.
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BALANCED OUTPUT
- Is a high qual-
ity balanced output that functions as a line
box for connecting to PA mixing consoles
or to studio or broadcast recording units.
Lifting ground is a great aid in many
occasions. When required, set the
GND
switch to OFF position to disconnect the
ground from the output.
This balanced output is a direct driven
tube output for best possible performance.
__________________________________
AC INLET -
Connects the amp to the
mains. This inlet also houses the mains
fuse.
__________________________________
SPEAKER OUTPUTS
– The two
Speakon® connectors allow you to
connect the amp to your favorite cabinets.
IMPORTANT:
Use only
ONE
speaker output and the one that is
matching the
TOTAL
speaker
impedance.
,
EBS will not take responsibility for
eventual hearing damages caused by
the powerful ClassicT90.
__________________________________