14PowerTubeMonitorV3
15PowerTubeMonitorV4
AnimportantnoteonthePowerTubeMonitor(P.T.M.)system:
17DepthPunch
18 LeadGain-3
CAUTION:
This LED lights up when the current flowing through the V3 power amp tube was too
high and the power tube monitor system has switched that tube off.
To learn more about this crucial protection feature,read the paragraph that follows
section 15. See the tube layout chart on page 22 to locate V3's position on the amp
chassis.
This LED lights up when the current flowing through the V4 power amp tube was too
high and the power tube monitor system has switched that tube off.
The next paragraph provides details on this crucial protection feature. See the tube
layout chart on page 22 to locate V4's position on the amp chassis.
The electronic power amp monitoring system constantly gauges the current flowing
through each power amp tube. If it rises to too high a level the system shuts down the
given tube.
This can occur when the amp is operated incorrectly (for example, if the impedance is
wrong due to an incorrect speaker load; see page 18 for permissible loads), at extreme
power spikes, or when a tube is defective.
Reset this electronic monitoring system by switching the standby switch off and on
again. When you press the standby switch to turn the amp on again, the system again
measures the current sent to the tube. If it is still too high, the power amp must be
checked by a service technician, and the tube may have to be replaced if it is defective.
This power amp voicing knob's setting determines the amount of high-end frequencies
This power amp voicing knob's setting determines the amount of lo-end frequencies
Gain control for the Channel 3, . This Control knob determines input sensitivity
when Channel 3 is active. Use it to dial in the desired amount of preamp saturation
level.
Extremely high gain and volume levels in Lead mode can produce powerful
feedback. Avoid feedback squeals; they can lead to hearing loss and damage
Lead (3)
IMPORTANT, PLEASE NOTE: do not flip the Stand By switch off and on in short time
intervals if a P.T.M. LED (12, 13, 14, 15) indicates a tube failure. Let a few minutes
pass by before you engage the poweramp again after you have switched it off!
16 Presence
A tip from the designer:
and affects all four channels.
and affects all four channels.
The two Lead channels offers distinctive tonal characteristics; thus they are suited for
different playing styles and techniques. The leaflet “Sound setting samples" illustrates
several application examples.
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