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12. Mute Switch
The Mute switch disengages the preamp signal from the Line Out and power amplifier,
disabling signals sent to the mixing console and speaker cabinets. The Tuner Out jack is still
enabled (see Tuner Out in the Rear Panel section).
13. Line Out Switch and XLR Line Out Jack
This jack is used to connect directly to mixing consoles. You may prefer to use this when
performing live or recording in the studio.
Selecting the Pre-EQ option in the Line Out mode selection switch (located on the front
panel) makes the Line Out behave like a typical D.I. box: it provides a pre-EQ and pre-EFX
signal. The Post-EQ option sends the signal post-EQ and post-EFX, which enables the output
to drive another amplifier or the mixing console. A Ground Lift (lifts Pin 1 of the XLR) switch
is also provided to help when routing signals directly to other equipment or mixing consoles.
14. Selectable Limiter
In order to prevent hard clipping of the power amplifier, a selectable limiter is provided.
15. Distortion and EFX-Return Footswitch Jack
A dual footswitch jack can be used to switch the Distortion and the external Effects on and off.
The footswitch uses a standard TRS ¼-inch based dual footswitch (e.g. Yorkville AFS-2).
When either effect is activated, corresponding LED's on the amplifier will illuminate on and
off. The Effects are only switchable by the footswitch, but the Distortion can be enabled or
disabled by either the footswitch or the switch located on the front panel. The footswitch
control overrides the front panel switches.
16. Tuner
The Tuner out ¼-inch jack sends the signal from your bass guitar to an outboard instrument
tuner. Simply connect one end of a ¼-inch shielded cable to the Tuner Out jack and the other
to the instrument tuner. Pressing in the Mute button will mute the output to the speakers as
well as to the line out, but not the Tuner out.
Tip: Leave your tuner connected to the Tuner Out jack and Mute the signal any time you wish
to tune in silence. This is a very handy feature when onstage as the unpleasant sound of
tuning is not something you wish the audience to hear amplified through your performance
speakers or the sound system.
Note: When the Mute switch is engaged, a signal will not be sent to the mixing console
through the XLR output.
17. Amp In ¼-inch Jack
The balanced Amp In jack is located on the rear panel of the DynaBass 400. The Amp In jack
provides a direct path to the DynaBass 400's power amplifier, bypassing the preamp. The Master
control still controls the overall output level. Multiple DynaBass 400's can be linked together by
using the DynaBass 400's balanced XLR Line Out to additional DynaBass 400 Line In jacks.
18. Effects Send and Return ¼-inch Jacks
External effects processors are provided with a balanced post-EQ signal from the Effect
Send jack. The balanced Return jack is used to return effects (processed audio signals) back
into the DynaBass 400. The Effects Return control, located on the front panel, regulates the
blend of effected and un-effected signal. This input can also be used as an auxiliary input for
mixing in a secondary source of audio such as pre-recorded music.
User Note: The Effects Send jack can also be used as an additional line out for sending signals
to another power amplifier. The output of this jack is not muted when the Mute switch is enabled.
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