11. Selectable Limiter
In order to prevent hard clipping of the power amplifier, a selectable limiter is provided.
12 Master Volume Control
The Master volume control adjusts the overall signal level of the amplifier.
13. VU Meter
The 12 segment LED VU-meter monitors the overall signal going into the power amplifier.
The amber LED indicates that the signal is approaching maximum input to the power
amplifier and a red LED indicates the signal has exceeded its maximum (and clipping may
occur). A peak-hold function allows the highest signal LED, tracked by the VU meter, to
remain momentarily lit allowing users to monitor the output while playing.
14. Protect LED
The red Protect LED displays the status of the internal protection circuitry. When the
DynaBass 800 is initially powered up internal protection circuits are activated, no output
will be heard until the red Protect LED automatically shuts off. In a rare case of amplifier
shutdown or if the output is shorted, the amplifier will take approximately 15-20 seconds
to reinitialize and obtain full power.
15. 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).
16. Power
The LED above the Power switch will illuminate when the unit is on.
Rear Panel
17. Dual Footswitch Jack (Tube-Drive and EFX-Return)
A dual footswitch jack can be used to switch the
TUBE
Drive and the external Effects on and off.
The footswitch uses a standard TRS ¼-inch based dual footswitch (AFS-2). When either
effect is activated, corresponding LED’s on the amplifier will illuminate on and off (and on the
footswitch as well). The Effects are only switchable by the footswitch, but the
TUBE
Drive 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.
18. 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. A very handy feature when onstage and the unpleasant
sound of tuning is not something you wish the audience to hear amplified through your
performance speakers or the sound system.
19. 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.
Note: When the Mute switch is engaged, a signal will not be sent to the mixing console
through the XLR output.