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"click." To re-engage the Limiter, push the control back in to its original position.
Limiter Active LED
When the threshold (starting point) of the Limiter circuit is reached, the Limiter Active LED will light, indicating
that the Limiter Circuit is active and helping to protect your power amplifier from clipping. The Limiter LED will
not illuminate when: a) the Limiter has been defeated by pulling out on the Effects Blend control; b) when
playing at levels not high enough to engage the circuit.
Note: If you have defeated the Limiter and you hear a loud, sharp distortion present in your sound – and
the Preamp Clip LED is not lighting up – re-engage the Limiter by pushing the Effects Blend control back
in. If the distortion goes away, you were probably clipping the power amp, which is not a good thing.
Remember, the Limiter circuit is there to protect your amplifier from such a state of operation.
Master (Volume) Control
The Master (meaning "Master Volume") control adjusts the level being sent to the power amplifier in your
350x – it controls the overall volume of the unit. Turning the control counter-clockwise reduces the overall
level, while turning the control clockwise boosts the overall level.
Two notes: The Master control never affects the level present at the various audio output jacks on the rear
panel – it only affects the level being sent to the power amplifier, and subsequently, your speaker outputs
only. Also, losses caused by external effects units can be recovered by increasing the Master control.
Power On/Off Switch
This switch turns the complete unit on or off. Setting the switch upwards to the "On" position turns on the
unit, and the switch itself will illuminate in red. Setting the switch downwards to the "Power" position will turn
the unit off, and the red light inside the power switch will turn off as well.
350x • REAR PANEL FEATURES
350x •
REAR PANEL FEATURES
Balanced (XLR) Output
The Balanced XLR out is a true electronically balanced output, suitable for studio and "front-of-house" (live)
mixing consoles. The level present at this output can be adjusted by using the XLR Pad control (see the "XLR
Pad Control" section below for more details). The signal appearing at the Balanced Output is governed by the
setting of the three-position XLR Mode switch located directly below it (Line/Direct/Direct + Sub).
In the DIRECT position, the Balanced Output signal comes from directly after the first stage of the
specially-selected 12AX7 preamp tube, giving you the sound of your instrument and some added warmth. In
other words, it becomes an active TUBE direct box. In this position, no front panel controls are functional and
the SubWave™ is not present.
In the LINE position, all front panel controls – including the Aural Enhancer, SubWave™, and EQ controls – are
functional except the Master control, and the signal is essentially the same as that heard through your
speaker system. If you are using an external effects device in the effects loop, that signal will also be present
when in the LINE position (dictated by the setting of the Effects Blend control on your 350x). When in this
position, the output level will be affected by the Gain control on the front panel as well as the XLR Pad
control. It's worth noting that changing the level of the Gain control will affect the signal present at your
speakers, the Effects Send jack, and the Balanced Output, while the XLR Pad control affects the level present
at the Balanced Output only. For this reason, it's usually better to set your Gain control in accordance with
the directions in the "Gain Control" previously listed in the "Front Panel Features" section of this manual, and
to use the XLR Pad control to set the level specifically for the Balanced Output.
The third position for this switch is the DIRECT + SUB position. In this position, the signal present at the
Balanced Output jack is the same as when in the DIRECT position, with one important exception: the
SubWave™ is present. What's the benefit of this setting?
We've found that most people who use effects pedals prefer to use them in front of the amplifier. In other
words, they run their bass into the effect pedal's input, then from the effect pedal's output into the front of
their amplifier. In live applications where sound reinforcement is required, often times the front-of-house
engineer will take a direct signal from the bass itself (via either a direct box, or the Balanced Output of your
8 • 350x OWNER'S MANUAL
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