SWR 350x Owner's Manual page 9

Midrange Controls
Your 350x comes equipped with two different controls for setting the amount of midrange present: one for
boosting and cutting the level of midrange, and another for setting the specific midrange frequency that will
be adjusted in level.
Midrange Level Control
The Midrange Level control cuts or boosts the frequency set by the Midrange Frequency control. Starting at
mid-position, turning the Level control counter-clockwise cuts the desired tone. Turning the Level control
clockwise boosts the desired tone (set by the Midrange Frequency control). When the level control is set at
mid-position ("center-click"), turning the frequency control will have no effect on the sound.
To find the midrange area you are looking for:
1. Adjust the Midrange Level control to the full boost or cut position.
2. Rotate the Midrange Frequency control until the desired area you wish to cut or boost is found.
3. Adjust the Midrange Level control to the desired amount of cut or boost.
Midrange Frequency Control
The Midrange Frequency control sets the area that is to be cut or boosted by the Midrange Level control. If
the Midrange Level control is set at mid-position, turning the Frequency knob will have NO affect.
Some hints: If you need to "cut through" the band a little more, try boosting 200 to 400 Hz. If you like a
more transparent or "scooped" sound, try cutting at 800 Hz. The midrange controls are especially useful in
controlling fretless basses and their inherent qualities.
Treble Control
The Treble control employs a shelving-type circuit and boosts or cuts the high frequencies (and their
subsequent octaves) +/–15dB from about 2kHz to 14kHz. Starting at mid-position, turning the control
counter-clockwise cuts the treble response, while turning the control clockwise boosts the treble response.
Effects Blend Control
The Effects Blend Control "blends" the signal sent from your instrument with the signal coming from your
EXTERNAL effects unit. (In other words, it has nothing to do with the SubWave™ effect onboard your 350x.)
With the Effects Blend fully counter-clockwise ("DRY"), no signal from your external effects unit will be heard.
As you turn this control clockwise, more of the effect can be heard in the overall sound. When the Effects
Blend control is set fully clockwise ("WET"), no true or unaffected signal is heard other than what your exter-
nal effects unit provides. If your external effects unit has a similar control, adjust it to the fully clockwise
("WET") position. This will avoid any possible phasing problems.
The Effects Blend circuit is similar to that used on recording consoles with the effects loop on a "side chain"
to the normal circuit. Unless the control is set to the full "wet" position, you will always get the full sound of
your instrument AND get the diversity an effects unit offers. This circuit is also effective in reducing noise
generated by effects units because it is located after the gain stages in the preamp.
The Effects Blend control functions only when the Effects Loop is being used. It is activated when a 1/4"
phone plug is inserted into the Effects Receive jack (for more information, please see the heading titled
"Effects Loop" in the "Rear Panel Features" section later in this guide).
Limiter/Compressor Circuit
The Limiter found in the 350x is a soft knee type limiter. The Limiter circuit is located after (post) the Master
Volume and before (pre) the power amplifier. Therefore, the Limiter is driven by the Master Volume control. Its
threshold (starting point) is preset by the factory so that the user can get maximum overall apparent volume
without unduly overdriving (or "clipping") the power amplifier, which can eventually damage the unit's internal
circuitry. This can also be helpful in preventing speaker damage when running your system at high volumes.
Activating or Defeating the Limiter Circuit
You may either activate or defeat the Limiter circuit via the Effects Blend control, which doubles as an on/off
switch for the Limiter. The "In" position activates the Limiter Circuit, and is the default setting as shipped from
the factory. To defeat the Limiter, simply pull "out" on the knob of this control until you hear and feel a
350x OWNER'S MANUAL • 7