SWR Baby Baby Blue, Руководство по эксплуатации

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14 • BABY BABY BLUE
CONTROLLING FEEDBACK AND SUSTAIN ON UPRIGHT BASSES
The original Baby Blue was and continues to be a ver y popular model for use with upright basses, largely
because of the compact size and ultra-flexible EQ. The low-mid to hi-mid areas (80 Hz to 1kHz)—which are
now easily adjustable on the semi-parametric EQ—can be extremely useful in correcting feedback in
acoustic bass guitars or upright basses.
If you are getting a slight amount of feedback from your instrument, tr y the following:
a) Set your volume to a point where the feedback is just occurring, but not out of control
b) Raise the Level control of the first or second band of the semi-parametric EQ that is activated to
about +7 dB
c) Slowly rotate the Frequency control from left to right. At some point (on either the first or second
band) during the rotation of the Frequency control, the feedback should get more intense. This is the
frequency area that needs attention, and once you find it, you should leave the Frequency control at this
position for a second to confirm the diagnosis
d) Now adjust the Level control counter-clockwise (in other words, cut the level of this frequency) until
the feedback disappears.
You may find that as you raise the volume, you may need to fur ther cut the Level control to achieve the
desired playing volume. In this example, when the feedback becomes more intense, listen closely to make
sure it is the same “pitch” as the original feedback. Feedback can be induced at different frequencies by
boosting their levels, and you cer tainly don’t need two problem areas.
Also, by reversing the technique above, you can achieve greater sustain in cer tain areas or on cer tain
notes. Finally, you can also use these guidelines to correct hot or dead spots on the neck of your
instrument or inherent in your speaker system.
EFFECTS BLEND CONTROL
The Effects Blend Control “blends” the signal sent from your instrument with the signal coming from an
external effects unit. 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 external 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 inser ted into the Effects Receive jack (for more information, please see the heading titled
“Effects Loop” in the “Rear Panel Features” section later in this manual).
EFFECTS BYPASS SWITCH
Located on the Effects Blend Control knob, this feature gives you the ability to easily defeat whatever
signal you have blended into the Baby Baby Blue’s effects loop from an external effects device. To
activate the feature, simply pull out on the Effects Blend Control knob until you hear a “click.” Push the
control back in to return the external effects to your signal. This feature will function regardless of the
position of the Effects Blend control.
Note: If you’re wondering why you can’t get any signal from your external effects unit even though you
have it blended in on the Effects Blend Control, check the position of this control and make sure it’s
"in” as opposed to “out.”