Convenient Features - Roland BA-330 Owner's Manual

Convenient Features

Suppressing feedback
What is feedback?
Feedback occurs when sound that's being output from a speaker
enters a microphone or pickup and is amplified and output again
from the speaker, producing an unpleasant oscillation (a squealing
or howling noise).
Using the anti-feedback function
What is the anti-feedback function?
This function suppresses the feedback that can occur between a
guitar or microphone and the amplifier. It does so by attenuating
the sound of the frequency at which feedback is occurring.
The BA-330 lets you suppress feedback by using a single switch.
1.
Turn the [ANTI-FEEDBACK] switch "ON."
The anti-feedback function will be applied to the microphones or
guitars connected to the CH1 and CH2 inputs.
We recommend that you turn the anti-feedback function "ON" be-
fore you begin performing, since this will prevent feedback during
your performance.
The anti-feedback function will be optimized each time you
turn on the BA-330's power.
Howling could be produced depending on the location of
microphones relative to speakers. This can be remedied by:
1. Changing the orientation of the microphone(s).
2. Relocating microphone(s) at a greater distance from
speakers.
3. Lowering volume levels.
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Connecting an additional unit to
increase the output (Stereo Link)
By connecting two BA-330 units you can create a stereo PA system
with greater output power.
This function is called "Stereo Link. "
You can connect Stereo Link in either of the following two ways.
• If using the input jacks of only one of the units
Use one cable with a 1/4" phone plug
• If you want to use the input jacks of both units
Use two cables having 1/4" phone plugs
Connection when using the input jacks of
only one unit
If you want to connect input sources
to the BA-330 (L)
Up to 6 input devices can be connected.
L
CH 1�6 �6 6
AUX IN
1.
Connect the devices to the BA-330 (L).
2.
Connect the STEREO LINK OUT R jack on the BA-330 (L)
and the STEREO LINK IN jack on the BA-330 (R).
3.
Turn on both BA-330 (L) and BA-330 (R).
4.
Adjust the volume levels on all devices.
5.
Adjust the BA-330 (L) and BA-330 (R) volume levels sepa-
rately using their [VOLUME] knobs.
If you want to connect input sources
to the BA-330 (R)
As described in "Connecting input devices to the L-channel
BA-330, " connect the R-channel unit's STEREO LINK OUT L jack to the
L-channel unit's STEREO LINK IN jack.
R