ZT LBA1, Руководство пользователя

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Feedback Cut:
The LUNCHBOX Acoustic’s FEEDBACK CUT feature is designed for a quick, simple elimination
of feedback. The FEEDBACK CUT is a master control that affects both Microphone and
Instrument channels. When FEEDBACK CUT is set to Off, the LUNCHBOX
Acoustic delivers it’s
normal EQ curves. Positions 1, 2, and 3 target specific frequencies that are common feedback
offenders. Each different knob position carves a notch in a different frequency. This feature is not
guaranteed to solve every feedback problem in every environment, but we have found it to be very
effective in most situations. (Hint: If you are playing your acoustic guitar close to and facing the
amplifier at a high volume, you will experience feedback. Move away from, or turn the instrument
away from the amp.)
AUX Input:
The LUNCHBOX Acoustic can accept a stereo line input from an audio source such as a PC, CD,
or MP3 player via a standard
1
/
8
” Stereo jack on the rear panel, labeled AUX INPUT. This input
is only affected by the master VOLUME control; no other signal processing is applied (unless
you’re going thru the EFX loop). To adjust the relative balance between your guitar or microphone
and your MP3 player, you can use the GAIN controls and the output volume on your player. We
recommend that you disconnect any cables from the AUX INPUT when it is not in use.
EFX Loop:
Allows effects to be inserted after the input stage, resulting in a cleaner, more defined output
signal under many conditions. The Send/DI output can also be used as a direct output to a
powered system such as another amplifier or a P.A. However, plugging into the EFX Return will
interrupt the LUNCHBOX
Acoustic’s internal signal path (except for the master VOLUME), so that
the sound can be sent to, and received from, your effects rig. Be aware that any effect connected
via the EFX Loop will be applied to both Microphone and Instrument channels on the LUNCHBOX
Acoustic .
Headphone/Line Level Output:
This ¼” Stereo connector can be used to run most stereo headphones. (However, the signal
itself is always mono.) The line output is also useful for running into house sound, or a recording
rig. It has its own level adjustment, so that you can adjust the level of your phones once the
LUNCHBOX
Acoustic controls are set where you want them.
Unlike most headphone outputs, this one doesn’t mute the internal speaker. If you want to do that,
just set the SPEAKER switch to External. This approach gives you total control of what is on or off
at any given time. For example, you can use the LUNCHBOX
Acoustic to monitor the sound on
stage, even when routing into the board via the line out.