Aufbaubeispiele; Level; Status Indicators; Power Switch - Electro-Voice Sb A760 Owner's Manual

LEVEL

This control sets the output volume of the SbA 760 in a range
between -oodB and +10dB. The internal power amplifier provides
a nominal input sensitivity of +6dBu.

STATUS INDICATORS

These indicators provide information about the actual operational
state of the SbA760's internal power amplifier.
SIGNAL indicates that an audio signal is present at the input and
that it is output.
LIMIT When lit this indicator signals that the internal power ampli-
fier is actually operated at the borders of clipping. Short-term blin-
king is uncritical, because the amp's audio limiter keeps distortion
under control, so that the sound is unaffected. Input overdrive,
which results in sound degradation, is a probable cause for a
continuously lit indicator. To prevent this from happening, reduce
the input level.
VCP lights when the power amplifier's "Voice-Coil-Protection" is
activated. During dynamic peaks the integrated power amplifier is
capable of producing output levels that clearly exceed its stated
nominal output capacity. Therefore, the SbA760 employs a VCP-
circuit (Voice-Coil-Protection), which simulates the thermal beha-
vior of the speaker's voice-coil, automatically reducing the energy
fed to the speaker system on the occurrence of thermal overload.
PROTECT Lights when one of the multiple comprehensive pro-
tections, e.g. against thermal overload, HF, DC or Back-EMF of
the power amplifier is activated. Preventing the woofer from being
damaged, it is shutoff via relays in the protect mode. Additionally,
the input level is being reduced. During power-on the PROTECT
LED lights for approximately 2 seconds, which is normal. This
only indicates that all protection circuitry has been activated pro-
perly.

POWER switch

Mains switch for switching the SbA760's power ON or OFF. The switch lights after
turning the power ON. Make sure that the mains cord is correctly connected if the
switch is not lit upon turning the power on. If the mains cord is correctly connected
and the mains switch does not light upon power-on, please contact your local dealer.
Mains fuse
During normal operation the mains fuse of the SbA760 only blows at the occur-
rence of a malfunction. Exchanging the fuse is only permissible using a fuse of the
same type (current, voltage and release characteristic). In case the fuse blows fre-
quently, please contact your local dealer.
MAINS OUT
This PowerCon mains out socket allows the connection of additional cabinets, e.g.
SxA360, using special cords (PC150 or PC800).
To prevent mains network overload, connecting more than three SbA760
cabinets to a single mains outlet (10A-16A) is not recommended.
MAINS IN
Mains connection is established via a PowerCon connector. A 5m long mains cord
with PowerCon plug is supplied.
CAUTION: THIS APPLIANCE HAS NO USER-SERVICABLE PARTS INSIDE.
LEAVE ANY SERVICING AND MAINTENANCE QUALIFIED SERVICE TECHNI-
CIANS ONLY.
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CONTROLS