Telex SbA760 - Manual (Page 4)

Electro-Voice ® SbA760 User Manual 1
0. Introduction
Congratulations! In buying an Electro-Voice ® SbA760 you decided on getting one of today’s most ad-
vanced active subwoofers incorporating sophisticated technology.
The active 15" subwoofer SbA760 with integrated 760 watt power amplifier has been specially designed to
provide fundamental bass support for professional full-range and multi-channel cabinets. Through the
integrated electronic frequency crossover of the SbA760 setting up an active stereo multi-channel system
is truly simple. The stereo audio signals for the mid-high range cabinets are provided via the MID-HIGH
outputs on the SbA760. Additionally provided are all connection facilities for using the SbA760 as active
mono subwoofer in active 2-way or “add-on operation”. Manufactured from baltic birch and housing a high-
performance Electro-Voice
® EVS-15FR woofer, the SbA760 withstands even the hardest strain during
transport and operation. While input connection is also possible via phone type jacks, all input and output
signals are output via professional XLR-type connectors. The integrated High-Efficiency 760W power
amplifier optimally matches the EVS-15FR woofer offering highest dynamic and audio performance and
ensures at the same time that the EVS-15FR woofer is always operated in its optimum operation range.
Extensive protection circuitry like VCP, DC/HF-protection, audio limiter, Back-EMF protection and thermal
protection are employed to securely monitor the compliance to these operation limits guaranteeing that the
SbA760 provides outstanding performance even under most demanding conditions. The SbA760 is also
especially suitable for many rental applications. Compared to Class-AB-operated amps and because of
utilizing Class-H High-Efficiency technology the power amplifier produces significantly less power loss, and
additionally reduces thermal stress of all components. Employing fans to ensure thermal stability is not
necessary because of the Class-H technology and use of comprehensively dimensioned cooling profiles.
The enclosure is sealed with extremely durable Futura coating and a robust powder-coated steel grille
provides protection for the Electro-Voice
® EVS-15FR woofer against mechanical damage. All controls and
the cooling profiles of the power amp module are recessed to provide optimum protection for the sensitive
parts of the SbA760 even during transportation. Two carrying handles, four castors and an integrated
threaded pole-mount stand flange allow comfortable transportation and optimum, space saving installation.
Because of its versatility, the SbA760 can be easily integrated into any existing sound reinforcement instal-
lation.
Unpacking and Warranty
Open the packing and carefully take out the SbA760. Remove the protective foil from the carrying handles.
A power cord and the warranty card are supplied in addition to this owner’s manual. Please make sure that
all details are filled in on the warranty card. Only a completely filled in warranty certificate entitles you to
stake any warranty claims. Therefore, keep the original invoice together with the warranty certificate at a
safe place.
Setup and Connections
Place the SbA760 on an even ground if possibly by using the supplied rubber feet to ensure safe opera-
tion. Make sure to check the stability of the system when using pole-mount stands. Do not cover the heat
sink on the subwoofer’s rear during operation. Otherwise, the SbA760 will enter protection mode because
of thermal overload. Although this provides reliable protection for the subwoofer, sound reproduction is
muted until the normal operation mode is regained. AC power is supplied via the Neutrik’s professional
“PowerCon” connector system and by use of an 15’ (5m) AC cord. This ensures an absolute secure and
reliable power supply connection. However, with large installations consisting of several active cabinets, the
use of high-quality AC distributors that allow high power consumption and offer reliable protection through-
out the entire system is strongly recommended.
Before establishing the AC connection for the first time, make sure that the SbA760’s operation
voltage setting, which can be found on a label next to the AC switch, corresponds to your local
AC voltage.