Electro-Voice SBA750 - Manual (Page 4)

Electro-Voice ® SbA750 User Manual 1
0. Introduction
Congratulations! In buying an Electro-Voice ® SbA750 you decided on getting one of today’s most ad-
vanced active subwoofers incorporating sophisticated technology.
The active 15" subwoofer SbA750 with integrated 750 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 SbA750 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 SbA750. Additionally provided are all connection facilities for using the SbA750 as active
mono subwoofer in active 2-way or “add-on operation”. Manufactured from baltic birch and housing a high-
performance Electro-Voice ® DL15Y woofer, the SbA750 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 750W power amplifier opti-
mally matches the DL15Y woofer offering highest dynamic and audio performance and ensures at the
same time that the DL15Y 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 em-
ployed to securely monitor the compliance to these operation limits guaranteeing that the SbA750 provides
outstanding performance even under most demanding conditions. The SbA750 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 ® DL15Y 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 SbA750 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
SbA750 can be easily integrated into any existing sound reinforcement installation.
Unpacking and Warranty
Open the packing and carefully take out the SbA750. 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 SbA750 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 SbA750 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 SbA750’s operation
voltage setting, which can be found on a label next to the AC switch, corresponds to your local
AC voltage.