sescom SES-SBA-150W User manual

SES-SBA-150W
USER MANUAL
www.sescom.com

Contents
i
Contents
1Introduction 1
2Getting Started 1
3Overview 1
4Your SES-SBA-150W 2
5Connecting the SES-SBA-150W 3
5.1 Connecting the Stereo Audio Input 3
6Technical Specifications 5
Figures
Figure 1: SES-SBA-150W Functions 2
Figure 2: Connecting the Balanced Stereo Audio Input/Output 3
Figure 3: Connecting the Unbalanced Stereo Audio Input 3
Figure 4: Connecting the SES-SBA-150W 4
Tables
Table 1: SES-SBA-150W Functions 2
Table 2: DIP-switch Gain Levels 3
Table 3: SES-SBA-150W Technical Specifications 5

Introduction
1
1 Introduction
Thank you for purchasing the Sescom SES-SBA-150W. It is ideal for
presentation rooms and multimedia applications for quick, local audio
amplification, and for personal audio listening (for example, a PC and
portable CD player).
The Sescom SES-SBA-150W package includes the following items:
•The SES-SBA-150W
•Power adapter (24V DC input) and this user manual
2 Getting Started
We recommend that you:
•Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
•Review the contents of this user manual
3 Overview
The Sescom SES-SBA-150W is a high-performance Class D power amplifier
for line-level stereo audio signals. It accepts a balanced stereo audio signal on
a terminal block connector and delivers 150 Watts per channel of music
output to the speakers.
The SES-SBA-150W also features:
•Input and output on terminal block connections
•A volume control knob, gain control DIP-switches and a mute button
•24V DC power
To achieve the best performance:
•Use only good quality connection cables to avoid interference,
deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)
•Avoid interference from neighboring electrical appliances that may
adversely influence signal quality and position your SES-SBA-150W
away from moisture, excessive sunlight and dust
Caution – No operator-serviceable parts inside unit.
Warning – Use only the input power wall adapter that is
provided with this unit.
Warning – Disconnect power and unplug unit from wall
before installing or removing device or servicing unit.

Your SES-SBA-150W
2
4 Your SES-SBA-150W
Figure 1 and Table 1 define the unit.
Figure 1: SES-SBA-150W Functions
Table 1: SES-SBA-150W Functions
# Feature Function
1 INPUT Terminal Block Connector Connect to a balanced stereo audio source
2 OUTPUT Terminal Block Connector Connect to a balanced stereo acceptor (speakers)
3 GAIN DIP-switches 4-position switch for setting the basic gain level
4 24V DC Connector +24V DC for powering the unit
5 MUTE Pushbutton Press to disable/enable the audio output
6 VOLUME Potentiometer Knob Turn to raise or lower the output volume
7 MUTE LED Illuminates yellow when the volume is disabled
8 ON LED Illuminates green when receiving power

Connecting the SES-SBA-150W
3
5 Connecting the SES-SBA-150W
To connect the SES-SBA-150W, as the example in Figure 4 illustrates, do the
following1
1. Connect the balanced stereo audio source (for example, a stereo audio
player) to the INPUT terminal block connector.
:
2. Connect the OUTPUT terminal block connectors to the acceptors (a pair of
speakers). Do not ground the loudspeakers.
3. Connect the 24V DC power adapter to the power socket and connect the
adapter to the mains electricity.
4. If necessary adjust the basic volume level by setting the GAIN DIP-
switches (see Table 2).
5. Adjust the output volume by turning the VOLUME potentiometer.
Table 2: DIP-switch Gain Levels
Switch
Setting 00 01 10 11
Gain 20dB 26dB 32dB 36dB
5.1 Connecting the Stereo Audio Input
Figure 2 and Figure 3 illustrate how to wire a balanced/unbalanced input
connection:
Figure 2: Connecting the
Balanced Stereo Audio
Input/Output
Figure 3: Connecting the
Unbalanced Stereo Audio
Input
1 Switch OFF the power on each device before connecting it to your SES-SBA-150W. After connecting your
SES-SBA-150W, switch on its power and then switch on the power on each device

Connecting the SES-SBA-150W
4
Figure 4: Connecting the SES-SBA-150W

Technical Specifications
5
6 Technical Specifications
The SES-SBA-150W technical specifications are shown in Table 3:
Table 3: SES-SBA-150W Technical Specifications1
INPUT: Balanced stereo audio on a terminal block connector
OUTPUT: Balanced stereo audio (speakers) on a terminal block connector
OUTPUT POWER: 40W per channel into 8Ω
OUTPUT MUSIC POWER: 150W per channel into 8Ω
INPUT SENSITIVITY: 1.2Vrms
AMPLIFIER TYPE: Class D
VOLTAGE GAIN: 20dB (x10)
BANDWIDTH (-3dB): 20kHz
S/N RATIO: 60.2dB
COUPLING: DC
AUDIO THD + NOISE: 1.9%
AUDIO 2nd HARMONIC: 0.3%
POWER SOURCE: 24V DC, 5A
DIMENSIONS 10.7cm x 10.4cm x 4.0cm (4.2" x 4.1" x 1.6") W, D, H
WEIGHT: 0.32kg (0.7lbs)
ACCESSORIES: Power supply
1 Specifications are subject to change without notice