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Johannus DSA-4 User Manual

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User’s Manual
JOHANNUSJOHANNUS
Digital Stereo Acoustics DSA-4
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Johannus DSA-4 Specifications

Acoustic System IconAcoustic System
voltage230V (110V)
frequency50 Hz (60 Hz)
max supplied power120Watt
max power per channel20Watt
impedance per channel
input impedance1MÙ
input level-10dBV tot +4dBV
input level max+10dBV
frequency range20Hz till 20.000Hz (± 1dB)
dimensions21, 6 x 13, 2 x 19, 3cm (8.1" x 5.2" x 7.6")
weight3, 5kg ( 7.7lbs)
Loudspeaker Boxes IconLoudspeaker Boxes
system2-way
impedance
power nominal50Watt
power max100Watt
frequency range29Hz till 22.000Hz
dimensions24, 1 x 39, 1 x 22, 0 cm (9.5"x15.4"x8.7")
weight4, 6kg ( 10 lbs)

Summary

Installation

Connecting Loudspeaker Boxes

Instructions for preparing loudspeaker cables, including cutting, splitting ends, and stripping wires for connection.

Connecting Other Devices

Setup and Powering On

Connecting the Power Cord

Instructions for checking voltage compatibility, connecting the power cord, and grounding the acoustic system.

Frontpanel Controls

Frontpanel Controls Overview

Details all controls on the DSA-4 front panel, including switch, LED indicator, and rotary controls for level, mix, and program.

Input Level Adjustment

Details how to use the INPUT rotary control to adjust the input signal level for optimal LED indication.

Direct vs. Acoustic Sound Balance

Explains the MIX rotary control for balancing the direct (dry) signal and the reverb (wet) acoustic signal.

Output Level Adjustment

Describes the OUTPUT rotary control used to adjust the overall volume of the acoustic system's output channels.

Technical Specifications