dB Technologies DVA KS20 Manual

www.dbtechnologies.com [e-mail]
DVA KS20 Rev 1.1 cod. 4201202 4Q
Quick start user manual
Section 1
The warnings in this manual must be observed together with the "User Manual - Section 2".
Le avvertenze nel presente manuale devono essere osservate congiuntamente al MANUALE D’USO - Sezione2”.
Die Warnungen in diesem Handbuch müssen in Verbindung mit der "BEDIENUNGSANLEITUNG - Abschnitt 2" beobachtet
werden”.
Les avertissements specifiés dans ce manuel doivent être respectés ainsi que les "CARACTERISTIQUES TECHNIQUES -
Section 2"
A.E.B. Industriale Srl Via Brodolini, 8 Località Crespellano 40053 VALSAM GGIA B L GNA (ITALIA)
Tel [phone] Fax [phone] www.dbtechnologies.com [e-mail]

www.dbtechnologies.com [e-mail]
DVA KS20 Rev 1.1 cod. 4201202 4Q
Thank you for choosing a dBTechnologies Product!
DVA KS20 is an active horn loaded subwoofer with bass reflex, equipped with two 18” transducers with a 4” voice
coil. The powerful double DIGIPR ® G3 amplifier section, capable of handling up to 2000 W (RMS power), is
controlled by a DSP, which can perform a detailed customization of the output sound of the subwoofer. In particular,
thanks to the new interface, it is possible to quickly tune various types of installation, controlling the level, the phase
and delay of the output. The input and output audio connections can be set in mono or stereo configuration.
Check the site www.dbtechnologies.com for the complete user manual!
1) Unpacking
The box contains:
N°1 DVA KS20
N°1 Mains cable with Neutrik® powerC N connector
N°1 100-120 V FUSE
This quick start and warranty documentation
2) Easy installation
DVA KS20 is equipped with:
Hole for M20 pole mounting (A)
Pick points for DRK-10 and DRK-20 fly bars
mounting (B)
3 Metal handles per side, for easy handling (C)
Additional holes for direct wheels mounting
(D)
In particular two installation examples are shown in
the following pictures:
For further information about accessories and
configurations, download the complete user manual:
www.dbtechnologies.com/EN/Downloads.aspx or scan the
QR code.
Stacked: DVA KS20 subwoofer,
DRK-10/20 Fly Bar, DVA K line-
array
DVA K line-array flown with DRK 10/20 Fly
Bar, 1 matched KS20 subwoofer

www.dbtechnologies.com [e-mail]
DVA KS20 Rev 1.1 cod. 4201202 4Q
First switch on:
The double DIGIPR G3® amplifier of DVA KS20 is
controlled by a powerful DSP. All the connections and
controls are in the rear amplifier control panel:
1 – Xover switch (for the choice of frequency
cutoff)
2 – utput mode switch (Link or Xover mode)
3 – LEDs (Limiter, Signal, Mute/Prot)
4 – Service data mini B-type USB port
5 – Subwoofer level rotary encoder
6 – Subwoofer Setup switch (Phase) and BCD
rotary switch (Delay)
7 – Balanced inputs
8 – Balanced outputs
9 – Auto range mains input and mains links
10 – Mains fuses
WARNING
The fuse is factory setted for 220-240 V operation.
If it is necessary to change the fuse to 100-120V range:
1. Disconnect the speaker from any ca le
2. Wait 5 minutes
3. Su stitute the fuse with the correct one supplied
Use only ca les with Neutrik® connectors!
a) nce you have properly set up the desired
configuration (see also the DVA KS20 complete user
manual and accessories instructions for further
information), connect the audio input (mono) or
inputs (stereo) (7). Connect the output (mono) or
outputs (stereo) (5) and consequently set the
Subwoofer level to 0 dB in the right position (5).
b) Set properly the utputs Mode (2), (“Link” in
case of direct link connection, “Xover” in case the
output is sent to another speaker or speaker array). If
you have selected the “Xover” Mode with the related
switch (2), select the correct frequency with the Xover
switch (1).
c) Choose the Subwoofer Setup (Delay and
Phase) (6) to obtain the proper behavior. For example,
in the 3-elements cardioid configuration, set the
“Phase” to 180° and the “Delay” to 3.5 mSec. For
another example, in Endfire configuration, with two
DVA KS20s front panels at the distance of 1,35 mt, let
the “Phase” to 0° value, and set the “Delay” to 4.0 ms
in the most forward subwoofer.
N.B. Please note that these values are purely for
information and they can depend on different setup
varia les.
d) Connect the power link (9) to potential other
DVA KS20s or line-array elements, if needed. Then
connect the power supply (9) to the module. The
“Ready” LED turns on, signaling the proper power
connection. Turn the Subwoofer level (5) to the desired
value. The “Signal” LED (3) starts blinking at the
presence of audio signal (greater than -20 dBu).
For further information, download the complete user
manual: www.dbtechnologies.com/EN/Downloads.aspx
or scan the QR code.
Cardioid configuration
Endfire configuration

www.dbtechnologies.com [e-mail]
DVA KS20 Rev 1.1 cod. 4201202 4Q
Technical Data
Speaker Type: Active horn loaded subwoofer
Acoustical data
Frequency Response [-3dB]: 34 – 120 Hz
Max SPL: 138 dB
LF: (2x) 18”
LF Voice Coil: 4”
Crossover frequencies: 90 Hz, 120 Hz LPF
Amplifier
Amp Technology: (2x) Digipro® G3
Amp Class: Class-D
RMS Power: 2000 W
Peak Power: 4000 W
Processor
Controller: DSP, 28/56 bit 48 kHz
Limiter: Peak, Thermal
Controls: Rotary Delay Control (0-4.5 ms, steps: 0.5 ms)
and switches (Outputs Mode, Phase, Xover), Subwoofer
level
Input
Mains connections: PowerCON ® In/link
Signal Input: (Balanced) 2x IN (L,R)
Signal Out: (Balanced) 2x OUT (L,R)
USB connector: mini USB B-type (for SERVICE DATA)
Mechanics
Housing: Birch plywood
Grille: CNC Metal grille black painted
Mounting points: 2x Pick points for DRK10/20 frames
Pole Mount: yes, for M20 screw pole mount
Width: 1100 mm (43.31 in)
Height: 580 mm (22.83 in)
Depth: 720 mm (28.35 in)
Weight: 84 kg (185.19 lbs.)
Download the complete user manual on:
www.dbtechnologies.com/EN/Downloads.aspx
EMI CLASSIFICATION
According to the standards EN 55103 this equipment is designed and suitable to operate in E3 (or lower E2, E1) Electromagnetic environments.
FCC CLASS B STATEMENT ACCORDING TO TITLE 47, PART 15, SUBPART B, §15.105
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
1. Reorient or relocate the receiving antenna.
2. Increase the separation between the equipment and receiver.
3. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
4. Consult the dealer or an experienced radio/TV technician for help.
WARNING: Make sure that the loudspeaker is securely installed in a stable position to avoid any injuries or damages to persons or properties.
For safety reasons do not place one loudspeaker on top of another without proper fastening systems. Before hanging the loudspeaker check
all the components for damages, deformations, missing or damaged parts that may compromise safety during installation. If you use the
loudspeakers outdoor avoid spots exposed to bad weather conditions.
Contact dB Technologies for accessories to be used with speakers. dBTechnologies will not accept any responsibility for damages caused by
inappropriate accessories or additional devices.
Features, specification and appearance of products are su ject to change without notice.
dBTechnologies reserves the right to make changes or improvements in design or manufacturing without assuming any o ligation to change
or improve products previously manufactured.
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