DVA S1521N Subwoofer, 21“ Bassreflex

The DB TECHNOLOGIES DVA S1521N is a powered 21“ subwoofer housed in a bass reflex enclosure that we tuned for accurate, ultra low-frequency response.

• It readily integrates into large DVA and DVX Series PA systems as a sub-bass unit or as a stacked subwoofer.
• Made of durable birch multiplex housing covered in robust black textured lacquer, the high-quality housing provides six carrying handles, an M20 pole mount, and bushings on the rear panel that accept casters.
• Pick-points for attaching DRK-10 and DRK-20 harnesses are built into the top panel to enable easy, safe stacking.

Features:

• Active Subwoofer 1500 Watt RMS
• Top-notch 21“ woofer - Serving as the unit’s transducer is a state-of-the-art 21” woofer with 4.5“ voice coil. This combination of high-quality materials and sophisticated magnetic drivers fields some pretty impressive results.
• Even very low bass frequencies are rendered with pinpoint precision and hairtrigger transient response, treating audiences to a breathtaking audio experience.

Rear Panel Features:

CONTROLS AND FUNCTIONS

• "Balanced Audio" section

1) "INPUT” - INPUT CONNECTOR - Balanced input at line level. It is able to accept “XLR” sockets.

2) "LINK” - OUTPUT CONNECTOR - The “XLR” connector connected in parallel with input (1) can be used to send the  input audio signal to another amplified speaker.

• "Status" section

 3) “LIMITER” INDICATOR LIGHT - This indicator comes on red to indicate that the internal limiter circuit has tripped. This prevents amplifier distortion and protects the speakers against overloads.

4) “SIGNAL” INDICATOR LIGHT - This indicator comes on green to indicate the presence of an input signal to a level  higher than-20dBu.

5) “MUTE/PROT” INDICATOR LIGHT - This yellow indicator indicates amplifier status. In normal operating conditions, the LED is off; if it flashes or is always on, refer to the diagnostics table to check  amplifier status.

6) “READY” INDICATOR LIGHT - This indicator comes on green to indicate that the main power voltage is correct. In  normal operating conditions, the LED is on; if it flashes or is off, refer to the diagnostics table to check amplifier status.

• "Input control " section

7) “INPUT SENS” INPUT SENSITIVITY CONTROL - This control regulates the sensitivity of the signal amplifier input. This control does not affect the “LINK” (2) output level.

• "Xover Out " section

8) OUTPUT CONNECTOR  - Internal crossover audio balanced output, by XLR connector. The signal from this output can be sent to any other amplified speaker.The crossover frequency can be selected by means “Xover Frequency” switch (9).

9) "Xover Frequency selection 24dB/Oct” SELECTOR  - This selector permits selection of crossover frequency from 60Hz to 105Hz (step 5Hz) with a slope of 24dB/Oct.

10) “Remote Preset Active” INDICATION LIGHT - When the amplifier is remotely controlled via RDNET, this yellow indicator indicates the exclusion of the below commands:Volume (7) , Phase (11) , Xover Frequency selection (9) , Delay (12

• “SUB Phase/Delay” section

11.) “PHASE ” SWITCH - This switch permits 180° rotation of the audio signal reproduced by subwoofer.

12.) “DELAY” CONTROL – This control allows to delay the sound signal reproduced by the subwoofer.

• “RDNET " section

13) INPUT CONNECTOR "DATA INPUT”  -  RJ45 connector 'data input.

14) OUTPUT CONNECTOR "DATA INPUT”  - RJ45 connector 'data output for cascading connections.

15) “LINK” INDICATION LIGHT - This green indicator turns on only when the amplifier has recognized and is  connected with the main RDNET unit via the computer.

16) “ACTIVE” INDICATOR LIGHT  - This yellow indicator flashes when there is an active data transmission between  RDNET and the amplifier module.

•  “DSP UP-grade " section

17) “Service Data USB” Connector  - Via this USB connector, it is possible to update the firmware of the DVA S1521N  amplifier module using the computer and a dedicated program.

18) "MAINS INPUT" POWER SOCKET - For connecting the power cable. The connector used for mains connection is a POWER CON® (blue)

19) “LINK” RELAUNCH POWER SOCKET - For relaunching the mains power. The output is connected in parallel with input (18) and can be used to power another amplified speaker. The connector uses a POWER CON® (grey)

 20) COOLING GRILLE - These grilles permit cooling the amplifier during operation. Do not block accesses and clean the grilles whenever necessary to ensure correct air circulation.

Specifications: