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Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual
Audio Equipment · 26 Q&As

Dbtechnologies A4TI Professional 4 Channel Power Amplifier

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Common questions

Common Questions

26 total
1

What does the PROTECT LED indicate on the front panel?

The PROTECT LED lights up when all protection circuits are activated. This indicates the amplifier has triggered its built-in protection mechanisms. (Page 2)

2

What does the LIMITER LED mean when it lights up?

The LIMITER LED lights when compression/limiting is actively protecting the amplifier. This means the amplifier is reducing gain to prevent damage from excessive signal levels. (Page 2)

3

Is it safe to touch the output terminals while the amplifier is powered on?

No — touching uninsulated output channels or bare wiring while the power is on may result in an unpleasant sensation. You must not touch uninsulated output channels or bare wiring when the amplifier is powered on. (Page 2)

4

What is the maximum output power of the A4ti in bridge mode?

In bridge mode at 8 Ω, the A4ti delivers 1500 W x 2. This power figure is tested under the condition of a 20ms burst, 1kHz sine wave at 1% THD. (Page 4)

5

What is the frequency response of the A4ti amplifier?

The A4ti has a frequency response of 20 Hz to 20 kHz (+0/-1 dB). This specification may be subject to change without notice as dBTechnologies reserves the right to make design or manufacturing improvements. (Page 4)

6

What is included in the box when I purchase the A4ti amplifier?

The packing content includes the A4ti amplifier, a mains cable with a VDE connector, and quickstart and warranty documentation. No additional accessories are included in the box. (Page 2)

Show 20 more questions

What output modes can I select on the A4ti amplifier?

What input sensitivity options are available on the A4ti?

What is the correct startup procedure for the A4ti amplifier?

What does the Protect LED indicator mean on the front panel?

What does the Limiter LED on the front panel indicate?

What do the -20dB, -10dB, and -5dB LEDs on the front panel indicate?

Is it safe to touch the output channel connections while the A4ti is powered on?

What is the maximum output power of the A4ti amplifier?

What type of connectors are used for the speaker outputs and audio inputs on the A4ti?

What are the physical dimensions, weight, and frequency response of the A4ti?

What are the output power specifications for the A4TI in different configurations?

What input sensitivity options are available and how do I select them?

What should I do before turning on the A4TI for the first time?

What are the three amplifier operating modes available?

What do the indicator lights on the front panel mean?

What is the LINK MODE selector and what does it do?

Can I connect the A4TI to another amplifier using the LINK connector?

What is the frequency response of the A4TI?

What is the maximum altitude at which the A4TI can be used?

What safety warning should I observe regarding the output channels?

Full Manual

4 pages
Page 1
Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual — page 1

420120319Q Rev. 1.4

a4ti

Quickstart User Manual

Section 1

On

On

On

On

Signal

Signal

Signal

Signal

Limiter

Limiter

Limiter

Limiter

Pr

Pr

O

O

Tect

Tect

Pr

Pr

O

O

Tect

Tect

-20dB -20dB -20dB -20dB -10dB -10dB -10dB -10dB -5dB -5dB -5dB -5dB

Ch1

Ch2

Ch3

Ch4

Signal

Signal

Pro Fess Ion Al

4C H

P Ow E R

A M Pl I Fi

E R

0dB 0dB 0dB 0dB 0 0 0 0 0 0 0 0
  • -
  • -
    • 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 – Sezione 2”. 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 TECH­ NIQUES -Section 2" Las advertencias del presente manual se deben tener en cuenta conjuntamente con las del “MANUAL DEL USU­ ARIO” - Sección 2”. A.E.B. Industriale Srl Via Brodolini, 8 Località Crespellano 40053 VALSAMOGGIA BOLOGNA (ITALIA) Tel +39 051 969870 Fax +39 051 969725 www.dbtechnologies.com [email protected]

    Page 2
    Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual — page 2

    420120319Q Rev. 1.4

    a4ti Thank you for choosing a dBTechnologies Product! A4TI is a powerful 4 channel class D amplifier (PFC and SMPS power supply) with 4- poles speakON outputs. The user can choose between BRIDGE, PARALLEL, or STEREO MODE. A LINK MODE selector increase the versatility of the use. The balanced inputs, with sensitivity selector, can be linked to create a more complex amplifiers network. It can cover a wide range of applications, expecially in fixed installations.

    Packing Content

    • A4TI amplifier • mains cable (VDE connector) • this quickstart and warranty documentation

    Rear Panel

  • VDE connector with fuse
  • CH1, CH2, CH3, CH4 4-poles speakON outputs
  • Balanced CH3 and CH4 inputs (XLR connector) with Link outputs
  • Balanced CH3 and CH4 inputs (XLR connector) with Link outputs
  • Sensitivity selector for CH3-CH4 inputs
  • LINK MODE selector
  • CH3-CH4 MODE selector
  • Sensitivity selector for CH1-CH2 inputs
  • CH1-CH2 MODE selector

    • Front Panel

  • Lights at the action of all the protection circuits
  • Lights when compression/limiter is protecting the amplifier
  • Lights when the output signal is around -5 dB than full power.
  • Lights when the output signal is around -10 dB than full power.
  • Lights when the output signal is around -20 dB than full power.
  • Lights at the presence of input audio signal
  • Lights when the amplifier turn on

    • On

    Signal

    Limiter

    Protect

    -20dB -10dB -5dB
  • CH1, CH2, CH3, CH4 level knobs
  • CH1, CH2, CHH3, CH4 meters
  • Power switch
    • Attention! Touching uninsulated OUTPUT CHANNELS or bare wiring may result in an unpleasant sensation. Don’t touch uninsulated OUTPUT CHANNELS or bare wiring when power on.

    Page 3
    Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual — page 3

    420120319Q Rev. 1.4

    a4ti

    First Turn On

    • Connect the passive loudspeakers, using cables with speakON connectors (2 outputs), depending on impedance, max rated power, amplifier mode, link mode. Select the amplifier MODE (7, 9) and LINK

    Mode (6).

    • Connect the inputs, using balanced cables with XLR connectors (6-7 outputs). Select the inputs sensitivity. • If needed, link the input LINK connector, to relaunch the signal to a second amplifier. • Set the level knobs (10) to the minimum level. • Connect the mains cable (socket 1), turn on the amplifier (12). • Adjust the gain controls (8, 9), while the audio signal comes from your source. The user can select the input sensitivity, the output mode of the amplifier and the link mode. The input sensitivity can be selected from (0.775 V, 1 V, 32 dB), depending on the charaterisctics of the source. The amplifier can operate in three different modes:
  • brigde
  • parallel
  • stereo
    • The LINK MODE (1 in 4 / 2 in 4) increase the possibilities in the usage. All the cases are explained in the upper referencetable.

    Input Sensitivity / Output Mode / Link Mode

    Page 4
    Dbtechnologies A4TI Professional 4 Channel Power Amplifier manual — page 4

    420120319Q Rev. 1.4

    a4ti Type: Class D amplifier Output Power: 8 Ω stereo* 500 W x 4 4 Ω stereo** 750 W x 4 8 Ω bridge** 1500 W x 2 Frequency response: 20 Hz - 20 kHz (+0/-1dB) Input sensitivity: 0.775 V / 1 V / 32 dB Product dimensions (mm): 483(w) x 435(d) x 89(h) Weight: 11 kg

    Main Tech Specs

    Features, specification and appearance of products are subject to change without notice. dBTechnologies reserves the right to make changes or improvements in design or manufacturing without assuming any obligation to change or improve products previously manufactured. Check the complete user manual on www.dbtechnologies.com for further information about the system and available accessories. Scan with your QR reader App to download the complete user manual.
  • The power is tested under the condition of 40ms burst,1kHz sine wave and 1% THD.
    • ** The power is tested under the condition of 20ms burst,1kHz sine wave and 1% THD. This product is suitable for usage up to an altitude of 2000 m.