Dbtechnologies A4TI User Manual

a4ti

TECT

O

PR

TECT
O

PR

LIMITER

-5dB

LIMITER

-10dB

-5dB

-20dB

-10dB

-20dB

SIGNAL

ON

SIGNAL

SIGNAL
ON

CH1

-

0dB

0
0

-

-10dB

-5dB

-20dB

-10dB

-20dB

SIGNAL

ON

SIGNAL

SIGNAL
ON

CH4

CH3

CH2

0dB

0
0

0dB

0
0

-

0dB

0
0

-

PR

TECT
O

PR

LIMITER

-5dB

LIMITER

TECT

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ESS
F

PRO

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W
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QUICKSTART 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 – Sezione 2”.
Die Warnungen in diesem Handbuch müssen in Verbindung mit der "BEDIENUNGSANLEITUNG - Abschnitt 2"
beobachtet werden”.

Les avertissements speciés dans ce manuel doivent être respectés ainsi que les "CARACTERISTIQUES TECH­NIQUES -Section 2"

Las advertencias del presente manual se deben tener en cuenta conjuntamente con las del “MANUAL DEL USU­ARIO” - Sección 2”.

A.E.B. Industriale Srl Via Brodolini, 8 Località Crespellano 40053 VALSAMOGGIA BOLOGNA (ITALIA)
Tel [phone] Fax [phone] www.dbtechnologies.com [e-mail]

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a4ti

CH2

Thank you for choosing a dBTechnologies Product!

A4TI is a powerful 4 channel class D amplier (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 ampliers network.
It can cover a wide range of applications, expecially in xed installations.

PACKING CONTENT

• A4TI amplier

• mains cable (VDE connector)

• this quickstart and warranty documentation

REAR PANEL

1. VDE connector with fuse

2. CH1, CH2, CH3, CH4 4-poles speakON outputs

3. Balanced CH3 and CH4 inputs (XLR connector) with Link outputs

4. Balanced CH3 and CH4 inputs (XLR connector) with Link outputs

5. Sensitivity selector for CH3-CH4 inputs

6. LINK MODE selector

7. CH3-CH4 MODE selector

8. Sensitivity selector for CH1-CH2 inputs

9. CH1-CH2 MODE selector

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.

FRONT PANEL

10. CH1, CH2, CH3, CH4 level knobs

11. CH1, CH2, CHH3, CH4 meters

12. Power switch

PROTECT

LIMITER

-5dB

-10dB

-20dB

SIGNAL

ON

- Lights at the action of all the protection circuits

- Lights when compression/limiter is protecting the amplier

- 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 amplier turn on

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INPUT SENSITIVITY / OUTPUT MODE / LINK MODE

a4ti

The user can select the input sensitivity, the output mode of the amplier 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 amplier 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.

FIRST TURN ON

• Connect the passive loudspeakers, using cables with speakON connectors (2 outputs), depending on

impedance, max rated power, amplier mode, link mode. Select the amplier 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 amplier.

• Set the level knobs (10) to the minimum level.

• Connect the mains cable (socket 1), turn on the amplier (12).

• Adjust the gain controls (8, 9), while the audio signal comes from your source.

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MAIN TECH SPECS

Type: Class D amplier

Output Power:

8 Ω stereo* 500 W x 4

a4ti

4 Ω stereo**

8 Ω bridge**

750 W x 4

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

* 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.

Scan with your QR reader App to

download the complete user manual.

This product is suitable for usage up to an altitude of 2000 m.

Check the complete user manual on www.dbtechnologies.com for further information about the system and available
accessories.

Features, specication 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.

420120319Q REV. 1.4