Audison SR 4.300 Version 2 - 4-channel amplifier

Amplifier | 520W | 4×85W | D class

Audison SR 4.300 4-channel amplifier with crossover and great power in ultra-compact dimensions (85 W x 4 4Ω)SR line, perfected by taking full advantage of the capabilities of the latest amplifier devices.
After numerous listening tests with professionals and enthusiasts, Audison's research and development team decided to use a new Class D technology called ADT (Audison D-Class Technology) for this line of amplifiers, which has made it possible to significantly reduce the dimensions without compromising audio performance that characterizes every Audison design.
As far as the electronic design is concerned, every aesthetic and functional detail of the Audison SR 4.300 has been taken into account, resulting in a compact amplifier made of extruded aluminum with rounded corners, making it easier to install the product in tight spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, it is possible to eliminate the need for internal fans, which often cause noise and dust accumulation.
In keeping with tradition, the SR amplifiers confirm their vocation for versatility by having one on all models Complete filter section included, suitable for any type of audio system configuration.
The controls, protected by a satin aluminum plate, are located on the top of the amplifier, making them easily accessible from above even after the product has been installed. Audison USSDThanks to the integration of Audison USS (Universal Speakers Simulator) technology into the high-level inputs, the SR amplifiers can also be conveniently connected to OEM sources equipped with the "Speaker Load Detection" function, which detects the presence of a low-impedance load monitored and the audio outputs activated.Audison SR 4.300 enables a wide range of connection options. All models have symmetrical high-level inputs for connection to the OEM speaker output of the head unit and a low-level RCA input for retrofit speakers. When using the high level input, the ART (Automatic Remote On/Off) function can be activated to control the power on of the amplifier via the main unit's power button. In addition, there is a remote IN / OUT jack that allows control of multiple amplifiers in cascade, which turn on when needed. The PRE-OUT signal via the Speaker IN jack makes it possible to connect the amplifier with OEM Connect sources that only have amplified outputs, allowing system expansion.

AMPLIFIER SPECIFICATIONS

Channels:  4
Amplifier class: D-Class
Hi Level Input:  Yes
Low Level Input:  Yes
Digital Input: No
Supply voltage / fuse:  11 ÷ 15 VDC / 1 x 30A
Power supply operating voltage:  6.5V ÷17 VDC
No-load current:  1.6 A
No-load current when switched off:  0.03 mA
Power consumption @ 14.4 VDC, 2Ω, Max music power:  25 A
Remote OUT:  6.5 ÷ 15 VDC (150 mA)
Remote IN:     6.5 ÷ 15 VDC (1 mA)
ART - Automatic on and off with OUTPUT BTL speaker (selectable):  1.5 ÷ 7 VDC

AMPLIFIER SECTION

Distortion - THD @ 100 Hz, 4Ω, 70% Rated power:  0.03%
Bandwidth A:  10Hz ÷ 35 kHz
S/N ratio A: 100 dBA
Attenuation factor A:  150
Input sensitivity Pre-In:  0.2 ÷ 5 VRMS
Input sensitivity Speaker-In:  0.8 ÷ 20 VRMS< br />Total power RMS:  520 W

Minimum impedance: 

• @4Ch: 2Ω
• @ 3Ch: 2Ω + 2Ω + 4Ω
• @ 2Ch: 4Ω

Output power (RMS) @14.4 VDC, 1% THD: 

• 4Ch 85W x 4 (4Ω)
• 4Ch 130W x 4 (2Ω)
• 3Ch 80W x 2 (4Ω) + 250W x 1 (4Ω)
• 3Ch 130W x 2 (2Ω) + 260W x 1 (4Ω)
• 2Ch 250W x 2 (4Ω)

Adjustable crossover Yes

CEA SPECIFICATIONS

Output power @ 4Ω, 1% THD+N, 14.4 V: Output power @ 4Ω, 1% THD+N, 14.4 V: 75 W x 4 Ch
SN ratio (ref. 1W output) :          SN ratio (ref. 1W output): 82 dBA

INPUTS

Input Type:  Pre-In / Speaker-In
Filters Outputs:  PRE OUT full range (Input A)
Filter Pass A:  Ch Filters : - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
Filter Pass B:      Ch Filters: - Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
Filter Pass C:   Ch Filters: - Full Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct .
Filter Pass D:   Ch Filters: - Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
Channel Mono :    A/B Ch MONO IN (on/off) Yes
Input/Output Bass Boost:  B Ch (0 ÷12) dB

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Weight:  1.56 kg