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Audison

Audison SR4.500 4-Channel D-Class Amplifier

Regular price $549.99 USD
Regular price $604.99 USD Sale price $549.99 USD
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We are proud to present the renovated Audison SR 4.500 (130 W X 4 @ 4Ω) 4 Channel D-Class Amplifier introduced back in 1988 and constantly updated with the best technologies available.

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The Audison design team, headquartered in the Potenza Picena (Italy), spent a long time planning and perfecting the new SR line, taking full advantage of the features that the most recent amplification devices available today are equipped with. After numerous listening tests in a double-blind configuration on a significant sample of professionals and enthusiasts, the R&D team decided to adopt a new D-class technology called ADT (Audison D-Class Technology) for the whole range, which made it possible to reduce the size of the amplifiers considerably, totally preserving the audio performance that characterize each Audison project.


EDGELESS DESIGN
As for the electronics design, the Audison style center has taken care of every aesthetic and functional detail, obtaining a compact amplifier made of extruded aluminum with rounded corners that ease the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, internal cooling fans are not necessary, which are often cause of noise and dust accumulation.


COMPLETE CONTROLS ON UPPER PANEL
As per tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any type of audio system configuration. The controls, protected by a satin-finish aluminum panel, are located on the amplifier upper panel, to be easily reached from above even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded.

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Thanks to the integration of Audison USS technology (Universal Speakers Simulator) in the high-level inputs, the SR amplifiers can also be appropriately connected to OEM sources featuring the “speaker load detection” function that monitor the presence of a low-impedance load to enable audio outputs.


LIMITLESS CONNECTIVITY


All models are equipped with high-level balanced inputs for connection to the OEM Head Unit speakers output and low RCA level for the after-market ones. When the high level input is used, the ART function (Automatic Remote Turn-On / Off) can be enabled to control the switching on of the amplifiers with the head unit switch-on button.
In addition, there is a remote IN / OUT socket to allow the control of multiple cascaded amplifiers switch on when required.
The SR 1.500, SR 4.300 and 4.500 models recreate the PRE-OUT signal by using the Speaker-IN input to interface it with OEM sources only equipped with amplified outputs, allowing the system expansion.


POWER SUPPLY

  • Power supply voltage / fuse 11 ÷ 15 VDC / 2 x 25A
  • Operating power supply voltage 6.5 ÷17 VDC
  • Idling current 1.7 A
  • Idling current when off 0.09 mA
  • Consumption @ 14.4 VDC, 2Ω, Max Musical
  • Power 40 A
  • Remote IN 6.5 ÷ 15 VDC (1 mA)
  • Remote OUT 6.5 ÷ 15 VDC (150 mA)
  • ART - Automatic Remote Turn on/off from
  • OUTPUT BTL speakers (Selectable) 1.5 ÷ 7 VDC

AMPLIFIER STAGE

  • Distortion - THD @ 1 kHz, 4Ω, 70% Rated Power 0.08 %
  • Damping factor @ 1 kHz, 4Ω, 2 VRMS 200
  • Bandwidth @ -1.5 dB 10 Hz ÷ 35 kHz
  • S/N ratio (A weighted @ 1 V Input) 105 dBA
  • Pre-In sensitivity 0.2 ÷ 5 VRMS
  • Speaker-In sensitivity 0.8 ÷ 20 VRMS
  • Minimum load impedance
  • @4Ch: 2Ω
  • @ 3Ch: 2Ω + 2Ω + 4Ω
  • @ 2Ch: 4Ω

OUTPUT POWER (RMS) @14.4 VDC, 1% THD:

  • 4Ch 130 W x 4 (4Ω)
  • 4Ch 220 W x 4 (2Ω)
  • 3Ch 120 W x 2 (4Ω) + 480 W x 1 (4Ω)
  • 3Ch 220 W x 2 (2Ω) + 440 W x 1 (4Ω)
  • 2Ch 450 W x 2 (4Ω)
  • INPUTS / OUTPUTS
  • Inputs Pre-In / Speaker-In
  • Outputs PRE OUT full range (Input A)
  • Front Ch Filters:
  • Full
  • Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
  • Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
  • Rear Ch Filters:
  • Full
  • Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
  • Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.
  • A/B Ch MONO IN (on/off) Yes
  • Bass Boost 50Hz (adjustable) B Ch (0 ÷12) dB

SIZE

  •  W x H x D : 10.39" x 6.10" x 1.87"

    Shipping & Returns

    Shipping: Standard transit time for most shipments is 1-5 business days once shipped, depending on location of warehouse we ship your order from.

    Returns: item must be in BRAND NEW never powered up or turned on or mounted condition. No components missing (i.e. original packaging, screws, bass knobs, plastic coverings, protective films, serial numbers, tags, stickers, and other manufacturer labels removed or tampered with etc.) Failure to meet any of these requirements will result in denial of return refund. Any product returned for any reason must be returned in its original and serial number matching box. Shipping & handling charges are non-refundable. All refunds will be computed based on the unit cost. Products purchased with “Free Shipping” will have the UPS or USPS Rate deducted from their refund.

    Dimensions