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Location: Oxford
Ships to: US,
Item: 193387509500

Return postage will be paid by:Buyer
Returns Accepted:Returns Accepted
After receiving the item, your buyer should cancel the purchase within:30 days
Return policy details:If you wish to return a product purchased from us, you may do so within 7 days of receiving the product. Please include the auction item number to enable us to trace the order. You are liable for all return carriage costs in relation to returns / cancellations. We will refund the price of the product but not original carriage charges.

Products returned for credit must be in unopened original packaging with no damage to the boxes or equipment. Items returned for credit that have been opened, used or with any damage to internal packaging/wrapping will be subject to a minimum 15% handling charge. Items returned for credit that have been tested, trialed, or used will be subject to a minimum 25% handling charge. Any items returned with packing missing/damaged or any other contents, such as looms, remote controls, instruction manuals will also be charged to the customer.

Please be aware that it is your responsibility to ensure the security and integrity of all packages/items you send back to us. If items are lost/damaged during transit you will be liable for all costs incurred. For this reason, we strongly suggest you ship via a traceable method and pack all items securely.
Impedance:4 Ω / 2 Ω
Amplifier Type:Multi-Channel
MPN:SR 4.500
Number Of Channels:4-Channel
Features:Adjustable High Pass Filter,Adjustable Low Pass Filter
RMS Power:900W
Manufacturer Part Number:SR 4.500
Channels:4 Channel
Audison:Audison

Audison SR 4.500 900W Class D 4 Channel Car Speaker AmplifierHIGH POWER IN A COMPACT SIZE We are proud to present the renovated SR 4.500 (130 W x 4 @ 4Ω) introduced back in 1988 and constantly updated with the best technologies available. 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 aluminium 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 aluminium 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. 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:o Fullo Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.o Lo-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.· Rear Ch Filters:o Fullo Hi-pass: 50 ÷ 3.2k Hz @ 12 dB/Oct.o 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· Max size W x H x D (mm/inch) 264 x 155 x 47,5 / 10.39 x 6.10 x 1.87· Weight (kg/lbs) 2,12 / 4.67 FREE DELIVERY ON THIS ITEM TO ALL UK MAINLAND ADDRESSES. Please note: Unless otherwise indicated, delivery to the Non-UK mainland postcodes will incur an additional surcharge of +£10. This includes the following areas: Jersey, Guernsey, Isle of Man, Isle of Wight, N. Ireland, Shetlands. Please add £10 to your PayPal payment to avoid shipping delays.

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