--> <div class="wpb-content-wrapper"><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <h3 class="product_title entry-title"><span style="color: #3366ff;">Audison </span>SR 1.500 Amplifier</h3> <div class="audi--product-description-paragraph"> <div class="float-start w-100 audi--product-description"> <div class="audi--product-description-paragraph truncated"> <div class="float-start w-100 audi--product-description"> <div class="audi--product-description-paragraph truncated"> <p>The Audison SR 1.500 is a 1-ohm stable mono amplifier with a built-in crossover featuring compact dimensions and an impressive RMS power of 1000 W.</p> </div> </div> </div> </div> </div> </div> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div> <div class="wpb_single_image wpb_content_element vc_align_center wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img decoding="async" class="vc_single_image-img " src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/07/Audison_SR-1_500-R02_PANNELLO-800x500.webp" width="800" height="500" alt="Audison_SR-1_500-R02_PANNELLO" title="Audison_SR-1_500-R02_PANNELLO" loading="lazy" /></div> </figure> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_tta-container" data-vc-action="collapseAll"><div class="vc_general vc_tta vc_tta-accordion vc_tta-color-sky vc_tta-style-classic vc_tta-shape-rounded vc_tta-spacing-1 vc_tta-controls-align-center vc_tta-o-all-clickable"><div class="vc_tta-panels-container"><div class="vc_tta-panels"><div class="vc_tta-panel" id="1731678339268-3908876b-3c97" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678339268-3908876b-3c97" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">AMPLIFIER TECH DATA</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Channels</td> <td>1</td> </tr> <tr> <td>Class</td> <td>D-Class</td> </tr> <tr> <td>Hi Level Input</td> <td>Yes</td> </tr> <tr> <td>Low Level Input</td> <td>Yes</td> </tr> <tr> <td>Digital Input</td> <td>No</td> </tr> <tr> <td>Power supply voltage / fuse</td> <td>11 ÷ 15 VDC / 2 x 35A</td> </tr> <tr> <td>Operating power supply voltage</td> <td>6.5 ÷17 VDC</td> </tr> <tr> <td>Idling current</td> <td>0.8 A</td> </tr> <tr> <td>Idling current when off</td> <td>0.02 mA</td> </tr> <tr> <td>Consumption @ 14.4 VDC, 1Ω, Max Musical Power</td> <td>40 A</td> </tr> <tr> <td>Remote OUT</td> <td>6.5 ÷ 15 VDC (150 mA)</td> </tr> <tr> <td>Remote IN</td> <td>6.5 ÷ 15 VDC (1 mA)</td> </tr> <tr> <td>ART – Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable)</td> <td>1.5 ÷ 7 VDC</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1731678339280-69f54a1e-1809" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678339280-69f54a1e-1809" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">AMPLIFIER STAGE</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Distortion – THD @ 100 Hz, 4Ω, 70% Rated Power</td> <td>0.1 %</td> </tr> <tr> <td>Bandwidth A</td> <td>(-3 dB, 2 VRMS, 4 Ω): 10Hz ÷ 500 Hz</td> </tr> <tr> <td>S/N ratio A</td> <td>(A weighted @ 1 V): 100 dBA</td> </tr> <tr> <td>Damping factor A</td> <td>> 300</td> </tr> <tr> <td>Input sensitivity Pre-In</td> <td>0.2 ÷ 5 VRMS</td> </tr> <tr> <td>Input sensitivity Speaker-In</td> <td>0.8 ÷ 20 VRMS</td> </tr> <tr> <td>Total Power RMS</td> <td>1000 W</td> </tr> <tr> <td>Minimum load impedance</td> <td>1Ω</td> </tr> <tr> <td>Output Power (RMS) @14.4 VDC, 1% THD</td> <td>1Ch 500 W x 1 (4Ω)</p> <p>1Ch 800 W x 1 (2Ω)</p> <p>1Ch 1000 W x 1 (1Ω)</td> </tr> <tr> <td>Adjustable Crossover</td> <td>No</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1731678446080-6fc22c80-5ea1" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1731678446080-6fc22c80-5ea1" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">CEA SPECIFICATIONS</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Output power @ 4Ω, 1% THD N, 14.4 V</td> <td>500 W x 1 Ch</td> </tr> <tr> <td>SN ratio (ref. 1W output)</td> <td>75 dBA</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1732808854610-2353db2a-c9df" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1732808854610-2353db2a-c9df" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">INPUTS</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr> <td>Input Type</td> <td>Pre-In / Speaker-In</td> </tr> <tr> <td>Filters Outputs</td> <td>PRE OUT Hi-Pass filtered 50 ÷ 250Hz @ 12 dB/Oct.</td> </tr> <tr> <td>Filter Pass A</td> <td>Filters: Full LP 50 ÷ 250Hz @ 24 dB/Oct.</td> </tr> <tr> <td>Inputs/Outputs Phase</td> <td>(0 ÷ 180) deg</td> </tr> <tr> <td>Inputs/Outputs Bass Boost</td> <td>(0 ÷12) dB</td> </tr> <tr> <td>Inputs/Outputs Subsonic</td> <td>25 Hz @ 24 dB/Oct.</td> </tr> <tr> <td>Remote Sub Volume</td> <td>(-20 ÷ 6) dB</td> </tr> </tbody> </table> </div> </div> </div></div><div class="vc_tta-panel" id="1732808933437-91690c4a-20eb" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1732808933437-91690c4a-20eb" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">DIMENSIONS</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <table class="table caption-top"> <tbody> <tr class="hz--dimensions-has-image"> <td>Dimension A</td> <td>264 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension B</td> <td>234 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension C</td> <td>155 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension D</td> <td>135 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Dimension E</td> <td>47.5 mm</td> </tr> <tr class="hz--dimensions-has-image"> <td>Weight</td> <td>2.23 kg</td> </tr> </tbody> </table> <div class="col-lg-12 col-12 audi--column-info"> <h4 class="audi--product-tab-title"></h4> <div class="table-responsive-sm"> <table class="table caption-top"> <tbody> <tr class="hz--dimensions-has-image"> <td><a class="float-start mb-5 hz-image-dimensions" href="https://static.audison.com/media/2023/06/Audison_SR_dim-31.png" data-fancybox="product_image_dimensions"><img decoding="async" class="mw-30" src="https://static.audison.com/media/2023/06/Audison_SR_dim-31.png" alt="SR 1.500" /></a></td> </tr> </tbody> </table> </div> </div> </div> </div> </div></div><div class="vc_tta-panel" id="1732808932985-725eb310-777f" data-vc-content=".vc_tta-panel-body"><div class="vc_tta-panel-heading"><h4 class="vc_tta-panel-title"><a href="#1732808932985-725eb310-777f" data-vc-accordion data-vc-container=".vc_tta-container"><span class="vc_tta-title-text">FEATURES</span></a></h4></div><div class="vc_tta-panel-body"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <ul> <li>Elegant and functional design with rounded corners to minimize space, facilitating installation.</li> <li>Built-in USS (Universal Speakers Simulator).</li> <li>Full built-in crossover section.</li> <li>Optional VCR-S1 remote control offers the possibility to adjust the subwoofer level (-20 / 6 dB) to your musical preference.</li> <li>Balanced high-level inputs for connecting to the OEM head unit speaker output</li> <li>Low-level RCA for after-market speakers.</li> <li>ART (Automatic Remote On/Off) function.</li> <li>Remote IN / OUT socket to allow control of multiple amplifiers.</li> <li>PRE-OUT allows for system expansion.</li> </ul> </div> </div> </div></div></div></div></div></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-12"><div class="vc_column-inner"><div class="wpb_wrapper"><div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div></div></div></div></div><div class="vc_row wpb_row vc_row-fluid"><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="124" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/08/Audison_Full_DA-300x124-1.webp" class="vc_single_image-img attachment-medium" alt="" title="Audison_Full_DA-300x124" /></div> </figure> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <div class="float-start w-100 audi--headline-technologies"> <div class="float-start w-100 audi--headline-technologies">ADT – Audison D-Class Technology</div> <div class="float-start w-100 audi--description-technologies audi--color-grey"> <p>Class D amplifiers are also called “switching amplifiers”, since their efficiencies are arrived at by rapid on and off switching of the output transistors. Audison Class D uses a much higher switching frequency than most other amplifiers. You might think the switching frequency for all Class D amps are the same, but Class D chipsets allow significant latitude in many design aspects, such as switching frequency and timing. Most companies use as low a switching frequency as possible – this makes the timing easier to manage, and allows the use of lower-precision components which cost less. ACD uses a switching frequency twice as fast as many other modern Class D amplifiers.</p> </div> </div> <div class="float-start w-100 audi--description-technologies audi--color-grey"> <p> </p> </div> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <p>Higher switching frequencies require incredibly precise timing, which require higher-tolerance components to be used in order to keep the timing pulses from overlapping (that causes catastrophic failure of the output transistor). Audison uses very high-tolerance component parts to keep the timing correct even during temperature extremes (temperature changes shift the values of analog components). To Audison, this is worth the cost, since the higher switching frequency of Audison Class D moves noise much farther away from the audible band. Audison Class D also uses a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude – which is good for controlling EMI and for preventing infrasonic noise getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher – twice as many components are needed for a 4th order filter compared to the usual 2nd-order filter, and each output channel needs its own filter – but Audison determined through exhaustive listening testing that this design was the best-sounding approach.</p> </div> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_single_image wpb_content_element vc_align_left wpb_content_element"> <figure class="wpb_wrapper vc_figure"> <div class="vc_single_image-wrapper vc_box_border_grey"><img loading="lazy" decoding="async" width="300" height="65" src="https://www.audiofile-incar.co.uk/wp-content/uploads/2024/07/Audison_USS-1-.webp" class="vc_single_image-img attachment-medium" alt="" title="Audison_USS-1-" /></div> </figure> </div> </div></div></div><div class="wpb_column vc_column_container vc_col-sm-3"><div class="vc_column-inner"><div class="wpb_wrapper"> <div class="wpb_text_column wpb_content_element" > <div class="wpb_wrapper"> <h4 class="float-start w-100 audi--headline-technologies">USS – Universal Speakers Simulator</h4> <div class="float-start w-100 audi--description-technologies audi--color-grey"> <p>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.</p> </div> </div> </div> <div class="vc_empty_space" style="height: 32px"><span class="vc_empty_space_inner"></span></div><div class="vc_btn3-container vc_btn3-center vc_do_btn" ><a class="vc_general vc_btn3 vc_btn3-size-md vc_btn3-shape-rounded vc_btn3-style-3d vc_btn3-color-sky" href="http://audiofile-incar.co.uk/wp-content/uploads/2024/07/AUDISON_SR_1500_Tech_Sheet-1.pdf" title="">Tech Sheet</a></div></div></div></div></div> </div><!-- Audison SR 1.500 Amplifier The Audison SR 1.500 is a 1-ohm stable mono amplifier with a built-in crossover featuring compact dimensions and an impressive RMS power of 1000 W. AMPLIFIER TECH DATA Channels 1 Class D-Class Hi Level Input Yes Low Level Input Yes Digital Input No Power supply voltage / fuse 11 ÷ 15 VDC / 2 x 35A Operating power supply voltage 6.5 ÷17 VDC Idling current 0.8 A Idling current when off 0.02 mA Consumption @ 14.4 VDC, 1Ω, Max Musical Power 40 A Remote OUT 6.5 ÷ 15 VDC (150 mA) Remote IN 6.5 ÷ 15 VDC (1 mA) ART – Automatic Remote Turn on/off from OUTPUT BTL speakers (Selectable) 1.5 ÷ 7 VDC AMPLIFIER STAGE Distortion – THD @ 100 Hz, 4Ω, 70% Rated Power 0.1 % Bandwidth A (-3 dB, 2 VRMS, 4 Ω): 10Hz ÷ 500 Hz S/N ratio A (A weighted @ 1 V): 100 dBA Damping factor A > 300 Input sensitivity Pre-In 0.2 ÷ 5 VRMS Input sensitivity Speaker-In 0.8 ÷ 20 VRMS Total Power RMS 1000 W Minimum load impedance 1Ω Output Power (RMS) @14.4 VDC, 1% THD 1Ch 500 W x 1 (4Ω) 1Ch 800 W x 1 (2Ω) 1Ch 1000 W x 1 (1Ω) Adjustable Crossover No CEA SPECIFICATIONS Output power @ 4Ω, 1% THD N, 14.4 V 500 W x 1 Ch SN ratio (ref. 1W output) 75 dBA INPUTS Input Type Pre-In / Speaker-In Filters Outputs PRE OUT Hi-Pass filtered 50 ÷ 250Hz @ 12 dB/Oct. Filter Pass A Filters: Full LP 50 ÷ 250Hz @ 24 dB/Oct. Inputs/Outputs Phase (0 ÷ 180) deg Inputs/Outputs Bass Boost (0 ÷12) dB Inputs/Outputs Subsonic 25 Hz @ 24 dB/Oct. Remote Sub Volume (-20 ÷ 6) dB DIMENSIONS Dimension A 264 mm Dimension B 234 mm Dimension C 155 mm Dimension D 135 mm Dimension E 47.5 mm Weight 2.23 kg FEATURES Elegant and functional design with rounded corners to minimize space, facilitating installation. Built-in USS (Universal Speakers Simulator). Full built-in crossover section. Optional VCR-S1 remote control offers the possibility to adjust the subwoofer level (-20 / 6 dB) to your musical preference. Balanced high-level inputs for connecting to the OEM head unit speaker output Low-level RCA for after-market speakers. ART (Automatic Remote On/Off) function. Remote IN / OUT socket to allow control of multiple amplifiers. PRE-OUT allows for system expansion. ADT – Audison D-Class Technology Class D amplifiers are also called “switching amplifiers”, since their efficiencies are arrived at by rapid on and off switching of the output transistors. Audison Class D uses a much higher switching frequency than most other amplifiers. You might think the switching frequency for all Class D amps are the same, but Class D chipsets allow significant latitude in many design aspects, such as switching frequency and timing. Most companies use as low a switching frequency as possible – this makes the timing easier to manage, and allows the use of lower-precision components which cost less. ACD uses a switching frequency twice as fast as many other modern Class D amplifiers. Higher switching frequencies require incredibly precise timing, which require higher-tolerance components to be used in order to keep the timing pulses from overlapping (that causes catastrophic failure of the output transistor). Audison uses very high-tolerance component parts to keep the timing correct even during temperature extremes (temperature changes shift the values of analog components). To Audison, this is worth the cost, since the higher switching frequency of Audison Class D moves noise much farther away from the audible band. Audison Class D also uses a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude – which is good for controlling EMI and for preventing infrasonic noise getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher – twice as many components are needed for a 4th order filter compared to the usual 2nd-order filter, and each output channel needs its own filter – but Audison determined through exhaustive listening testing that this design was the best-sounding approach. USS – Universal Speakers Simulator 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. Tech Sheet
