High-Power, Compact Design & Extruded Aluminium Chassis!

SR 1.500 1-Ohm Stable Mono Amplifier
The Audison SR 1.500 Amplifier is for the SR Line of Audison, featuring high-power amplifiers with a compact design. The amplifier is 1 ohm stable and has the following outputs: SR 1.500 compact design and extruded aluminium chassis with rounded corners, making it easy to install in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifier, internal cooling fans are not necessary, which are often the cause of noise and dust accumulation.

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's 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.

All SR models are equipped with high-level balanced inputs for connection to the OEM Head Unit speakers output and low RCA levels 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 to switch on when required. The SR 1.500 recreates 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.

Features:

• ADC (Audison D-Class) Technology 1 Ohm stable output stage ensuring high audio performance in a compact size
• Extruded aluminium compact design with fanless convection cooling system
• Built-in USS (Universal Speakers Simulator)
• Balanced high-noise rejection input speaker-In (for OEM head units) and RCA-In (for Aftermarket head units) inputs
• ART (Automatic Remote Turn-On/Off) automatically turns on/off the amplifier when the OEM head-unit turns on/off (can be enabled/ disabled, with Speaker-In inputs)
• Pre-outs are also available when using Speaker-In level inputs
• 5 ch/3 ch operation mode (selectable), to create a five-channel system (with sub), or a powerful sub + front three-channel system
• Bass Boost (50 Hz) adjustable to 12 dB, to increase the subwoofer punch
• Lo-Pass and Hi-Pass 12 dB adjustable (50 Hz to 3200 Hz) filters, providing the ability to build a front + rear system, a multichannel woofer + tweeter system, or a powerful sub + front system
• 24 dB continuous adjustable (50 to 500 Hz) Lo-Pass subwoofer filter
• SUBSONIC filter (24 dB - 25 Hz), removes very low subsonic frequencies from music signals to avoid damage to the subwoofer

Specifications:

Amplifier

• Type: D-Class
• Channels: 1
• Output Power (RMS) @14.4 VDC, 1% THD:
  • 500W x 1 (4 Ohm) (CEA Compliant)
  • 800W x 1 (2 Ohm)
  • 1000W x 1 (1 Ohm)
• Distortion - THD @ 100Hz, 4 Ohm, 70% Rated Power: 0.1%
• Damping Factor @ 100Hz, 4 Ohm, 2 VRMS: > 300
• Bandwidth @ -3 Db: 10Hz - 500 Hz
• S/N Ratio (A-Weighted @ 1 V INPUT): 100dBA
• Pre-In Sensitivity: 0.2 - 5VRMS
• Speaker-In Sensitivity: 0.8 - 20VRMS
• Minimum Load Impedance: 1 Ohm

Power Supply

• 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 @14.4VDC, 2 Ohm, Max Musical Power: 40A
• Remote In: 6.5 - 15 VDC (1mA) / Remote Out: 6.5 - 15 VDC (150mA)
• ART - Automatic Remote Turn On/Off from Output BTL Speakers (Selectable): 1.5 -7 VDC

Inputs/Outputs

• Inputs: Pre-In / Speaker-In
• Pre-Out Hi-Pass Filtered: 50 - 250Hz @ 12 dB/Oct.
• Filters:
  • Full
  • LP 50 - 250Hz @ 24 dB/Oct.
• Phase: (0 - 180) Degree
• Bass Boost 50Hz (Adjustable): (0-12) dB
• Subsonic (On/Off): 25 Hz @ 24 dB/Oct.
• Sub Volume Remote Control: (-20 - 6) dB

Dimensions

• Size: (W) 264mm x (H) 155mm x (D) 47.5mm
• WEIGHT: 2.23kg