SR 1D - Audison Monoblock 640W RMS Power Amplifier with Crossover

• Nominal power (RMS) @12 VDC; 1% THD :
• 4 Ch @ 4 Ω 200 W x 1
• Output power (RMS) @14.4 VDC; 1% THD:
• 1 Ch @ 4 Ω 280 W x 1
• 1 Ch @ 2 Ω 460 W x 1
• 1 Ch @ 1 Ω 640 W x 1
• Dimensions WxHxD (inches): 8”7/16 x 2”1/8 x 11”3/8
• PRE-OUT pass-through from high level SPEAKERS-IN input
• Removable panel to hide and protect controls
• Monoblock aluminium heatsink construction
• Fanless convection cooling system
• Strip fuse located on the control panel for easy replacement
• Connections: Power supply terminals accepts 7 mm diameter (4 AWG) cable, Speaker terminals accepts 4.5 mm diameter (8 AWG) cables, Hi Level speaker and remote turn-on terminals equipped with removable connectors with screw fastening
• “D” class topology, delivering 280W at 4 ohms and 640W power at 1 ohm
• Phase control switch
• Selectable Subsonic Filter
• Bass Boost Filter
• Continuosly adjustable LO-pass 24dB

Power Supply:

• Power supply voltage: 11÷15 VDC
• Idling current: 1 A
• Switched off: <0.01 mA
• Remote IN voltage: 7÷15 VDC (1 mA)
• Remote OUT voltage: 11÷15 VDC (15 mA)
• Internal fuse (AFS): 40 A
• Consumption @ 14.4 VDC, 1 Ω,
• Max Musical Power: 33 A

Amplifier Stage:

• Distortion - THD (100 Hz @ 4 Ω): 0.3 %
• Bandwidth (-3 dB): 18 ÷ 500 Hz
• S/N ratio (A weighted, 1 V): 90 dB
• Damping factor (100 Hz @ 4 Ω): 150
• Input sensitivity (PRE IN): 0.3 ÷ 5 VRMS
• Input sensitivity (Speaker In): 1 ÷ 15 VRMS
• Input impedance (PRE IN): 15 kΩ
• Input impedance (Speaker In): 100 Ω
• Load impedance (Min):
• 1 Ch 1 Ω

Input/Filters:

• Inputs Pre IN / Speaker IN
• Output Pre
• Filter LO-pass: 50 ÷ 500 Hz @ 24 dB/oct
• Subsonic 25 Hz @ 24 dB/oct
• Boost + 6 dB; + 3 dB; OFF / @ 45 Hz
• Phase Control 0° - 180°
• Weight: 7LB

Manual