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SR4,500
Technical Highlights
- Four-channel amplifier, 130 W x 4 @ 4Ω, 220 W x 4 @ 2Ω.
- Impedance 2Ω for 4 channels, crossover integrated.
- RMS power 880 W, high-quality compact design.
- More technical details
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Compatible with SR4,500
SR4,500 by Audison
Audison SR 4.500 is a 4-channel Class D amplifier with a total power of 880 W and output powers of 130 W x 4 at 4 Ω and 220 W x 4 at 2 Ω. The minimum impedance is 2 Ω in 4-channel operation and 4 Ω in 2-channel operation. The integrated Crossover covers 50–3.2 kHz with 12 dB/oct. for high-pass and low-pass. There are Pre-In and Speaker-In with input sensitivities of 0.2–5 VRMS and 0.8–20 VRMS, respectively. Features include PRE OUT Full Range, ART Automatic Remote On/Off, Remote IN/OUT, and built-in USS. Controls include Bass Boost on channel B (0–12 dB) and Sub-CH level from −20 to +6 dB; optional VCR-S1 remote control for subwoofer level −20/+6 dB. The housing has rounded corners and generous heat sinks without internal fans. Bandwidth is 10 Hz–35 kHz, S/N ratio A 105 dBA, damping factor 200. Power supply is 11–15 VDC with 2 x 25 A Fuses, weight 2.12 kg; dimensions A 264 mm, B 234 mm, C 155 mm, D 135 mm, E 47.5 mm.
- 4-channel amplifier
- Class D
- Total RMS power 880 W
- Integrated, adjustable Crossover 50–3.2 kHz at 12 dB/oct.
- Pre-In and Speaker-In
- PRE OUT Full Range (Input A)
- ART Automatic Remote On/Off
- Built-in USS (Universal Speakers Simulator)
- Remote IN/OUT
- Balanced high-level inputs
- Low-Level RCA
- Bass Boost channel B 0–12 dB
- Sub-CH level −20 to +6 dB
- Optional VCR-S1 remote control for subwoofer level −20/+6 dB
- Rounded corners for space reduction
- Generous heat sinks, no internal fans
- Supply voltage 11–15 VDC
- Fuse 2 x 25 A
- Operating voltage of power supply 6.5–17 VDC
- Idle current 1.7 A
- Idle current when off 0.09 mA
- Power consumption at 14.4 VDC, 2 Ω, maximum music power 40 A
- Remote OUT 6.5–15 VDC (150 mA)
- Remote IN 6.5–15 VDC (1 mA)
- ART switching threshold 1.5–7 VDC
- Distortion THD @ 100 Hz, 4 Ω, 70% rated power 0.08 %
- Bandwidth 10 Hz–35 kHz
- S/N ratio A 105 dBA
- Damping factor 200
- Input sensitivity Pre-In 0.2–5 VRMS
- Input sensitivity Speaker-In 0.8–20 VRMS
- Output power (RMS) @ 14.4 VDC, 1% THD: 130 W x 4 (4 Ω)
- Output power (RMS) @ 14.4 VDC, 1% THD: 220 W x 4 (2 Ω)
- Output power (RMS) @ 14.4 VDC, 1% THD: 120 W x 2 (4 Ω) + 480 W x 1 (4 Ω)
- Output power (RMS) @ 14.4 VDC, 1% THD: 220 W x 2 (2 Ω) + 440 W x 1 (4 Ω)
- Output power (RMS) @ 14.4 VDC, 1% THD: 450 W x 2 (4 Ω)
- CEA output power @ 4 Ω, 1% THD+N, 14.4 V: 125 W x 4
- CEA S/N ratio (ref. 1 W output) 83 dBA
- Minimum impedance (4-channel) 2 Ω
- Minimum impedance (3-channel) 2 Ω + 2 Ω + 4 Ω
- Minimum impedance (2-channel) 4 Ω
- Crossover front Hi-Pass 50–3.2 kHz @ 12 dB/oct.
- Crossover front Lo-Pass 50–3.2 kHz @ 12 dB/oct.
- Crossover rear Hi-Pass 50–3.2 kHz @ 12 dB/oct.
- Crossover rear Lo-Pass 50–3.2 kHz @ 12 dB/oct.
- Ch A/B Mono In (on/off) Yes
- PRE OUT Full Range (Input A)
- Weight 2.12 kg
- Dimension A 264 mm
- Dimension B 234 mm
- Dimension C 155 mm
- Dimension D 135 mm
- Dimension E 47.5 mm

