Product News
SR2-4500 Home Theater Feedback: High Power, Ultra-Quiet
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Update time : 2026-08-18 17:37:40
Power or Silence? With the SR Series, You Never Have to Choose
A great home theater never tries to "replicate the show" — it brings the energy of the stage home, and keeps the purity of the studio. To do that, an amplifier must deliver both: abundant power, and silent operation. Yet on the market, the powerful ones roar, and the quiet ones fall flat in the low end. Power or silence: must you really choose? The new SR Series from Sinbosen says no.Although the SR Series uses advanced digital amplifier technology, its sound character remains remarkably close to the powerful and dynamic performance of traditional FP-series switching power amplifiers — delivering deep, punchy bass and strong overall energy, while achieving lower heat generation and higher efficiency.
Compared with conventional FP-style amplifiers, the SR Series also provides significantly improved stability. It operates reliably at 1.5Ω–2Ω loads, and can even handle extreme 1Ω conditions in demanding applications. The protection system and robust circuit design offer exceptional durability, making the amplifier highly resistant to overload and short-circuit situations.
Compared with traditional D-Series digital amplifiers, the SR Series delivers: stronger and more powerful low frequencies; better speaker control; fuller and more musical sound character; improved overall sound quality; more dynamic and energetic performance.
The SR Series successfully combines the efficiency of modern digital amplifiers with the powerful sonic performance traditionally associated with high-end touring amplifiers.
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In May 2026, the SR Series amplifiers — SR4-3200, SR2-4500, and SR4-1800 — made their public debut at Prolight + Sound Guangzhou, quickly becoming one of the highlights of the show with their distinctive "high power × ultra-quiet" positioning.
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Model
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Output Power
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4 × 3200W / 8Ω (RMS)
4 × 5500W / 4Ω (RMS) 4 × 6000W / 2Ω (RMS) 4 × 7000W / 2Ω (20ms burst) |
2 × 4500W/8Ω (RMS)
2 × 8000W/4Ω (RMS) 2 × 7000W/2Ω (RMS) 2 × 8500W/2Ω (20ms burst) |
4 × 1800W/8Ω (RMS)
4 × 3000W/4Ω (RMS) 4 × 3800W/2Ω (RMS) 4 × 5600W/2Ω (20ms burst) |
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Frequency Response:
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20Hz–20kHz, +0/-1dB
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Total Harmonic Distortion (THD):
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<0.5%, 20Hz–20kHz
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Intermodulation Distortion (IMD):
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<0.05%
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Slew Rate:
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50 V/µs @ 8Ω
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Damping Factor:
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>1000 @ 20–200 Hz
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Signal-to-Noise Ratio (SNR):
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>110dB
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Gain Selection:
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32dB / 35dB / 38dB / 41dB
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Chassis
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2U Chassis
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Client Feedback: SR2-4500 Driving a 24-Inch Beast
After the show, genuine customer feedback followed. One home theater enthusiast integrated the SR2-4500 into his system to drive a Stereo Integrity HS-24 — a 24-inch subwoofer rated at 3000W RMS.
This pairing is an extreme test. With 40mm of one-way linear excursion, over 120mm of peak-to-peak stroke, and a resonant frequency around 16Hz, the 24-inch driver demands relentless power and tight control. And in a home theater, where you sit only meters away, amplifier fan noise is magnified to the point of ruining the experience.
The SR2-4500 passed with flying colors — in the customer's words, the SR Series' strengths are "fully unleashed" in a home theater setting.
Why the SR2-4500 Is the Top Pick for Home Theater?
The first rule of immersive cinema: hear the film, not the gear. The SR2-4500 rewrites the "high power must be loud" rule at the source — less heat means the fans never have to roar.①Hero Feature: Ultra-Quiet Designa. Independent Channel Thermal Tracking — each channel's temperature is monitored in real time, cooling exactly where and when needed. No wasted fan speed, no wasted noise.b.Automotive-Grade 4-Pin SiC MOSFETs — automotive-grade silicon carbide devices tolerate high temperatures with lower losses, cutting heat at its very source. c. Tunnel Cooling System + High-Power Silent Fans — a through-tunnel airflow path moves more heat at lower fan speeds: quiet and efficient, never one at the expense of the other.Patented circuit topology dramatically improves thermal efficiency — no excess heat, no noise problem. Whisper-quiet cooling for undisturbed cinema viewing. |
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And it goes far beyond silence — every spec deserves the spotlight:② Ultra-Low Bass at 10Hz / 15Hz — Bass You Feel, Not Just HearReaching 10Hz @ 8Ω and 15Hz @ 4Ω, the SR2-4500 delivers tactile, subsonic impact.
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More Than Home Theater: One Amplifier, Every Stage
If home theater showcases the SR Series' bass and silence, remember — that's only the beginning. The SR Series is built as a true all-rounder: from living room to stage, from nightclub to stadium, one platform covers every scenario.
Scenes beyond the living room:
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Application
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What the SR Series Brings
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Touring & Live Events
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Pro-grade 2Ω stability and extreme low-impedance drive handle multi-speaker parallel setups and high-dynamic output
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Bar / Nightclub / Livehouse
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Punchy deep bass, running cool and reliable through long, high-load nights
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Theater / Stadium / Fixed Installation
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Wide-voltage tolerance and modular maintenance keep long-term operating costs down
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Six pro-grade traits behind the "all-rounder" claim:
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Six models, each with its own role:
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Model
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Channels / Power (8Ω)
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Suggested Applications
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SR4-3200
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4 × 3200W
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Large touring productions, line-array mains, festivals, stadiums
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SR4-1800
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4 × 1800W
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Bars / livehouses, mid-size events, distributed sound in multipurpose halls
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SR2-4500
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2 × 4500W
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Subwoofer systems, home theater subwoofers, parallel 2Ω multi-sub setups
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SR4-3200 DSP
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4 × 3200W + ALLDSP
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System-tuned touring and installs (crossover / delay / EQ)
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SR4-1800 DSP
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4 × 1800W + ALLDSP
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Multi-zone theater and stadium installs, system integration
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SR2-4500 DSP
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2 × 4500W + ALLDSP
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Cinema bass management, subwoofer array tuning, touring sub systems
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sales2@sinbosen.com