SUNDOWN AUDIO SFB-500.4v2 : (Full Range 4ch)
Introducing the “Sundown Full Bridge” line of amplifiers, “SFB” for short. These amps pack a huge punch in a fairly small footprint. Due to the full bridge technology, these amplifiers are not strappable however you can line up multiple amps together to create a massive powerhouse in the same, if not smaller, footprint of your standard half bridge predecessors for a fraction of the cost.
All of the SFB 4ch amp’s power ratings are listed at the 1ohm rating. For instance, the SFB-500.4 is 500Wrms at 1ohm per channel. This allows you to run many more speakers together in a multitude of different wiring configurations than using a standard Class A/B/D half bridge design. These are the perfect amplifiers for large systems where you have a plethora of pro drivers in multiple doors or line arrays.
Features:
- High Efficiency Digital Multi-Channel Design
- 12 dB/Octave – Variable Low Pass Filter
- 12 dB/Octave – Variable High Pass Filter
- Variable Bass Boost
- Clipping Indicator
- 4 Way Protection Ciruit (Thermal, Voltage, Speaker Short, DC Offset)
- Optional Wired Remote Control with Clipping Indicator
Specifications:
1 ohm RMS 500W / CH
2 ohm RMS 300W / CH
4 ohm RMS 200W / CH
Recommended Fuse Rating 180A
Low Pass Filter (Variable) 50Hz-6kHz
High Pass Filter (Variable) 15Hz-6kHz
Bass Boost @ 50Hz 0-12dB
Input Sensitivity 5V Max
S/N Ratio 100dB
Working Voltage 10.5v-15.5v
Dimensions 8.25″ x 9.75″ x 2.75″
| Specification | Details |
|---|---|
| Model | SFB‑500.4v2 (Full Bridge, Full‑Range) |
| UPC | 810111132947 |
| Power Ratings (RMS) | 500 W × 4 @ 1 Ω; 300 W × 4 @ 2 Ω; 200 W × 4 @ 4 Ω |
| Dimensions | 8.25″ W × 9.75″ D × 2.75″ H |
| Recommended Fuse | 180 A |
| Filters | Variable 12 dB/Oct LPF (50 Hz–6 kHz); Variable 12 dB/Oct HPF (15 Hz–6 kHz) |
| Bass Boost | 0–12 dB at 50 Hz |
| Filters & Controls | Clipping Indicator; Optional wired remote; Input Sensitivity 0.5–8 V |
| Protection Circuitry | Thermal, Voltage, Short, DC Offset |
| S/N Ratio | ~100 dB |
| Voltage | 10.5 – 15.5 V working range |
| Frequency Range | ~10 Hz – 20 kHz (±3 dB) |
