The DSPPA DA3850 is a single-channel Class-D power amplifier rated at 1500W or more on a 100V line and 750W on a 70V line. It is meant for very large zones with many horn and outdoor speakers on one line, such as yards, factories and car parks.
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The DSPPA DA3850 delivers 1500W or more from a single channel when run on its 100V output (the datasheet labels it 105V), and 750W on the 70V output. That is power for the largest speaker zones: a wide outdoor yard, a factory with several halls, or the perimeter of a commercial complex lined with horn speakers. Instead of installing three or four small amplifiers, one DA3850 can drive one big line.
DSPPA DA3850 power by line voltage
The key point with this model is that output depends on the line voltage selected with the rear switch, so plan around it:
- 100V output: 1500W or more.
- 70V output: 750W.
- Frequency response: 80 Hz to 16 kHz (±3 dB).
- Signal-to-noise ratio: 80 dB or more; THD 1% or less.
- Rated consumption: 2700W on AC 220V.
For example, 45 horn speakers at 30W need 1350W: fine on a 100V line, but beyond the amplifier's 70V rating. If your speakers have 100V taps, run the system at 100V to get the full rating.
Power and airflow for a 2700W draw
A 2700W rated draw calls for a dedicated, properly rated outlet in the equipment room; the unit itself uses an F15AL250V fuse. It measures 483 x 380 x 88 mm and weighs 9.1 kg net. Leave space behind it, since the fan is on the rear panel, with ventilation slots on the front.
Signal input and loop-through
Audio from the mixer enters through a 6.35 mm jack, and the minimum source level is 1000 mV, so line level is what it expects. Matching XLR and 6.35 mm loop sockets send the same program on to another amplifier for a second zone.
Long-line switch and protection
Long cables lose level by the time they reach the last speaker. The long-line switch raises output dynamics to compensate, and its green indicator goes out when engaged. On a very short line with speakers under 30W, use it carefully to avoid damaging them. Protection covers over-temperature, DC on the output and short circuits, with automatic recovery once a short is cleared, and five front LEDs report the amplifier's status.
DA3850 applications in Saudi Arabia
- Outdoor prayer grounds and Eid courtyards with many horn speakers.
- Large factories and warehouses in the industrial cities of Riyadh, Dammam and Jeddah.
- Car parks at malls, towers and commercial complexes.
- Open sports grounds and stadium-style yards.
DA3850 or DA3650?
Both share the chassis and the long-line switch. The DA3650 gives 750W RMS, draws 900W and weighs 7.7 kg net. The DA3850 doubles output on a 100V line to 1500W or more, draws 2700W and weighs 9.1 kg net. On a 70V line, however, the DA3850 drops to 750W, so if your system is 70V only, compare the two carefully before you buy.
Frequently Asked Questions
Does the DSPPA DA3850 give 1500W on any line?
No. Per the datasheet it delivers 1500W or more on the 100V output (listed as 105V) and 750W on the 70V output.
How much power does the DA3850 draw?
Rated consumption is 2700W on AC 220V, so give it a dedicated, properly rated outlet in the equipment room.
Do I need a mixer with the DA3850?
Yes. It is a power amplifier that takes line-level audio. Microphones and music sources go into a mixer or preamplifier such as the DSPPA MP9811P first.
Specifications
- Model: DA3850
- Type: 1-channel Class-D digital power amplifier
- Series: DSPPA DA3850 / DA3950
- Channels: 1
- Rated power (105V output): ≥1500W
- Rated power (70V output): 750W
- Speaker output: 70V and 100V constant voltage with common terminal, rear switch
- Minimum source EMF: ≤1000 mV
- SNR: ≥80 dB
- Frequency response: 80 Hz to 16 kHz (±3 dB)
- THD: ≤1% (1 kHz, normal condition)
- Inputs: 6.35 mm input
- Loop-through: XLR and 6.35 mm loop sockets to feed another amplifier
- Long-distance switch: Boosts output dynamics to offset long-cable loss (green indicator)
- Front panel: Lit power switch, volume knob, ventilation window
- Indicators: 5 LEDs: 70V, signal, clip, protection, over-temperature
- Protection: Over-temperature, DC, short circuit (auto recovery)
- Cooling: Rear fan
- Power supply: AC 220V / 50 Hz
- Rated power consumption: 2700W
- AC fuse: F15AL250V
- Unit dimensions: 483 × 380 × 88 mm
- Net weight: 9.1 kg
Features
- 1500W or more on a 100V line: enough for a long run of outdoor horn speakers.
- 750W on a 70V line: you know the real output for the line voltage you choose.
- XLR and 6.35 mm loop sockets: share one signal across several amplifiers.
- Long-line switch: compensates for loss on distant speaker cables.
- Over-temperature, DC and short-circuit protection with a 15A fuse: auto recovery after a short.