The DSPPA DA2500 is the most powerful 2-channel model in the DA series: 500W per channel on 70V or 100V lines from a 1U chassis. It is built for jobs where each zone carries many horn or wall speakers, such as large mosque courtyards, warehouses and mall car parks.
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The DSPPA DA2500 is the answer when 250W per zone is not enough. It delivers two channels of 500W each on a 70V or 100V line, 1000W in total, from a single 1U rack unit. A Friday mosque courtyard, the perimeter of a large school or a warehouse spanning thousands of square metres all need many horn speakers on long cable runs, and that is the job this model is built for.
DSPPA DA2500 power and specifications
The DA2500 is the highest-power 2-channel model in the DA series, keeping the same chassis and the same input panel as its smaller siblings.
- 2 channels at 500W each.
- 70V or 100V output, set by a rear switch.
- Frequency response 80 Hz to 15 kHz; THD below 0.3%.
- Channel separation above 70 dB at 1 kHz.
- Power draw 1270W on AC 220V, 720W on 24V DC.
Power for long speaker lines
Work out each channel's load by adding up the speaker taps on it. Sixteen 30W horn speakers come to 480W, so they fit on one channel and leave the second free for another area. Leaving some headroom below 500W is better practice than loading the channel to the limit. With a draw of up to 1270W, plan a suitable power outlet in the equipment room.
Double the power, same 1U size
Net weight is 6.4 kg and the chassis measures 483 x 435 x 44 mm, identical to the DA2250. Several units can stack in one rack, and the fan speeds up only as temperature rises rather than running flat out all day.
Priority paging and 24V DC backup
Two priority inputs, one balanced line and one 100V unbalanced, mute the normal input when an announcement comes in and restore it 2-3 seconds afterwards. Urgent calls in a factory or car park get through over the music. The amplifier also accepts 24V DC, so it can run from backup batteries, with rated output 3 dB lower on DC. Protection covers power-on, high temperature, DC on the output and short circuits.
DA2500 use cases in Saudi Arabia
- Friday mosque courtyards and outdoor Eid prayer grounds.
- Warehouses and distribution centres in Riyadh, Dammam and Jeddah.
- Car parks at malls and large commercial complexes.
- Sports grounds and wide school yards.
Connections and compatibility
Inputs accept line-level audio at 775 mVRMS through HT-3.81 Phoenix terminals. Put a mixer or preamplifier such as the DSPPA MP9811P in front to combine microphones and music sources. The balanced line output passes the signal on to another amplifier when you need more channels.
DA2500, DA2250 or DA3850?
The DA2250 shares this chassis and input panel but delivers 250W per channel and draws 610W, enough when every zone stays under 250W. The DA3850 is a single channel giving 1500W or more on a 100V line, but it has no 24V DC input or priority inputs and stands 88 mm tall. Choose the DA2500 when you need two strong zones with battery backup.
Frequently Asked Questions
How many horn speakers can the DSPPA DA2500 run?
Keep each channel at or below 500W of speaker taps. With 30W horns that is 16 per channel (480W), or 32 across both channels.
Is the DA2500 bigger than the DA2250?
No. Both use the same 1U chassis, 483 x 435 x 44 mm, and weigh 6.4 kg net. Only power and consumption differ.
How much electricity does the DA2500 use?
The datasheet lists 1270W on AC 220V at rated output, 42W at idle, and 720W when running from 24V DC.
Specifications
- Model: DA2500
- Type: Class-D digital power amplifier
- Series: DSPPA DA 2-/4-channel series with DC 24V (DA2125, DA2250, DA2500, DA4060, DA4125, DA4250)
- Channels: 2
- Rated power per channel: 500W
- Speaker line output: 70V or 100V via rear selector switch
- Input sensitivity: 775 mVRMS (0 dBV, all balanced inputs); 100 VRMS (100V unbalanced input)
- Input impedance: 60 kΩ (balanced); 20 kΩ (balanced priority); 100 kΩ (100V unbalanced)
- SNR: >80 dB (at 100 VRMS output)
- Channel separation: >70 dB (1 kHz)
- Frequency response: 80 Hz to 15 kHz (±3 dB, normal operation)
- THD: <0.3% (1 kHz)
- Slew rate: >29 V/µs
- Priority threshold: >10 mVp (balanced priority input); >1000 mVp (100 VRMS priority input)
- Inputs: Balanced line input, balanced priority input, 100 VRMS unbalanced priority input (HT-3.81 Phoenix connectors)
- Outputs: Balanced line output to another amplifier (Phoenix); 70V/100V speaker output on 7.62-4P fence socket with cover
- Front panel controls: Volume knob per channel, power switch with indicator
- Indicators: 5 LED indicators: PRO, LIM, CLP, SIG, 70V
- Protection: Power-on, high temperature, DC, short circuit, plus voltage-limit circuit
- Power supply: AC 180-250V, 50/60 Hz; or DC 24V (rated output -3 dB)
- Power stage: Switching power supply with active PFC
- Cooling: Temperature-controlled fan
- Power consumption (AC 220V): 1270W
- Power consumption (DC 24V): 720W
- Static consumption (AC 220V): 42W
- Static consumption (DC 24V): 43.2W
- Chassis dimensions: 483 × 435 × 44 mm (without feet), 1U
- Feet: 4 removable 6.5 mm soft plastic feet
- Net weight: 6.4 kg
Features
- 500W per channel (1000W total): enough for dozens of horn speakers on a single line.
- 1U chassis, 6.4 kg net: same size as the 250W model, so rack space stays free.
- 24V DC input: keeps running on backup batteries during outages at 3 dB lower rated power.
- 2 priority inputs (10 mVp and 1000 mVp thresholds): paging and alerts override music automatically.
- Balanced line output: daisy-chain the signal to a second amplifier when the system grows.