The DSPPA DMA6650U is the most powerful model in the DMA6250U series, delivering 650W over 6 zones with 4 mic inputs and two ports for DMA20 paging stations. It suits residential compounds, hospitals and large schools with many indoor and outdoor speakers.
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The DSPPA DMA6650U is the most powerful unit in the six-zone DMA6250U series, rated at 650W. It is meant for sites where the speaker load passes 500W: a residential compound with speakers in gardens, gates and the clubhouse, a hospital with several wings, or a boys' and girls' school campus on the same plot.
DSPPA DMA6650U power and zones
The 650W output is split across six zones, each with a knob and indicator, and the FN key sets which zones are live. With 70V and 100V outputs you can run long speaker lines between buildings, or use the 4-16Ω output for speakers close by.
- Rated output: 650W.
- Full-power draw: 800W on AC, 435W on DC.
- Idle draw: 40.8W on AC, 37.7W on DC.
- Net weight: 11 kg.
Paging across several buildings
Two RJ-45 ports on the rear take DMA20 stations, up to 6 on each port for 12 across the site. Audio, control and 24V power all share the one cable. On a compound, security can page from the main gate, management from the office and the clubhouse supervisor from the lounge.
Microphones and sources
MIC1 is a balanced XLR input; MIC2 to MIC4 are Phoenix terminals, and each has its own 48V phantom switch. Mic sensitivity is 5mV. You also get USB, an SD card slot, Bluetooth, FM, an EMC input for emergency signals and a line output to feed another device or a recorder.
Example: a compound on 650W
- Zone 1, gates and perimeter: 8 horns at 30W (240W).
- Zone 2, gardens and walkway: 12 garden speakers at 10W (120W).
- Zone 3, clubhouse and gym: 10 ceiling speakers at 6W (60W).
- Zone 4, mosque: 8 column speakers at 10W (80W).
- Zones 5 and 6: pool area and management offices.
The first four zones already total 500W, so a DMA6500U would hit its limit before the pool and offices are added.
Priority and control
Priority runs MUTE, EMC, siren, MIC1, chime, paging stations, then other sources, and the chime is blocked during an alarm. Paging selected zones activates forced cut on wall volume controls. The amplifier can be run from the front panel or an infrared remote, and it restores its last settings after a power cut.
Sites that suit the DMA6650U
- Residential compounds: gardens, gates, clubhouse and mosque.
- Hospitals: wards, emergency, waiting halls and parking.
- School campuses: large yards with horn speakers and classrooms with ceiling speakers.
- Factories: production halls, the warehouse and offices.
DMA6650U, DMA6500U or DMA650U?
The DMA6500U shares the chassis, inputs and zones, but gives 500W, draws 600W and weighs 10.1 kg. The DMA650U matches the 650W output but drives one line with no zones, has no paging station ports and a 100V-only output with no 70V tap. Choose the DMA6650U when you need both high power and zoning.
Frequently Asked Questions
How much speaker load can the DMA6650U take?
It is rated at 650W, so keep the total of all speaker taps across the zones below that with some headroom.
Will it run on 110V mains?
No. DSPPA lists AC 220-230V only, plus a 24V DC emergency input.
Specifications
- Model: DMA6650U
- Series: DMA6250U Series 6-zone mixer amplifier with remote paging
- Rated output: 650W
- Zones: 6 zones, each with its own volume knob and indicator, FN zone-select key
- Speaker output: 4-16Ω, 70V and 100V constant voltage
- Microphone inputs: 4: MIC1 balanced XLR; MIC2, MIC3, MIC4 unbalanced Phoenix
- MIC sensitivity: 5mV ±1mV
- AUX1 sensitivity: 350mV ±50mV (unbalanced RCA)
- AUX2 sensitivity: 350mV ±50mV (unbalanced Phoenix)
- EMC sensitivity: 350mV ±50mV (unbalanced Phoenix)
- Inputs and outputs: 4 MIC in, 2 AUX in, 1 EMC in, 1 LINE out, 6 zone outputs, FM antenna terminal
- Built-in sources: USB, SD/TF card, FM radio, Bluetooth
- Phantom power: +48V ±5V, separate switch per mic input
- Remote paging: 2 RJ-45 ports for DMA20 stations with zone control, forced cut and DC+24V power; up to 6 stations per port
- Frequency response (MIC): 120Hz to 12kHz (±3dB)
- Frequency response (AUX): 80Hz to 15kHz (±3dB)
- THD: Below 1%
- Tone control: Treble and bass 10dB (±2)
- Priority: MUTE > EMC IN > Siren > MIC1 > Chime > remote paging > other sources (chime blocked during alarm)
- Control triggers: EMC input, siren short-circuit trigger with independent alarm output, mute short-circuit trigger
- Protection: Overload, clipping, short circuit, over-temperature
- Display: Backlit LCD, 5-segment level meter
- Control: Infrared remote, power-off memory
- Power supply: AC 220-230V, 50/60Hz
- Emergency power: DC+24V input; AC and DC supplies can each be switched off
- Static consumption: AC: 40.8W; DC24V: 37.7W
- Rated consumption: AC: 800W; DC24V: 435W
- Dimensions (D×W×H): 430 × 390 × 88 mm
- Net weight: 11 kg
Features
- 650W over 6 zones: the series' highest output, for sites mixing outdoor horns and indoor ceiling speakers.
- 2 RJ-45 ports for up to 12 DMA20 stations: paging from several buildings on one site.
- 4 mic inputs with 48V phantom, including a balanced XLR: stage and wireless mics on one unit.
- 800W draw on AC and 435W on 24V DC: clear figures for sizing circuits and batteries.
- Overload, clipping, short-circuit and thermal protection: safe operation under heavy loads.