The DSPPA DMA20 is a gooseneck desk paging microphone with six touch zone keys, built for DSPPA DMA6250U series mixer amplifiers. It runs up to 600 m on one network cable with no power adapter, so reception and admin desks in schools, hotels and malls can page one zone or every zone.
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The DSPPA DMA20 is a gooseneck desk paging microphone made for DSPPA's six-zone DMA6250U series mixer amplifiers. Set it on a reception or admin desk, tap the zones you want, press talk, and your voice reaches only those areas. There is no power adapter: power, audio and control all travel from the amplifier over a single network cable.
DSPPA DMA20 touch panel and zone keys
The front is a glass touch panel with an anti-fingerprint coating. Six keys map directly to the amplifier's six zones, and an all-zone key pages everywhere at once; press and hold it to keep it latched.
- 6 independent zone keys plus one all-zone key.
- Chime key with two tones: one rising before an announcement, one falling after it.
- 4-segment level meter so you can see your speaking level.
- Key lock to stop accidental changes.
- Source switch key and AUX/MP3 volume knob, so background music is adjusted from the same desk.
One network cable, up to 600 m
Two RJ45 ports on the back carry audio and RS485 control. A single station wired straight to the amplifier can sit up to 600 m away. Need paging from more than one desk? Daisy-chain them over a total run of up to 300 m. DSPPA specifies CAT5e or better with no more than 12 ohms of resistance per 100 m.
Priority and DIP switch settings
Eight DIP switches on the rear set each station's address. Address 6 has the highest priority, which makes it the natural choice for the principal's office or the security room. The same switches turn strong cut on or off and set the talk key to either toggle or push-to-talk. The mic gain knob is recessed at the back, so nobody changes it once it is set.
Where the DMA20 fits in Saudi buildings
- Schools: the deputy principal pages one floor of classrooms or just the courtyard instead of the whole building.
- Hotels: reception calls the lobby or restaurant without disturbing guest floors.
- Malls and showrooms: announcements go to one section or the car park while other zones keep background music.
- Warehouses and factories: the supervisor pages the loading bay from an office far from the rack room.
- Mosque complexes: page the Quran classroom or admin office separately from the prayer hall.
Compatible DSPPA amplifiers
DSPPA lists the DMA20 for the DMA6250U series: DMA6250U, DMA6350U, DMA6500U and DMA6650U. Each of these amplifiers has two RJ45 remote paging ports with 24V DC power. In the amplifier's priority chain, remote paging comes after mute, the EMC emergency input, the siren, MIC1 and the chime, and ahead of music sources such as Bluetooth, MP3 and FM.
DMA20 or DMA60M?
Both stations share the same housing and audio specs: 30 mV sensitivity, 200 Hz to 15 kHz response, S/N of 70 dB or better and 172×160×53 mm dimensions. The difference is the host and the chime. The DMA20 pairs with the DMA6250U series six-zone amplifiers and has two chime tones. The DMA60M pairs with the DMA6112 and DMA6124 matrix amplifiers and has a single falling chime.
Frequently Asked Questions
Does the DMA20 need a power adapter?
No. It is powered by the amplifier over the same network cable. Use CAT5e or better.
Will the DMA20 work with other DSPPA amplifiers?
DSPPA lists it for the DMA6250U series (DMA6250U, DMA6350U, DMA6500U, DMA6650U). For the DMA6112 or DMA6124 matrix amplifiers, use the DMA60M.
Specifications
- Model: DMA20
- Type: Remote paging station (gooseneck desk microphone)
- Compatible amplifiers: DSPPA DMA6250U series 6-zone amplifiers (DMA6250U, DMA6350U, DMA6500U, DMA6650U)
- Sensitivity: 30±3 mV
- Frequency response: 200 Hz to 15 kHz
- S/N ratio: ≥70 dB
- RJ45 port: Dual RJ45 for communication and audio, RS485 protocol
- Panel keys: 6 zone keys, source switch, all-zone key (press and hold to lock), talk key, chime key
- Indicators and controls: 4-segment level meter, power LED, AUX/MP3 source LED, AUX/MP3 volume knob, mic gain knob (rear, hidden)
- Microphone: Mic head with light ring on an adjustable neck, 5-pin XLR connector
- Chime: Two tones: chime up and chime down
- DIP switches: 8 switches: 1-3 address, 4 strong cut, 5 MP3/AUX volume knob enable, 6 MP3 source (SD or USB), 7 talk key mode, 8 host type (6-zone or matrix)
- Priority: Address 6 has the highest priority
- Cascading and distance: Daisy-chain up to 300 m; single station up to 600 m
- Cable: CAT5e or better, ≤12 Ω per 100 m
- Power: Powered by the host amplifier (no adapter)
- Unit dimensions (H×W×D): 172×160×53 mm
- Net weight: 0.89 kg
Features
- 6 independent zone keys plus an all-zone key: page a single area or the whole site with one touch.
- Dual RJ45 ports, up to 600 m for a single station: put the mic in the admin office, far from the rack room.
- Daisy-chained stations (up to 300 m): several desks can page on the same system.
- Powered by the amplifier, no adapter: one network cable carries audio, control and power.
- Two chime tones (up and down) and top priority for address 6: urgent calls cut in first and get attention.