Ahuja Amplifier SSA-5000DP

Ahuja SSA-5000DP PA Mixer Amplifier

The Ahuja SSA-5000DP is a high-wattage PA mixer amplifier for large public address installations, and its name needs one clarification up front: 5000 is the model number, not the power. Ahuja rates this amplifier at 500 W RMS at 10 percent THD, with a 750 W maximum output, 450 W RMS at 5 percent THD and 415 W RMS at 2 percent THD, and those published figures are the ones used throughout this page. For that output it provides seven microphone inputs, two auxiliary inputs, a line input and a built-in digital MP3 player with remote control, feeding speaker outputs at 4 ohms, 8 ohms, 70 V and 100 V so both low-impedance speakers and long constant-voltage lines are covered from one unit. It is built for the realities of Indian installations, including instant changeover to battery power when the mains fails.

Key features

• 500 W RMS output at 10 percent THD, 750 W maximum, per Ahuja’s published ratings
• 7 microphone inputs and 2 auxiliary inputs, plus line input and output
• Built-in MP3 player with remote control for USB drives and SD and MMC cards
• Speaker outputs for 4 ohm, 8 ohm, 70 V and 100 V line systems
• Instant transfer to 36 V DC battery power if AC mains fails
• Resettable circuit breaker protection against overload and short circuit
• Box speaker and driver unit selector, with bass boost defeated at the driver unit position
• Preamp output for connecting a booster amplifier

Power, stated honestly

Large PA amplifiers attract inflated headline numbers, so the SSA-5000DP’s specification deserves to be read the way Ahuja publishes it. The continuous working figure is 500 W RMS measured at 10 percent total harmonic distortion, falling to 450 W at 5 percent and 415 W at the cleaner 2 percent distortion point, with 750 W quoted as the maximum. Output regulation is held within 2 dB from no load to full load at 1 kHz, which means announcements stay at a consistent level as zones are switched in and out. The frequency response of 50 Hz to 15,000 Hz within plus or minus 3 dB and a 60 dB signal-to-noise ratio are speech-and-music figures appropriate to public address, where intelligibility across a large area matters more than studio bandwidth.

Inputs and the built-in player

Seven microphone inputs, each rated 0.8 mV into 4.7 kOhm, allow a full announcement setup, multiple podium and roving mics, or several prayer and performance positions, without an external mixer. Two auxiliary inputs at 100 mV take music sources, and a 1 V line input accepts the output of an external mixer or another amplifier for larger systems. The integrated digital player handles MP3 playback from USB drives and SD or MMC cards with a remote control, so scheduled music, bells and recorded messages need no separate source component. A preamplifier output at 200 mV and a line output at 1 V feed a booster amplifier when a site outgrows a single unit, and bass and treble controls, each plus or minus 10 dB at 100 Hz and 10 kHz respectively, shape the overall programme.

Speaker outputs and driver protection

Four speaker output options cover the two worlds of PA. The 4 ohm and 8 ohm terminals drive low-impedance box speakers directly, while the 70 V and 100 V outputs feed distributed line systems with transformer-coupled speakers across large buildings and outdoor areas. A selector switch distinguishes box speakers from driver units, the horn drivers used on long-throw PA horns, and at the driver unit position the bass boost is automatically defeated, protecting those drivers from low-frequency energy they are not built to reproduce. It is a small detail that prevents a common and expensive installation mistake.

Power failure and protection design

Announcements matter most exactly when conditions are worst, so the SSA-5000DP runs from 220 to 240 V AC and transfers instantly to 36 V DC, supplied by three 12 V car batteries, if the mains supply fails, with AC consumption of 1000 VA and DC draw of 8 A. A resettable circuit breaker guards against overload and short circuit, avoiding the fuse hunts that delay recovery after a fault. The chassis measures 510 x 172 x 385 mm and weighs 26.7 kg, substantial rack or table-top hardware for temples, mosques, schools, railway and bus facilities, factories, large halls and outdoor functions where one amplifier has to cover a lot of ground and simply keep working.