The Ahuja ABA-4000 is an active, bi-amplified 325W RMS loudspeaker engineered for high-demand public address and live sound reinforcement. Configured with a dedicated 275W RMS Class H low-frequency amplifier and a 50W RMS Class AB high-frequency amplifier, this heavy-duty moulded plastic enclosure delivers reliable acoustic performance across a 50 Hz to 20,000 Hz frequency range. System integrators, touring technicians, and venue operators deploy the ABA-4000 across multiple acoustic environments requiring versatile input routing and stage-ready durability.
Live Vocal and Musical Performance Reinforcement
In live music setups, the ABA-4000 serves as a primary Front-of-House (FOH) active loudspeaker. The 12-inch low-frequency woofer (with 2.5-inch voice coil) combined with the 1.75-inch dynamic horn compression driver with a titanium diaphragm delivers balanced vocal clarity and full-range acoustic output. Front-end connectivity supports direct microphone injection via the balanced XLR Input 1 (switchable between 20 mV mic and 775 mV line sensitivities), while Input 2 accommodates balanced 6.3 mm line signals from instruments or keyboards.
Stage Foldback and Floor Wedge Monitoring
Designed with an angled moulded enclosure profile, the ABA-4000 can be positioned directly on stage floors as an active wedge monitor for vocalists, instrumentalists, and public speakers. Performers and sound engineers benefit from onboard active tone controls offering ±5 dB of adjustment at 100 Hz (Bass) and 10 kHz (Treble) to tailor monitor response and counteract stage boundary effects. The integrated Clip LED indicator provides immediate visual feedback to prevent power amplifier overdrive during high-gain live sets.
Auditoriums, Mini-Theatres, and Multi-Purpose Halls
For institutional installations in auditoriums, community centers, and mini-theatres, the speaker offers flexible mounting and distribution options. It can be pole-mounted using the integrated speaker stand socket or positioned on flat elevated surfaces. Facilities requiring distributed sound across extended seating zones can utilize the balanced XLR Line Output, switching between Loop Through (to mirror Input 1) and Mixed Output (to combine Input 1 and Input 2 signals at 775 mV / 1 kΩ) to daisy-chain additional active speakers or active subwoofers.
Hospitality, Pubs, Bars, and Club Installations
In commercial hospitality venues requiring high-SPL background music and live entertainment audio, the dual-input mixer architecture simplifies media routing. Background music sources such as media players, laptops, and DJ mixers connect directly to Input 2 using the unbalanced dual RCA stereo inputs (250 mV / 10 kΩ) or the 6.3 mm balanced line jack, while speech microphones operate simultaneously on Input 1.
Religious Gatherings and House of Worship Sound
Prayer halls and religious gathering spaces demand high speech intelligibility and consistent sound distribution over broad coverage areas. Operating at 220–240 V AC (50/60 Hz) with an output regulation of ≤ 0.5 dB from no load to full load, the ABA-4000 ensures stable acoustic projection across variable crowd sizes and sustained operating cycles.
Deployment Configuration Overview
- FOH Stand Mounting: Utilizes the built-in stand socket for elevated acoustic projection in halls and outdoor touring setups.
- Stage Wedge Placement: Angled floor placement for zero-latency artist foldback monitoring.
- Multi-Unit Cascading: Balanced XLR line linking (Loop/Mix selectable) for expanded coverage across deep auditoriums and multi-room venues.
