Product Information

Attribute

Value

Watt

Upto 20 Watt

Voltage

3.7 V

Battery

Rechargeable

Ahuja NBA 15 Neckband PA System

KTI1400200NBA15

Product Description

The Ahuja NBA-15 is an ultra-portable 12W neckband public address system designed for clear, low-distortion voice amplification during mobile presentations, guided tours, and instructional sessions.

Make / Brand: Ahuja
Model: NBA-15
Output Power: 12 W Max
Speaker Impedance: 4 Ω
Frequency Response: 80 Hz – 12,000 Hz
Microphone Input: Ø 3.5 mm jack (1.0 mV sensitivity)
Line Input: Ø 3.5 mm jack (250 mV sensitivity) for external media players (MP3/CD/DVD)
Microphone Element: Condenser, cardioid directional headband microphone
Power Source: Built-in 3.7V, 2000mAh lithium-ion rechargeable battery (they are not included)
Charging Adapter: AC 100–240V 50/60Hz input, DC 5V 750mA output
Indicators: Integrated low-battery LED status indicator
Form Factor: Compact bodypack wearable via shoulder strap or waist belt

KTI1400200NBA15

5.0

1 ratings

Price

₹ 3,187.35 excl. GST

+ 18.00% Tax + Freight Charge

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Product Details
Available Brands	Ahuja
Unit	Numbers
HSN Code	85181000
Weight	0.34 kg
Dimension	L 4.4 x W 8.6 x H 9.8 cm cm ft in m
Warranty	Not Applicable
Resources	Download Datasheet
Tags/categories	Automation PA Solutions Mikes Microphones

Usually dispatched within 2 days

About this product .

The Ahuja NBA-15 Neckband PA System delivers high-intelligibility voice reinforcement in an elegant, lightweight wearable format. Built with an optimized acoustic chamber and a 4-ohm internal speaker driver, the system provides up to 12 watts of maximum audio output power while maintaining crisp voice clarity and low distortion even at elevated volume levels.
Equipped with an ergonomic condenser headband microphone featuring a directional cardioid pickup pattern, the system isolates the presenter's voice and suppresses ambient acoustic feedback. The microphone terminates in a standard 3.5 mm jack, connecting directly to the dedicated low-noise microphone input port.
For multimedia integration, the unit incorporates an auxiliary 3.5 mm line-level audio input allowing simultaneous playback from smartphones, tablets, MP3 players, and other line-level audio equipment alongside speech amplification.
The system operates on an internal 3.7V, 2000mAh lithium-ion rechargeable battery (they are not included), supported by an onboard low-battery LED indicator to prevent unexpected operational downtime. Recharging is handled via the supplied DC 5V, 750mA universal AC power adapter compatible with 100V to 240V mains power.
With a compact footprint of 86 mm by 98 mm by 44 mm and a total amplifier weight of approximately 340 grams, the NBA-15 is engineered for versatile wear around the waist or suspended over the shoulder using the supplied carrying strap, ensuring hands-free mobility for teachers, tour guides, workshop presenters, and fitness instructors.

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Product Information .

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Ahuja NBA-15 Audio Interface, Transducer, and Power Compatibility

The Ahuja NBA-15 portable neckband public address amplifier is engineered with standard audio and electrical interfaces to support mobile voice reinforcement alongside external auxiliary audio reproduction. Designed for commercial training, teaching, tour group coordination, and instructional presentations, the amplifier incorporates dedicated connection ports for both dedicated microphone transducers and line-level playback devices.

Microphone Input and Transducer Compatibility

The unit features a dedicated 3.5 mm (Ø 3.5mm) microphone input socket calibrated for low-level microphone signals. The Mic-1 channel features an input sensitivity of 1.0 mV, engineered to match the supplied headband microphone. The microphone assembly utilizes a cardioid condenser transducer element, delivering directional acoustic capture that suppresses off-axis environmental noise and reduces feedback loops across the system's operational frequency range of 80 Hz to 12,000 Hz.

Line-Level Audio Source Integration

For multimedia playback and background audio distribution, the NBA-15 includes an independent 3.5 mm auxiliary line input jack. Operating at an input sensitivity of 250 mV, this connection accepts direct analog line-out audio signals from a wide variety of playback equipment, including:

MP3 players and personal digital audio players
CD players and portable disc drives
DVD players and multimedia instructional units
External audio playback devices with standard 3.5 mm line outputs

Audio signals introduced via the 3.5 mm line input or microphone socket are amplified through low-distortion internal circuitry delivering up to 12 W maximum power output directly across the integrated 4-ohm (4Ω) internal speaker transducer.

Electrical and Charging Infrastructure Compatibility

The Ahuja NBA-15 operates on an integrated internal 3.7 V, 2000 mAh rechargeable lithium-ion battery. Recharging is handled via the dedicated AC power adapter supplied for the system. The power supply supports worldwide commercial utility mains voltages, accommodating an AC input range of 100–240 V at 50/60 Hz and stepping down to deliver a regulated DC 5 V, 750 mA charging output directly to the unit. Operating status and recharge requirements are visually monitored via the amplifier's built-in low-battery LED indicator.

Interface and Electrical Specifications Matrix

Interface / Subsystem	Connector / Mechanism	Sensitivity / Rating	Compatible Device / Destination
Microphone Input (Mic-1)	Ø 3.5 mm Socket	1.0 mV	Cardioid condenser headband microphone
Auxiliary Line Input	Ø 3.5 mm Socket	250 mV	DVD players, CD players, MP3 players, analog line-out devices
Internal Load	Internal Driver	4 Ω Impedance	12 W Max internal output circuitry (80–12,000 Hz)
Charging Input Interface	DC Charging Port	5 V DC, 750 mA	100–240 V AC, 50/60 Hz to 5 V DC, 750 mA adapter
Integrated Battery Storage	Internal Pack	3.7 V, 2000 mAh	Internal rechargeable Lithium-ion cell assembly

Mounting and Mechanical Interfacing

Weighing approximately 0.34 kg (340 g) with compact housing dimensions of 86 mm (W) × 98 mm (H) × 44 mm (D), the amplifier housing interfaces directly with wearable carrying accessories. It is mechanically compatible for deployment worn around the waist or slung across the shoulder using the included strap assembly, maintaining secure positioning during active movement in industrial walkthroughs, training seminars, and classroom environments.

Setup, Mounting, and Configuration Guide for Ahuja NBA-15

The Ahuja NBA-15 is an ultra-portable 12W public address amplifier engineered for rapid commissioning across mobile applications such as instructional classrooms, tour guiding, yoga sessions, and training presentations. Proper physical deployment and signal routing ensure low distortion and optimal acoustic performance across its 80 Hz to 12,000 Hz frequency response range.

Power Infrastructure and Battery Commissioning

Before operational deployment, the internal 3.7V, 2000mAh rechargeable lithium-ion battery must be fully charged using the supplied power supply adapter. Connect the AC adapter to an electrical supply rated at 100–240V AC (50/60 Hz). Insert the adapter's DC output lead (delivering 5V DC, 750mA) into the dedicated charging port on the amplifier housing. Monitor the integrated low-battery LED indicator to verify operational readiness during pre-deployment checks.

Wearable Mounting Configurations

With an ultra-compact footprint measuring 86 mm (W) × 98 mm (H) × 44 mm (D) and an overall weight of approximately 0.34 kg (including the internal battery), the amplifier unit is designed for mobile hands-free operation. Users can deploy the system in two primary configurations:

Waist-Worn Setup: Secure the amplifier around the operator's waist using the adjustable strap, positioning the internal 4Ω speaker driver facing outward into the coverage area.
Shoulder-Slung Setup: Lengthen the strap to hang the unit across the shoulder, ensuring the speaker grille remains unobstructed by heavy clothing to preserve high-frequency acoustic dispersion.

Headband Microphone Connection and Capsule Positioning

Connect the included headband microphone lead to the Ø 3.5 mm microphone input jack (Mic-1 rated at 1.0mV input sensitivity). Position the headband securely over the head so that the condenser transducer sits comfortably near the user's temple. Position the flexible gooseneck to locate the cardioid condenser capsule approximately 2 to 3 cm from the corner of the mouth. Because cardioid polar patterns exhibit directional sensitivity, aim the capsule directly at the mouth while keeping the physical speaker enclosure oriented away from the microphone to eliminate acoustic feedback loops.

Auxiliary Line Input Integration

For applications requiring background music or pre-recorded audio alongside vocal projection, connect an external media source (such as an MP3 player, CD player, or DVD unit) into the dedicated 3.5 mm Line input socket. The line channel is matched for 250mV input sensitivity, allowing seamless signal amplification without exceeding the amplifier's 12W maximum low-distortion threshold.

Technical Deployment Parameters

Parameter	Specification
Maximum Power Output	12W Max (Low-Distortion Circuitry)
Speaker Impedance	4Ω
Audio Frequency Bandwidth	80 Hz – 12,000 Hz
Microphone Port Specification	Ø 3.5 mm Socket / 1.0 mV Sensitivity (Condenser Cardioid)
Line-In Port Specification	Ø 3.5 mm Socket / 250 mV Sensitivity
Internal Power Supply	3.7V, 2000mAh Rechargeable Lithium-ion Battery
Charging Power Requirements	100–240V AC 50/60Hz Input; 5V DC, 750mA Output
Unit Dimensions & Weight	86 mm (W) × 98 mm (H) × 44 mm (D); ~0.34 kg

Ahuja NBA-15 Industrial, Educational & Commercial Use Cases

The Ahuja NBA-15 neckband public address system delivers 12W maximum power output within an ultra-portable 0.34 kg housing (W86 × H98 × D (they are not included)44 mm). Designed for speech reinforcement without restricting user mobility, the unit combines a directional cardioid condenser headband microphone with an internal 4Ω loudspeaker and integrated 3.7V, 2000mAh rechargeable lithium-ion battery. These characteristics make it suitable for diverse operational scenarios across instructional, commercial, and institutional environments.

Educational Institutions and Classroom Teaching

In standard classrooms, lecture halls, and playschools, instructors frequently face vocal fatigue during continuous multi-hour teaching sessions. The NBA-15 resolves this by providing clear vocal projection across an 80 Hz to 12,000 Hz frequency response range, ensuring speech intelligibility across the room. The wearable form factor allows educators to move freely between whiteboards, projection screens, and student desks while maintaining hands-free control.

Classroom Delivery: Consistent 12W amplification reduces vocal strain during extended instructional periods.
Early Childhood & Playschool Environments: Compact waist-mounted or shoulder-slung design keeps hands free to manage learning activities.
Low Distortion Audio: Dedicated internal circuitry ensures speech remains clear and undistorted even at higher volume settings.

Industrial Site Visits and Guided Facility Tours

Facility managers, plant supervisors, and tour leaders operating in expansive warehouses, commercial facilities, and processing plants require portable voice amplification to brief visiting groups. The NBA-15's cardioid condenser microphone capsule focuses specifically on the speaker's voice while rejecting ambient environmental noise, ensuring instructions and safety briefings are heard clearly by tour participants.

Walkthrough Briefings: Shoulder-worn or waist-worn configuration enables continuous narration while navigating operational floors.
Status Monitoring: An integrated low-battery LED indicator alerts site personnel when the internal battery requires recharging via the 100–240V AC adapter.

Corporate Training Workshops and Group Presentations

For mobile trainers, technical demonstrators, and seminar facilitators operating in mid-sized meeting rooms or training suites, the NBA-15 provides immediate plug-and-play voice reinforcement without requiring fixed audio-visual installations. Its 1.0mV sensitivity 3.5mm microphone input allows direct connection of the headband mic, allowing the presenter to manipulate presentation tools, equipment, or demonstration materials effortlessly.

Fitness, Wellness, and Yoga Class Instruction

Instructors conducting yoga classes, physical training routines, and wellness sessions require reliable sound coverage while performing continuous physical movements. Weighing approximately 340 grams, the amplifier bodypack attaches securely around the waist or across the shoulder, remaining stable during floor exercises and active demonstrations.

Multimedia Presentations and Auxiliary Audio Playback

Equipped with a dedicated 3.5mm line input socket (250mV sensitivity), the NBA-15 accepts audio feeds from auxiliary playback equipment such as MP3 players, CD players, or DVD players. This dual-input utility allows operators to broadcast instructional tracks or background audio concurrently during presentations, language training modules, and group demonstrations.

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