Ahuja SSA 160EM 160W PA mixer amplifier front panel controls and meters

Power Amplifier Ahuja SSA 160EM

KTI14002001PS160

Product Description

The Ahuja SSA 160EM is a 160W medium wattage public address mixer amplifier engineered for commercial sound, live announcements, and multi-zone distribution across industrial facilities, auditoriums, and commercial complexes.

Make/Brand: Ahuja
Model: SSA-160EM
Power Output: 220W Max., 160W RMS at 10% THD, 140W RMS at 5% THD, 120W RMS at 2% THD
Input Channels: 5 × Mic (0.65mV/4.7kΩ), 2 × Aux (100mV/470kΩ), 1 × Line (1V/50kΩ)
Frequency Response: 50Hz to 15,000Hz ±3dB
Tone Controls: Bass ±10dB at 100Hz, Treble ±10dB at 10kHz
Outputs: Preamp (200mV/600Ω), Line (1V/1kΩ)
Speaker Tap Impedance/Voltage: 4Ω, 8Ω, 70V, and 100V lines
Output Regulation: ≤ 2 dB, no load to full load at 1kHz
Signal to Noise Ratio: 60dB
Power Supply: AC 220–240V 50/60Hz, DC 24V (2 × 12V Car Battery (they are not included))
Power Consumption: AC 300VA, DC 4A
Dimensions & Weight: 420 (W) × 155 (H) × 320 (D) mm, 13.6 kg
Protection: Built-in resettable circuit breaker against overload and short circuit

KTI14002001PS160

Price

₹ 15,533.10 excl. GST

+ 18.00% Tax + Freight Charge

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Product Details
Available Brands	Ahuja
Unit	Numbers
HSN Code	85184000
Weight	13.6 kg
Dimension	L 42 x W 32 x H 15.5 cm cm ft in m
Warranty	12 Months No-Onsite Warranty
Tags/categories	Automation PA Solutions Amplifiers, Speakers

Usually dispatched within 5 days

About this product .

The Ahuja SSA-160EM is an industrial-grade 160-watt medium wattage PA mixer amplifier designed for reliable and high-fidelity sound reinforcement. Housed in a robust metal enclosure measuring 420 × 155 × 320 mm with a total weight of 13.6 kg, it is built to withstand rigorous continuous operation in commercial and industrial settings.
Featuring versatile audio input capabilities, the SSA-160EM provides 5 microphone inputs (0.65mV/4.7kΩ), 2 auxiliary inputs (100mV/470kΩ), and 1 dedicated line input (1V/50kΩ). This comprehensive channel distribution allows seamless mixing of multiple speech and background audio sources directly on the unit without requiring external mixing consoles.
The amplifier incorporates active tone controls providing ±10dB adjustment at 100Hz (Bass) and ±10dB at 10kHz (Treble). It includes a specialized Box Speaker and Driver Unit selector switch that automatically defeats the bass boost when set to the Driver Unit position, safeguarding horn drivers from low-frequency mechanical overload.
Equipped with low-impedance 4Ω and 8Ω speaker taps alongside constant-voltage 70V and 100V line outputs, the system supports both short-run direct speaker connections and long-distance distributed ceiling or column speaker networks. Output regulation is held tight at ≤ 2 dB from no load to full load at 1kHz.
The unit supports dual power sources: standard AC 220–240V 50/60Hz mains as well as 24V DC battery power (2 × 12V external car batteries (they are not included)). In the event of an AC utility power failure, the amplifier instantly and automatically transfers operation to the connected 24V DC battery bank (they are not included) to maintain uninterrupted emergency public address capability.
For system scalability and recording, the amplifier includes dedicated preamplifier output (200mV/600Ω) and line output (1V/1kΩ) terminals to drive additional booster power amplifiers. An integrated resettable circuit breaker provides immediate circuit protection against overload and output speaker line short circuits.

Product Information .

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System Compatibility and Audio Interfacing

The Ahuja SSA-160EM medium wattage PA mixer amplifier (KT reference KTI14002001PS160) is engineered for broad integration across commercial, institutional, and industrial public address installations. It accommodates multi-channel signal routing, direct speaker line distribution, and upstream audio mixing infrastructure through standard impedance-matched interfaces.

Audio Input Compatibility

The unit features multiple concurrent input channels configured to interface with standard professional and industrial sound sources without requiring external matching transformers:

Microphone Inputs: Five independent dynamic microphone input channels rated at 0.65mV sensitivity across an input impedance of 4.7kΩ, suitable for standard low-impedance dynamic microphones.
Auxiliary Inputs: Two auxiliary input channels rated at 100mV sensitivity across 470kΩ impedance, designed for line-level peripheral playback equipment and media players.
Line Input: One dedicated line input channel rated at 1V sensitivity across 50kΩ impedance. This input accepts direct feeds from external mixing consoles, audio matrix switchers, or digital signal processors (DSP). When driven via this line input, the SSA-160EM operates directly as a booster power amplifier.

Audio Preamp and Line Interconnection

For modular public address expansions and system monitoring, the SSA-160EM provides two dedicated audio output interconnects:

Preamp Output: Rated at 200mV across 600Ω impedance, intended for signal chaining to external processing gear or sub-mixing networks.
Line Output: Rated at 1V across 1kΩ impedance, enabling direct audio loop-through to secondary booster power amplifiers for multi-zone distribution or routing to external programme recording hardware.

Loudspeaker Load and Distribution Compatibility

The amplifier is built to drive both direct low-impedance speaker arrays and distributed constant-voltage commercial sound networks. Output regulation is tightly maintained at ≤ 2 dB from no load to full load at 1kHz.

Low-Impedance Taps: Direct connections are available for 4Ω and 8Ω speaker loads, delivering maximum acoustic output for localized, high-fidelity sound reinforcement.
Constant-Voltage Line Outputs: Equipped with 70V and 100V distributed line output taps. These outputs allow long-distance cable runs with step-down line transformers installed at each loudspeaker location, reducing line transmission losses across large facilities.
Driver Unit Protection: A built-in Box Speaker/Driver Unit selector switch alters output filtering. Selecting the Driver Unit setting defeats bass boost (normal bass adjustment range: ±10dB at 100Hz) to safeguard acoustic horn driver units from damaging low-frequency over-excursion.

Power Infrastructure and Backup Compatibility

The SSA-160EM operates on standard alternating current networks and includes seamless DC backup integration:

AC Mains Power: Compatible with standard AC 220–240V supply lines at 50/60Hz, with a total power consumption rating of 300VA.
DC Emergency Operation: Equipped with terminals for 24V DC input (configured using two 12V car batteries (they are not included)). In the event of an AC utility power failure, the unit performs an instantaneous automatic transfer to the connected 24V DC battery supply (they are not included), drawing up to 4A under operational load.
Circuit Protection: A built-in resettable circuit breaker protects against output load faults and line short circuits, allowing manual reset once downstream line anomalies are resolved.

Ahuja SSA-160EM Installation and Setup Guidelines

Physical Placement and Mounting Requirements

The Ahuja SSA-160EM mixer amplifier measures 420 mm in width, 155 mm in height, and 320 mm in depth, with a total net weight of 13.6 kg. When integrating the amplifier into an equipment rack shelf, table console, or industrial control desk, ensure the mounting surface is rated to support the 13.6 kg load. Maintain adequate clearance around the enclosure chassis to allow unrestricted airflow across internal heat-dissipating assemblies.

AC Mains and 24V DC Battery Backup Wiring

The unit incorporates a dual-mode power supply designed for continuous operation across commercial and industrial facilities. For standard operation, connect the unit to an AC supply of 220–240V at 50/60Hz, accommodating an AC power consumption rating of 300VA.

For emergency backup or uninterrupted public address deployment, connect a 24V DC supply using two 12V car battery (they are not included) units wired in series. The amplifier draws up to 4A on DC operation. The system features an automatic changeover mechanism that executes an instant transfer to the 24V DC battery (they are not included) power supply without audio interruption if the AC mains supply fails.

Speaker Impedance and Distributed Line Matching

The SSA-160EM features dedicated output terminals for both low-impedance speaker setups and constant-voltage distributed speaker networks. The internal amplifier design delivers an output regulation of ≤ 2 dB from no load to full load at 1kHz, rated at 160W RMS (10% THD), 140W RMS (5% THD), and 120W RMS (2% THD), with a maximum output capability of 220W.

Low-Impedance Direct Connection: Use the 4Ω or 8Ω taps for direct speaker wiring when connecting low-impedance speaker enclosures near the amplifier. Ensure total load impedance matches the selected tap.
High-Voltage Line Distribution: Use the 70V or 100V line terminals for distributed multi-speaker systems over extended cabling runs. Ensure all connected line-matching transformer secondary taps sum up to a wattage load within the amplifier's continuous RMS rating.

Box Speaker / Driver Unit Selector Configuration

Before commissioning speaker loads, configure the rear/front panel Box Speaker / Driver Unit selector switch based on the connected acoustic transducers:

Box Speaker Position: Enables standard frequency response (50Hz to 15,000Hz ±3dB) with active tone control equalization (Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz) for full-range wooden or column speakers.
Driver Unit Position: Automatically defeats bass boost to protect horn driver units and diaphragms from mechanical and thermal damage caused by low-frequency signals.

Audio Input, Booster Output, and Line Routing

Wire signal sources according to channel input electrical specifications:

Microphone Inputs: Connect up to 5 low-impedance dynamic microphones across the 5 × Mic inputs (0.65mV / 4.7kΩ).
Auxiliary Inputs: Connect background music players or auxiliary sources to the 2 × Aux inputs (100mV / 470kΩ).
Line Input: Connect an external mixing console or audio DSP output into the 1 × Line input (1V / 50kΩ) when operating the SSA-160EM as a dedicated Booster Power Amplifier.
Preamp and Line Outputs: Route the Preamp output (200mV / 600Ω) or Line output (1V / 1kΩ) to external recording hardware or slave booster amplifiers for multi-zone system expansion.

Overload Protection and Circuit Breaker Reset

The amplifier includes a built-in resettable circuit breaker that protects internal components against short circuits across speaker output terminals and operational overloads. If a line fault or overload trips the breaker, power down the system, rectify the output cabling fault or reduce speaker load, and press the resettable circuit breaker button to restore normal operation.

Ahuja SSA-160EM Troubleshooting & Diagnostic Guide

This technical troubleshooting guide supports site engineers and sound technicians in diagnosing and resolving operational issues on the Ahuja SSA-160EM PA Mixer Amplifier (KT reference KTI14002001PS160). Adhering to structured fault-finding procedures ensures the amplifier operates within its rated 160W RMS (220W Max) operating envelope and protects system components.

Resettable Circuit Breaker Tripping and Total Output Loss

The Ahuja SSA-160EM incorporates a built-in resettable circuit breaker designed to safeguard internal circuitry from short circuits and severe output overloads. If the amplifier suddenly shuts down or loses audio output while power is applied, inspect the breaker switch on the rear panel.

Speaker Line Short Circuits: A short circuit along low-impedance (4Ω, 8Ω) or constant-voltage (70V, 100V) speaker lines will cause the breaker to trip immediately. Disconnect speaker wiring from output terminals and verify line integrity with a multimeter before resetting the circuit breaker.
Load Overload Beyond Rated Capacity: Exceeding the maximum power threshold (220W Max, 160W RMS at 10% THD) triggers overload protection. Ensure total speaker tap wattages across 70V/100V lines do not exceed 160W RMS.
Resetting Procedure: Power off the AC mains or DC supply, resolve all downstream short circuits or overloads, allow internal components to settle, and press the resettable circuit breaker button to restore normal operation.

Dual Power Supply and DC Battery Switchover Verification

The amplifier is engineered for dual power inputs supporting AC 220–240V 50/60Hz (300VA consumption) and DC 24V backup (4A consumption) using 2×12V car battery power (they are not included).

Failure to Switch to DC Backup: Verify that the 24V DC battery supply (they are not included) is connected with correct polarity. Inspect wiring terminals for loose terminal contacts or degraded cabling when automated transition from AC mains fails.
Insufficient Voltage under Load: If DC operation causes audio distortion or premature shutdown, measure the battery bank (they are not included) terminal voltage under load to ensure it maintains the full 24V supply level required for continuous 4A current demand.

Audio Distortion, Low Output, and Input Level Mismatches

Audio distortion or degraded signal-to-noise performance (rated at 60dB) generally originates from mismatched input gain staging or incorrect speaker impedance matching.

Input Sensitivity Mismatch: The unit provides 5 × Mic inputs (0.65mV/4.7kΩ), 2 × Aux inputs (100mV/470kΩ), and 1 × Line input (1V/50kΩ). Connecting a line-level device (such as an external mixer or media player) into a high-sensitivity Mic input causes severe preamplifier clipping and harmonic distortion. Always route 1V audio signals to the dedicated Line input or Aux inputs.
Tone Control Overdrive: Excessive equalization using the ±10dB Bass control at 100Hz or ±10dB Treble control at 10kHz can push the power amplifier into high harmonic distortion (>10% THD). Lower the respective tone dials toward the flat 0dB center position.
Impedance Mismatch: Connecting speaker loads below the selected 4Ω or 8Ω tap degrades output regulation (rated at ≤ 2 dB from no load to full load at 1kHz) and causes power stage overheating.

Horn Driver Unit Protection and Acoustic Tuning

When running horn driver units rather than full-range speaker cabinets, improper switch configuration can damage low-frequency voice coils.

Driver Unit Frequency Damage: When driving horn units, always set the Box Speaker / Driver Unit selector switch to the 'Driver Unit' position. This defeats the bass boost circuit, filtering out deep low-frequency content below the operating band of horn diaphragms and ensuring long-term driver reliability within the 50Hz to 15,000Hz (±3dB) response range.

Line Loop and Booster Output Issues

When chaining multiple amplifiers using the Preamp Output (200mV/600Ω) or Line Output (1V/1kΩ), verify output-to-input routing:

Low Signal to Slave Amplifier: Ensure slave booster amplifiers are fed from the SSA-160EM 1V/1kΩ Line Output rather than the lower-voltage 200mV Preamp Output unless the slave amplifier is specifically calibrated for preamp-level input sensitivity.

Ahuja SSA-160EM Public Address Deployment Scenarios & Applications

Industrial Facility Paging and Distributed Plant Audio

The Ahuja SSA-160EM is engineered to support distributed public address and paging networks across industrial shop floors, manufacturing bays, logistics warehouses, and utility plants. Operating on high-voltage 70V and 100V constant-voltage line outputs, the amplifier distributes continuous power over extensive speaker cabling runs without excessive line loss. Its rated power output of 160W RMS (at 10% THD) and 220W maximum capability reliably drives multi-speaker configurations, including wide-dispersion sound projectors and ceiling columns distributed across large facility zones.

For mission-critical plant communications, uninterrupted operation is maintained through dual-power capabilities. The amplifier runs on standard AC mains (220–240V 50/60Hz, 300VA) and features instant automatic changeover to a 24V DC battery power source (they are not included) (operating on 2 × 12V car battery banks (they are not included) drawing 4A) in the event of an electrical grid interruption.

Outdoor Horn Arrays and Acoustic Driver Protection

Perimeter yards, loading docks, and outdoor industrial complexes frequently deploy high-efficiency horn driver units for emergency signaling and clear voice broadcasting across ambient noise. The SSA-160EM features a dedicated Box Speaker / Driver Unit selector switch designed specifically for horn speaker matching. When placed in the Driver Unit position, the internal circuitry defeats low-frequency bass boost, safeguarding horn driver diaphragms and voice coils from low-frequency overload damage.

Installers can further refine speech intelligibility in reverberant or open environments using the integrated tone controls, which provide independent bass adjustment (±10dB at 100Hz) and treble adjustment (±10dB at 10kHz) across an operating frequency response of 50Hz to 15,000Hz (±3dB) with a 60dB signal-to-noise ratio.

Multi-Channel Mixing for Auditoriums, Institutions, and Commercial Spaces

Commercial venues such as training centers, lecture halls, religious institutions, corporate premises, and municipal auditoriums benefit from the unit's comprehensive front-end input stage. The integrated mixer section accommodates up to 5 low-impedance dynamic microphones (0.65mV / 4.7kΩ) and 2 auxiliary audio inputs (100mV / 470kΩ) for background music, playback players, or announcement tone generators. Output regulation remains tight at ≤ 2 dB from no load to full load at 1kHz, preventing volume fluctuation when routing multi-source inputs.

Booster Power Amplifier and System Expansion Deployments

In large-scale public address architectures requiring zone expansion or external signal processing, the SSA-160EM operates as a standalone mixer amplifier or as a slave booster power amplifier. System integrators can utilize the dedicated 1V / 50kΩ Line Input to drive the power amplifier stage directly from the line-level output of an external audio mixing console, DSP processor, or automated evacuation controller.

Line Out & Preamp Looping: The unit includes a 200mV / 600Ω Preamplifier Output and a 1V / 1kΩ Line Output to daisy-chain the mixed programme signal to downstream booster power amplifiers or feed external audio recording equipment.
Low-Impedance Installations: In addition to 70V and 100V taps, direct 4Ω and 8Ω low-impedance terminals support local foreground speaker clusters requiring lower distortion (140W RMS at 5% THD, 120W RMS at 2% THD).
Circuit Protection: A built-in resettable circuit breaker trips automatically during line short circuits or excessive speaker loading, protecting internal electronics from severe field wiring faults.

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