The AtlasIED AF140 is a professional 150-watt autoformer designed to match loudspeaker loads to power amplifier outputs in commercial and professional sound systems. Featuring a single-coil design with multiple taps, the AF140 provides flexibility when connecting speaker loads to amplifiers that require specific impedance matching.
Unlike a conventional fixed-ratio transformer, the AF140 uses multiple winding taps to accommodate different loudspeaker and amplifier configurations. This makes it a practical component for professional audio installations where proper load matching is essential for reliable amplifier operation.
A single AtlasIED AF140 supports loads up to 150 watts. For applications requiring greater power handling, AtlasIED specifies that two AF140 units can be connected in series to increase power handling capacity to 300 watts.
The AF140 is suitable for professional sound reinforcement, commercial audio systems, and specialized loudspeaker installations requiring transformer-based impedance matching.
Flexible Speaker-to-Amplifier Impedance Matching
The AtlasIED AF140 features a single-coil autoformer design with multiple taps, allowing installers to match compatible loudspeaker loads to amplifier outputs.
Proper impedance matching is important when designing professional audio systems because an unsuitable speaker load can affect amplifier performance or trigger protection circuitry.
The AF140 provides a flexible solution for installations requiring different impedance relationships between amplifiers and connected loudspeakers.
Because the AF140 is an autoformer rather than an isolation transformer, its input and output connections share a common winding.
Installers should select the appropriate taps according to the amplifier specifications, connected speaker load, and AtlasIED installation documentation.
150-Watt Power Handling
A single AtlasIED AF140 is rated for 150 watts, making it suitable for compatible professional and commercial loudspeaker applications.
For systems requiring additional capacity, AtlasIED specifies that two AF140 autoformers can be connected in series to support up to 300 watts.
The 300-watt configuration requires two units and should be implemented according to the manufacturer's wiring instructions.
Designed for Professional and Commercial Audio
The AtlasIED AF140 is intended for sound system installations where loudspeaker impedance matching is necessary.
Typical applications include:
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Commercial sound reinforcement systems
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Professional loudspeaker installations
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Speaker-to-amplifier impedance matching
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Specialized audio system configurations
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Commercial and institutional sound systems
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Existing audio system upgrades requiring load matching
AtlasIED AF140 Key Features
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150-watt single-coil autoformer
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Multiple taps for flexible impedance matching
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Designed to match loudspeaker loads to power amplifier outputs
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Supports compatible professional and commercial sound systems
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Two units can be connected in series for 300-watt power handling
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Frequency response of 30 Hz–15 kHz
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Compact component for integration into compatible audio installations
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Manufacturer-listed 60-month warranty
AtlasIED AF140 Technical Specifications
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Specification
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Details
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Manufacturer
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AtlasIED
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Model
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AF140
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Product Type
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Audio Autoformer
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Design
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Single-Coil Autoformer
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Tap Configuration
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Multiple Taps
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Power Rating
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150 Watts
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Two-Unit Series Configuration
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Up to 300 Watts
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Frequency Response
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30 Hz–15 kHz
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Height
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4 1/8" (10.4775 cm)
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Width
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3 7/16" (8.73252 cm)
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Depth
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1 3/8" (3.4925 cm)
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Shipping Weight
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7.00 lbs (3.18 kg)
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Warranty Period
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60 Months from Date of Purchase
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Typical Applications
Commercial Audio Installations
The AF140 can be used in compatible commercial sound systems requiring loudspeaker load matching.
Professional Sound Reinforcement
Its multiple-tap design allows technicians to configure appropriate impedance relationships between amplifiers and loudspeaker loads.
Existing Audio System Upgrades
The AF140 may provide a solution when integrating speakers and amplifiers with different impedance requirements.
Specialized Speaker Installations
The autoformer can be incorporated into audio system designs requiring transformer-based impedance matching and appropriate power handling.
Why Buy the AtlasIED AF140 from Audio Supply?
At Audio Supply, we specialize in professional audio equipment and installation components for commercial sound systems.
The AtlasIED AF140 provides a flexible solution for matching loudspeaker loads to amplifier outputs, making it a useful component for specialized professional audio installations.
Whether you're designing a new sound system or updating an existing installation, Audio Supply can help you identify compatible audio equipment and accessories.
Need Help Matching Speakers to an Amplifier?
The AtlasIED AF140 provides multiple taps for matching compatible loudspeaker loads to amplifier outputs.
Correct tap selection and wiring depend on the amplifier, speaker impedance, and system configuration.
Contact Audio Supply for assistance selecting compatible amplifier and loudspeaker equipment for your installation.
