Emergency Signaling Horn Loudspeaker w/25V/70.7V-15W Transf/Cap Line Sup

The AtlasIED AP-15TUC is a 15-watt RMS emergency signaling horn loudspeaker built around a compression driver. Its combination of 106 dB sensitivity, 70° dispersion, and a 400 Hz to 14 kHz frequency response is intended to deliver superior intelligibility with strong sound projection and penetration. A transformer and integrated capacitor support distributed-system connection and speaker-line supervision, giving the model a focused role in emergency signaling installations.

Ideal Use Cases

The AP-15TUC is suited to emergency signaling systems that need a directional horn loudspeaker and the ability to verify that the speaker line is functioning. Its 70° dispersion provides a defined coverage pattern, while the compression driver and 15-watt RMS capability support concentrated acoustic output. It is a practical choice when monitored line operation is part of the system design rather than an optional afterthought.

Multiple 70.7V power taps make the model useful when different output levels are required across an installation. Available settings are 1, 2, 3.8, 7.5, and 15 watts. This lets the system designer select a lower tap where less output is appropriate or use the full 15-watt setting where maximum rated power is needed.

Why Choose This Model

The central advantage is the balance of output capability and intelligibility. Sensitivity is rated at 106 dB, and the horn covers frequencies from 400 Hz through 14 kHz. Together with the compression driver, those specifications support the product’s stated goal of maximum sound projection and penetration. The 70° dispersion specification also gives installers a concrete coverage value for positioning the horn.

The integrated capacitor is another key reason to select the AP-15TUC. It allows connection to a monitoring system so the speaker line can be checked for proper function. For an emergency signaling product, this supervision capability directly addresses system awareness without requiring the horn to operate as a basic, unmonitored endpoint.

Installation and Integration

The product title identifies a 25V/70.7V transformer configuration, while the published tap values are specified at 70.7V. Those 70.7V taps include 1, 2, 3.8, 7.5, and 15 watts. This range supports level selection during integration while retaining the option to operate at the speaker’s full 15-watt RMS rating. The monitoring-system connection is supported by the built-in capacitor for speaker-line supervision.

Physical dimensions are 8 3/4 inches high, 7 7/8 inches wide, and 9 5/16 inches deep, equivalent to 22.22 by 20.00 by 23.66 cm. The listed shipping weight is 5.00 lb, or 2.27 kg. The published operating temperature range is 40 to 70C. These values provide the core information needed to account for space, shipping weight, and stated environmental operating limits.

Performance Highlights

The AP-15TUC handles up to 15 watts RMS and uses a compression driver for emergency signaling duty. Its 106 dB sensitivity is paired with 70° dispersion, helping concentrate output within a specified pattern. Frequency response extends from 400 Hz to 14 kHz. Rather than offering only one transformer setting, the five published 70.7V tap choices allow the output allocation to be matched to the intended system position.

What Makes It Different

This model combines three clearly defined functions in one horn loudspeaker: emergency signaling output, selectable transformer taps, and line-supervision support. The integrated capacitor is the distinguishing integration feature because it enables connection to a monitoring system that can verify speaker-line operation. At the same time, the compression driver, 15-watt RMS power handling, and stated sensitivity provide the acoustic foundation for intelligible, penetrating projection.

The specification set is straightforward and application-focused: five 70.7V taps, a 70° dispersion angle, a 400 Hz to 14 kHz response, and dimensions supplied in both imperial and metric units. The product is also covered by a warranty period of 60 months from the date of purchase.

Final Assessment

The AtlasIED AP-15TUC is a purpose-specific choice for emergency signaling systems that require a horn format, selectable distributed-audio power levels, and monitored speaker-line capability. Its 15-watt RMS handling, 106 dB sensitivity, 70° dispersion, and compression-driver design define its performance, while the integrated capacitor supports supervision. For installations built around these requirements, it offers a concise combination of acoustic projection, tap flexibility, and line-status integration.