Atlas Sound PD75T – 75-Watt Compression Driver with 70V Transformer

Product Overview

The Atlas Sound PD75T is a fully environment-resistant 75-watt compression driver designed for large format horn speaker systems in expansive indoor and outdoor applications. Built for public address, music reproduction, and signaling in high-ambient-noise environments, this 70V compression driver delivers an extended plane wave frequency response of 100 Hz to 3.7 kHz with 116 dB average SPL. The integrated varnish-impregnated 70.7V multi-tap transformer and corrosion-resistant terminal connections make it a reliable choice for permanent outdoor PA installations and large-venue sound systems.

Product Description

The PD75T is engineered from the ground up for demanding large-format horn applications. Its magnetic structure components are machined to optimum tolerances, paired with a 2-inch voice coil for high power handling and consistent performance under continuous use. The unit incorporates a sound chamber and phasing plug for optimized dispersion and frequency response uniformity across the 100 Hz–3.7 kHz passband. The built-in varnish-impregnated multi-tap transformer provides taps at 2.36, 4.7, 9.4, 19, 38, and 75 watts for flexible system design, along with a 16-ohm bypass option for direct impedance matching. Corrosion-resistant terminals are protected by a transparent impact-resistant plastic cover, maintaining connection integrity in outdoor and harsh environments. The PD75T terminates in a standard 1-3/8"-18 thread male coupling for use with screw-on horns, and is also compatible with AtlasIED Model YDA-TH adapters for bolt-on large format horns. Diaphragms are field-replaceable (replacement model PD75TDIA is available separately). The housing combines a protective die-cast body with polycarbonate injection molded components finished in gray baked epoxy. UL1480A listed.

Key Features

• 75-Watt Power Rating — Full 75W continuous handling for high-output PA systems in stadiums, arenas, and large venues.
• Multi-Tap 70.7V Transformer — Six power taps (2.36, 4.7, 9.4, 19, 38, 75W) plus 16Ω bypass for maximum system flexibility.
• Environment-Resistant Construction — Corrosion-resistant terminals and varnish-impregnated transformer suitable for both indoor and outdoor installations.
• Extended Frequency Response — 100 Hz–3.7 kHz plane wave response with 116 dB average SPL for high intelligibility in noisy environments.
• Standard 1-3/8"-18 Thread Coupling — Screw-on horn compatibility; YDA-TH adapter enables bolt-on large format horn use.
• Replaceable Diaphragm — Field-serviceable diaphragm (PD75TDIA) reduces lifetime maintenance costs.
• UL1480A Listed — Meets UL safety requirements for fire alarm and emergency notification applications.

Typical Applications

• Outdoor stadium and arena PA systems
• Auditorium and large multi-purpose venue sound reinforcement
• House of worship main systems with large format horns
• Government and transportation facility public address
• Industrial facility paging and emergency notification
• Broadcast studio monitor and reference systems

Technical Specifications

Frequently Asked Questions

Q: What horns are compatible with the PD75T?

A: The PD75T uses a standard 1-3/8"-18 thread male coupling compatible with screw-on horns. For bolt-on large format horns, use AtlasIED Model YDA-TH adapters.

Q: Can the diaphragm be replaced in the field?

A: Yes. The PD75T diaphragm is field-replaceable with appropriate equipment. The replacement part number is PD75TDIA, available separately.

Q: Is this driver suitable for outdoor installations?

A: Yes. The PD75T is fully environment-resistant with corrosion-resistant terminals and a varnish-impregnated transformer, rated for both indoor and outdoor deployment.

Q: What power taps are available on the 70V transformer?

A: Available taps are 2.36, 4.7, 9.4, 19, 38, and 75 watts. A 16-ohm bypass is also provided for direct impedance matching.

Q: Is the PD75T UL listed?

A: Yes, the PD75T is UL1480A listed, qualifying it for fire alarm and emergency notification system use.

Q: What is the difference between PD75T and PD60AT?

A: The PD75T offers a higher power rating (75W vs. 60W) and an extended lower frequency response starting at 100 Hz vs. 100 Hz, with higher SPL output for larger venues.