Tannoy CPA-15
A contractor-grade PA box that Tannoy built to be driven hard, hung on a wall, and forgotten about until the day you actually need it.
Overview
When Tannoy went after the public-address market, it did so with the CPA Series - Contractor Public Address loudspeakers. The trade press of the day noted it was the company's first real push into that market. Sound and Communication (May 1991, p.108) reported the launch plainly: the CPA Series was Tannoy's "first effort to enter the P.A. market." Mix (September 1991, p.120) covered the same line under its live-sound reinforcement new-products banner. It identified the series as Contractor Public Address loudspeakers distributed out of Kitchener, Ontario for the North American market.
The CPA-15 sits at the top of that range as the full-size box. You spec it when the room is big and the job is reinforcement rather than reproduction. It is not a hi-fi speaker in a rugged jacket. It is a working tool, and Tannoy treated the whole CPA line as a system. By 1991 the range had grown to include the CPA 15.2, a dedicated sub-bass bin built to sit underneath the full-range CPA cabinets. Studio Sound (August 1991, p.36) described the 15.2 as a compact reflex sub using two 15-inch long-throw transducers operating down to 26 Hz. It was designed to run off an active crossover, with a recommended crossover point somewhere between 125 Hz and 300 Hz, and the enclosure used DMT construction. The stated application was sub-bass support for the CPA 12 and CPA 15. That tells you how the CPA-15 was meant to be deployed: as part of a stacked, actively crossed system, not as a standalone full-range box.
By early 1991 Tannoy was already showing the CPA range at trade events. The CPA-15FM, an on-stage monitor variant, was on display alongside the 15.2 bass bin as part of the Contractors PA lineup. Studio Sound (February 1991, p.36) listed the complete studio monitor range alongside the Contractor PA loudspeakers "supplemented by the CPA 15.2 bass bin and the CPA 15FM on-stage monitor." A dedicated floor-monitor version of the same box shows the cabinet was built in variations for different jobs, with the same driver philosophy underneath.
That philosophy is dual-concentric. Tannoy put the high-frequency unit at the throat of the low-frequency cone so both radiate from effectively the same point, and the CPA line carried that approach into reinforcement. The 15-inch dual-concentric driver is the heart of the CPA-15, and it is why the box interests collectors now rather than merely being useful. A point-source 15 in a rugged contractor cabinet is a very different animal from the horn-and-woofer stacks that dominated PA racks in the early nineties.
The CPA-15 had a working life measured in years, not decades. The line was superseded in the mid-nineties, and the replacement is documented. Studio Sound (March 1997, p.38) reported that Tannoy's new i15 was "a replacement for the CPA15," with a new 15-inch dual-concentric driver, double-roll cambric suspension and halogen HF protection. That line is the most concrete dating evidence available for the CPA-15. It was still the current model being replaced as of early 1997, which places its production in the early-to-mid 1990s. The 1997 "What's New" trade listing carries the same note, the i15 as a replacement for the CPA15. It adds that the T40 sub-bass companion for the T12, i12, and i15 systems uses a 15-inch driver in a rugged transportable cabinet with handles and pole mounts.
That last detail describes the design language of the family the CPA-15 belonged to: transportable, handle-equipped, pole-mountable. These boxes were meant to be carried by two people, flown or pole-mounted, and beaten up in service. Survivors tend to show it. Cosmetic wear, scuffed corners, replaced grille cloth, and the occasional re-coned driver are the norm. That fits contractor gear that spent its working life in rental inventories, houses of worship, clubs, and AV installs.
The CPA-15 is not a collector's trophy the way a Monitor Gold or a Westminster is. It is a working loudspeaker from a working range, and collector interest in it is practical rather than nostalgic. The people who seek them out are usually after the dual-concentric 15 for a specific job: a point-source reinforcement box, a center channel for a large-format system, or a pair of efficient full-range cabinets for a room where a modern line array would be overkill and under-toned. The value is in the driver and the cabinet's willingness to take abuse, not in rarity.
Documentation on the CPA-15 specifically is thin. The model appears in period trade coverage as part of the CPA Series and as the reference point for the 15.2 sub and the 15FM monitor. Standalone spec sheets for the base CPA-15 cabinet are not present in the available record, and frequency response, sensitivity, power handling, impedance, and physical dimensions for the exact CPA-15 are not confirmed here. Anyone buying one should verify the driver complement and cabinet condition directly rather than relying on a spec sheet. The CPA line spanned multiple cabinet configurations, and the 15.2 and 15FM are distinct products that should not be confused with the base CPA-15.
The CPA-15 is a footnote in Tannoy's catalog. It marks the point where a company famous for point-source monitors took that same driver philosophy into the contractor market, with a range that included a dedicated sub and a dedicated stage monitor. The i15 that replaced it is the better-documented box.
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