Tannoy System 12 (Years Unknown)
Overview
The Tannoy System 12 isn’t subtle. It’s a full-range point source studio monitor built around a 12-inch Dual Concentric driver, a design philosophy that places the tweeter at the center of the woofer to create a single, coherent sound source. This co-axial configuration—marketed as in later versions like the System 12 DMT and DMT II—was Tannoy’s signature for decades, and the System 12 stands as one of its most physically imposing expressions.
While precise production dates remain undocumented, the System 12 It was built in the UK, and its construction reflects the no-compromise ethos of the time: a hefty cabinet with a 70-litre internal volume to support deep, controlled bass from the 12-inch driver. At approximately 745 x 520 x 390 mm in shipping dimensions, these are not bookshelf speakers—they are statement pieces, designed to be seen and heard from across a room.
Despite the lack of published frequency response, sensitivity, or crossover data, the System 12’s reputation rests on its sonic character. The Dual Concentric array ensures time-aligned wavefronts, reducing phase distortion and enhancing stereo focus—a trait
Specifications
| Manufacturer | Tannoy |
| Product type | Studio Monitor |
| Driver size | 12 inch |
| Design | co-axial design |
| Design | 12” Dual Concentric |
| Recommended Amplifier Power | 50 to 300 watts |
| Cabinet Internal Volume | 70 litres |
| Shipping Dimensions | Approximately 745 x 520 x 390 mm |
Key Features
12” Dual Concentric Co-Axial Design
The heart of the System 12 is its 12-inch Dual Concentric driver, a co-axial design where the high-frequency section is acoustically centered within the woofer. This arrangement creates a point-source radiator, ensuring that all frequencies originate from the same physical location. The result is exceptional time coherence and a stable stereo image, even off-axis—critical for engineers moving around a control room. This design minimizes lobing and phase anomalies common in multi-driver systems, delivering a more natural soundstage.
Full-Range Point Source Operation
Marketed as a "full-range point source Dual Concentric DMT," the System 12 aims to reproduce the entire audible spectrum from a single driver array. This eliminates the need for complex crossover networks between separate drivers, reducing intermodulation distortion and phase shifts. While the exact crossover frequency and filter slopes are not documented, the integration of midrange and treble within the coaxial structure suggests a seamless transition,
High-Power Handling and Studio-Grade Build
Rated to handle between 50 and 300 watts, the System 12 was built for high SPL environments. Its 70-litre cabinet provides ample loading for the 12-inch driver,
Collectibility & Value
A pair of Tannoy System 12s recently sold for US $1,600, according to a verified listing. The sale noted they were "tested and working wonderfully," with particular praise for their clarity and imaging. As with many vintage Tannoy monitors, condition is paramount—original drivers, undamaged cabinets, and functional crossovers (if present) significantly affect value. No data exists on common failures or maintenance requirements, but
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