Description
Key Features
- Dual Concentric construction — the high-frequency compression driver is mounted behind the low-frequency unit’s magnet, sharing the same magnetic circuit and firing through a horn integrated into the bass cone, so that both frequency ranges originate from a single coincident point source
- 51mm (2″) aluminium dome compression driver for the high-frequency section, coupled through a “Pepperpot” phase plug for even dispersion
- 380mm (15″) paper diaphragm low-frequency cone — a large, high-sensitivity design well suited to horn-loaded and large infinite baffle enclosures
- High sensitivity output makes these drivers a natural match for valve amplification as well as moderately powered solid-state amplifiers
- A design with a strong historical pedigree — used extensively in 1970s recording studio monitoring, including reported use at Abbey Road, and in high-end domestic horn-loaded loudspeakers such as the Tannoy Lancaster, GRF, and Autograph
- Genuine period Tannoy Monitor Gold badging visible on the rear casting of both units
Technical Specifications
(Source: Verified vintage Hi-Fi reference data, cross-referenced across multiple sources)
- Type: 15″ Dual Concentric coincident-source driver
- Model: LSU/HF/15/8
- Low Frequency Diaphragm: 380mm (15″) paper cone
- High Frequency Driver: 51mm (2″) aluminium dome compression driver
- Crossover Frequency: 1,000Hz
- Frequency Response: 23Hz–20,000Hz
- Sensitivity: Approximately 92dB
- Nominal Impedance: 8Ω (5Ω minimum)
- Power Handling: 50W
- Free Air Resonance (Fs): 26Hz
- Weight: Approximately 10kg per driver
- Country of Origin: United Kingdom (Tannoy, London)
- Year of Production: Late 1960s (Monitor Gold range, launched 1967)
Important Note
These drivers are sold as a pair of standalone units, not fitted within cabinets. As with any vintage driver of this age, careful handling during transport and installation is advised. Buyers building or restoring an enclosure for these should ensure an appropriate cabinet design and crossover components are used to get the best from them — we’re happy to discuss further if helpful.
Why Buy From Us
With over 40 years of experience in the Hi-Fi industry, we are well placed to assess and test vintage drive units of this type. Every item we list is fully tested before sale — this pair was checked by Andrew in our workshop.
When you buy from us you can expect:
- Full testing prior to listing — not simply a visual check
- Transparent descriptions with no omissions
- Professional packaging to ensure safe delivery
- After-sales support available by phone or email should you have any questions
Summary
The Tannoy Monitor Gold LSU/HF/15/8 is a genuinely significant vintage driver with a strong following among enthusiasts building or restoring classic horn-loaded Tannoy enclosures. This pair has been fully tested and is in good vintage condition, offered as standalone drivers ready for a new cabinet or restoration project. This is a matched pair listed as a single lot. Please feel free to get in touch with any questions prior to purchase.
