Tannoy TD-300A/C (circa 1997)
The Tannoy TD-300A/C (listed in at least one period source as the TD-300AC) is a compact tower speaker from the Definition Series. It was introduced around 1997 at ¥100,000 per unit. Documentation is thin, and nearly everything known about it comes from a single Japanese specification listing.
The listing describes a 2-way, bass-reflex tower built around a 16.5cm (6.5-inch) coaxial driver, which is Tannoy's signature configuration. The driver uses a dual-magnet system to give the right magnetic flux to both the high and low-frequency sections. The tweeter has an ultra-precision molded "TechnoWave" guide. It is shaped so the distance from the diaphragm surface to the edge is equal at all points, which improves high-frequency phase characteristics. The woofer cone is a polyolefin co-polymer LF type, molded by ultra-precise CNC injection. Its thickness increases gradually from the outer edge toward the center, which adds rigidity and suppresses break-up vibration.
The enclosure is a deformed hexagonal structure with no opposing parallel planes, aimed at suppressing standing waves at specific frequencies. It is built from 18mm MDF, reinforced internally with an inner carcass, and finished in American cherry veneer. A terminal panel supports bi-wiring and bi-amping as well as standard connection. Four spikes are included as accessories.
Specifications as documented:
- Type: 2-way, 1-speaker, bass-reflex tower
- Full-range unit: 16.5cm coaxial cone type
- Frequency response (±3dB): 42Hz – 30,000Hz
- Sensitivity (1kHz): 88.5dB/W/m
- Maximum input (instantaneous): 200W
- Continuous input (RMS): 85W
- Impedance: 8Ω
- Crossover frequency: 1,800Hz
- Enclosure volume: 22.5L
- Dimensions (W×H×D): 251 × 829 × 222mm
- Weight: 14.5kg
No production run dates, market reception or collector pricing have surfaced, and no period reviews of this model have been located. The Japanese audio archive audio-heritage.jp is the only known source for the speaker's existence and specifications.
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