Tannoy SUB12I
Definition Install 12" Subwoofer


The Definition Install DS12i sub has been designed to underpin a Definition install theatre or media room system with truly remarkable low frequency performance.

Massively constructed around 300mm (12.00”) professional drive unit, this subwoofer will produce the ultimate soundtrack experience, with spectacular and thunderous bass, yet still be agile enough to maintain finer musical detail with precision and speed.

The DS12i sub is compact enough to bring class leading performance to a wide range of installation applications; from media rooms to home theatre and boardrooms through to high end marine interiors.

This 38 litre direct radiating design is robustly constructed MDF enclosure, using 15mm (0.62”) for the panels and 16mm (1.37”) for the front baffle.

Extensive internal bracing minimises panel resonance ensuring a tight and responsive bass performance. Capable of achieving 38Hz and with a sensitivity of 94dB (1W = 2.83V for 8 Ohms) the DS12i sub will deliver an SPL of 126dB peak. Recommended amplifier power is 400 - 800W @ 8 Ohms.

Finished in rugged textured black paint, the enclosure is fitted with two binding posts, eight M10 inserts and four rubber feet.


  • 1 x 300mm (12") high power handling direct radiating bass driver
  • Immensely rugged 38 litre MDF enclosure is internally braced, with 15mm (0.62") panels and a 36mm (1.37”) front baffle
  • Power handling 800W programme
  • Sensitivity 94dB (1W = 2.83V for 8 Ohms)
  • Rated SPL 126dB peak
  • 2 x binding post connectors, 8 x M10 inserts and
  • 4 x rubber feet


  • Frequency Range 1  38 Hz
  • System Sensitivity (1W @1m) 2   94dB (1W = 2.83V for 8 Ohms)
  • Dispersion (-6dB)  90 degrees conical
  • Driver Complement  1 x 300mm (12.00”) bass driver
  • Rated Maximum SPL  Average: 120dB | Peak: 126dB
  • Power Handling  Average: 400W | Programme: 800W | Peak: 1600W
  • Recommended Amplifier Power  400W - 800W @ 8 Ohms
  • Recommended Crossover  80Hz - 300Hz, 24dB/octave
  • Recommended High-pass filter 40Hz, 24dB/octave
  • Nominal Impedance  8 Ohms


  • Enclosure  38 litres, front baffle 36mm (1.37") other panels 15mm (0.62") MDF internally braced.
  • Finish  Black paint.
  • Connectors  2 x Binding posts
  • Fittings  8 x M10 inserts | 4 x Rubber feet
  • Dimensions (HxWxD)  17.10" x 14.60" x 14.00"
  • Weight  46.3lbs
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