Tannoy DS15i
Definition Install Series 15" Subwoofer


TANNOY's DS15i is a subwoofer designed to underpin DS8i- and DS12i-based front end systems. It combines a 15" (380mm) high-power professional driver in a substantially built 76 liter port-loaded cabinet.

The port-loading is via a low front slot, and gives immersive deep bass which allows close-to-wall placement.

Set into a 36mm front baffle, the DS15i sub driver is capable of handling 600 Watts of average power, 1200 Watts of program material, and remarkable 2400 Watt peaks. It achieves a class-leading 96 dB/Watt sensitivity, providing it with 130 dB peak SPL output. Capable of driving LFE or bass reinforcement in medium-to-large rooms all on its own, TANNOY recommends a pair of DS15i SUBs for even smoother base reproduction and (4) DS15i SUBs for those who demand the ultimate in smooth, deep, and impactful bass (citing Floyd E Toole, Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms).

Definition Install Series
The Definition Install range has been designed around the unique TANNOY Dual Concentric drive unit to bring class leading performance to a wide range of installation applications. From media rooms to the high performance home theatres, this comprehensive range of install loudspeakers delivers class-leading accuracy, sensitivity, and dynamics.

TANNOY DS15i Specifications:


  • Frequency Range¹: 36 Hz
  • System Sensitivity (1W @1m)²: 96dB (1W = 2.83V for 8 Ohms)
  • Dispersion (-6dB): 90 degrees conical
  • Driver Complement: 1 x 15.00" (380mm) bass driver
  • Rated Maximum SPL:
    • Average: 124dB
    • Peak: 130dB
  • Power Handling: Average: 600W
  • Program: 1200W
  • Peak: 2400W
  • Recommended Amplifier Power: 600W - 1200W @ 8 Ohms
  • Recommended Crossover: 70Hz - 300Hz, 24dB/octave
  • Recommended High-pass filter: 35Hz, 24dB/octave
  • Nominal Impedance: 8 Ohms
  • Distortion:
    • 10% Full Power (17.9V)
      • 2nd Harmonic
             › 40Hz: 0.28%
             › 100Hz: 0.29%
      • 3rd Harmonic
             › 40Hz: 2.26%
             › 100Hz: 0.60%
    • 1% Full Power (5.6V)
      • 2nd Harmonic
             › 40Hz: 0.19%
             › 100Hz: 0.13%
      • 3rd Harmonic
             › 40Hz: 0.39%
             › 100Hz: 0.02%


  • Enclosure: 76 liters, front baffle 1.37" (36mm), other panels 0.62" (15mm) MDF, internally braced
  • Finish: Black paint
  • Connectors: 2 x Binding posts
  • Fittings: 8 x M10 inserts
  • 4 x Rubber feet
  • Dimensions (HxWxD): 20.67" x 18.11" x 16.93" (525 x 460 x 430mm)
  • Weight: 66.1 lbs (30 kg)

¹ Average over stated bandwidth. Measured at 1 meter on axis.
² Unweighted pink noise input, measured at 1 meter in an anechoic chamber

Tannoy operates a policy of continuous research and development. Tannoy reserves the right to alter specifications and information without prior notification

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