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Tannoy DS15i Sub Passive Subwoofer

Tannoy DS15i Sub Passive Subwoofer

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Tannoy DS15i Sub Passive Subwoofer

The flagship passive subwoofer in the Definition Install range, the DS15i SUB combines low frequency power, speed and depth for a breath taking movie and and music experience. Designed to underpin systems based on the DS8i and DS12i at the front end, the DS15i combines a 380 mm (15.00”) high power professional driver in a substantially built 76litre port loaded cabinet. The port loading is via a low front slot, giving immersive deep bass and allowing close to wall placement during the install.

The DS15i SUB driver is set into a 36mm front baffle and is capable of handling 600Watt average power, 1200Watt programme material and enormous 2400Watt peaks. The DS15i SUB achieves a class leading sensitivity of 96dB/Watt, giving it 130dB peak SPL output. Capable of driving LFE or bass reinforcement in a medium to large rooms on its own, Tannoy recommends a pair of DS15i SUB’s for even smoother base reproduction and four DS15i SUB’s for those demanding the ultimate is smooth, deep and impactful bass. (citing Floyd E Toole, Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms).

Finished in rugged textured black paint, the enclosure is fitted with recessed, gold plated binding posts, eight M10 inserts for off-floor mounting and four rubber feet. The DS15i SUB offers class-leading performance and is the perfect partner to any high-specification Definition Install system.


DS15i sub


Frequency Range 136 Hz

System Sensitivity (1W @1m) 2 96dB (1W = 2.83V for 8 Ohms)

Dispersion (-6dB) 90 degrees conical

Driver Complement 1 x 380mm (15.00”) bass driver

Rated Maximum SPL Average: 124dB

Peak: 130dB

Power Handling Average: 600W

Programme: 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 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) 525mm x 460mm x 430mm (20.67" x 18.11” x 16.93”)

Weight 30kg 

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