150 Series THX Tripole for direct and diffuse surround at once
MK Sound S150T is a Tripole surround with a 5.25-inch front woofer, 1.1-inch tweeter and two 3.5-inch side drivers.
MK Sound S150T belongs to the 150 Series and is designed for side or rear channels in 150 Series systems. Proprietary Tripole technology combines direct and lateral radiation to preserve localisation and envelopment close to listeners. The product is supplied as a pair. The proprietary Tripole configuration conceptually combines several radiating sources in one cabinet: the front supplies localised information while the sides broaden ambient energy. It addresses the unusually close placement of surround speakers relative to listeners.
Key features
- Proprietary Tripole technology.
- 5.25-inch front woofer.
- 1.1-inch front tweeter.
- Two 3.5-inch side drivers.
- 80 Hz-20 kHz response and 86 dB sensitivity.
- Recommended amplifier power of 5-200 W.
- Timbre matched to S150.
- Supplied as a pair.
Acoustic design
The front uses a 5.25-inch woofer and 1.1-inch tweeter, while two 3.5-inch side drivers generate the diffuse component. Response is 80 Hz-20 kHz, with 86 dB sensitivity and 4-ohm impedance. S150T uses the same high-frequency design as the S150 family to preserve voice matching with the three front channels. Twin 3.5-inch side drivers work with the front section without turning the surround into an easily identifiable point source.
Tripole technology
The surround field combines precise discrete effects with a broader ambient component than a conventional monopole. This approach is especially useful on side or rear walls close to seating. The pair is intended for side or rear walls. Each speaker weighs 4.8 kg and the tapered shape reduces its frontal footprint; installation can spread effects across several seats while retaining both precision and ambience.
Crossover and timbre matching
Drivers and crossover technology are matched to S150 to preserve timbre consistency between front and surround channels. Integration is designed so the lateral drivers are not perceived as separate sources.
Installation and dimensions
The cabinet measures approximately 27 x 26.5/16.5 x 15 cm and weighs 4.8 kg per speaker. Its tapered shape is specific to wall-mounted surround use.
Construction and finishes
The sealed cabinet houses dedicated side sections. It is available in Black or White Satin and is supplied as a pair.