There is Sub a better choice.- Google Patents US9690271B2 - Speaker calibrationĭownload PDF Info Publication number US9690271B2 US9690271B2 US14/696,014 US201514696014A US9690271B2 US 9690271 B2 US9690271 B2 US 9690271B2 US 201514696014 A US201514696014 A US 201514696014A US 9690271 B2 US9690271 B2 US 9690271B2 Authority US United States Prior art keywords calibration playback device displaying prompt playback Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. The Sub Mini has more than enough power to provide a rewarding experience for listeners of all types of content (movies, music, games…) but it is not the optimal match for customers who like to listen at very high volume levels or who listen in large rooms.
The trade-off with a small, sealed cabinet is obviously the maximum sound pressure level. We ended up with a sealed cabinet which, together with an advanced DSP, gave us a sound product with surprisingly deep frequency response (for the size). Early in the development we tested many acoustic designs, including bass reflex and passive radiator systems. When we began the development of the Sub Mini, we knew we wanted a similar frequency response to the Sub, but that we also wanted this in a smaller cabinet with a lower output level than the Sub has. Bass response does not scale linearly with cabinet size, and even small changes in acoustic volume can require significant changes to the drivers and electronics to achieve a good sound experience. “Developing a small subwoofer is always challenging. And why has it taken so long? Sam answers: We were very interested to hear about the challenges of building a small subwoofer like the Sub Mini.
Sam Feine has had primary responsibility for the development of the Sub Mini from an acoustic standpoint, and is part of the team that thinks out, sketches and develops Sonos’ audio products, and then fine-tunes the sound to perfection. The Sub Mini’s frequency range goes down to 25 Hz, which is the lowest frequency at which we feel it has a significant sound level,” Sam Feine, Sonos audio engineer, tells us in an email. The main difference is how powerful the sound pressure they can achieve. “Despite its smaller size, the Sub Mini has similar frequency response to the larger Sub.
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