We’ve endowed Contour 30 with two 18cm MSP drivers, as well as doubling up on the rear ports. Behind the scenes we’ve tweaked the spider suspension (the springy ring that keeps the woofer in the right place when it’s at rest, and controls it in the right way when it’s moving). This one is made from aramid fibres, and retains the ingenious structural properties from before (the ribs are of varying width to give even finer control over the cone’s excursion).

Contour 30i continues to use aluminium voice-coils, too. We can make them extremely light – but also bigger than the old-style copper units you’ll find elsewhere. Lighter weight allows larger diameters with more windings, yet low weight, which means we have more control over the cone movement. And that means more control over the sound – especially at high frequencies and high volumes – exactly what you need in a mid/bass driver. Sure, we experimented with small voice-coils on Contour – the size other companies might use. The measurements said they should work for Contour. Our ears said otherwise, so we went big. Our ears were right.

And, as with Contour 20i, the flatter frequency response from the improved tweeter and mid/bass drivers means we’ve been able to simplify the crossover. Not that it wasn’t elegant before – but now… well, we’ll let you judge.