Loudspeakers

A free download for iOS and Android, the Perlisten Subwoofer app enables full control of the D15s, from basic setup to advanced calibration. Operating over Bluetooth for a fuss-free connection, it presents its tools in a mostly intuitive manner, fronted by a ‘home page’ showing a Master Level setting. The app can manage up to eight subs in total, individually named if desired so you might have ‘front left’ and ‘front right’ in a home cinema setting.

Controls are grouped onto separate screens, so the app remains uncluttered on a smartphone. ‘EQ’ offers THX, Small Room and Big Room bass roll-offs, the first of these recommended as ‘the best starting point’, while ‘Crossover’ has settings for low-pass filter, phase and a (0-100ms) time delay. ‘Trim’ allows ±3dB adjustment of individual subs in a multi-sub system, and ‘Input Control’ manages gain settings for the sub’s RCA and XLR inputs. There’s also an Auto Turn On function, in addition to a user-defined standby timer on the ‘Setup’ page. Lastly, ‘PEQ’ offers custom adjustment of gain, Q factor and frequency across ten bands. As with its time delay tool, Perlisten recommends the use of REW room measurement software to calculate the necessary settings.