The secret of the Mythos’ skinny dimensions is Definitive Technology’s XTDD drivers. Using computer modelling, the company’s audio boffins managed to squeeze them down to ultra-compact dimensions by eliminating every last bit of wasted space and maximising their surface area. What’s more, the magnets for each driver protrude from the rear to minimise the depth further.
Each speaker features two of these 90mm XTDD anodized aluminium dome mid/bass drivers, pressure coupled to four 90mm bass radiators (to help deliver deeper bass response than would otherwise be possible) and a centre-mounted, 25mm pure aluminium dome tweeter, the same one found inside the company’s high-end Mythos ST SuperTower.
Frequency response is quoted as 92Hz – 30kHz, with a sensitivity rating of 92dB - so clearly the addition of a sub is required to fill out the bottom end. The company reckons they’re suitable for amps of up to 100W per channel and recommends you set it to ‘small’.
How easy the XTR-50s are to install pretty much depends on the quality of your DIY skills – with all the hardware in the box, clearly written instructions and a fairly self-explanatory feel to the process, it shouldn’t really be a challenge.
Connecting speaker cables is a little more fiddly than we’re used to though. On the back of each speaker is a two-pin terminal, into which you have to plug in a small attachment that sports screws to hold the wires in place, but this little gizmo never really felt like it was in place securely. Such a fiddly connection method is understandable given the problems that traditional binding posts would create for wall-mounting.