010513AVM027

AVSA review, May 2013

standard, but that its specifications simply recognise that many home users will be operating their systems in more compact rooms. The 750 THX system’s three front speakers follow a so-called LCR design approach, which essentially means that the three speakers — front left, centre and front right — are identical for all intents and purposes. This not only allows a homogenous tonal character across the entire front stage, but the matched voicing ensures superior front-channel integration and a potentially seamless delivery. The technical highlights of the LCR-750THX speakers employed for the front three channels include MK’s phase-focussed crossover design, which operates in conjunction with an angled tweeter. According to MK, the crossover was created after close analysis of the speaker’s response in the time as well as the frequency domains, in both vertical and horizontal axes, with the objective of achieving a flat on-axis and off-axis response. The result is a crossover that allows optimised driver response and dispersion characteristics. With two mid/bass drivers, both power delivery and efficiency are enhanced to the overall benefit of dynamic range, despite the compact dimensions of the enclosures. The tweeter is mounted at a 4.7 degree inward facing angle as part of the MK system’s overall emphasis on optimised imaging on and off-axis. The centre channel version of the LCR-750THX satellites is essentially identical in specification and execution, but has been optimised for the horizontal location typically employed in home cinemas. With the three drive units in the centre-channel being identical to those in the front main satellites, coherent voicing and an evenly integrated sound field across the entire front soundstage is ensured, while the dynamic range also promises the clear projection of all-important dialogue. The surround duties in the 750 THX system are performed by a pair of Surr 55 Tripoles — surprisingly compact units designed to be located on the wall to each 2 6 m a y av 2 0 1 3 side of and above the listening position. The surrounds are timbre-matched to the front speakers, and combine a pair of 75 mm paper-coned drivers in a dipole configuration, with a direct-firing 133 mm mid/bass unit, and a 25 mm soft-dome tweeter. The tripole design allows a diffuse sound field that assists in recreating space and ambience, while also retaining the trademark MK emphasis on accuracy and clarity. The final component of the 750 THX system is the SB 1250 THX subwoofer. Generously proportioned without being overly intrusive, the MK sub’s enclosure is home to a long-throw 300 mm paper cone driver, linked to a power amp rated at a continuous 250 watts. The sub offers versatile system connection options, including stereo high-level (speaker) inputs and outputs, as well as line-level stereo/mono linelevel RCA inputs and outputs, the latter allowing the daisy-chaining of more than one sub if required. In the interests of effective subwoofer integration, the SB1250 provides a phase COVER FEATURE


AVSA review, May 2013
To see the actual publication please follow the link above