“High resolution audio perfect for the most demanding architectural installations and dedicated home theatres” — that’s the promise of Meridian Audio’s DSP750 in-wall digital active loudspeakers.

The DSP750 takes its place as Meridian’s highest performer among its architectural loudspeaker range, delivering a maximum output of 120dB at 1 metres, with bass extension to 30Hz (no envelope stated) and high frequency extension to 40kHz assisted by a high-performance beryllium tweeter.

The DSP750 operates in a 100mm-shallow sealed aluminium cabinet 123cm high and 20cm wide, with a metal mounting frame and a purpose-built ‘rough-in wall-box’ available separately, all adjustable for various wall materials and depths. The paintable perforated front steel grille is then slightly larger at 125 x 22cm, held in place by powerful rubber-coated magnets that attach to the aluminium extrusion that forms the front panel of the loudspeaker enclosure.

This houses five drive units of three new high-performance designs — two 160mm long-throw high-output woofers with titanium voice coils, two 100mm polypropylene midrange drivers, and that custom tweeter with beryllium dome and diffraction expansion technology which promises to turn the listening room into “one large sweet-spot” thanks to controlled directivity, wide dispersion and consistent off-axis response.The DSP750 operates in a 100mm-shallow sealed aluminium cabinet 123cm high and 20cm wide, with a metal mounting frame and a purpose-built ‘rough-in wall-box’ available separately, all adjustable for various wall materials and depths. The paintable perforated front steel grille is then slightly larger at 125 x 22cm, held in place by powerful rubber-coated magnets that attach to the aluminium extrusion that forms the front panel of the loudspeaker enclosure.

This arrangement of drivers means the DSP750 can be used horizontally in stereo for a soundbar application; a three-way selector switch on the front can be switched to ‘L+R’ for this mode, which is further assisted by Meridian’s Centre Elevation technology, which raises the perceived image location from an under-screen loudspeaker so that it appears to come from the centre of the screen.

This is an active loudspeaker, with each of the five drive-units powered by a bridged pair of high-res power amplifiers, each pair capable of delivering over 100W into eight ohms. Phase-linear DSP crossovers ensure the drive-units remain in phase with each other across their crossover regions, while Meridian says the DSP engine also provides thermal and dynamic bass protection while retaining very accurate transients, ensuring that when the loudspeaker is played at high levels – even over prolonged periods of time – it always delivers a clean, detailed and accurate sound.

The speaker receives its signal via Meridian’s SpeakerLink RJ45 connection, which allows the use of simple Cat-5 cable to deliver the digital signal from a processor, each speaker having one input and one output for chaining the signal on. Meridian’s proprietary technologies are brought to bear on this digital input, including FIFO buffering, DSP upsampling, apodising filters and MHR (Meridian High Resolution).

A webinar on the new DSP750 by Meridian’s Hugo Fitzjohn and Barry Sheldrick can be viewed here below.

More information: Cogworks