DSP640 In-Wall Digital Active Loudspeaker
Why compromise?

The DSP640 in-wall loudspeaker is perfect for delivering high quality music discretely in any living or cinema room. Incorporating the latest audio enhancing technologies from Meridian’s floorstanding loudspeakers including Enhanced Bass Alignment (EBA) and Centre Elevation, the DSP640 provides incredibly lifelike and spacious sound. This makes the DSP640 a perfect choice for stereo or full surround and with an ultra-narrow box design, ensures that there is virtually no visual impact to the decor.

 

Key Features

Outstanding performance that delivers a maximum output level of 117dB, perfect for theatre applications.

Wide range drive units for effortless dispersion and imaging, coupled with minimum unwanted diffraction.

Centre elevation adjustment technology for an incredibly lifelike listening experience.

Fireproof back-box with frame system for easy installation and compact 100mm mounting depth.

We are the
masters of Digital Signal Processing

Find out more about DSP

With its extensive Research and Development programme Meridian has pioneered the development of a host of innovative audio technologies many of which feature in today’s Meridian products.

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As pioneers and leaders in the field of Digital Signal Processing (DSP) technology, Meridian is able to deliver your music authentically to recreate the passion and involvement of your musical moments. Power-efficient, active DSP crossovers are individually tailored to distribute music to each speaker, bringing your music to life.

Traditional audio systems often require large, expensive cables to maintain their performance. Meridian's SpeakerLink uses an “Ethernet style” cable that delivers pristine digital sound and control down a single cable between Meridian components. The result is simple, unobtrusive, and cost-effective cables that are easy to install

Each sample of a digital recording must remain evenly spaced in time. Unfortunately, timing can vary, especially when reading discs. This is “jitter”, degrading music's sense of space and diminishing realism. Meridian's multiple “First In, First Out” buffering system minimises jitter, ensuring perfect timing and improved clarity. You enjoy a clearer feeling of the instruments and their interrelationship.

Filters are critical in digital audio. Commonly they introduce distortion and harshness because of "pre-ringing". Early digital recordings suffer from harshness too, due to primitive filters. After painstaking research, Meridian developed a special filter that avoids pre-ringing, so it can be steeper, cleaning up the effects of early filters. The result: a better, cleaner sound from recordings old and new.

Loudspeakers use crossovers to “divide” music into bands their drivers can reproduce. This introduces distortion, reducing sound quality – particularly on human voice recordings. Designing a single driver for both mid and high frequencies made a crossover within the vocal range unnecessary, avoiding distortion and reproducing more lifelike vocals at all volume levels.

High or low, all sounds travel at the same speed, so all the sounds from a live musical event arrive at your ear at the same time, whatever frequencies they contain. Loudspeakers, however, have a problem when playing low frequency sounds at the same time as mid and high frequencies – the bass arrives late, and the deeper the sound, the later it arrives. This delayed bass causes music to lose its impact and reduces the sense of the recorded space – it is often described as “boomy”.

The goal is to have time-accurate loudspeakers, where all reproduced frequencies start and end at the same time. In a loudspeaker, this timing is affected by the crossover, driver, and enclosure 
type. To eliminate the delay between low, and mid and high frequencies, Meridian has designed a combination of digital filters and time delays for the mid and high frequencies. This solution enables the mid and high frequencies to “wait” for the low frequencies, delivering perfectly-timed music playback.

Mid and high frequencies are delayed to time-align them, while upper bass is delayed with a special type of patented filter. These features must 
be implemented entirely in the digital domain, making them impossible to achieve in any passive or analogue-active loudspeaker design.

Enhanced Bass Alignment provides accurate time-alignment of the drivers in the system, delivering exceptional imaging and a clear, transparent, more life like sound.

Watch our film about EBA

WE ARE THE
PIONEERS OF HI-RES AUDIO

Find out more about Hi-res Audio

Uses a complex digital filter to double the rate of samples from the source to improve resolution of the finer details in the record. This means that even with a standard source such as CD using our upsampling technology we are able to significantly enhance the listening experience.

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A patented Meridian audio format that combines high bandwidth, security and low jitter. MHR gets the highest possible sound quality in playback systems that use Meridian and enables the encoded transmission of PCM, MQA and DSD.

Meridian High Resolution Audio MHR.png

The Science of Emotion

Meridian’s incredible innovations can transport the listener to the emotions of a live performance. 

AUDIO INPUTS

Meridian SpeakerLink connector (RJ45)

AUDIO OUTPUTS

Meridian SpeakerLink connector (RJ45)

PERFORMANCE

Peak SPL: 1m - 117dB

AMPLIFIERS

1 x 100w Class AB amplifier for the wide-range drivers

1 x 150w Class D amplifier for the bass-driver

BASS DRIVERS

2 x 140mm

Wide-Range DRIVERS

2 x 85mm

 

FRONT PANEL CONTROLS

On/off rocker switch, Fuse holder, IR window

Rocker switch selects left-centre-right channel operation

LED indicator shows power status

DISPLAY

Eight-character display with system lights, can be blanked

POWER

IEC mains connector included in back-box connects to flying lead attached to enclosure

DIMENSIONS / WEIGHT

HEIGHT: 1230mm [48.5in] (Excludes frame and cable feed channel)

WIDTH: 203mm [8in]

DEPTH: 102mm [4in]

WEIGHT: 15 kg [33 lbs]

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