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Meridian DSP 640 In Wall Speaker (Single)


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Condition: Brand new in original retail packaging

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Warranty length 3 Years (5 Years on registration)
Brand Meridian

Tech Specs

In/Out: SpeakerLink (RJ45)
Peak SPL: 1m - 117dB


Wide Range: 2x 85mm (100W Class AB)
Bass: 2x 140mm (150W Class D)


IEC mains connector
Back-box connect to flying lead


Dimensions (HWD): 1230 x 203 x 102mm
Grille Size (HWD): 1251 x 223 x 4mm
Weight: 15kg [33 lbs]

Product Description

Meridian DSP640 In-Wall loudspeaker delivers high-quality music discretely in any living room or home cinema, providing incredibly lifelike and spacious sound.

DSP640 incorporates latest technologies from Meridian’s floorstanders including EBA and Centre Elevation technology raising perceived image location.

Stereo or Surround

A perfect choice for stereo or full surround, the powerful full range in-wall DSP640’s ultra-narrow box design makes virtually no visual impact to decor. Packing an entire super-efficient digital audio system, the fireproof back-box with frame system enables easy installation and requires only 100mm mounting depth.

Wide Range Drivers

There are built in power amplifiers for each driver. A 100W Class AB amplifier powers each wide-range driver, while a 150W Class D amplifier powers the bass drivers. The wide range drive units broadly disperse sound and create effortless imaging coupled with minimal unwanted diffraction for extraordinarily lifelike sound. Outstanding performance is delivered with a maximum output level of 117dB at 1m.

Digital Signal Processing

Adopted over 25 years ago, Meridian’s DSP technology achieves extremely accurate audio signal reproduction. One of the most exciting capabilities of DSP is the level of control and adaptability it offers. Power-efficient, active DSP crossovers are individually tailored to distribute music to each speaker, bringing your music to life.

Master Quality Authenticated

A revolutionary end-to-end technology delivers master quality audio in a file that’s small enough to stream or download. Backwards compatible, it will play on any device and because it’s fully authenticated, you can be sure you’re hearing exactly what the artist approved in the studio.

Enhanced Bass Alignment

EBA enables accurate time-alignment of the high, mid and bass frequencies reproduced ensuring that all of the sounds reach your ear at the same time, providing exceptional imaging and a clear, transparent, life-like sound.

Meridian High Resolution

MHR allows the secure movement of high resolution digital audio within a Meridian system, without degradation or loss in quality. Even with high-quality conventional analogue circuitry, unwanted noise and degradation to sound quality are inevitable. By digitally processing audio signals instead, they are able to retain absolute precision, resulting in a sound that is natural, three-dimensional and remarkably easy to listen to.

Meridian Apodising Filter

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.


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

Fifo Buffering

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.

Key Features

- Outstanding performance with max output level of 117dB, perfect for theatre applications.
- Wide range drivers for effortless dispersion and imaging 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.

Please Note

Speaker housing is not included but is available separately. Please call us to discuss.

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