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Meridian DSP640.2 In-Wall Active Loudspeaker


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Meridian DSP640.2 In-Wall Active Loudspeaker
Meridian DSP640.2 in-wall loudspeaker is the update to the DSP640 with new and improved amplifiers, updated DSP, Left + Right mode, front panel update functionality and compatible with existing RF600 back-box. DSP640.2 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 Ultra-narrow box design ensures that there is virtually no visual impact to the decor.

Enhanced Bass Alignment
Loudspeakers have a problem 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”. In a loudspeaker, this timing is affected by the crossover, driver and enclosure type. To eliminate the delay between low, 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.

Technologies
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. The traditional setup – amplifiers driving passive loudspeakers – is inefficient, limiting sound quality. Meridian loudspeakers contain a complete, matched audio system with efficient DSP crossovers, multiple DACs, and driver-specific amplifiers, giving higher overall quality, less power use, and the performance of a traditional loudspeaker eight times the physical volume.

SpeakerLink
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.

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 old and new.

Wide Range Driver
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.

Please Note: Speaker housing is not included but is available separately.

Technical Specifications:-

Drivers:
- Wide Range: 2x 85mm
- Bass: 2x 140mm

Power:
- IEC mains connector
- Back-box connect to flying lead

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

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