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Meridian G61 Surround Controller

The G61 builds on the technology that went into Meridian’s flagship, AAA-rated 861 surround processor, and is a development of the successful G68.

It is a powerful, flexible surround controller with an attractive price-tag, ideal for those who do not require the comprehensive video and multiroom features, tuner or Room Correction software provided in the G68.

At the heart of the G61 is a powerful DSP engine consisting of three Freescale 56367s and a 56371 running at 150MHz – delivering in excess of 500MIPS (million instructions per second).

Processing is performed at high sample rates and with 48-bit precision throughout, ensuring that all filtering, processing and other operations are carried out far, far above the limits of human hearing. The G61 is thus ideal for the very latest in digital audio, such as DVD-Audio and emerging standards. For superior audio quality, incoming analogue signals are converted to 24-bit, high-sample-rate digital data via multibit Delta-Sigma converters as soon as they enter the processor, and all digital signals are re-clocked to minimize jitter and maintain total data integrity.

The G61 includes two 6-channel S/PDIF digital inputs (coax), five stereo Toslink optical inputs, and six stereo coax digital inputs. In addition, there’s a 6-channel analogue input, and five stereo analogue ins. All the inputs are reconfigurable for an incredible degree of flexibility, and analogue inputs are converted to digital at high resolution – 24-bit, 96kHz.

Use G61 with Meridian's award-winning G98 DVD Player

The G61 combines controller and surround processor functions, meeting the latest THX Ultra 2 specifications and including the latest superb-quality AAC, MPEG, DTS, Dolby, Trifield and Ambisonic (both 2-channel UHJ and B-Format, to 4, 5, 6 or 7 speakers) decoding.

The decoders consist almost exclusively of our own code, giving them superior integration with the Meridian design philosophy, as well as superior performance.

The G61’s ‘Smart Source’ feature continually monitors the digital inputs and automatically loads the correct decoding software for the format, speaker layout and encoding of the incoming signal. This capability is enhanced by MHR SmartLink, which provides a digital link between a Meridian optical disc player and processor, carrying explicit information about the nature of the data stream as well as encrypted high-resolution digital signals from DVD-Audio – the first system of its kind to be approved. Virtually all other manufacturers oblige you to go through a D/A-A/D chain, losing quality in the process.

You can also store separate user parameters for each source (such as DVD) depending on whether the incoming signal is stereo or surround, so that any source material is played with the DSP mode of your choice.

The G61 features eight analogue outputs for front, rear, centre and sub connections, plus two additional outputs for other applications. Ten digital surround outputs are provided, including front, rear, side, centre/sub and again include an additional output pair.

The G61 can be configured with a powerful Windows graphical set-up application (downloadable from the Meridian web site), which allows access to all the unit’s functions and configuration. However, the G61 can also be configured extensively from the front panel, thanks to the comprehensive ‘soft-key’ based user interface which is common to all the G Series components. ‘Wizards’ lead you through the configuration procedure, allowing a powerful degree of customization without having to hook up a computer.

The G61’s firmware can be updated via serial link with files downloaded for the Meridian web site.

Contact your Meridian dealer for a demonstration of the G61 and other G Series components, along with Meridian DSP Loudspeakers, which form an ideal complement to them.

Technical Specification

Digital Input: (S/PDIF): 5 x TOSlink optical in, 6 coax stereo in, 2 x 6-ch MHR coax in.

Analogue Input: 5 x stereo, 1 x 6-ch analogue in, unbalanced

Outputs: Digital outputs (S/PDIF coax): Main L/R, Centre/Sub, sides, rears; A/B (configurable)
Analogue outputs (phono): Main L, Main R, Rear L, Rear R, Centre, Sub; LZ, RZ (configurable)

Analogue ins: 0.5–2.5Vrms adjustable, input impedance 20kΩ

Analogue outs: Variable between 0 and 3.5Vrms, output impedance 47Ω.

Distortion <0.01%.

Noise & hum <-95dB CCIR

Control: 2 x DIN and 1 x BNC Meridian Comms, 3 x Trigger (+12v, 150mA), IR in, USB, RS232 remote control/configuration

Processing: 3 x Freescale 56367s and a 56371 running at 150MHz to give a total of over 500MIPS (million instructions per second). 48-bit arithmetic throughout

Conversion: 24-bit Sigma-Delta converter chips operating at up to 96 kHz on analogue inputs and outputs

Use G61 with:

G98 Player

DSP Loudspeakers

User Manual

Data Sheet

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