MERIDIAN G68

G68 Surround Controller

G68 is a highly specified and flexible Surround Controller, featuring many of Meridian’s key technologies plus a comprehensive host of input and output switching and connectivity.

Central to the G68 is a powerful DSP engine made up of five Motorola 56367 devices and one 53671, running at 150MHz and delivering 900 MIPS (million instructions per second). All processing is carried out at high sample rates and with up to 48-bit precision, far beyond human hearing. This DSP engine is also responsible for G68’s comprehensive bass management system which can support up to three separate subwoofers, and for managing the up to 60 filters created by Meridian’s Room Correction software.

G68 includes multiple analogue and digital audio inputs including: Meridian SmartLink for multichannel connection to one of Meridian’s advanced DVD players such as G96, or for connection to a Meridian HD621; USB audio input for direct connection to personal computers or computer-based media servers; Toslink optical digital inputs for connection to set-top boxes, etc; and configurable multichannel analogue inputs for connection to multi-channel music sources. All analogue inputs are processed at 24-bit, 96 kHz resolution.

G68 also provides video inputs and switching for up to three component video sources.

HDMI audio sources can be connected to G68 via Meridian’s HD621 HDMI Audio Processor and Meridian’s digital multichannel SmartLink.

Providing up to eight channels of output for Meridian’s DSP Loudspeakers via SpeakerLink, G68 can control any of Meridian’s most sophisticated multichannel systems. For customers with traditional power amplifiers and passive loudspeakers, G68 offers balanced analogue outputs for up to eight-channels on XLR connectors. The AM/FM RDS radio tuner features 24-bit, 96 kHz analogue to digital conversion, with digital signal processing providing an elegant FM stereo blend/width control which filters unwanted noise out of radio reception. The tuner also features DSP-based low pass filters for improved AM reception.

Meridian G68 is offered in G Series anodised Silver or Black finishes.

DATA SHEET

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Outline Specifications

Inputs
• 12x S/PDIF digital (coax), D1–D6 can be configured as x2 six-channel digital inputs with Meridian SmartLink
• 4x Toslink digital optical
• USB digital Input
• 8x analogue stereo inputs, (phono). A1–A3 can be configured as x1 six-channel analogue input. 0.5–2.5Vrms adjustable, input impedance 20kΩ

Outputs
• 8x SpeakerLink digital (RJ45): L, R, C, Sub, Side L, Side R, Rear L, Rear R
• 8x analogue balanced (XLR): Main L, Main R, Side L, Side R, Rear L, Rear R, Centre, Sub
• 2x analogue unbalanced, (phono). Lz, Rz. Variable between 0 and 3.5Vrms, output impedance 47Ω. Distortion <0.01%. Noise & hum <-95dB CCIR

Tuner
• AM (Long/Medium Wave, 150–285/525–1605 kHz); FM (VHF Band II, 87.5–108 MHz), sensitivity 2.0μV
• Configurable channel spacing & emphasis for US/EUR/Japan, etc.
• DSP-based FM stereo width/blend reduces noise on weak signals
• AM whistle filter, LPF

Zone2/3
• 2x analogue audio out
• 2x digital out
• 1x BNC Meridian Comms

Video
• Inputs: 3x Component (phono)
• Outputs: 1x Component (phono)

Comms
• 2x Meridian Comms (DIN) + 1x BNC, 3x Trigger, IR in, USB, RS232 remote control/configuration

Processing
• 5x Motorola 56367s and 1 x 56371 running at 150MHz to give a total of 900MIPS (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

Controls
• Front-panel soft keys include control of Source, Copy, Mute, etc. Power and Display buttons, rotary DSP volume control
• Full remote control via MSR+, serial.
Serial link or maintenance USB port used for firmware updates
• Config via serial or front panel
• 3 x 12V trigger(s)

Display
• Multi-character dot-matrix Vacuum Fluorescent Display

Indicators
• Front-panel keys back-illuminated; Standby button lit when off

Formats
• Include Dolby Digital, DTS, MPEG Surround and AAC

DSP Modes
• Include Direct, Music, Trifield, Ambisonics (2-ch UHJ & B-Format; 4, 5, 6, & 7 speaker decode), Super Stereo, Music Logic, THX, Mono, Discrete, TV Logic, Digital, Digital THX, DTS, DTS THX, DTS Music, MPEG, MPEG THX, MPEG Music, ProLogic IIx Music, ProLogic IIx Movie, ProLogic IIx THX, Cinema, THX Ultra 2, THX Surround EX, Meridian Room Correction, and more

Power
• Universal supply 100–240VAC, 50–60Hz, 25W

Construction
• Meridian black or silver finish in metal & glass

Dimensions
• Width: 440mm (17.32in); Depth: 350mm (13.78in) plus connectors; Height: 132mm (5.2in)

Rack Mounting
• Kit available from Meridian authorized retailers

Weight
• 10kg (22lbs)