Installation guide

I n t r o d u c t i o n
1
Introduction
This guide provides full information about unpacking the G68 Digital Surround Controller,
connecting it to the other equipment in the system, and configuring it using the front panel.
Once you have connected and configured the product, refer to the G Series System Guide for
information about operating it.
The G68 is a powerful, flexible surround controller, and represents
the centrepiece of the G Series range. It provides eight balanced
analogue outputs, eight digital outputs, component video
switching, and Meridian Room Correction.
At the heart of the G68 is a powerful DSP engine consisting of five
Motorola 56367s running at 150MHz – delivering an incredible
750MIPS (million instructions per second) capability. Processing
is performed at high sample rates and with 48-bit precision
throughout, ensuring that all filtering, processing, and other
operations are carried out beyond the limits of human hearing. The
G68 is thus a perfect processor for the very latest in digital audio.
Inputs
Analogue signals are converted via a 24-bit Delta-Sigma converter
to high-sample-rate digital on input to the processor, while all
digital signals are reclocked to minimise jitter and maintain total
data integrity. The G68 includes two six-channel S/PDIF digital
inputs (coax), a USB audio input, four stereo TOSlink optical inputs,
and six more stereo coax digital inputs. In addition, there is a six-
channel analogue input, and five stereo analogue inputs.
Formats supported
The G68 combines controller and surround processor functions,
meeting the latest THX specifications and including MPEG, DTS,
Dolby, Trifield, and Ambisonic decoding. In many cases the decoders
incorporate our own code, giving them superior integration with
the Meridian design philosophy, as well as superior performance.
As a result, the G68 can decode surround signals from all PCM
optical discs. The G68 is thus an ideal complement to a G Series
optical disc player like the G96.