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HD621 HDMI Audio Processor

 User Guide

You can configure the HD621 using the Meridian Configuration 
Program, a Windows application that is used to set up Meridian 
components and systems. For details on how to use it, see its 
built-in help files. You can also download its User Guide from 
the Support section of the Meridian Web Site at:

http://www.meridian-audio.com/

The Meridian Configuration Program is installed by the Common 
Installer which can also be downloaded from the Support 
section of the web site. 

Connections 

Connect your computer to the HD621 via RS232 and run the 
Meridian Configuration Program. 

The HD621 is set up in the same way as any other Meridian 
component.

Note: the HD621 can act as a Controller. However you will 
only use it as such in a non-Meridian system. If you select the 
HD621 as the controller in a Meridian system, the available 
inputs on a Meridian processor you add subsequently will be 
limited to those defined for the HD621. 

To configure the capabilities of the HD621, display the 

Properties

 dialog for the product. 

Audio

The 

Audio

 tab is used to define the audio behaviour of the 

HD621:

The properties are described in the following table:

Property

Description

Audio Output

Selects the output port used to interface 
with the system, using the pop-up menu 
in the 

Value

 column. This will either 

be 

SmartLink/MMHR

 (normally, to 

use the phono or RJ45 outputs) or, 
exceptionally, 

Video HDMI

, which 

retains the audio on the HDMI output 
along with the video.

MHR Connection

Select 

SmartLink

 to feed a Meridian 

Surround Controller such as the G61R, 
G68 or 861. Select 

None

 to feed 

Meridian DSP Loudspeakers directly.

Configuring the HD621 

Summary of Contents for HD621

Page 1: ...HD621 HDMI Audio Processor User Guide...

Page 2: ...ety warnings Do not expose the unit to dripping or splashing Do not place any object filled with liquid such as a vase on the unit Do not place naked flame sources such as lighted candles on the unit...

Page 3: ...rol connections Use this connection To connect to this RS232 DB 9M Sub connector A PC to enable the HD621 to be controlled remotely via serial commands configured using the Meridian Configuration Prog...

Page 4: ...ith resolution enhancement of up to 24 bit When set to standard rates the output is either 44 1kHz or 48kHz irrespective of the input rate high sample rates being downsampled by a factor of two or fou...

Page 5: ...al input on your Meridian Surround Controller or DSP Loudspeakers Be sure to observe the channel allocation correctly Each socket carries two channels and you should connect the appropriate number of...

Page 6: ...s switched off or disconnected This allows music to play or continue to play without a display It may take a few seconds while the units handshake to establish this mode It may also take a few seconds...

Page 7: ...u will only use it as such in a non Meridian system If you select the HD621 as the controller in a Meridian system the available inputs on a Meridian processor you add subsequently will be limited to...

Page 8: ...ital 5 1 Ch AAC DTS 5 1 Ch Inform the source about the decoding capability of the products fed by the HD621 Set all three to Yes for Meridian Surround Controllers such as the G61R and G68 Set AAC to N...

Page 9: ...ypes stored in the product You can reset the HD621 to a Type by selecting the desired Type from the list and right clicking on it then choosing Reset to this Type from the resulting pop up menu The fi...

Page 10: ...e expected result eg no audio is heard even after several seconds have elapsed it may help to switch to another input and then back again This is not a fault in the HD621 it is a function of how the s...

Page 11: ...HD621 HDMI Audio Processor User Guide 11...

Page 12: ...HD621 HDMI Audio Processor User Guide 12...

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