LavryGold AD122-96 MkIII

From LavryEngineering
Revision as of 22:25, 5 July 2012 by Brad Johnson (Talk | contribs)
Jump to: navigation, search


Product Description

The LavryGold AD122-96 MkIII is a high-end stereo AD converter intended primarily for Mixing and Mastering applications; with balanced professional level XLR inputs and an XLR/AES digital output. There is a BNC Word Clock input and output, as well as an XLR/AES sync input for external synchronization.

For more information on the LavryGold AD122-96 MkIII click here

For general information analog to digital converter.




1.) Line inputs

The AD122-96 MkIII has balanced XLR inputs. The balanced configuration is recommended for both balanced and unbalanced line level sources.

The XLR input is Pin 2 "+" and Pin 3 "-" for normal signal polarity when the Polarity setting in the Audio Control Screen is “+ POLARITY”. Thus, for the AD122-96 MkIII with balanced or unbalanced Pin 2 "+" connections, the signal polarity is "normal" or "non-inverted." Changing the Audio Control Screen setting to “- POLARITY” will result in inverted signal polarity for balanced and unbalanced Pin 2 "+" connections.

2.) Digital output

The digital output of the AD122-96 MkIII is a male XLR connector; which transmits AES stereo digital audio. The output can be used to feed most SPDIF inputs by using a simple wired XLR to RCA adapter or adapter cable. Use of an impedance matching transformer is not recommended as long as guidelines for coaxial SPDIF connection cable length are followed.

3.) Synchronization

The AD122-96 MkIII provides BNC connections for Word Clock input and Word Clock output. The XLR AES Sync input can accept AES sync, and the type of sync is selectable in the Main screen of the front panel LCD display. The front panel also has a "Lock" indicator that illuminates when the AD122-96 MkIII is synchronized to the external input (but never during internal clock operation). There are setting for the sample frequency; which must be set properly for internal or external operation. Both “BNC WIDE LOCK” and “XLR AES WIDE LOCK” settings are provided for non-standard frequencies between 40 and 50 kHz (such as vari-speed applications); but will not provide as much immunity from jitter as the sample frequency specific modes, which employ a sophisticated crystal-referenced internal clock signal to ensure performance is virtually the same when operating on internal or external clock. There are also "2X" settings to be used ONLY when feeding the AD122-96 MkIII a sync signal at one-half the digital audio output sample frequency in external clock operation. They appear as “BNC WC LOCK 88/44," “BNC WC LOCK 96/48,” “XLR AES LOCK 88/44,” and “XLR AES LOCK 96/48” in the Main Screen.

Operating tips


The previous model AD122-96 MkII can be upgraded to the MkIII version, and all MkII converters returned for service will be upgraded to the MkIII version as a matter of policy.

Please note that ALL models previous to the MkII cannot be repaired or upgraded due to lack of availability of parts used in these models (the parts were discontinued by the companies which manufactured them).


Personal tools