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In the Forum: Didital Things
In the Thread: The Lavry Gold DA924 ++
Post Subject: Calibration & other thingsPosted by peter foster on: 4/1/2008
Dear Romy, my understanding is that Lavry will update their customers' original (db Technologies) DA924 to the equivalent specifications as the new ones leaving the factory today and that includes (for a fee) replacing the power supply to use a torroid transformer (as mentioned above) and replacing the face plate to one that says Lavry Engineering. It is easy to check by simply removing the screws on the top plate (now vertical plate for your set-up). Also, it is my understanding that when the power is switched on, the DA924 uses an internal oven to bring internal components to a stable operating temperature and then commences a calibration to optimize dac performance for that operating temperature. After a long period of time in operation, say one week, the operating temperature of the relevant internal components may have changed just enough that it is worthwhile (as recommended by their engineers) to power off then on so that the calibration is repeated but at that new stable operating temperature. I have followed their advice and do not hear a difference but will keep following their advice. I do not know what they measure when they service the machines but once I had my ADC there for some maintenance and their engineer said he was not happy with the measurements and so he performed some work to get the measurements of the ADC to their factory specification. To my ears, the ADC was just as good before their service as after their service. I think it is also important to note that in a recording studio the dacs would be used for less time than in our situation. With kind regards, Peter Foster.Rerurn to Romy the Cat's Site