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In Reply to: Could you tell me how you measure the current the amp is drawing at different bias levels? posted by Mr Vinyl on September 29, 2004 at 05:52:07:
There are less expensive basic wattmeters available. They've become popular with consumers who are into energy conservation or simply knowing what their appliances consume. I've seen these in department stores and mail order catalogs, airline in-flight catalogs, etc. This is not the brand I have but here's a link for you: http://www.ahernstore.com/p4400.htmlMine is a unit call Watts Up? Pro. In addition to a basic wattmeter, it has cost per KW/Hr output, power factor, etc. It also has a PC interface with basic datalogging and charting capability. You can read more about it at the website link below.
Watts Up? Pro wattmeter / datalogger. This is what I used
Accuphase DP-65v -> PS Audio PCA-2 Pre -> AES/Cary SixPac tube amps -> Tannoy D500 spkrs
Follow Ups:
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The wattmeter 'in the chain' has zero effect on the sonics as best I can tell. It's not like the device is in the 'audio chain'. It's inline with the AC power cord.But to answer your question, for most of my listening evaluation the wattmeter was not inline. It was there only to measure power consumption at the different bias levels.
Accuphase DP-65v -> PS Audio PCA-2 Pre -> AES/Cary SixPac tube amps -> Tannoy D500 spkrs
NT
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