| audio bill |
07-16-2019 07:24 PM |
Quote:
Originally Posted by TOGA
(Post 973180)
Is the XLR pin assignment of Luxman in the same camp as Burmester and Accuphase ?
That will cause phase reversal when use with American Preamp.
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Luxman uses the same standard for XLR pin polarity as Accuphase and some others, which is the reverse polarity of most American manufacturers. So if you make a connection to another device with the opposite polarity it will result in inverted absolute phase. To determine the overall impact on a given system you'd have to determine the total number of such inverting connections in the signal path, and if it's an even number they will effectively cancel and result in correct absolute phase. If however there is only one such connection between devices or if the total number of such connections is an odd number then the result will be that the system's output will be of inverted absolute phase.
To facilitate connecting components of varying XLR polarity, Luxman provides polarity inversion switches on both their C-900u preamp and M-900u power amp (and I'd assume many other of their components, but since I own those I can confirm that they do.) There is a setting on the preamp which inverts all XLR connections (inputs and outputs) from their default to the more common polarity standard, and a switch on the power amp which allows you to select either normal or inverted polarity for its balanced XLR input. |
