Western Electric 12a and 13a « combo »

In the heart of Switzerland a 13Audio replica horn setup has been installed for what I can call a “very keen” listener “I” who is very happy playing mono even from stereo recordings, good man! I is also into his whiskey as I discovered when I opened the door behind the horns, does that help…

Is DC DC….and boxes that bring power

There is an underestimated evaluation of the impact that power supplies have on field coil speakers. Makers of field coil drivers tend to minimize this aspect and in general advising the use of switch power supplies or diode based regulated ones. Well with friends we have done some testing on the big systems that are…

EMT 927 & R80 "The Bearing and Platter" Size matters?

Was it the abundance of metal Germany that led William Franz KG  with “Electrical Measuring Technology” to design and build such an imposing machine? Maybe not! Or was he just seeking to mark history with an incredible achievement towards analog reproduction? The design was aimed and for  the high demands of broadcasting; one record, one…