Hi Everyone,
I've been doing some research before assaulting the pair of Yamaha P2100s I own, and perhaps creating new differential input stage as well as making room for better AC coupling than original. I just spent $150 on balanced input cables and I intend to use them! 😀
I'm curious as to whether anyone has done an in -depth analysis of the input stages.
There are a pair of cascoded amplifier stages, which then connect to the drivers in a single ended fashion. Further, to do this Yamaha added 2 new secondary windings to provide an extra (-) rail.
This idea seems to have been taken forward to the P2200, some home amps as well.
Closest things I could find are mentions by Nelson Pass and a very interesting set of analysis done regarding "circuit memory" and amplifier linearity.
Thanks!
Erik
I've been doing some research before assaulting the pair of Yamaha P2100s I own, and perhaps creating new differential input stage as well as making room for better AC coupling than original. I just spent $150 on balanced input cables and I intend to use them! 😀
I'm curious as to whether anyone has done an in -depth analysis of the input stages.
There are a pair of cascoded amplifier stages, which then connect to the drivers in a single ended fashion. Further, to do this Yamaha added 2 new secondary windings to provide an extra (-) rail.
This idea seems to have been taken forward to the P2200, some home amps as well.
Closest things I could find are mentions by Nelson Pass and a very interesting set of analysis done regarding "circuit memory" and amplifier linearity.
Thanks!
Erik