I posted this in another thread but thought it might get lost a bit there. So I'm copying it to it's own thread!:
Hey Guys,
I just got off the phone with a Pioneer Tech. I was asking if he knew what kind DACs and OpAmps were in the new 74TXVi. The bad news is, he said he wouldn't know until the service manual came out (about a month or two from now).
BUT, the good news is, I had foresight to ask him about the amp section and the power supply. After reading a post from "Sounds Simple" (Bob) that the 74TXVi has "apparent improvements in the audio section of the amp" and reading it was much lighter than the 56TXi, I thought it was worth it to ask if the Tech. knew anything about it.
Guess what they do NOT use MOSFET amps in the 74TXVi. I asked him directly if they were digital amps, he said he did not think so. But they are a totally different design. He said he just had the oppurtunity to look inside one and verified they are definatley not the MOSFET design (I should have asked him to go look at the DACs and OpAmps too). From what he has been told, these new amps are much more effiecient in regards to heat. He explained briefly why this was so, but I can't remember the details. He said they are much smaller, and put off much less heat, and they do not require as big of a heatsink as a result. He mentioned something about thier design with regards to current and voltage that also meant that the amp requires less capacitance in the circuit, yet still can supply as much power (Maybe one of the reasons the Caps are smaller than the ones in the 56TXi). He said in his opinion they sounded just as good as the MOSFET design, and maybe a little better. I also asked him about the power supply, he said "oh yes, that is different too!" He said mostly in part to the different amp design.
Interesting stuff for sure! Hopefully in a good way! Maybe it is some type of hybrid digital amp, and he is just not up to speed on the technology yet! Now wouldn't that be cool!
One thing is for sure, with so many changes in this Elite model, it does make me even more curious if they also changed things around with the DACs and OpAmps.
uzun (one of the few owners of the 74TXVi), regarding your installer looking at the DACs and OpAmps, would a little begging help? How about ALLOT? I can swallow my pride for awhile!
Best Regards,
Patrick
Hey Guys,
I just got off the phone with a Pioneer Tech. I was asking if he knew what kind DACs and OpAmps were in the new 74TXVi. The bad news is, he said he wouldn't know until the service manual came out (about a month or two from now).
BUT, the good news is, I had foresight to ask him about the amp section and the power supply. After reading a post from "Sounds Simple" (Bob) that the 74TXVi has "apparent improvements in the audio section of the amp" and reading it was much lighter than the 56TXi, I thought it was worth it to ask if the Tech. knew anything about it.
Guess what they do NOT use MOSFET amps in the 74TXVi. I asked him directly if they were digital amps, he said he did not think so. But they are a totally different design. He said he just had the oppurtunity to look inside one and verified they are definatley not the MOSFET design (I should have asked him to go look at the DACs and OpAmps too). From what he has been told, these new amps are much more effiecient in regards to heat. He explained briefly why this was so, but I can't remember the details. He said they are much smaller, and put off much less heat, and they do not require as big of a heatsink as a result. He mentioned something about thier design with regards to current and voltage that also meant that the amp requires less capacitance in the circuit, yet still can supply as much power (Maybe one of the reasons the Caps are smaller than the ones in the 56TXi). He said in his opinion they sounded just as good as the MOSFET design, and maybe a little better. I also asked him about the power supply, he said "oh yes, that is different too!" He said mostly in part to the different amp design.
Interesting stuff for sure! Hopefully in a good way! Maybe it is some type of hybrid digital amp, and he is just not up to speed on the technology yet! Now wouldn't that be cool!
One thing is for sure, with so many changes in this Elite model, it does make me even more curious if they also changed things around with the DACs and OpAmps.
uzun (one of the few owners of the 74TXVi), regarding your installer looking at the DACs and OpAmps, would a little begging help? How about ALLOT? I can swallow my pride for awhile!
Best Regards,
Patrick