Another factor in the capacitance issue is the nature of the input stage of your phono section. Vacuum tubes and transistors have a characteristic input capacitance that is added to the capacitance seen by the cartridge. For example one of the most commonly used tubes in a moving magnet phono stage is the 12 AX7. The 12 AX7 has particularly high input capacitance, which is otherwise known as Miller capacitance. This is for the very reason that the 12 AX7 has a very high mu, which is a correlate of gain. Obviously you need gain at the input, and the 12 AX7 was a common choice throughout the history of tube phono stages intended for use with moving magnet cartridges. The 12 AX7 used in a common topology typically will add about 50 pF or more to the capacitance seen by the cartridge. At least that’s how I remember it based on the last time I had to calculate it.
Life After Technics SL1200 Mk5
Hi All,
i am starting the hunt for a new turntable and what to hear from past owners of Technics TT's.
My first real turntable was a Luxman PD272 with a Shure V15 Type IV cartridge, both of which I wore out. Given it was my formative years, I loved that set-up. I acquired my Technics 1200 Mk5 about ten years ago after a long journey down the digital fork in the road.
Due to some technical furniture issues and WAF, I had to set the TT aside, again. I have rolled through various digital gear and currently use a PS Audio PWT and Theta ProBasic III R2R ladder DAC.
Anyway...I set up the Technics again with an AT150 MLX cartridge and....lo and behold...the digital setup, while not possessing that vinyl sound, does sound better than the SL1200 and AT150.
I did not want to believe this, so I reinstalled the cartridge and realigned the table. Same resort. Basically, the sound is a bit tilted to the treble, the bass is a bit thin compared to my digital gear, and the overall sound seems lean.I have fiddled with cartridge tracking and tonearm balance with no improvement.
So what is next? Is it I do not like the AT cartridge? Has my digital gear outgrown my TT?
That is why I want to learn about the experiences of those of you that moved to a different turntable from Technics. What Technics table did you have and what cartridge? What new turntable and cartridge replaced your Technics setup? How did the sound improve? I would appreciate any and all advice!
Thanks for listening,
Dsper
i am starting the hunt for a new turntable and what to hear from past owners of Technics TT's.
My first real turntable was a Luxman PD272 with a Shure V15 Type IV cartridge, both of which I wore out. Given it was my formative years, I loved that set-up. I acquired my Technics 1200 Mk5 about ten years ago after a long journey down the digital fork in the road.
Due to some technical furniture issues and WAF, I had to set the TT aside, again. I have rolled through various digital gear and currently use a PS Audio PWT and Theta ProBasic III R2R ladder DAC.
Anyway...I set up the Technics again with an AT150 MLX cartridge and....lo and behold...the digital setup, while not possessing that vinyl sound, does sound better than the SL1200 and AT150.
I did not want to believe this, so I reinstalled the cartridge and realigned the table. Same resort. Basically, the sound is a bit tilted to the treble, the bass is a bit thin compared to my digital gear, and the overall sound seems lean.I have fiddled with cartridge tracking and tonearm balance with no improvement.
So what is next? Is it I do not like the AT cartridge? Has my digital gear outgrown my TT?
That is why I want to learn about the experiences of those of you that moved to a different turntable from Technics. What Technics table did you have and what cartridge? What new turntable and cartridge replaced your Technics setup? How did the sound improve? I would appreciate any and all advice!
Thanks for listening,
Dsper