Ha! I came to this video from seeing one of your others showing this preamp, specifically because I wanted to know where to find that chassis. Appreciate you dropping that warning that you have no source right away!
I really like your approach of laying out and planning properly, and thinking of where all the connections are going to go. I see so many home builders who just hack it as they go along, and have no care at all about their build quality. I'll be watching this one!
This is going to look good. I'm interested in the sub out. I haven't pulled the trigger on any of my projects yet as I'm in the middle of fixing my car first so looking forward to watching your project come to life. Your videos are great. Thanks
Hi Skunkie, I am trying to build this project just for fun. I'm a newbie, so I could use a little advice. I see that you are using an ALPS Blue Velvet potentiometer, but I have not see anywhere that you identified the resistance. Is it a 10K or a 100k or something in-between? Thanks a ton for making these videos.
I was wondering if you were going to upgrade components for possibly a better signal path? It looks to me that at least the coupling caps are ripe for an upgrade to Nichicon or Elna silk audio grade caps.
While it looks like the pv-5 schematic the use of a 12ax7 rather than the 5965/ 12ay7 is a poor choose for a cathode follower . It has very low current on the ax rather than a a7 or at even a au for that matter.
@@johnwilliamson467 Any reason I can't drop some 12AU7 in the final stage? I haven't done a lot of study but they do share the same pinouts. I plan on using 7025 tubes to start with.
@@SkunkieDesignsElectronics Change the cathode resistor for the increased current and you should be good to go . the circuit is one that was popular in the 80s by CJ sold a number of them . The board looks of good quality. an AT or AY (5965) is what CJ used . i will look up the values and let you know.
Ha! I came to this video from seeing one of your others showing this preamp, specifically because I wanted to know where to find that chassis. Appreciate you dropping that warning that you have no source right away!
I really like your approach of laying out and planning properly, and thinking of where all the connections are going to go. I see so many home builders who just hack it as they go along, and have no care at all about their build quality. I'll be watching this one!
Happy to have found this video!
This is going to look good. I'm interested in the sub out. I haven't pulled the trigger on any of my projects yet as I'm in the middle of fixing my car first so looking forward to watching your project come to life. Your videos are great. Thanks
Looking good. Well thought out.
From these same ebay sellers I see the CJ preamp, marantz7, and a few others. Are there vids comparing them and discussing the merits of each?
Hi Skunkie, I am trying to build this project just for fun. I'm a newbie, so I could use a little advice. I see that you are using an ALPS Blue Velvet potentiometer, but I have not see anywhere that you identified the resistance. Is it a 10K or a 100k or something in-between? Thanks a ton for making these videos.
Pretty sure it's 100K
I was wondering if you were going to upgrade components for possibly a better signal path?
It looks to me that at least the coupling caps are ripe for an upgrade to Nichicon or Elna silk audio grade caps.
I'm trying a "real" orange drop for the input cap and using Mundorf MKP for the rest.
While it looks like the pv-5 schematic the use of a 12ax7 rather than the 5965/ 12ay7 is a poor choose for a cathode follower . It has very low current on the ax rather than a a7 or at even a au for that matter.
We will see how all this plays out :)
@@SkunkieDesignsElectronics nice job there not your fault. Just more of a design point .
@@johnwilliamson467 Any reason I can't drop some 12AU7 in the final stage? I haven't done a lot of study but they do share the same pinouts. I plan on using 7025 tubes to start with.
@@SkunkieDesignsElectronics Change the cathode resistor for the increased current and you should be good to go . the circuit is one that was popular in the 80s by CJ sold a number of them . The board looks of good quality. an AT or AY (5965) is what CJ used . i will look up the values and let you know.
Try 2 80ks for the 2 47k cathode resistors with an AT about the same with some AU they should work ok. Yes they all are 9A pinouts .
Maybe I missed it but what about an input selector switch.
Not doing that initially but might add one later.
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