No problem, we are working on it and hopefully it will be good to go in the coming weeks.
So here is the last update for a little while.
The PCB design is finished!
For the eagle eyed, there is a new addition to the PCB in the form of a "jumper"
The jumper allows the builder to swap between using an ECC83 and a 6N2P. These 6N2P are mega cheap and sound excellent so it seemed like a nice touch to add this.
The PCB will be black, and hopefully, there will be one here to build in the next few weeks.
The PCB design is finished!
For the eagle eyed, there is a new addition to the PCB in the form of a "jumper"
The jumper allows the builder to swap between using an ECC83 and a 6N2P. These 6N2P are mega cheap and sound excellent so it seemed like a nice touch to add this.
The PCB will be black, and hopefully, there will be one here to build in the next few weeks.
Yes, Alan thought so lol
We haven't actually heard it with a 6N2P valve so it's very much a theory based, but for the very little space it would take and possible benefits it could bring to keeping costs down, it seemed very sensible.
Again, Kudos to Craig, he has managed to make it very unobtrusive.
Looks great! I think I might be interested in one of these as well. I read through the thread, and sorry if I missed it, but do you have any info on gain figures? Also about loading and that sort of thing. Is that something that is adjustable?
Thanks!
Gain is around 60db I believe but I'll have to check.
Loading is done via loading plugs so it can be whatever you like!
I assume that's for MC configuration. Could you also check on MM gain specs? thanks!
I'm just scanning the PCB as well as I can as well, and I'm having trouble figuring out how it works as far as switching between MM or MC functionality. Is it a sort of thing where you set your gain based on component selection and that's it? Or is it switchable between MM and MC after it's built?
Also, what do you mean by loading plugs?
Yes,
41db for MM
Switching between MM & MC is done via a chassis mounted switch, which is wired to the PCB.
Loading plugs are basically a resistor soldered into an rca plug. This means you can make them up for any value.
Alternatively, if you dont plan on changing cartridge often, just solder the resistor directly to the pcb
You wire a SPST switch to the SW terminal center left side. This activates a relay to switch between a JFET cascoded MC input stage or an LED-biased voltage gain MM input stage. Additional gain ala JFET.
