Hi Bigman. i was looking at pictures of that amplifier you already had and it had an "ATL" circuit board before the transformer. Is it necessary. where can i get one.
No, not necessary
It's a DC Blocker and I was having what I thought were problems with DC on the mains, at the time, but have long since dealt with it as it was a noisy transformer at fault
As long as your Transformer doesnt mechanically buzz, you are fine
Thank you. I ordered my own transformer from Toroidy. From Poland. I have an amplifier made by them. Mira Zeti with 300B tubes. I think the incredibly good sound of that amplifier is due in large part to their experience as a transformer manufacturer. I am confident.
In that boom list, some parts are marked in yellow / brown. whether it is an indication that these parts are in the signal path.how should i deal with these parts? or what is the purpose of that color enhancement. those capacitors marked in green are yet to be ordered. again certainly a stupid question, but does the value of the voltage of those capacitors matter. as long as they are above that given value. eg given value 250v Can I use those with a value of 600v. There is one good side to these questions of mine. usually i don't ask the same thing as once 🙂
The beige filled columns are to indicate that you need a minimum of 1% tolerance in those positions. They will be EQ related. Personally i match every component for best results.
Higher voltages are absolutely fine
You asked what I used to clean the pcb.
I answered.
I answered.
But I lied. I'm using isopropyl alcohol. (had not looked at the bottle recently)
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In other news. Transformer enclosure pimped, locked and loaded!
Bigbottle phonostage done, fixed to the enclosure and all wired up. Now I just need to find the cover somewhere in my house.
Bigbottle phonostage done, fixed to the enclosure and all wired up. Now I just need to find the cover somewhere in my house.
Attachments
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If I print that on my printer will it come out as natural (or actuel size maybe I should say) size then?
Tube sockets. Belton P-ST9-700-PC. That recommended socket has a 9 pin. + one that is apparently grounding that socket. that circuit board also takes into account that grounding. whether that grounding is important. i would like to use that recommended socket but i can't find them here in europe.
I couldn't find them in the UK either.
Maybe one of our US brethren could post some over?
Yep, the layout is on US Letter format, but just ensure you have 100% scaling on whatever size paper and you should be good to go. Always double check an X and Y dimension after printing to be sure!
Greg
Hi again. Is it possible for this project to make adjustments for gain and MC load. Has anyone done this. How could it be done.
MC load is done by adding resistors as needed to the loading plugs.
1k ohms for MC with no plugs by the way.
1k ohms for MC with no plugs by the way.
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