Changed the diodes, no luck.
However, I discovered something ..
My headphone is Takstar 82's implementation á lá Cooler Master MH-751 gaming headset, closed back. Unlike the original Takstar Pro82, it has a pot and mic-mute on its cable.
Well, 'til now I was always listening like pot at max here and at low-ish levels on my tube amp.
Now I discovered: if I turn down volume to pretty much (like 80%) on the headphone cable, I not only have a healthy large play between min and max volumes but my amp is dead silent.
WOW 🙂
For that recognition I at least changed the whole diode bridge, made DC heating and all those struggles since 2 days omg.
Uh. It was worth because of learning, for sure, but otherwise I might already had a reasonably good amp - we'll never know. 🙂
Now finally I can enjoy such a quality, ahh. It's always so stunning for me to hear these microdetails, crisp clear highs and tiniest nuances in the upper region.
I was missing my little baby. 🙂
Cheers Guys and I really appreciate your instant help with the hum pot. This will definitely serve me well in the future for my next builds.
Have a great Summer, enjoy music 😉
(Needless to say, all tubes are behaving OK).
However, I discovered something ..
My headphone is Takstar 82's implementation á lá Cooler Master MH-751 gaming headset, closed back. Unlike the original Takstar Pro82, it has a pot and mic-mute on its cable.
Well, 'til now I was always listening like pot at max here and at low-ish levels on my tube amp.
Now I discovered: if I turn down volume to pretty much (like 80%) on the headphone cable, I not only have a healthy large play between min and max volumes but my amp is dead silent.
WOW 🙂
For that recognition I at least changed the whole diode bridge, made DC heating and all those struggles since 2 days omg.
Uh. It was worth because of learning, for sure, but otherwise I might already had a reasonably good amp - we'll never know. 🙂
Now finally I can enjoy such a quality, ahh. It's always so stunning for me to hear these microdetails, crisp clear highs and tiniest nuances in the upper region.
I was missing my little baby. 🙂
Cheers Guys and I really appreciate your instant help with the hum pot. This will definitely serve me well in the future for my next builds.
Have a great Summer, enjoy music 😉
(Needless to say, all tubes are behaving OK).
Thanks for the links. On my other to-be tube amp's power transformer when I tried .. DC was not enough from 6.3V AC tap. Luckily I was thinking ahead and not only overspecified the needed currents but also had a 9V tap - actually, a 9V secondary with 6.3V tap. Anyway, from that 9V there was absolutely no issue on DC, stabilized, I set it to 6V, that's it. Fire & forget. 🙂
Here, the 6.3V AC gives me fully loaded ~6.45V DC.
Perfect. But need to replace the FR607 diodes. They're hot like hell. I mean really hot.. I felt the heat while looking into the amp closer, on my face. I was like wtf, 6A diodes struggle with 3A ? But yeah, apparently. 15A Hexfreds will do the trick, same ultrafast types as in the anode section now. (The latter are not even warm, okay, eating 0.3A only but still).
Here, the 6.3V AC gives me fully loaded ~6.45V DC.
Perfect. But need to replace the FR607 diodes. They're hot like hell. I mean really hot.. I felt the heat while looking into the amp closer, on my face. I was like wtf, 6A diodes struggle with 3A ? But yeah, apparently. 15A Hexfreds will do the trick, same ultrafast types as in the anode section now. (The latter are not even warm, okay, eating 0.3A only but still).