Yes, just do it this Christmas Holiday but the transformer was bought about 10 years ago and I had done a 300B based on WE91 circuit, using a WE310A as the driver. So I assume the transformer had run it a little bit but of course the cap needs about 100-200 hours run it.
I am using XE-20S and I have use 2.5K for the output impedence. My experience in my last 300B is that it is not powerful so I am using two Black Gate 100u X2 which seemed it make up the short coming of my last amp.
Just change to Full Music 300b/n this month and found the sound improve a lot when compare to China 300B,
Yes, we can share together on how to improve this amp as I like it very much.....
[quote:2357b596fb="accphoto"]Sound very sweet, the circuit is based on Sun audio but modified for higher voltage on 300B. The plate voltage of 300B is at about 420V and running at 65-70ma current, I guess it is a maximum. Match very well with my TDA 300 speaker which needs only small power. I have MC275 and MC240 at home, I think it is better at least in my ear. [/quote]
是否新做的呢?如是還要煲!大家要多些交流呢!
屏壓最高可以450V電流約75mA,不過420V及70mA是最好的,
唔知各下的output牛是幾ohm呢?如是2.5K會比較大的功率輸出,
至於陰極電流越大,聲音會比較厚,也比較溫暖,所以感覺sweet。
但300B很難同MC275 and MC240 作比較!
Sun audio線路的電壓太低了,另外希望日後有幾會再用其它推動膽試作300B!
Sound very sweet, the circuit is based on Sun audio but modified for higher voltage on 300B. The plate voltage of 300B is at about 420V and running at 65-70ma current, I guess it is a maximum. Match very well with my TDA 300 speaker which needs only small power. I have MC275 and MC240 at home, I think it is better at least in my ear.
How much for this kit set? What is the sound effect? All components are Japanese products except the coupling capacitors, will the sound trend Japanese style. I like British style. [/quote]
How much for this kit set? What is the sound effect? All components are Japanese products except the coupling capacitors, will the sound trend Japanese style. I like British style.