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.
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]
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: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！
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.....
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