After listening to my 12.1 for a while, I began to realize that there are some hum sound coming from my Tannoy Canterbury, a pair of sensitive speakers, when the muisc CD stopped playing. Some has said that it was due to the nature of the sensitive speakers. When used with the LS3/5a, the hum sound dissappeared.
Being a perfectionist, this "hum" sound has promted me to to try to "fix" the issues. I have tried sending these to the hifi repair shops at Ap Liu street Sifu but after adding an extra capacitor (quite an ugly site), and paying much $$$ the hum sound still exists.
Next, I have tried another Sifu to fix the hum sound, which resulted in changing of 3 resistors. The Sifu has managed to get rid of the hum sound which was quite a joyful thing. When I invited my friend JK to my house for audition, he has realised that even though the set was very quiet, the sound from the 12.1 has been modified and musch details has been surpressed. Upon checking, we realized that the 3 resistors replaced were not excatly according to the values set by the schematics. Thus, a third round of restoration process has started again. Lessons learnt the hard way.. My body must be getting fitter after carrying more than 30kg of hifi equipments up and down the apartments...
Finally, with all the 3 resistors being replaced with the correct values, the leak 12.1 is back to its original sound with much more warmness, soundstage and details.
From then on, I have bought the neccessary meters and tools for DIY. I was able to find 4 units of NOS 25uf TCC capacitors and this time, I have managed to change the capacitors myself.
Now the 12.1 is singing beautifully! I have recently found 3 more 0.25 uf TCC super metal packs capacitoirs and 7 more is on its way. I hope they could arrive soon as I would love to use the 1st May holiday to DIY both my set of 12.1...
The joy of listening to the music is nice and the DIY restoration process is also a nice way of relax and de-stress after a hard days work!
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