I tried to repair TRIO amplifier but I realize I can not handle it. I turned up the volume of my junk speaker. I could hear the sound but it would be broken if I turned up the volume more. I went to Hi-Fi Do and asked the staff what I should do with it. He said , "You should give up repairing it. I decided to suspend it for a while and I looked over the shop.
I found a tweeter of TECHNICS EAS-5HH17 in the shop. I checked the sound and I decided to buy it. I turned on the switch after connecting it to full-range speaker of TECHNICS(20cm) and mounted oil condenser of Bita Q (1.0 micro). I compared the sound of TECHNICS and EAS-5HH10. The sound of TECHNICS is more mild and soft, and it sounds better gradually. If my memory is correct, the succeeding model of EAS-5HH17 must be EAS-5HH10. I was satisfied to get nice tweeter though my amplifier is not fixed perfectly. I will show TRIO amplifier if I can repair it.