I walked around one street behind central street as it was fine day.
When I saw the carton box in front of "Akibaoo" No. 1 shop, I found that the speaker was sold at 100 yen per unit. I chose two units among ten units and bought them. The cashier said, " These speaker units are not refundable. I asked ,"In case that they don't generate any sound?" He said , " Please note that they are not refundable because JPY100 is bargain price including consumption tax. "
I confirmed that they were brand new items as I checked them up. I thought they might be produced more than 10 years ago. The shape is similar to speakers of Isophone or Siemens which I watched in Hi-Fi Do before. There are no manufacturer's name and they are printed only "Japan".
I wondered that they could sound . I visited the audio shop which my friend is working and showed the speaker to the staff. He connected them to amplifier and both of them sounded. Speaker units themselves seemed to generate slightly insufficient low-range. I thought that I would try them with speaker box or baffle board. My friend suspected that the price was JPY100. I showed them the receipt and he went out to get it immediately.
I will make a report on the experiment of result of these speakers next week.