Coins and Tubes

Dear Dr. Jon Wong,

I hope you can share some tips with me regarding using coins and tubes. I'd like to narrow the number of possible placement to quickly enjoy the music.

My humble setup consist of a TT, a CDP, a tuner, an int-amp and a floorstander. They are placed back-to-back with a fabric sofa in the middle of the hall facing the kitchen where the partitioning wall has been knocked off the make the living and kitchen area into one long "room". The ratio is about a third space at the back and 2 third space in front. Almost free-air placement for the spkrs, i supposed.

No branded power distributor. Just normal extension from mains distributing power into 3 power point with a multi-plug in one of them shared by the tuner and CDP. Cables are DIY using CAT5 network cables braided (a method called TNT-tripleT) to bi-wire the spkrs.

Where can I use coins on these components? How do I secure the coins? Directly couple the coins to the surface by scotch tape? or blue tag them? Where should I place the coins onto the spkrs? On the top at dead center? Which corner? Is it over the the axis of the tweeter? How about at the back?

About using tubes as supertweeter, how do i secure them on the spkrs? blue tag them standing or lying down? At which part of the top of the spkr? I also heard of putting tubes on top of CDP and Amp, but where and how to secure them from falling off?

Finally, where can i get the tubes? Must it be dead or alive?

Many thanks to your kind reply. Have a nice day.

Hello Yong,

First, you need to prepare at least a few dozens of Singapore 5 cent coins. Buy a roll of thin double sided tape.You need to apply at least two layers of the thin double sided tapes to the coin. Cut and trip them nicely, then we are in business.

Stick one coin on the wall between the speakers. This will fix the imaging. If you want the sound stage higher, just stick it higher. You can also fix one coin on each side of the side walls. You have to experiment. They can extend the sound stage.

Stick one coin on each power plug. This will improve the power.

Stick on coin near the RCA or power terminal of your CD or AMP. You can experiment yourself.

As for the tube, just let them stand on the legs. Do not let them lay on their sides. You need those 9 pin miniature types. Dead or alive, they are both good. You can get them from us, or ask Well audio lab if they have any to spare you.

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