Lodge Grands Charmoz is the nearest lodge to the Shirakaba Kokusai skiing area

LET’S GET CONFORT AND ENJOY GREAT AUDIO WITH YOUR FAMILY.
You might imagine a special sound system room when only hearing of a word, “audio” such as an amplifier and a huge speaker with millions of power consumptions, and a chair for a preeminent listener. Generally people get into a trouble to be familiar with audio because of this kind of image. ok this story could connect to a discussion so-called “Mania” so it had better not to speak further than this. Of course, there is a feeling of envy toward the professional area...
However, real music is in our daily lives, so the audio equipments belonging to it also should be in the daily life. Here is a suggestion of listening to music in your family house with your family members. It may cause a good conversation and relationship in your daily routines. For example, kids finishing their home-works talk to their mom washing dishes at a kitchen, “ Wow! Listen! It’s cool here the sound in flat 5.” It is also nice to have good music closer and in relax.

THE VACUUME TUBE IS A CULTURE
According to Henri Bergson, civilization is for pursuing ease and convenience and culture is emotion and/or affect. When vacuum tube was appeared 100 years ago, it was about the civilization. The technology has been advanced, such as the invention of the semiconductor and the digital technology with development of the civilization. In fact, today’s audio equipments are rarely broken down, have low producing cost (= large profit margin), spend low electronic power consumption, and have no distortion in the shape. It seems so perfect. However, please wait a minute and think... There was a moment that the vacuum tube turned into a culture when it was admired as an useful audio equipment. Civilization is logical. Culture is emotional. Although these are continuous, in transferring process from logic to emotion, the material object or the concept should be clear and beautiful.

Each model of the vacuum tube has each different story, such as for an industrial use, a household use, a military use, HiFi use and so on. We can expand our imaginations over the histories of inevitability of the invention and a desire/passion of the engineers who invented the operation circuit systems. Fortunately, I got an opportunity to fix an electronic phonograph that was made around 80 years ago. It was wonderfully recovered by a little touch of repairing. How do you think if your High technological PC would be functional after 80 years?
It is not exaggeratedly said that a huge amateur engineers’ passion has supported the vacuum tube to be kept in the form today even if it had once been disappeared from the industrial world.

INTRODUCTION OF AMPLIFIERS FROM MY COLLECTION
It is possible to have auditions at lodge Grands Charmoz. Please feel free to come.

EL156 (china)-KT88 CONVERTIBLE AMPLIFIER:
This vacuum tube, EL156 was designed for the output of record cutting machine of German Neumann, which was marvelously powerful tube with 50W of the plate loss. When I got this ball (though it was not Terefnken’s original made, but China-made), I was really looking forward listenning to the sound, and searching a transformer fittiing for it. However the machine for driving it was a little bit expensive, so I was concerning. At that moment, I accidentally found an amplifier KT88 on a shelf in my garage, which I made 30 years ago. I looked at the transformer, and realized Lax was used. In those days, the transformer was about 2,000 yen, and it would be ok. A spare of a single amplifier 2A3 produced by a request of Mr.O living in Kanagawa was used for the chassis. I could not wait for putting them up with drawing up the plans, so I completed them with only a character table of the vacuum tube.
Because KT88 was still remained getter at that time as well as it was a ball of GEC, I decided to make it as use of a convertible amplifier by making a switch circuit of a cathode resistance. There was no faulty wiring, and the sound come out with ITAKE. Although it was made for me without any big consideration, it became a satisfied one even if connecting to the 94dB speaker without any trouble of residual noises. It was so nice to listen the sound of piano and high hat cymbals with it.

PREAMP EQUIPED WITH LM1036 (SEMICONDUCTOR COMPANY):
This is a pre-amplifier used the electronic volume chip named LM1036 made by semiconductor company. Recently, it is difficult to get a good quality dual volume that made me feel bad. At that time, I found this chip, and challenged making one out of it.
The case is original coating with burning paints ,spcc1.6mm. This order-made amplifier was made for Mr. T (living in Tateshina), on which an equalizer amplifier was built for being able to listen to record disk as well as installed the terminal RECOUT PLAYBACK. Also, another one with a tone control circuit has been used by Mr.F (living in Ome).

6L6-GC WOOD BASE AMPLIFIER:
This amplifier was made by the suggestion of a professional jazz bassist, Tetsuo Miura. Because I got Hammond’s output transformer, it naturally became 6L6pp. It is connected to the end step with division P-K and the first grade 6SL7 (tone control) phase reversing 6SN7. It might be interesting to replace to EL34.
However, unfortunately I don't have a wood base for the sound examination, so am waiting for a visit of Mr. Miura. Lately, for the refinement, it has regenerated to the phase reversing of the Murard type because of a problem of falling gain in the P-K division. Furthermore, it has been improved by deepening NFB to earn DF.

Before the phase was crrected (left) & After the phase was corrected (right)