The SPU-T1 released by Ortofon at the same time as the Meister had a gain of 26dB. The T-7000 also has a gain of 25dB, so it seems to be just right.
The 618B has a gain of 29dB, and the KS-9450 has a slightly lower gain of 20dB.
I am currently conducting a comparative audition of Langevin 408A (gain 31dB) and KS9450, which seem to be the most compatible in terms of electrical characteristics among the transformers I have.
The Peerless4722 has the same characteristics as the Langevin 408A, but the sound quality is dry and too bright, so it doesn't seem to be compatible with SPU.
I haved all Kanno transformers and can told you
USW-31L have 1x36 gain perfect for FR-7f,
USS-30 have 1x30 gain perfect for old SPU,
USS-330 have 1x20 gain it perfect for Koetsu,SPU Meister
Recently, music files are often distributed on YouTube, etc., but even if you listen to them on a PC, you cannot judge whether the sound quality is good or bad.
Regarding the sound quality of this transformer, the exhibitor cannot feel the delicate feeling of the high range, rich overtones, and fresh resolution like the Ortofon T-7000, which is also exhibited at the same time. It is described as a traditional sound that is faithful to the orthodox basics.
You are a dear audio friend and it is not your fault and I do not have any bad feelings towards you, but at the moment in my country your country is viewed very harshly. and it is unlikely that your request will be answered. I'm sorry.
"InJapan" is intermediary company to buy from Yahoo ,but they told me the Japan banned many items to export from Japan, I can send this tubes to you if you can ship them tj me from Japan by yourself
Normally, it would not be a munitions item, so we might be able to arrange an agency, but in the current situation, it may be a little difficult to send electrical parts to you.
This is the first time I see this site called In Japan.ru, is it a Russian site?
It seems that it is a scheme that can be delivered to Russia, but I do not know the details. I'm sorry.
The only thing in your transformers collection and mine is the T-30 and No.6600.
It seems that Kanno's transformer is still being used with great care.
The 618B seems to have 30ohm/600ohm primary and 25kohm secondary, so it's not the same transformer. Does that mean that the transformers are made with the same permalloy core and have the same dimensions?
Is this the wiring when using with SPU?
I have posted a numerical table that calculates the characteristics of our transformer on the 2023 blog.
for 1x15 gain check 4 and 6
for 1x30 gain
You need reverse 7 and 8 , and check 6 and 5
I think KS9450 is 1x15 or 1x10 I'm unsure I dont have it for checks
It was also a wrong gain 1×10.
After all, the KS9450 is too low with a gain of 10dB.
reverse signal and ground on the output side
http://20cheaddatebase.web.fc2.com/needie/NDOrtofon/SPU-T100.html
http://20cheaddatebase.web.fc2.com/needie/NDOrtofon/SPU-T1.html
26dB = 1x20 gain
What is a reverse secondary coil?
I'm sorry. I misunderstood the concept of gain.
The gain of SPU T-1 was 21dB.
Kanno USS-30 has a unique material Corian in construction
Peerless 4722 have 1x36 and 1x18 gain but you need reverse secondary coil ,as you did with Langevin 408A
26dB = 1x20 gain
The SPU-T1 released by Ortofon at the same time as the Meister had a gain of 26dB. The T-7000 also has a gain of 25dB, so it seems to be just right.
The 618B has a gain of 29dB, and the KS-9450 has a slightly lower gain of 20dB.
I am currently conducting a comparative audition of Langevin 408A (gain 31dB) and KS9450, which seem to be the most compatible in terms of electrical characteristics among the transformers I have.
The Peerless4722 has the same characteristics as the Langevin 408A, but the sound quality is dry and too bright, so it doesn't seem to be compatible with SPU.
I haved all Kanno transformers and can told you
USW-31L have 1x36 gain perfect for FR-7f,
USS-30 have 1x30 gain perfect for old SPU,
USS-330 have 1x20 gain it perfect for Koetsu,SPU Meister
Recently, music files are often distributed on YouTube, etc., but even if you listen to them on a PC, you cannot judge whether the sound quality is good or bad.
Ortofon T-7000 is 1x20 gain it perfect fo SPU Miester http://20cheaddatebase.web.fc2.com/needie/NDOrtofon/T-7000.html
Kanno USS-30 is 1x30 gain perfect for old SPU and Supex
Susumu You can hear how it sounds in my files I sended to you and compared with another transformers - it named Kanno30
Regarding the sound quality of this transformer, the exhibitor cannot feel the delicate feeling of the high range, rich overtones, and fresh resolution like the Ortofon T-7000, which is also exhibited at the same time. It is described as a traditional sound that is faithful to the orthodox basics.
Kanno USS-30 perfect transformer for old SPU
やはりデシベル算の計算が間違っており、WE-618B 250Ω結線時の昇圧比は20dBでした。
HPに具体的な計算方法や数式を投稿いたしましたので、興味のある方は計算してみてください。
（1/7投稿 MCカートリッジとトランスのマッチング）
You are a dear audio friend and it is not your fault and I do not have any bad feelings towards you, but at the moment in my country your country is viewed very harshly. and it is unlikely that your request will be answered. I'm sorry.
I googled all this foto in the web
"InJapan" is intermediary company to buy from Yahoo ,but they told me the Japan banned many items to export from Japan, I can send this tubes to you if you can ship them tj me from Japan by yourself
It's amazing.
Did you take it all apart?
Normally, it would not be a munitions item, so we might be able to arrange an agency, but in the current situation, it may be a little difficult to send electrical parts to you.
This is the first time I see this site called In Japan.ru, is it a Russian site?
It seems that it is a scheme that can be delivered to Russia, but I do not know the details. I'm sorry.
The only thing in your transformers collection and mine is the T-30 and No.6600.
It seems that Kanno's transformer is still being used with great care.
Have some interesting foto inside transformers to check the size of permalloy core : WE285, WE264, JS, Haufe, Triad HS, WE618
https://drive.google.com/drive/folders/1N9DmGxfqigcSEgV4qZC7vp_SnYCkHXNo?usp=share_link
Susumu this is my table of transformers
Yes Susumu KS9450 and WE618B have the same dimensions,but can't have the same sounds and input -output impedance,and as with WE285L and another WE285 transformers they all very different.
Susumu I have problem to send to Russia tubes I buy on Yahoo,can you inquire about sending tubes to Russia by any post?
https://injapan.ru/auction/h1071865009.html
https://injapan.ru/auction/s1074400419.html
https://injapan.ru/auction/m1074332276.html
https://injapan.ru/auction/c1074335955.html
https://injapan.ru/auction/n1073512972.html
https://injapan.ru/auction/b1073443613.html
Shigetaさま
旧年中は大変お世話になりました。
当方もMCカートリッジと組み合わせるMCトランスのインピーダンスの関係など、まだまだ理解できておりません。
Shigetaさんが所有されているWE-618Aもコアから5本個別色の引き出し線が伸びていると思いますが、プライマリー30/250Ωでセコンダリー50kΩですから、250Ω結線でも昇圧比が40dBありかなりgainが高いようですよ。
（たぶん笑）
英語の方は面と向かっての会話は無理ですが、Google翻訳サイトを利用して先方の英語を日本語に変換し、こちらの日本語を英語に変換して投稿するような文章で会話する程度ならなんとか可能です。
慣れればshigetaさんでも簡単にやり取りできますよ。
本当にShigetaさんのシステムは車で言うと12気筒エンジンを積んでいる高級車を彷彿させるパワフルなシステムですが、我が家のシステムは全く逆の2〜3気筒の小出力エンジンを積んだ小型車のようなイメージに感じます。
システムの駆動系をどんどん細分化され、ますます繊細な音色が出るようになったと想像されますが、当方はこれまで通りシンプルイズベストの全体バランス重視で参ります。
今年もどうぞよろしくお願いいたします。
K様
遅ればせながら本年もよろしくお願い致します。
私からのご連絡が思わぬ展開になって、私としてもびっくりしているところです。
余計なことをしてしまったのかなあと思う反面、オーディオの楽しさを味わっていらっしゃるKさんの様子から、やっぱりお知らせしてよかったのかもと自問自答しているところです。
ただ、1/5付のブログの内容は電気音痴の私には難しすぎてよくわからない内容でした。トランスの足が一次側二本、二次側二本なのだからほかに繋ぎようがないのではと思ってしまうレベルの私ですから。
それにしても海外の人と英語でやり取りしているKさんには恐れ入りましたと言うしかありません。英会話音痴でもある私にとっては夢のような話です。
当方、最近はプリアンプのヒーター電源を別筐体で作成してもらたところ、その効果の大きさに驚いているところです。
もともとはヒーターハムを少なくしたいということで着手したのですが、わずか6.3Vのヒーター電圧をブリッジ整流から両波整流に変えただけなのに、こんなに違うとはと思うほど音質面で大きくレベルアップすることが出来ました。
あらためてオーディオの面白さを感じさせてくれました。
The 618B seems to have 30ohm/600ohm primary and 25kohm secondary, so it's not the same transformer. Does that mean that the transformers are made with the same permalloy core and have the same dimensions?
Is this the wiring when using with SPU?
Thanks Susumu
Is this OK?
Primary (pin 1 to 2): 10.1 ohms. Secondary (pin 3 to 4): 927 ohms.
So how should I do the wiring?
Yes with the tester
1-2 on right of the foto,and 3-4 on left of the foto
<1,3> signal is connected with a black cable and <2,4> ground is connected with a WE single wire.