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The cartridge release for exclusive use of the monaural LP of a new method

We deny an existing monaural cartridge so far.

The existing structure is because I cannot play a monaural LP faithfully.
And we made a cartridge for exclusive use of the monaural LP with a vertical axis concentration method.
The cartridge of the vertical axis concentration method plays a monaural LP faithfully.

 

 

The monaural cartridge developed in the monaural music times is made to play only a monaural LP.

The cartridge of the monaural music times does not work lengthwise, and it is made with the structure that can trace the amplitude by the movement of the cross direction precisely.
I evolved a monaural cartridge of the time more, and a cartridge for exclusive use of new monaural recording was born.

structure

Why is a monaural cartridge necessary in the present age?

There are a lot of monaural LPs to excellent records such as classical music, jazz, a lock.
When I look for the LP of the excellent performance, monaural recording knows a thing more than the half.
And I want to come to listen to a monaural LP by a good sound.

There are people purchasing a monaural cartridge easily.
And there are people playing a monaural LP with an existing monaural cartridge and stereo cartridge.
The people feel a monaural LP like an old sound by the influence of the cartridge.
And an image is left as an old LP.
In fact, the monaural LP has better sound than the stereo LP.
The reason is simple.
It is natural that a sound is better than the stereo LP to put two signals in as for the monaural LP which installs one signal in one ditch.

 

We pursue that we hear a splendid performance from an LP.
It is the most important for a hobby called the audio system.



Kotetu
I produced "Kotetu" to lower a price.
However, Kotetu thinks sound quality to be important.
The structure is the same as Spirit and Premium.
The user can listen to a monaural LP by real sound quality.
The stylus of Kotetu MONO was changed from conical to elliptic on October 2, 2017.
The trace ability slightly improved by elliptic.
From June 2024, Kotetu 78rpm will be changed to a pure conical diamond stylus of 3mil or 4mil.


 Product name  Monaural Cartridge "Kotetu MONO"
 78rpm Cartridge "Kotetu 78rpm"
 Weight  About 6.4g
 Size  W 18.0mm × D 23.5mm (excluding terminals)
 Tracking Force  "MONO" 3.0 - 4.5g
 (recommended 3.5g)

 "78rpm" 3.0 - 5.0g
 (recommended 4.0g)
 Impedance  About 4Ω
 (About 0.3mV output)
 Compliance (10Hz)  around 8×10-6cm/dyne
 Suitable Temperature  20-30 Celsius (most suitable 25 C)
 68-86 Fahrenheit (most suitable 77 F)
 Stylus Shape  "MONO" 0.4 x 0.7 mil bonded elliptical diamond stylus

  "78rpm" 3 mil or 4 mil pure conical diamond stylus
 (Until May 2024, we used a bonded conical diamond stylus,
 but from June 2024, we changed to a pure conical diamond stylus.)

Stylus size for 78rpm pickup cartridge
3mil is the basic stylus size that works well for most era 78 rpm records.
4mil is suitable for 10" 78 rpm wire recordings from around 1925.




Spirit
"Spirit" is a representative cartridge of the vertical axis concentration method.
It is steady deep clear sound quality.
And the delicate, speedy sound can express the feelings of the musician.
The stylus of Spirit MONO was changed from conical to elliptic on October 2, 2017.
The trace ability slightly improved by elliptic.
From June 2024, Spirit 78rpm will be changed to a pure conical diamond stylus of 3mil or 4mil.


 Product name  Monaural Cartridge "Spirit MONO"
 Monaural Cartridge "Spirit MONO high"
 78rpm Cartridge "Spirit 78rpm"
 Weight  About 9g
 Size  W 18.0mm × D 23.5mm (excluding terminals)
 Tracking Force  "MONO" 2.0g - 4.5g
 (recommended 3.5g)

 "78rpm" 3.0g - 5.0g
 (recommended 4.0g)
 Impedance  "Spirit MONO" About 5Ω
 "Spirit 78rpm" About 5Ω
 (About 0.5mV output)

 "Spirit MONO high" About 90Ω
 (About 5.0mV high output)
 Output changed from 3mV to 5mV (July 2022)
 Compliance (10Hz)  around 8×10-6cm/dyne
 Suitable Temperature  20-30 Celsius (most suitable 25 C)
 68-86 Fahrenheit (most suitable 77 F)
 Stylus Shape  "MONO" 0.4x0.7 mil bonded elliptical diamond stylus

 "78rpm" 3 mil or 4 mil pure conical diamond stylus
 (Until May 2024, we used a bonded conical diamond stylus,
 but from June 2024, we changed to a pure conical diamond stylus.)


Stylus size for 78rpm pickup cartridge
3mil is the basic stylus size that works well for most era 78 rpm records.
4mil is suitable for 10" 78 rpm wire recordings from around 1925.





PremiumBEII PremiumBEII
Production of PremiumBEII has ended.

 Product name  Monaural Cartridge "PremiumBEII MONO"
 78rpm Cartridge "PremiumBEII 78rpm"
 Weight  About 11.8g African Blackwood
 Tracking Force  "MONO" 2.0g - 4.5g
  (recommended 3.5g)

 "78rpm" 3.0g - 5.0g
  (recommended 4.0g)
 Impedance  About 6Ω
 (About 0.7mV output)
 Compliance (10Hz)  around 8×10-6cm/dyne
 Suitable Temperature  20-30 Celsius (most suitable 25 C)
 68-86 Fahrenheit (most suitable 77 F)
 Stylus Shape  "PremiumBEII MONO"
  0.7 mil or 1.0 mil pure conical diamond stylus

  "PremiumBEII 78rpm "
  3.0 mil pure conical diamond stylus





Zero Zero
"Zero" is the best product in a monaural cartridge.
Zero improved sound quality more by the axis of the non-magnetic body.
Please enjoy clearer sound quality.
The output of Zero is 0.4mV.
A new 4mil 78rpm pickup cartridge has been added.

 Product name  Monaural Cartridge "Zero MONO"
 78rpm Cartridge "Zero 78rpm"
 Weight  About 10.2g African Blackwood
 Size  W 17.8mm × D 22.9mm (excluding terminals)
 Tracking Force  "MONO" 2.0g - 4.5g
 (recommended 3.5g)

 "78rpm" 3.0g - 5.0g
 (recommended 4.0g)
 Impedance  About 6Ω
 (About 0.4mV output)
 Compliance (10Hz)  around 8×10-6cm/dyne
 Suitable Temperature  20-30 Celsius (most suitable 25 C)
 68-86 Fahrenheit (most suitable 77 F)
 Stylus Shape  "Zero MONO"
  0.7 mil or 1.0 mil pure conical diamond stylus

 "Zero 78rpm "
  3.0 mil or 4.0 mil pure conical diamond stylus

About stylus size of Zero MONO
0.7mil is suitable for reissue monaural LP and a monaural LP of after 1960.
1.0mil is suitable for the monaural LP of a deep groove of the first press of the 1950s.
However, both styli can trace the monaural LP of all generations without a problem.
When you listen to the monaural LP of all generations, we recommend 0.7mil.
When you listen to a monaural LP of the first press of the 1950s mainly, we recommend 1.0mil.

Stylus size for 78rpm pickup cartridge
3mil is the basic stylus size that works well for most era 78 rpm records.
4mil is suitable for 10" 78 rpm wire recordings from around 1925.





INFINITY
"INFINITY MONO" made heavier than ordinary cartridges to pursue ideal.
It is a size outside common sense.
The size of the body is W 24.0 mm x D 28.6 mm.
The length of the terminal is 4.0 mm.
Please check whether it can be used for the tone arm or head shell you have.
That sound expresses unprecedented low tone volume, clear, three-dimensional, and instrumental quality.
It is music, not audio. This cartridge is special.
A new 4mil 78rpm pickup cartridge has been added.

 Product name  Monaural Cartridge "INFINITY MONO"
 78rpm Cartridge "INFINITY 78rpm"
 Weight  About 14.8g African Blackwood
 Size  W 24.0mm × D 28.6mm (excluding terminals)
 Tracking Force  "MONO" 3.0g - 4.0g
 (recommended 3.5g)

 "78rpm" 3.5g - 5.0g
 (recommended 4.0g)
 Impedance  About 6Ω
 (About 0.4mV output)
 Compliance (10Hz)  around 8×10-6cm/dyne
 Suitable Temperature  20-30 Celsius (most suitable 25 C)
 68-86 Fahrenheit (most suitable 77 F)
 Stylus Shape  "INFINITY MONO"
  0.7 mil or 1.0 mil pure conical diamond stylus

 "INFINITY 78rpm"
  3.0 mil or 4.0 mil pure conical diamond stylus

About stylus size of INFINITY MONO
0.7mil is suitable for reissue monaural LP and a monaural LP of after 1960.
1.0mil is suitable for the monaural LP of a deep groove of the first press of the 1950s.
However, both styli can trace the monaural LP of all generations without a problem.
When you listen to the monaural LP of all generations, we recommend 0.7mil.
When you listen to a monaural LP of the first press of the 1950s mainly, we recommend 1.0mil.

Stylus size for 78rpm pickup cartridge
3mil is the basic stylus size that works well for most era 78 rpm records.
4mil is suitable for 10" 78 rpm wire recordings from around 1925.





The monaural cartridge of the vertical axis concentration method is a patent of the Miya-jima laboratory.

By the method, the wide blurring of the coil decreased, and the needle was easy to work aside and did not move at all lengthwise.
Therefore the generation by a highly precise turn became ideal and was able to change the amplitude of the groove of the monaural LP into a sound precisely.
The vertical axis concentration method expresses space of the best monaural music.

 

The cartridge of the vertical axis concentration method plays only a monaural LP. It cannot play a stereo LP with this cartridge.

When it played a stereo LP with this cartridge, a sound is that a distortion and a needle do not work lengthwise, and there is the thing that a needle injures the ditch of the LP.

About using Miyajima-lab monaural cartridges for modern reprinted monaural LPs cut with a stereo cutting machine.

It's okay to use Miyajima-lab mono cartridges for modern new mono LPs.
The reason is that when a stereo cutting machine cuts a monaural sound source, the sound groove is cut only in the horizontal direction.
It can be used on modern reissue mono LPs.

Miyajima-lab mono cartridges do not move vertically.
Therefore it cannot be used for stereo LPs and Duophonic LPs.
These two types of LP cannot be played.
Basically, Miyajima-lab cartridges can be used for all MONO LPs.

If by any chance you find a MONO LP with mixed vertical signals, please give up playing that LP.
However, such LPs are rare.


 

As for blue note LP of the 1,500th level and the 4,000th level, the sound of the cello of Casals and Beatles LP of the product made in U.K., the splendid performance in those days is recorded. And its music revives wonderfully when this cartridge plays a monaural LP.




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