Audio Database


DIATONE DS-10000 Klavier

DS-10000 is the speaker with which DIATONE commemorated and put the 40th anniversary on the market.
Although it is another about this model and the page is prepared, I would like to write the contents which it delved into a little more deeply about this speaker here.

As you know, I regard as or that DS-1000 is adopted as the base of DS-10000.
It seems that it is reasonable in DS-1000, such as DS-3000 and DS-2000, having been chosen as the base as it is.

It seems that DS-1000 was considered to have a high possibility after a system constitutes [ basic ] by the Diatone of those days. It seems that it was a form where even the critical point which is already hard to move was boiled down and completed, and it was large in basic composition that the data used as a base was also assembled.

There are a Woofer and a talk of if 30cm was better. However, seemingly that a 27cm aperture was adopted is the size which came out of the necessity of being 3 way composition. It is a thing that it was decided from the conclusion "the height of fundamental quality has that the small caliber is [ much ] better than a large caliber." (This may be the reason DS-20000 and DS-20000B also carried out 1000 systems at the base) .
Moreover, it is the result of even an acoustic radiation pattern being examined by computer analysis also about unit arrangement at a research institute.

Then, let's see about each composition part.


It is general drawing of a tweeter.
The most different feature from DS-1000 is that the boron D.U.D diaphragm has "three-step iris diaphragm structure."
IDS-1000 and appearance are [ sub-frame ] alike. However, unlike the product made from a brass of DS-1000, a gun metal began to delete and the workpiece is adopted. It seems that moreover, it has structure which differed in details. It seems that the high region play in which a reverberation is thereby still more beautiful is enabled.
The felt for vibration suppressions is stuck on the bottom plate.
It is a diaphragm of a tweeter.
The right is a thing of DS-1000 and the left becomes a thing of DS-10000.
This characteristic three-step iris diaphragm was developed by DS-5000, the rigidity of a diaphragm goes up it, and there is a merit to which a high region play limit is extended.
IHowever, seemingly the very hardness thing was required by production technology and adoption to a mass-production model was not completed.
It is only DS-10000 and DS-5000 that this three-step iris diaphragm is incidentally adopted in the range which I know. The same limited model is not adopted as DS-20000 or DS-20000B, either.
Cork material was stuck on the frame made from a gun metal, and degradation of the signal to noise ratio by the unnecessary radiation of a frame part is prevented.

Mid range
It is general drawing of a mid range unit.
Back covering is fabricated by the hand iris diaphragm (method of spinning), in order to make it distribute structurally so that vibration mode may not concentrate on one place. Moreover, the number of attachment screws is also changed into eight from four of DS-1000.

Incidentally, in DS-1000HR put on the market after this, it is being similarly fixed by eight.
It is the sub-frame and back covering of DS-10000 and DS-1000.
Structures differ not only in a difference and the method of structure of a material but in the fine portion.

It is general drawing of a Woofer unit.
Although appearance does not have other DS-1000 series and great differences, each is pressed by hand structure and the delicate curve of an aramid honeycomb corn is the feature.
The photograph of a corn part.
It is said that there is intensity, so that it does not break, even if an adult rides on a corn in this state.
The material is changed into the aramid (Kevlar) by DS-10000 from the polyamide of DS-1000.
The honeycomb of the aramid was used for the antenna of an artificial satellite etc.
Magnet part,
A left magnet is built into a right frame and it is fixing.

For every unit, it is divided and is attached to the substrate of spruce material.
The radial supplying system to each unit which supplies electricity radiately from an input terminal for proper current supply is adopted.
As for the wire rod, gilding is given to LC-OFC and a sticking-by-pressure sleeve.
It seems that the condenser for tweeters is different although it is the network which incidentally resembled very much DS-1000HR put on the market after this.

Because the 1000 same systems were made piano paint by glimpse as there was a prejudice especially in the enclosure although the processing which was very scrupulous also about each unit was seen, it is visible, but it has structure appropriate for a limited model with which the hand was very much crowded.
On both sides of the washer of oxygen free copper, it is devoted to the demon nut furnished with a unit attachment screw at the baffle plate.
Moreover, in order to realize the outstanding signal to noise ratio, the rubber cap is attached to the attachment screw, and the resonance is suppressed thoroughly.
It is said that the frame and the screw "resonance" are used as part of the production of sound in the common system.
The back of a baffle plate.
A baffle plate is a product made from a lumber core of the Sitka spruce.
Sound-absorbing material.
The wool felt is stuck on a pleuron side on the whole surface, and it fills up with wool yarn 100% of the sound-absorbing material.
In the glass wool currently generally used, seemingly the hysteresis noise which a sound-absorbing material emits will soil the sound of the speaker itself, and this material was chosen.
The left is a cut photograph which the difference in the composition component of the enclosure understands.
It is said that pleuron sandwiched the hard chipboard by the multilayer laminate of the China material, the baffle is using the lumber core material of the Sitka spruce, and the Naked material of Matoa from New Guinea used for grand piano etc. is used for the attachment structure material of an aspect-of-affairs part and a baffle.
All the materials are examined one by one, and they are used, selecting them carefully truly.
Moreover, a right photograph is a cut photograph which the group structure of a baffle side understands.
The board and the baffle are joined using the attachment component of Matoa material.

From here, I see about the data at the time of the development published with the magazine etc.

Data at the time of development
Enclosure of an initial stage.
Although it is unclear, structures, such as an internal reinforcement, are very different.
Enclosure of the last specification.
reinforcement -- since the crosspiece is arranged based on a distributed vibration structure original with a Diatone, each component is attached independently to each field, without being combined.
Enclosure which paint finishing is not made.
The material is examined and used.
In order for baffle material and a backlining to distribute vibration mode, consideration of changing the direction of lumber core material is carried out.

It is the enclosure and others used for a weather resistance test or modal analysis.
If it sees finely, the marks of change etc. are known and it is very interesting.

Finally let's see a stand.

It is the stand which remained to the final stage in the development process of the speaker stand.
This imagines grand piano and is made. It seems that it has a form of a leg with features and there were some which are hard to throw away in sound quality. However, sale was not carried out.

At the last

There is DS-10000 as it commemorated the 40th anniversary and was made, and it differs from the 4-figure series as which mass production nature was considered to some extent. Being conscious of musical instruments, such as a piano, it is a thing adhering to the material and combination of the enclosure, and if it is not limitation, it has the extravagance which cannot be made.