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Kaitai Shinsho vol.15 DENON Turntable DP-6000 Description Kenji Kondo and Hiroyuki Satake, photography Hiroyuki Satake. It only turns correctly merely intently. But, the technology and passion which are supplied there make sounds. DENON which reigns supreme in a pro's world noted opportunity DP-6000 were born as most highly complete "DENON Quartz lock direct turntable" in November, 1976. A unique design and classical finish. This machine has the mechanism which was thought human engineering-operatively. The center drive of motor direct connection. Except for a belt or eyedla, all of a play, a stop, and a speed change were controlled electrically. Moreover, the rotation speed of a turntable is detected and the number of rotations of a motor is controlled. The servo circuit was added. It got a stable operation. It is an epoch-making system. (Kondo)

It has various advantages as a direct drive turntable. DP-6000 cleared conventional eyedra type and a conventional belt form. Rotation unevenness by modification and wear of rubber. Mechanical vibration by high-speed rotation of a motor. Electric vibration by the imbalanced rotation magnetic field of a motor, and frequency of a power supply. Change of the speed by change of voltage. Turntable was the lightweight. Prevented wear of an axis. Simultaneously, it was also shortening of the standup time of a turntable. This can maintain the performance stabilized over the long period of time. I can say that DP-6000 is the most ideal turntable. (Kondo)
If a sheet is removed, the hole is vacant two. A finger is hooked here and a platter is removed. Position adjustment of the characteristic magnetic head of the turntable of DENON is also performed here. You have to remove, after separating a magnetic head from the wall of a platter, when removing a platter. (Satake)
	It is the back side of a platter. A most outside is a stroboscope. (Satake)
Magnet is contained in the place of the wall on the back side of a platter. A head reads this and rotation is adjusted. (Satake)
	is a head. You can adjust the position by loosening a screw. (Satake)
Under the platter, the 50/60 kHz change switch is attached. (Satake)
	A whole image is like this. (Satake)
It is the cover of a bottom. As for DP-6000 used this time, the case is distorted. (Satake)
	If a cover is opened, it is like this. In the middle, it is a motor. The surroundings of it, three substrates and the transformer are arranged. (Satake)
It is the photograph that removed the cover. (Satake)
	It is the reverse side of the switch of a power supply. They are used by two switches, compounding. One has not come out of the cable from a right golden switch. It seems that it is attached only to push the arm of the silver of a left switch. (Satake)
It is the up of a dial. (Satake)
	It just removed the switches of the button reverse side. A square white thing is the button which appears from a table. Although it is STOP, START, and the 45 and 33 from the left, the light is attached to buttons other than STOP. (Satake)
The large button of a photograph is a button of STOP and START. Do you see the difference? Sponge like cushion is attached to the button that the light is attached on the back side. It is the mechanism that a light appears vacantly. (Satake)
	If a dial is removed from a case, it was a form like an umbrella. (Satake)
When the case of a stroboscope was opened, the light and mirror of a stroboscope stuck. (Satake)
	I can remove the light of a stroboscope easily. (Satake)
Since the stroboscope is attached to the back side of a platter, the turntable of DENON reflects it in a mirror and we can see it. (Satake)
	It is a transformer. The quite large thing is attached. (Satake)
The transformer is attached which hangs down from a top. A thing like a damper is attached also to the screw. (Satake)
	If I remove the screw on a transformer, a washer and a pipe will come out. The mechanism of a suspension is built with this and rubber. (Satake)
I can open only one case of a transformer. (Satake)
	When removing a motor, it separates only by removing four screws. (Satake)
It just removed the motor. The surface is also stained with oil. (Satake)
	The part number is writing beside the motor. It was written as "IE-963." (Satake) This machine miniaturizes the capacity of a motor and its drive power supply with the completely same composition as the DN-302F type for broadcasting stations. On the turntable for broadcast, the time required at the time of starting is very short. DN-302F type is about 0.2 seconds in 33 1/3rpm. Since it is rare in especially home use to require starting time, in this machine, it has been about 1 second. Except standup time, it can be enough used also as an object for broadcasting stations. It is a highly efficient perfect servo turntable. (Kondo)
The light of a stroboscope is direct to a substrate and is attached to it. (Satake)
	Three substrates are attached of DP-6000 and the circuit of it is also quite complicated. (Satake)
The cable which has come out of the transformer is a cable of a blue color. The terminal is attached at the tip and detachment are easy. (Satake)
	They are a substrate and a motor. Thus, the motor is surrounded. (Satake) The early speed detection machine adapting magnetic record of a very high response, Also to change of number of rotations, or change of load, a rotation magnetic field is smooth and little vibration, it is using the solid rooter type servo motor by the low voltage, At the point, a lightweight turntable deferent from the concept of an old turntable. Nevertheless, wow flutter, and run pull, are that it cannot measure in the common measuring instrument. (Kondo)
It is the circuit of the power supply. The fuse sticks here. (Satake)
	It is like this if all are removed. This chassis is really made of fabrication. A transformer is attached to the place of an upper right long and slender griddle. (Satake)
It seems to be that DP-6000 is complicate by electric. I was surprised that such complicated structure is required for only by turning the turntable correctly. I disassembled and noticed that this DP-6000 structure is like the open reel deck. When I disassembled TEAC X-10R before, there were many similar circuits and a huge motor. Furthermore, the tape head is also attached to the turntable of DENON. And the form of a switch and the feeling of operation are also somehow alike. I understand, even if alike, if a maker is the same. It is wonderful although a maker is different. (Satake) Kaitai Shinsho TEAC X-10R First part http://www.hifido.co.jp/merumaga/040702/kaitai.html Kaitai Shinsho TEAC X-10R Second part http://www.hifido.co.jp/merumaga/040709/kaitai.html Nippon Columbia Co., Ltd. which is the past of DENON, It started the general marketing of cartridge DL-103 that was the object for broadcasting at 1970. Also in public use, DENON brand began. They are development and manufacture of the first digital PCM recorder in the same year. And at 1972, the first digital recording LP was carried out on the market. With the high technical power and product development power. High evaluation gained all over the world as a high-class audio maker. The direct drive turntable was successively put on the market from each domestic company in the 1970s. Highly efficient-ization of a turntable tended to change from the belt・eyedla system to the direct system. Also in DENON, since direct drive turntable was put on the market as an object for broadcasting stations in March, Showa 45, in the present of the digital heyday, it has been used at each broadcasting station and has acquired popularity. DP-6000 is the system which reached the peak as the turntable in the world. And this arranges in marketing the DN-302F type servo turntable which has already played an active for broadcast. The composition and performance are the same as that of 302F type. (Kondo)

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