Kaneda Turntable Circuitry PCBs...Anyone from Japan knows where to get one?

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happycat

happycat

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Joined 2004
#1
#3
The boards appear to be an ongoing DIY project of this particuar individual. Nowhere does it indicate they or anything else on his site are for sale. I dont know where you are getting the Kaneda part from either, the only reference to Kaneda are the solid state amps he is building which are "Kaneda-style".

?

Richard
 
#4
The circuits actually do seem to be designed by Kaneda Akihiko. They were featured in a number of issues of MJ and also appear in two of Kaneda's books. Details on the following site;

http://www.geocities.co.jp/Technopolis/5053/analog/turntable01.htm

If you follow the links, though, you'll see MHI is the only one who's made PCBs for them. Everyone else just makes them P2P on perfboard the old fashioned way. Honinbou, why not do that too? I know everyone has a skill level they're comfortable with, but this recent trend towards PCB groupbuys is probably preventing people from even trying to do P2P. Once you get used to laying out the ciruits beforehand on graph paper, and transfering them to perfboard, it's not that hard and it certainly feels more DIY than just soldering up a PCB.

If you're dead-set on PCBs, you could design them yourself or contact MHI. I'm sure your Japanese is good enough to be able to find his contact info.
 
#5
Thanks richard. You are right that the guy might make the boards just for himself 'cause I spotted kanji "DIY control PCBs prepared by an unbusy man..." somewhere on that page.

greyhorse, I could cook up some perf board versions easily, but the problem is, the schematic shown on that site isn't complete???

The full schematics with adjustment instructions used to be hosted on konton's blog/diary but his website suddenly vanished...
 
#6
If you get me the complete diagram, I'd be willing to CAD up the schematics and PCB.

Actually, I'd like to do it with more up-to-date controller IC's and BLCD motor drivers. However, that would require a significant amount of development time, unless someone already experienced in designing these circuits could design that circuit quickly.
 
#7
Just looking at those circuits given in the first links, they seem a step backwards from the SP10 circuitry. A 555 to set motor speed, am I reading that right? The SP10 used a proper crystal oscillator and converted it into a square wave for the logic. I don't have my SP10 any more, but if I were to start playing with the circuit, I'd be looking at converting the motor drive from rectangular steps to sine waves.
 
#8
EC8010 said:
A 555 to set motor speed, am I reading that right?
Click to expand...

The 555 seems to be configured as a Schmitt trigger in the FG circuit, it then feeds via the 4528 pulse generator to a 4046 PLL , the reference input of which is the quartz crystal derived clock.

I agree wholeheartedly about the sinewaves. I've been playing with a really simple sinewave generator based on dividing a clock by eight and stepping the output, then running through a switched cap filter. Produces nice quadrature sinewave pairs with about 6 chips.
 
#12
They all share the same basic schematic. However the SL1200 motor runs at a different frequency so you have to adjust the dividing frequency at the 4060. BTW the FG section of the SL1100/1200 could be applied to the SP10 too.

kaneda san claims that the CD4XXX series logic gives lower noise than higher speed logic devices.
 
#13
honinbou said:
They all share the same basic schematic. However the SL1200 motor runs at a different frequency so you have to adjust the dividing frequency at the 4060. BTW the FG section of the SL1100/1200 could be applied to the SP10 too.
Click to expand...

So does that make things easier? The SL1200 certainly has more compact circuitry, and the model is still supported by the manufacturer. A question remains about the availablility of the (custom?) IC's AN6682, AN6680 and AN6675, though.

kaneda san claims that the CD4XXX series logic gives lower noise than higher speed logic devices. [/B]
Click to expand...

Yes, this is true. The CD4XXX series can also tolerate a higher supply voltage (12~15V, IIRC).
 
#18
Mmmm, I bought the Kaneda book when I was teaching English in Tokyo in the mid-Nineties, and then cleverly managed to lose it somehow when I returned to the UK. I have an SP-10 Mk2 motor unit with the full-width rack controller, and was considering making the Kaneda controller, but this bloke's solution looks a lot tidier without the P2P.

A friend of mine speaks perfect Japanese, but is also married with a couple of young kids 🙂 If no-one else has already contacted this guy, I might ask my friend to email him. Be nice to get both sides of the PCB for a little group production. I'd certainly be up for a set of boards.

BTW, another friend of mine, a real SP-10 Mk2 fan, moved all the electronics out of his deck and into the full-width controller and said it sounded quite a lot better as a result, even without electronic alterations.

Cheers, Jon.
 
#19
JON

I too have the same set up as you with the rack mount PS and the boards from the motor have been taken off-board to that box. It sounds MUCH quieter than it used to .....but not as quiet as it does now as there is a 'total dead' in the PS!!

I too would be interested in boards for a simpler more modern supply and control unit.

Have you seen steerpike's thread on a potential new design? Search the analogue pages here on DIYaudio.

Brian
 
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