Thx ian,Unless I'm being a bit stupid here, you will need to use a separate transformer as the only way to get a suitable voltage ac supply from the player would be to use the player gnd. I suspect that the clock will have issues if you pick up the player gnd and connect it on the AC input to the clock along with the FH11 (Which will give you the required AC voltage but gnd issues). This is because the clock out gnd will not be the same as the AC input. I think that nearly makes sense!
In any case, a small 9 or 12v transformer would be best. (3.2 or 7va) You can hook up the input side directly from the mains inside the case (after the on off switch) and parallel the secondary's into the AC in of the clock. 7va 12v transformer (dont bother with a 3.2va its only 50p cheaper!!!)
Once you have a transformer for the AC supply, you can connect the clock gnd to the player gnd. Now identify the 16.9344mhz out. If you have a 33.8688 oscillator on the board this will be MCK2. If its a 16.9344mhz, its the MCK. This needs to feed into the DAC on pin 28. If you remove the link U196 close to the dac chip, you will isolate that pin from the original clock circuit. Connect the 16.9344mhz feed into the hole left by U165 closest that dac. Its probably a good idea to test it at this point. Assuming all is good, you can then remove the rest of the clock components or what I would do is cut the trace to pin 1 as close as possible to the dac.This will fully isolate the original clock circuit and by cutting it short, stop pin 1 acting like an antenna (see acoustica clock hack). Test again at this point.
Now you can reclock the servo using 8.46mhz output. If you used MCK for 16, then use MCK2 for 8. If you used MCK2 for 16, you need MCK4 for the 8!
The servo chip (TDA1301 Q104) is close to the mech ribbon connector. You should see a little blue 3 pin blob (X101) this is the servo clock. Remove x101 and R126 then feed the 8.46mhz into the hole where the resistor was furthest from the mech.
That should be it!
Make sure you test at the various stages then if something doesn't work as you expected, you know which bit of the mod caused the problem!!!
I'll try and find a pic so you can see the connections in one of my players
Best of luck!!
This clock is much more complicated to fit than some of the others due to its ac requirements and ability to reclock the servo. Assuming the oscillator quality, it will be worth the effort !!!
im looking at an encapsulated 12v reg from rs only 7.20 240ac in 12v x2 out for the feed taking ac from pre transformer on the player the the rest as you say looks a nice unit hope it performs 4 days to get here from taiwan did it the 4 panas 20,000 uf and 16,000 on the psu and shorted the fuses major mod that one thx again ian i await the tx.
how much va will be need tho 5 be enough.
thanks alan
yes thats it had 40 vishay diodes too do the bridge with bit worried by the connections by the xtal tho. looks a nice unit very well made.]have you got the listing details? If it wants AC, it must have the recs and regulation on board.
Is it this one?
thx ian great advice alan
I'd go for whatever VA you can without getting loads more expensive.
The 7va version of that encapsulated is only about 50p more again. The only trouble with those tx's is that they are better mounted on a pcb (veroboard is fine). If you are mounting free, its better to use an open torroid (not the RS value ones as they dont come with the mounting plates).
I saw you added those big caps and got the balance back!!! ;-)
The 7va version of that encapsulated is only about 50p more again. The only trouble with those tx's is that they are better mounted on a pcb (veroboard is fine). If you are mounting free, its better to use an open torroid (not the RS value ones as they dont come with the mounting plates).
I saw you added those big caps and got the balance back!!! ;-)
More of everything best 16 quid ive spent to yet my ki reference player is left for dust all ive done is hdam bypass lm4562s all muting trannys and blocking caps removed big caps on the psu shorted fuses and some damping on the case god knows what you guys get out of you players.
alan
"More of everything best 16 quid ive spent to yet my ki reference player is left for dust all ive done is hdam bypass lm4562s all muting trannys and blocking caps removed big caps on the psu shorted fuses and some damping on the case god knows what you guys get out of you players.
alan"
And I thought Yanks like me talk funny! (a wee bit of punctuation makes the dram go down easier mate)
Don't be over-impressed about "you guys", It's pretty much a steep up-hill climb from where you are and speaking from my limited experience, there are some rough spots. Let it settle and listen for a good while before going any further
alan"
And I thought Yanks like me talk funny! (a wee bit of punctuation makes the dram go down easier mate
) Don't be over-impressed about "you guys", It's pretty much a steep up-hill climb from where you are and speaking from my limited experience, there are some rough spots. Let it settle and listen for a good while before going any further
lol yanks my partners an american from chicago, you know the feeling we want it all right now."More of everything best 16 quid ive spent to yet my ki reference player is left for dust all ive done is hdam bypass lm4562s all muting trannys and blocking caps removed big caps on the psu shorted fuses and some damping on the case god knows what you guys get out of you players.
alan"
And I thought Yanks like me talk funny! (a wee bit of punctuation makes the dram go down easier mate
Don't be over-impressed about "you guys", It's pretty much a steep up-hill climb from where you are and speaking from my limited experience, there are some rough spots. Let it settle and listen for a good while before going any further
alan
Wow! a comma slipped in . Sure I know the feeling...actually I wanted it all by yesterday. Four years later I'm still wanting more. I want; more S'regs, the C2 clock, etc. But I'm not sure the considerable expense is going to bring me nirvana. I guess I'm just experiencing audiophile sobriety for a change. Go for it! but be prepared for some moments of doubt
. Sure I know the feeling...actually I wanted it all by yesterday. Four years later I'm still wanting more. I want; more S'regs, the C2 clock, etc. But I'm not sure the considerable expense is going to bring me nirvana. I guess I'm just experiencing audiophile sobriety for a change. Go for it! but be prepared for some moments of doubt
only the very clever or very rich will get it. Me I have a shiney Lexan cover and I can see all the gubbins and the cd spinning, so I'm in a (minor) pig heaven.
Question for the wise: It used to be that one was supposed to banish all exterior light source. Me I'm letting it in. Is this terribly awful and non-audiophile? Should I be worried? Anxious?
Question for the wise: It used to be that one was supposed to banish all exterior light source. Me I'm letting it in. Is this terribly awful and non-audiophile? Should I be worried? Anxious?
Just checking my pulse. Seems I'm still here. I was kind of wondering what Rapture was like...maybe buying some sort of gear encased in thousand year old oak, with resistors made by Japanese virgins and chuck full of Deuland silver caps? Or maybe this is death but you don't notice the transition?
Connect the clock to the Digital ground or the nearest available ground ?
I have the same clock in a different machine and the answer to this would be very helpful.
Thanks in advance
I'd need to check but I think they are all the same in this player!
I would connect it to the PSU gnd on the cap just before the 5v reg as its sort of an attempt at a star centre point.
What happens on 300 hours exactly ?
It's so amusing - but having said that I can almost feel the moment my Piano goes off so it MUST be the same
It can't be ignored because ' burn in ' is so frequently mentioned.
It just seems so difficult to observe ( I've tried )
Is it perhaps....all complete.bol...ks ?
It's so amusing - but having said that I can almost feel the moment my Piano goes off so it MUST be the same
It can't be ignored because ' burn in ' is so frequently mentioned.
It just seems so difficult to observe ( I've tried )
Is it perhaps....all complete.bol...ks ?
What happens on 300 hours exactly ?
It's so amusing - but having said that I can almost feel the moment my Piano goes off so it MUST be the same
It can't be ignored because ' burn in ' is so frequently mentioned.
It just seems so difficult to observe ( I've tried )
Is it perhaps....all complete.bol...ks ?
I walked into that one. Must be the after effects of yesterday's Rapture.
I'll re-phrase my observation: At an ill-defined point which occurs around 300 hours, there-abouts...what was a rather uninvolving, slightly mechanical sound, becomes more fluid and musical and pleasing to the ear. Ok?
Discussions about component burn-in, cable directionality, audiophile fuses, etc. etc. invariably become contentious, bad-tempered and tiresome. They usually end up in numbingly boring dead-ends concerning double-blind testing. I would outstay my welcome in this charming thread if I initiated yet another one. By rights none of the above 16,000 posts have any basis in reality and we are all seriously deluded in imagining we can improve upon a cdp that was delivered perfectly designed and constructed from the factory. Poor fools that we are, we continue to labor in our folly, to the delight of rational beings.
Can I rest my case there? I enjoy contention as much as the next man but sometimes it is better to obstain and avoid shame and ridicule.So sorry Mr Shepperd - couldn't resist !
Wasn't having a shot at you - I truly have waited for burn in but often wondered if it was my ears and brain adjusting.
I do though know when my piano goes out and then I painstakingly and rather stupidly re tune it all again when I don't really need to - now who's deserving of ridicule
Oh - and I once got my Kimber cable the wrong way round and it sounded weird until I switched it back correctly - I can't explain that either !!
Wasn't having a shot at you - I truly have waited for burn in but often wondered if it was my ears and brain adjusting.
I do though know when my piano goes out and then I painstakingly and rather stupidly re tune it all again when I don't really need to - now who's deserving of ridicule
Oh - and I once got my Kimber cable the wrong way round and it sounded weird until I switched it back correctly - I can't explain that either !!