My oh my this thread's been busy today!
Brent, your capacity to squeeze even more into that box never ceases to astound me.... and how long does it take to dismantle? Sometimes I find I've a screw or two left over - I can imagine you looking around and finding transformers and PCBs left over... "oops, forgot that one"...
Speaking of transformers....
My 67SE has had a terrible mechanical buzz from its transformer for as long as I've had it. I tried a few things, like decoupling it from the chassis with rubber grommets etc., which helped but it always bugged the hell out of me. Particularly those late-night listening sessions. My ear/brain was tuned to it because I knew it was there.
I have an old stock standard 63 (with non-SE transformer) which I listen to when my 67SE is undergoing surgery.... so I thought sod this, I'll swap 'em. The analogue stage (Zapfilter2) and clock (Tent XO2) have their own transformers anyway so I wasn't expecting a sound-quality penalty.
Sure enough, I didn't get one. Which is nice. AND NO MORE BUZZING! YEAAHH!!!
The standard TX has the bracket welded to the laminations (?) so they can't vibrate. The SE one does not. Looking at them it seems obvious why one is noisy and one isn't.
The standard TX runs a little hotter, though I may be imagining that.
Just listened to some Kate Walsh on it and it's sounding very sweet.
Brent, your capacity to squeeze even more into that box never ceases to astound me.... and how long does it take to dismantle? Sometimes I find I've a screw or two left over - I can imagine you looking around and finding transformers and PCBs left over... "oops, forgot that one"...
Speaking of transformers....
My 67SE has had a terrible mechanical buzz from its transformer for as long as I've had it. I tried a few things, like decoupling it from the chassis with rubber grommets etc., which helped but it always bugged the hell out of me. Particularly those late-night listening sessions. My ear/brain was tuned to it because I knew it was there.
I have an old stock standard 63 (with non-SE transformer) which I listen to when my 67SE is undergoing surgery.... so I thought sod this, I'll swap 'em. The analogue stage (Zapfilter2) and clock (Tent XO2) have their own transformers anyway so I wasn't expecting a sound-quality penalty.
Sure enough, I didn't get one. Which is nice. AND NO MORE BUZZING! YEAAHH!!!
The standard TX has the bracket welded to the laminations (?) so they can't vibrate. The SE one does not. Looking at them it seems obvious why one is noisy and one isn't.
The standard TX runs a little hotter, though I may be imagining that.
Just listened to some Kate Walsh on it and it's sounding very sweet.
Glenn2 said:My oh my this thread's been busy today!
Brent, your capacity to squeeze even more into that box never ceases to astound me.... and how long does it take to dismantle? Sometimes I find I've a screw or two left over - I can imagine you looking around and finding transformers and PCBs left over... "oops, forgot that one"...
Speaking of transformers....
My 67SE has had a terrible mechanical buzz from its transformer for as long as I've had it. I tried a few things, like decoupling it from the chassis with rubber grommets etc., which helped but it always bugged the hell out of me. Particularly those late-night listening sessions. My ear/brain was tuned to it because I knew it was there.
I have an old stock standard 63 (with non-SE transformer) which I listen to when my 67SE is undergoing surgery.... so I thought sod this, I'll swap 'em. The analogue stage (Zapfilter2) and clock (Tent XO2) have their own transformers anyway so I wasn't expecting a sound-quality penalty.
Sure enough, I didn't get one. Which is nice. AND NO MORE BUZZING! YEAAHH!!!
The standard TX has the bracket welded to the laminations (?) so they can't vibrate. The SE one does not. Looking at them it seems obvious why one is noisy and one isn't.
The standard TX runs a little hotter, though I may be imagining that.
LOL im a professional I don't forget anything Honest.
I am suprised you can hear no difference between the two tx. The SE one has a larger VA (which will be why the standard one will get hotter). Best thing to do is fill the gaps in the tx with hot glue. I have had a 100% success rate doing this.
Brent
adyf said:
I'd not buy it from there. More than one has been faulty. Mine will be going back (power was adjusted high AND it would intermittently read the TOC on "Jazz at the Pawn Shop").
They're happily going to send another or refund. So I'll have to sell the replacement now as I got another from elsewhere
Also, changing just the laser is a nightmare job.
Re: transport cdr whine
Brent's advice sounds good - sounds like a vibration/resonance issue.
I've had similar problems, but they can happen anywhere on the disc. I've replaced the laser a few times but the new ones are sh!te and always crap out on me after a few months (if they work at all). I've gone back (again!) the the original one in mine which occasionally has an issue with CDRs. It always plays fine once it starts (and I've still yet to ever hear it skip, which amazes me) it's just that on some CDRs when you skip from track to track you get a radial error. You try again and it works 2nd time (or 3rd at most).
I thought I'd found its sweet spot when adjusting it, but my 'Greatest Hits of OMD' CD (not CDR) killed that delusion... so I put it back to how it was.
Interestingly though, ONLY on ones burnt with a Yamaha CDRW drive. I had no such trouble once I switched to DVDRW drives. (First NEC, now Plextor.) The media was the same throughout, namely Japanese Plextor-branded Taiyo Yuden discs.
adyf said:
Brent's advice sounds good - sounds like a vibration/resonance issue.
I've had similar problems, but they can happen anywhere on the disc. I've replaced the laser a few times but the new ones are sh!te and always crap out on me after a few months (if they work at all). I've gone back (again!) the the original one in mine which occasionally has an issue with CDRs. It always plays fine once it starts (and I've still yet to ever hear it skip, which amazes me) it's just that on some CDRs when you skip from track to track you get a radial error. You try again and it works 2nd time (or 3rd at most).
I thought I'd found its sweet spot when adjusting it, but my 'Greatest Hits of OMD' CD (not CDR) killed that delusion... so I put it back to how it was.
Interestingly though, ONLY on ones burnt with a Yamaha CDRW drive. I had no such trouble once I switched to DVDRW drives. (First NEC, now Plextor.) The media was the same throughout, namely Japanese Plextor-branded Taiyo Yuden discs.
rowemeister said:
I think it's because it's only supplying servo, decoder, CPU.
Everything's well regulated now too.
I think the analogue section benefits the most from a beefier TX and the Zapfilter has its own toroid.
Maybe the vibration of the SE was actually having a detrimental effect too. I thought it actually sounded better with the standard one to be honest, but have convinced myself I was imagining it.
Considering the exemplary sound of the FET/solid state output stage, I've no idea why anyone would feel the need to add unreliability and something fragile into their player.
Lee, does your friend read too many hi-fi comics? If his sound needs "sweetening up" I'd imagine it's better to do it with good component choice and speaker tweaking.
Just my 2p and I mean no offence.
Simon
Lee, does your friend read too many hi-fi comics? If his sound needs "sweetening up" I'd imagine it's better to do it with good component choice and speaker tweaking.
Just my 2p and I mean no offence.
Simon
OT...
Internals of new CD6002 found on net...
Internals of new CD6002 found on net...
An externally hosted image should be here but it was not working when we last tested it.
cdr whining cured!
great - just stuck a 10p piece with blu tac on the CD clamp and it works beautifully!
thanks - this would probably be a good mod for most people i'd imagine - no more whining and it plays my cdr's perfectly..
only problem now is when I did the muting transistor mod - i took out R659, 660 instead of c659, 660!! doh - no output - just on the start of my learning curve!
thanks again
adrian
great - just stuck a 10p piece with blu tac on the CD clamp and it works beautifully!
thanks - this would probably be a good mod for most people i'd imagine - no more whining and it plays my cdr's perfectly..
only problem now is when I did the muting transistor mod - i took out R659, 660 instead of c659, 660!! doh - no output - just on the start of my learning curve!
thanks again
adrian
Anyone here prefer silvered-mica filter caps to polystyrenes?
If so, which ones?
I think I've seen them in someone's CD63/67 (Maybe Ray or Brent).
I need de-emphasis caps (560pf) for a tuner.
Either the LCR polystyrenes ones or Cornell Dubilier silver mica is all Farnell have in that value.
Cheers,
Glenn
If so, which ones?
I think I've seen them in someone's CD63/67 (Maybe Ray or Brent).
I need de-emphasis caps (560pf) for a tuner.
Either the LCR polystyrenes ones or Cornell Dubilier silver mica is all Farnell have in that value.
Cheers,
Glenn
SimontY said:
That's more or less the reason I took the solid state route. Tubes are NOT fragile BTW (ever tried overloading a BC550 with 400V without any damage??
but you need an extra HV and heater supply. A bit too complicated at that time to fit into the player without too much trouble. After several listening tests I came to the conclusion that the outputstage sounded great in both cases, whether it was built with tubes or FETs, so solid state it was...Is that the el-cheapo KSS laserunit again??
Must be the Denon-influence, no more 'European' parts. 'DSD and pitch control' ?? Yuk!!
Ray
