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Old 16th October 2008, 08:58 AM   #11021
SimontY is offline SimontY  United Kingdom
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I agree, it's just about audible. Bypassing the output capacitors will make a MUCH bigger difference.

Don't remove the HDAM until you've installed a new master clock and op-amps, or it will only sound thin, harsh and muddled - the true nature of this player before serious upgrades.

Simon
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Old 17th October 2008, 06:36 PM   #11022
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Quote:
Originally posted by sherphing
hi guy... i read the previous post regarding the skipping read error can fix by adjusting the Variable resistor near the laser head there...is it really help? where it located?

Quote:
Originally posted by rowemeister
Usually adjusting this variable resistor will kill the laser or allow it to work but it will have a short life.

Brent

If you adjust the laser as told from service manual everything is OK.
I have noticed though, when you tweak a lot (other bigger lyths and so on), you are forced to adjust it.
Been there done that

My player skipped alot after all tweaks. Adjusting laser and focus .... everything is fine now (Marantz CD 65II)
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Old 17th October 2008, 07:46 PM   #11023
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by Radioman62






If you adjust the laser as told from service manual everything is OK.
I have noticed though, when you tweak a lot (other bigger lyths and so on), you are forced to adjust it.
Been there done that

My player skipped alot after all tweaks. Adjusting laser and focus .... everything is fine now (Marantz CD 65II)

The CDM12.x is a completely different animal to the CDM4.x


Andy
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Old 18th October 2008, 08:46 AM   #11024
L700 is offline L700  Malaysia
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recently just bought CD63 just for USD100 with new VAM1202 lens

i just do some minor mod the mod its correct got anythings need to touch up hehehe

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Old 18th October 2008, 12:51 PM   #11025
RCruz is offline RCruz  Switzerland
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Quote:
Originally posted by L700

i just do some minor mod the mod its correct got anythings need to touch up hehehe

Cool


What do you mean ?
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Old 18th October 2008, 02:50 PM   #11026
padman is offline padman  United Kingdom
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hello people

I have just aquired a marantz cd67 mk11

I have limited funds and even less experience with electronics

im looking to improve the above cd player, i read the threads, and get lets say a little lost!

Any1 willing to supply info on mods that are simple enough for a real novice ie never taken anything electrical apart or weilded a soldering iron!!

1st what iron to buy? what solder to use? where to buy componants? what mods really work? etc etc

I was thinking my 1st attack would be chassis dampening iec socket/cable and isolation platform but where to go from there?

any replies would be welcome thanks all ian



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Old 18th October 2008, 02:50 PM   #11027
hotiron is offline hotiron  Scotland
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Default Re: Re: DOS Mighty DOS

[QUOTE]Originally posted by 6h5c
[B]

Cool huh!

The story that parts need breaking-in is confirmed again.

A similar circuit for a phono stage is a whole different ballgame. Signal levels are very small (noise!), and RIAA correction must be implemented of course. There are good discrete designs floating around, a search will probably produce some threads


Have a wee look here I built this years ago and it sounds FAB.

http://www.soton.ac.uk/~apm3/diyaudio/JLH_phono.html
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Old 18th October 2008, 04:03 PM   #11028
hotiron is offline hotiron  Scotland
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[QUOTE]Originally posted by padman

1st what iron to buy? what solder to use? where to buy componants? what mods really work? etc etc

I was thinking my 1st attack would be chassis dampening iec socket/cable and isolation platform but where to go from there?

any replies would be welcome thanks all ian


The antex xs25 is a good quality all round iron Silicon cable recommended available here

http://www.rapidonline.com/productin...moduleno=73126

And this is quality solder

http://www.rapidonline.com/productin...moduleno=30236

Find an old circuit board to practice on or you will likely render your Marantz useless
Good luck!!!!!
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Old 18th October 2008, 09:15 PM   #11029
padman is offline padman  United Kingdom
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lol thanks hotiron im now briming with confidence lol!!

seriously im only thinking of a few tweaks open up the sound a little and tighten up the bass.

good idea on the practise board got a non working sky box to play with. ian
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Old 18th October 2008, 09:24 PM   #11030
RCruz is offline RCruz  Switzerland
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Default Re: Re: Re: DOS Mighty DOS

[QUOTE]Originally posted by hotiron
[B]
Quote:
Originally posted by 6h5c


Cool huh!

The story that parts need breaking-in is confirmed again.


Hi

It seems that film caps take even longer to break in period than the BG caps.

Sound is now becoming really impressive.

Sounstage is becoming aparent, bass is awesome, dynamics can now compete with my humble RD80 TT.....

In a word... I am now a digital "believer"

A little out of this thread but worth reporting:

Some time ago, I read something about isolating mains from my pre and power amp.

Today I implemented a dedicated mains outlet (with a sturdy switch and some 10nF caps) in my Meridian 101 / 103 setup.

Now I have a second switch to turn the system on.. (My wife did agree... ).. and a 2.5mm2 supra cable from there to the mains.

The pre switch only controls the pre itself right now... so both are isolated from each other.

I was expecting some improvements but I was not ready for this.... Much more headroom... lower distortion... and much better dynamics.

Regards

Ricardo
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