Marantz CD63 & CD67 mods list - Page 154 - diyAudio
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Old 30th March 2006, 11:18 AM   #1531
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Quote:
Originally posted by philpoole


I think best thing to do is pick a reasonable one to do (i.e. upgrading the opamps with sockets so you can swap and experiment, or upgrading PSU caps) and take it from there.
I reckon you'll get hooked and want to take it further.
I've been modding mine, on and off, for over a year now, and I keep coming back to it.
Half the fun is working out what the next mod will be.
Look at Ray's and Brent's docs for inspiration (they're both somewhere in this thread).

Bang for buck mods. The cheapest ones (i.e. free) are probably removing the muting transistors, shorting the output caps, removing/bypassing the HDAM.
You can get a lot of mileage in other mods (many cost just a few pounds, some don't), and you shouldn't discount a decent clock. This can be pricey. However, there are different costs here. Mine's a Kwak Clock, and I built it myself for about 20-30.

Cheers,
Phil
Pretty much what you have said is spot on. The only thing I would say is don't do the HDAM bypass until a decent pair of op amps are fitted. Then you will really unleash the audio
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Old 30th March 2006, 11:50 AM   #1532
poynton is offline poynton  United Kingdom
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Default Transformer

Hi.

What news on the Super-Tx ??

I see new reader Griffymark is looking for one as well !

Andy
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Old 30th March 2006, 12:04 PM   #1533
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Default Re: Transformer

Quote:
Originally posted by poynton
Hi.

What news on the Super-Tx ??

I see new reader Griffymark is looking for one as well !

Andy
Funny you should ask.

I have a KI with duff (or should we say previous owner knackered it) TX.

With no news on custom TX I am going down this route for this player.

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File Type: jpg phase 1 of custom tx_small.jpg (57.1 KB, 434 views)
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Old 30th March 2006, 12:06 PM   #1534
poynton is offline poynton  United Kingdom
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Default Re: Re: Transformer

Quote:
Originally posted by rowemeister



With no news on custom TX I am going down this route for this player.


Outboard Tx - I like it !!!
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Old 30th March 2006, 12:10 PM   #1535
poynton is offline poynton  United Kingdom
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Default Re: Re: Transformer

Quote:
Originally posted by rowemeister


Funny you should ask.

I have a KI with duff (or should we say previous owner knackered it) TX.

With no news on custom TX I am going down this route for this player.


Seriously .. It does give more flexibility in power supply design.
Farnell do a Tx with 4 windings - multiple 5v supply?
The only 'problem' is the heater for the display.

Andy
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Old 30th March 2006, 12:27 PM   #1536
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Default Re: Re: Re: Transformer

Quote:
Originally posted by poynton



Seriously .. It does give more flexibility in power supply design.
Farnell do a Tx with 4 windings - multiple 5v supply?
The only 'problem' is the heater for the display.

Andy
Yes the heater supply is my only going concern. I will have a spare 12ac winding on the little TX and was planning on dropping the voltage through a potential divider

Brent
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Old 30th March 2006, 12:32 PM   #1537
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Brent,
I think those extra transformers in the box are a good idea.
You don't have many at the moment.
Have you thought much about your hifi rack? Not necessarilly for acoustic reasons, more to do with if it can take the strain?
You'll need one of those shelves they have in supermarkets for gluten free food soon

Looking good, and heavy.
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Old 30th March 2006, 12:37 PM   #1538
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Quote:
Originally posted by philpoole
Brent,
I think those extra transformers in the box are a good idea.
You don't have many at the moment.
Have you thought much about your hifi rack? Not necessarilly for acoustic reasons, more to do with if it can take the strain?
You'll need one of those shelves they have in supermarkets for gluten free food soon

Looking good, and heavy.
Those TX above are for another CDP.

And my player at home weighs 7.16Kg lol and the rack it fine lol

Brent
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Old 1st April 2006, 06:46 PM   #1539
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Default variable output

Does anyone use the variable out feature of the CD63 ?
Is there any way to configure it to start at the minium setting when you first power up the player, also is there any way of altering the range it operates over?...three "units" up from minimum is too loud for me!
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Old 1st April 2006, 08:53 PM   #1540
6h5c is offline 6h5c  Netherlands
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Default Re: variable output

Quote:
Originally posted by marct10
Does anyone use the variable out feature of the CD63 ?
Is there any way to configure it to start at the minium setting when you first power up the player, also is there any way of altering the range it operates over?...three "units" up from minimum is too loud for me!
Hi marct10,

I'm afraid it's not possible to preset the attenuator to a certain value. The attenuation is done in the DAC that is controlled by the microcontroller, it's a software thing. It's register is reset upon power-up.

But why do you have to set the output value so low? The signal/noise ratio is not very optimal if the output is soo low. Do you listen with headphones often, or do you have a (pre)amp with a (too) sensitive input? In the first case it is easy to change a few components so the output level becomes less.

Regards,

Ray.
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