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PostPosted: 19 Jul 2008, 12:51 
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I am not sure yet about all the changes, but I am sure about removing the 6 caps and replacing with wire and undoing the mute circuit. These are easy and I will have a hard time screwing them up. I might do a linear power supply. Thats easy to. Only 17W that this thing uses and I bet I could even get a power supply on ebay for a few dollars and not have to build anything. There are some other options that might be good to do, like modifying the audio output stage. I think I will reserve judgement on that one until I open it up and see how tiny things really are. Even though it was only $20 I still dont want to destroy it. I would like to give it a nice case some day.
What do you guys think?
Ri

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PostPosted: 20 Jul 2008, 10:36 
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Those mods seem simple enough. I would start with the power supply. Open it up and take a look at the caps. That will give you a better idea on how manageable it will be to remove the mute circuity and caps.

Cheers

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PostPosted: 21 Jul 2008, 21:20 
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Guys. I think there are greater riches to be had chasing early valve CD players. But in the spirit of the game I will join in. That is the chase of a SCPH-1001 or 1002? My loan shop has dozens of PS1s - easy to find a 1001 or 1002 (more likely for Oz). But 'cause I'm feel'n lazy I hit the Oz eBay and put it on the would be million heirs selling the only toy they have ever had in their PS1s to e-mail me the model number. If I get a hit I'll let you know.

funny you mention early valve CD players, does any forum rider own one. If so which and how old and how does it sound?

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PostPosted: 22 Jul 2008, 07:10 
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Valve CD players?! Never heard of it. Thats a cool idea, but couldnt you get the same result using your 12AX7 pre?
Ri

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PostPosted: 22 Jul 2008, 07:24 
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I heard a tubed CD player several years ago and it was nice. I cannot remember the brand. Shanling CDP seem popular.

What I want to try next is an external DAC and then like Ri says, you could feed it into whatever preamp you like.

Cheers

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PostPosted: 29 Aug 2008, 18:36 
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I have been checking out the local pawn shops and have found 7XXX units for about $AU45. Not interested in any but the 1002 (Australia) at about $25. Should find one if I keep looking.

There has been some genuine 1002s on eBay but hey got to expensive.

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PostPosted: 29 Aug 2008, 18:45 
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Do you guys have anything like Craigslist?
And, if you dont you should start one and make millions.
Anyway, if you have a huge classifieds you might post a wanted add. Thats how I got mine.
Ri

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PostPosted: 30 Aug 2008, 20:16 
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gmilitano wrote:
Hi Ri,

Yeah, you can't go wrong at the price. A decent used CDP is going to set you back close to $200.

Were you going to try any of the mods?


I have forgotten the guy's name but he put up a page on minimalist chip maps, which led me to the Synergy design. He used a PS1 as a CD player but was not happy wit its performance. He changed the way the PS1 mech.seats. He used cheap cones/spikes. He claimed the plastic case and flimsy mech. mounts were adding to the poor CD performance of the player and by better stabilizing the transport he improved the sound. Add to this the early models with the better DACs you may have a reasonable player.

I also understand that PS is crappy in the players and AC gets into the signal. Stereophile found this. So maybe there is room for improvement here.

Yes I may attempt to improve the players performance.

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PostPosted: 31 Aug 2008, 10:30 
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Hi Mark,

I think you mean this site: http://dogbreath.de/PS1/index.html

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PostPosted: 31 Aug 2008, 11:43 
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I know there are tweaks. Right now it sounds so good that I am focusing on other things. Thats a back burner project for sure. The power supply and lifting those caps are my first projects for the PS1. Cuz they are easy, most likely, and cheap. I dont know how much I go for the notion of vibration of the chassis interfering with the sound, but I am here to learn so I suppose trying something like that is not out of the question for me.
Ri

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