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Old 11th August 2013, 07:56 PM   #2891
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Default 9002

I picked up a 9002 ps1 today just interested in the difference between the 1002 model any help , only 50p works too.
thx guys alan
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Old 11th August 2013, 08:52 PM   #2892
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Quote:
Originally Posted by chainik View Post
I never heard the PS as CD before and after mod, but i don't understand why so many diy-rs made the mod for PS. Why? The DAC from AK so good? .. or digital processing better then in CD? mayby pick-up able to read without failure every bit? What outstanding with this PS ? ...anybody can give me answers on this question?
Thanks.
The PS1 can sound quite good (but not necessary great).
My "most heavily modified" PS1001 can rival my modified Sony X555ES, but mods on that PS1 are rather involved: external linear power supply for 3.6V/7.6V, battery power for analog section of dac chip, external DC blocking capacitor box with FT3 Teflon caps. The sonic result is rather satisfactory.

My take on using the PS1 as CD player:
-it is a well-built, well-designed and reliable player.
-Base cost is low. $10~$30. Maybe $50 for a mint mint condition unit.
-Parts are widely available. Actually, it is easier to just buy another one and take parts out of it.
-Easy to work on. Open the case and everything is right there, modifications can be done easily.
-Easy to add a remote.
-- the final sound quality can be good enough for daily listening.

At a certain point any CD player will start to have laser problems. With the PS1 it is easy to solve, just drop in another transport and maybe adjust the trim pots a little, very simple operations. The same can not be said about my reference player, the Sony X555ES, replacement laser is impossible to find now, once it craps out I will be out of luck.

Last edited by audiocats; 11th August 2013 at 09:05 PM.
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Old 11th August 2013, 09:57 PM   #2893
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Hi Audiocats!

How did you do this "power for analog section of dac chip" and what DAC chip voltage are we talking here?

Thank you m8!
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Old 12th August 2013, 02:34 AM   #2894
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analog power on the board goes through L401 (right side of Dac chip, marked "100") and a 10 ohm resistor below C406, marked "100") before reaching the DAC chip. Removing these two parts will separate the chip's analog V+ pin from the board. You can then add your battery power + to the top pad of L401. Four rechargeable batteries will give 4.8~5.3V, within the voltage requirement for the DAC chip.

Try it, and I am sure you will like it.
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Old 16th August 2013, 07:59 PM   #2895
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removed the muting transistors did all mods as per mick(dogbreath) advised very nice audio.
well impressed,Next step yo move psu.
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Old 16th August 2013, 10:10 PM   #2896
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Quote:
Originally Posted by audiocats View Post
analog power on the board goes through L401 (right side of Dac chip, marked "100") and a 10 ohm resistor below C406, marked "100") before reaching the DAC chip. Removing these two parts will separate the chip's analog V+ pin from the board. You can then add your battery power + to the top pad of L401. Four rechargeable batteries will give 4.8~5.3V, within the voltage requirement for the DAC chip.

Try it, and I am sure you will like it.
Hi Audiocats!
Have you ever tried somehow to raise the output voltage to be more than 2.3 Veff.
Some say the sound get even better that way?!
Thank you.
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Old 28th August 2013, 04:04 PM   #2897
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Originally Posted by m4rk1z View Post
Hi Audiocats!
Have you ever tried somehow to raise the output voltage to be more than 2.3 Veff.
Some say the sound get even better that way?!
Thank you.
Have you ever heard of clipping? Lateley i went back to 2volts output, which should be cd player standard.

I use a fully modded playstation scph 1000 with external psu and massive over 20.000uF, burr brown op amp 2134 and dc/dcconverter5/15v.

The sound is absolutly clear and the orchester seems to play in the room. Really clear and also smooth.

it doesen't cost a fortune to build this jewel
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Last edited by Pg2005; 28th August 2013 at 04:15 PM.
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Old 28th August 2013, 07:45 PM   #2898
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Hi pg2005!

I just wanted to hear other members with more than 2,x Veff how they like it!

Yes i know what clipping is and i m atm at 4,0 Veff

External power supply for 7,6v 3,6v & 15v (also 18v for my burson discrete HD opamp's) and with more than 100k uF etc etc...
and "the orchestral seems to play in the room" you can not achieve even with high end stuff but ps1 has indeed great potential.
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Last edited by m4rk1z; 28th August 2013 at 08:12 PM.
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Old 2nd September 2013, 09:49 AM   #2899
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I have a PS-3. I have used it as a cd transport and it is not bad. You can use it via the optical out or by using the plug in converter that comes with it. I think that by using the converter you use the internal dac in the unit and that would allow you to listen to sa-cd. But...all of the above needs to be controlled through the video screen for the settings. Also...the unit has a pretty loud fan.
I have also used the HDMI out for cd but you are then playing the cd through your amp that accepts HDMI.I like using the stereo converter and the internal sony dac.
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Old 15th September 2013, 01:51 PM   #2900
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I have modified and sold hundreds of PS-1, mostly 5501 as they are much better than 1001. While the sound quality is good the PS-1 is still crappy piece of plastic that will not last a year of constant use. Laser assembly is the worst I've seen.
CD format is dead as is most of physical disc based formats - save your money for decent external HDD or server and DAC, put all your music in FLAC format and start enjoying high resolution audio.
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