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Old 22nd June 2013, 01:31 PM   #2861
dnic77 is offline dnic77  United Kingdom
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Join Date: Jan 2010
Location: hartlepool
thanks for the reply. ive used it without the resistors with the same results, i have put a 0.1ohm resistor on the capacitor and it sounds a lot better. im using both models 1002 and 5502 with the same mods and there both making the distorted sound.
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Old 23rd June 2013, 01:01 PM   #2862
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Join Date: Aug 2012
Quote:
Originally Posted by dnic77 View Post
thanks for the reply. ive used it without the resistors with the same results, i have put a 0.1ohm resistor on the capacitor and it sounds a lot better. im using both models 1002 and 5502 with the same mods and there both making the distorted sound.
Can you send some detailed pictures? 0.1ohm???? What is that for?
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Old 25th June 2013, 11:28 AM   #2863
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Join Date: Jun 2012
Hi. I have problem with laser. The voltage is ok :

BIAS 1,70V DC
GAIN 1,80V DC

But... : http://www.youtube.com/watch?v=GG79m...ature=youtu.be

I have KSM440ACM
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Old 25th June 2013, 02:41 PM   #2864
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Join Date: Jun 2012
New link VIDEO00031] - YouTube
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Old 25th June 2013, 11:08 PM   #2865
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Join Date: Feb 2013
Hi!

I m new to this community and i wanted to share my modification with you as it sounds fantastic!

I m not using Mr. Manfred's output solution as i like to use the opamps, so
i tried the best opamps but i ended up using discrete dual's.

If you want to go that route them you must make an external power supply with +/- 12, 15, 18 or more voltage for the opamps only.
I m using big paper in oil and silver in oil capacitors before and after the opamps!
I hope this shematic will help someone

Click the image to open in full size.

I compared my PS1 with Meridian Karan Shanling AudioAlchemy Asus Xonar Phillips Unison and other dac/cd players and you can guess what sounded best to ME

Greetings from Serbia.

Last edited by m4rk1z; 25th June 2013 at 11:16 PM.
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Old 26th June 2013, 05:44 AM   #2866
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Join Date: Jun 2012
Laser works good. Here is my moded PSX



Click the image to open in full size. Click the image to open in full size.

And others photos PSX jako CD - strona 2 - DIY - Audiostereo.pl - strona 2
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Old 26th June 2013, 08:14 AM   #2867
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Join Date: Aug 2012
Quote:
Originally Posted by gavron04 View Post
Laser works good. Here is my moded PSX



Click the image to open in full size. Click the image to open in full size.

And others photos PSX jako CD - strona 2 - DIY - Audiostereo.pl - strona 2
very nice work !!!!

Is your laser working now?
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Old 26th June 2013, 05:30 PM   #2869
Asioc is offline Asioc  Portugal
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Join Date: Jun 2013
Ok, Now I can assure you that Mick's Mod is a GREAT MOD for my setup! Thanks Mick!

I've been using for years one 5502 with RCA females connected to the multiAV pins of the motherboard's back, and the sound was not bad for sure!

This month I got a second 5502 and it was time to do the final mod to the output stage, i've done some research and found that Mick's mod is simple (I like simple audio paths) and makes sense...

My amp is a Primaluna Prologue 2 with an input impedance of 65kOhm, and Mick's solution is giving me: 16,4kOhm Total impedance / 2,93Hz Cutoff frequency

I've used:
2x Wima 3,3uF 50v capacitors
2x 22kOhm 1% 600mW resistors
Solid copper wire twisted twin from cat5/6 cable (shielded wire gives sound coloration...)

Compared to my multiAV mod it's now evident that Mick's Mod is giving me some big improvements:
- a wider and well defined soundstage;
- better instruments separation;
- better dynamic
...

Click the image to open in full size.
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Old 10th July 2013, 08:34 AM   #2870
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Join Date: Dec 2011
Quote:
Originally Posted by danDman View Post
Hi,
I tried Mick's mod replacing the output stage. And now the music is all distorted in the high frequencies, no bass, and the volume is very low. I'm using 3.3 uF caps at 50V (Wifa. Same as Mick) and 22 Ohm resistors at 4W. Is the wattage on the resistors to high? In the step by step instructions by Mich, he doesn't show were to cut the third connection to the RCA. May it be that I've missed the third cut? Does someone know were that might be? Please help.
I think you should use 22K Ohm, not the 22 Ohm.
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