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Mini Dac TDA1543 X 4 NOS - Page 50

post #736 of 947

^ nice!  how did the sound change - do you have specifications of the small blue ones?

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post #737 of 947

Now it sounds more spacious, wider and deeper in sound stage, a lot more micro-dynamics,bass is  more punchy and faster than in original

 

These small Philips are

 

PP FILM FOILS CAPACITORS
KP AX EPOXY LACQUARED
1000pF +/- 1% 400V

 

I forgot to write that I have original output caps - Green Nichicon Muse

post #738 of 947

Waluch, Tell something about Your power supply. It looks awsome !!! How Muse sound equiped with that ?

post #739 of 947

Hi wiiman, sound with new power supply became more coherent, separation  between every instrument is better, bass is little deeper now. Moreover MUSE is now less warmer than before (with original crappy PSU)

PSU also include ON/OFF switch, it is very comfortable to use now,  because MUDE DAC haven`t got any.

 

 

post #740 of 947

where can i order a psu like yours, waluch? I cant even seem to find the product on their website ;/

post #741 of 947

Mine PSU was first prototype unit, built for me. For a two weeks PSUs will be in normal distribution.

I think you could write them an e-mail to order your unit and talk about details. 

post #742 of 947

may i ask how much it cost you?

post #743 of 947

I wrote you PM

 

 

post #744 of 947

i'm going to have to give this dac a try.

 

i still remember my old modded lite ah for having a sweeter sound than dac 60 that it replaced. and to me this muse dac seem to have more potential than lite ah simply from being able to use an external power supply. 

 

expect some crazy things to come like russian oil cap bypass per 1543 and oversized everything else- when I mod I make it ugly! >:D

post #745 of 947

ok, n/m. I'm going to go with sapientiam's mods. :D

 

Sapientiam, please tell us how to do the absolute phase mod. Everything else seem like walk in the park compared to lifting the smd legs. 

 

 

Also do you think it's beneficial to go with +1000uf power supply caps? 

post #746 of 947
Greetings to everyone.
I recently purchased this DAC because of the potential for mods and low price. Mostly because of the low price.

I have checked the regulator for the DIR 9001and its the 3.3v one so we're good there. Mine is the one with the white PCB board. It sounds pretty good unmodded and the I rather like the slight top end roll off which I would describe as organic sounding.

I would like to first upgrade the resistors on the I/V stage. (the 3 resistors near the LEDs). Do I have to change all 3 of them of just the 2 680ohm ones?

Edit: I just realized that all the resistors on the analog side should be changed.

Has anybody had any experience with tantalum resistors?

(http://www.ebay.com/itm/350231356583?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649)

@curiousmuffin My stock DAC already has a 1000uF capacitor (the one near the DC jack) How about a 22,000uF? smily_headphones1.gif
Edited by dippy - 1/10/12 at 7:37am
post #747 of 947

wua nelly, dippy. now we're talking. so no adverse effect whatsoever from tagging on such huge caps? would my battery drain quicker should i decide to go lipo power? 

 

 

as for resistors, if you want to go all out (along with 22k uf cap :D ), caddock carbon film is the way to go. i don't know whether they'll need a cooling fan in this application but i do know that there's no substitute to it's sound. :) 

 

 

post #748 of 947
It is allways nice to see ppl getting started on modding. But do you actually know what you are doing? I mean, snubbering a 10uF electrolite with a 1nF MKP is hardly worth the effort. That is 1:10,000. The 0,5uF PiO is way more effective and better. That accounts for 99.5% of the effect you hear.

But WTF? That size for a 0.5uF? I know about the expression "thinking outside the box" but using those huge caps in a sigarettebox size enclosure is hardly what that expression is normally used for. confused_face_2.gif

Why don you start reading this thread from page 16 or so to get to the real worthwhile mods. Remember: the best sounding cap is no cap. Go with Proids mods and you will hear a real worthwhile improvement. All you need between the 1543 output leg and the RCA plug is a 200Ohm resistor between signal and ground. No caps needed whatsoever.

About the powersupply. I have trouble believing your description of the improvements. I tried it with a Teradak PS and I heard no improvement whatsoever. Sorry. If you want to try what it sounds like with the cleanest possible power why not try 6 batteries? The PS you showed looks the works. I am really curious where you got it and what it costs. Why keep it a secret? It's not like someone will buy the whole 10 year supply or something... I have a sneaking suspicion all the effort and money is hardly worth the effort.


Since when is a severe unintentional high roll-off a good thing? Why throw away information?
Quote:
I would like to first upgrade the resistors on the I/V stage. (the 3 resistors near the LEDs). Do I have to change all 3 of them of just the 2 680ohm ones?
You don't. Just add a 4k over R01 and V goes from 7.63 to 7V. Or replace it for 450Ohm. Or bridge 1.5k or replace w/ 400Ohm for 6V.
Edited by ]eep - 1/11/12 at 3:30pm
post #749 of 947

hehe even teralink users don't report much of any improvement with that powersupply, jeep.

 

 

 

 


Edited by curiousmuffin - 1/11/12 at 3:49pm
post #750 of 947
Quote:
Originally Posted by curiousmuffin View Post

ok, n/m. I'm going to go with sapientiam's mods. :D

 

Sapientiam, please tell us how to do the absolute phase mod. Everything else seem like walk in the park compared to lifting the smd legs. 

 

 

Also do you think it's beneficial to go with +1000uf power supply caps? 



The absolute phase mod is done by reusing a gate in the HC00 which got freed up when I deleted the optical input. If you don't want to do any leg-lifting on SO packages, you can just add another inverter device - perhaps a pico-gate would to it. Lifting legs though is easy - just a sharp scalpel point and soldering iron does the trick. As to your power supply question, I doubt its any benefit.

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