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#1 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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I am making reserve of the title, as i intend to produce this thread that will use schematics with suggestions with parts replacement, allowing you to observe if really made some audible difference.
Quasi complementary and full complementary Electrolitic condensers in power supply...size, capacitance The bypass....the snubbers during audio reproduction The input capacitor The input impedance The Miller capacitor Stop resistors The mirrored circuit and the non mirrored The VAS with mirror or without it The unballanced and ballanced differential Also the audio cables sonics (have they?) Also that one amplifier stand over a sofa will sound different if you place it in the floor (ridiculous?...maybe not) Well...i would like to explore those things, as i have made many testings about. I will observe the interest if you enter the thread, the hits, the suggestions, the critics...and so on i will decide to dive deeply in the subject. Not to believe things because Mr. Belton...Mr Incredible....Mr.Blamefest...Mr.Heaven.....SAID... ..test them with your own ears.....spend some time that will result in knowledge to you...check if those things affect your years...or if those things are only for "scopers"....or things to be repeated by the "pirate's parrots" There' a lot of full ships....a lot of crazy things that can fill one big ship till the top (hehe) regards, Carlos |
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#2 |
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diyAudio Member
Join Date: Sep 2005
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I need a cheap and nasty 1mA constant current source, till I can get some fets tommorrow... any plans uncle Charlie?
it is for this http://www.headphoneamp.co.kr/bbs/zb...sijosae&no=217 |
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#3 |
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diyAudio Member
Join Date: Aug 2002
Location: Sofia
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Carlos
You probably should give some direction to this thread by sharing some of your own (extensive) listening experience. Judging from other similar threads we risk seeing more busters than myths. |
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#4 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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Because only doing it that people will believe.
There's a lot of Mythmasters....i am not and do not want to be that one. One experience is simple....remove you input condenser...the small value, because of input impedance...and now install a 220 uf electrolitic condenser in it's place....listen What is the conclusion...for sure it will be the same as mine. the problem is that people go believing and never try to test those things to conclude by themselves....this way, the land is good to rise Myths. Doing this in a single channel....and ask someone to work the ballance for you (not you...never do that...we love to fool ourselves!)..... install your speakers one over the other...or one aside the other.... one channel with the monster capacitor...other one with the adequated, calculated, reasonable capacitor....hehe...check your audition...and tell me if this image appeared in your mind when the ballance operator inform you the terrible, awfull true! hehe...life use to be splendid.... and our wife is not the most beautifull woman in this world...we are not so beautifull as we imagine...people do not perceive us so kind as we hope for. regards, Carlos |
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#5 |
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diyAudio Member
Join Date: Jun 2003
Location: Slovenia
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GainClone - input cap removed - much difference in sound - to better.
Regulated GC - mosfet regulated supply replaced with LM338 regulated supply - sounds better Hope this is what you are looking for. Regards |
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#6 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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The capacitor remotion result is something we are waiting for....but the Integrated regulator sounding better is a very interesting Myth you are confirming. That those LM use to sound better...hummmm...good that.... and confirm what a Croatian friend told me during comparison testings. regards, Carlos |
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#7 |
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diyAudio Member
Join Date: Jun 2003
Location: Slovenia
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The PS was first regulated with LM338 then with mosfets (IRF540 and IRF9540) and then changed back to LM338 regulators.
Low end was better with mosfet regulation, but mids and hights were somehow not clean and shouting. Regards |
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#8 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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some heat...them he jumped to LM and turn very happy....maybe the way he did the regulator....i do not know. regards, Carlos |
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#9 |
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diyAudio Member
Join Date: Jun 2003
Location: Slovenia
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Here is another one...my TDA1543 NOS DAC...
This power supply cap (usually 10uF to 100uF) everybody on this forum put ''as close as possible'' to TDA1543 +V (5)leg (how do you call it - decoupling cap?)... one day I just removed it and there was no loss in low end and mids and hights are now cleaner and more liquid. Regards |
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#10 |
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diyAudio Member
Join Date: Feb 2004
Location: Recife - Brasil Northeast
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was near the output colector as people use to say that will be good. Sound was more opened..more brigth without the electrolitic condenser. Life is beautifull...booom for those Myths...well...they may work under special conditions..hehe...very special conditions. regards, Carlos |
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