標題: which capacitor can change to improve the sound? [打印本頁] 作者: dogman89 時間: 2008-3-24 22:45 標題: which capacitor can change to improve the sound? which capacitor can change to improve the sound?
my 合併式膽機 contain 2 x EL34, 2 X 6sn7 , Now i want to change 4 capacitor. which band is suitable ? After change , the sound become better[img][/img]
[img][/img]作者: impressj 時間: 2008-3-25 10:48
u seen to be using imagx AMP, well ! i have change M-cap silver for amp, the sound is great also the price is resonable !
u can read the follow topic to get idea ! now i have using Full V-cap for building matisse !! maybe can help u !!作者: impressj 時間: 2008-3-25 10:49
sorry the web-site is follow !!
http://www.vhaudio.com/21capacitorshootout.pdf作者: accphoto 時間: 2008-3-25 12:55
I think for value of money, should try jensen copper foil caps, they are not too expensive but still maintain very good quality.作者: dogman89 時間: 2008-3-25 23:34
thank to jimmison1 & accphoto , i will study all information and try to modify my amp.作者: dogman89 時間: 2008-5-3 21:58
i have already changed the capacitor to m- cap which is m-cap silver/gold(0.47uf 1200V) , after this change , the sound becomes rich and solid but not enough (通透). i think that need boiling it.
i buy the m-cap silver/gold(0.47uf 1200V) in shamshuipo , the price is $1700 for 4, i feel "very painful in my wallet" ..............Now i want to ask every C HING that where to buy the parts is cheaper? thank s作者: accphoto 時間: 2008-5-3 23:09
DO you mean 0.22U , not 220Uf? 1700 for 4 is too expensive. Should go for Jensen copper fiol which should cost you about $2xx per piece.作者: dogman89 時間: 2008-5-4 18:32
Sorry , it is 0.47uf 1200v ,Jensen copper foil is $6xx per one, i chech it in shamshuipo (wing X), where u found the $200 of Jensen copper fiol, pls tell me. do u buy it though internet market...(e.g. http://store.tubedepot.com)作者: accphoto 時間: 2008-5-4 19:51
You do not really need 1200V, 0.47 630V copper foil, you can check sound explorer. No need at $ 600 definitely. This price is for 1U.作者: alfcat 時間: 2008-5-4 22:02
Yes, you should check out Sound Explorer (凱韻) at Yau Ma Tei. It is located at the 7/F of Hamilton Building (味千拉麵).
The price is good and if you visit regularly, they give you discounts as well. I got many of my stuffs there too.
Wing X at SSP is famous for HIGH PRICE. Even if you buy > $ 3K, they won't give you 5% discount!!
CAT作者: SSWONG 時間: 2008-5-5 11:28
if your cap at signal part and the voltage <300v, u may consider Vcap teflon 0.47/300v ~usd100/Pcs. I will say it is a better cap than jensen and the price different not so large...
recently just install some V cap OIMP for my friend in his 1SC clone speaker... fantastic...作者: alfcat 時間: 2008-5-5 17:11
I just changed some of the stuffs in my 1sc clone too ... but I am not that rich ... just swapped some Auricap in to replace the Chinese BENNIC.作者: accphoto 時間: 2008-5-5 22:31
Just check today, $ 285 per pc before discount for 0.47 630V.
[quote:fbe5585d8b="accphoto"]You do not really need 1200V, 0.47 630V copper foil, you can check sound explorer. No need at $ 600 definitely. This price is for 1U.[/quote]作者: SSWONG 時間: 2008-5-6 16:30
Cat,
if u r not planning to change the speaker then better change it to very good cap pieces by piece.
in 1st clone got 3.3, 4.7 & 5 (some use 6.8), the price to but auricap 3.3+4.7 shld be able to buy a 3.3 V cap oimp right?
My friend initially is using solen cap...now change to OIMP, a lot of diferences.作者: abelwoo 時間: 2008-5-8 14:20
how abt Obligato cap heard the sound not bad ... quite warm sounding but myself i prefer Mundorf silver oil
what i know Vcap sound dynamic
if got $$$$ can try for Audio Note copper foil作者: accphoto 時間: 2008-5-8 23:44
Forget about audio note la, they try to copy Jensen. The early type audio note is made by Jensen. They made the cap themsilves recently but I heard that it always blow away.作者: abelwoo 時間: 2008-5-9 00:03
wut i know Jensen is quite some time already oh early Audio Note also made byy Jensen ? ermm now i know thanks
wut i know even Dueland also from made by Jensen作者: alfcat 時間: 2008-5-9 10:44
Dear WINDWSS,
Glad to see you back. You seemed to be busy some time ago.
Well, I can't say for sure I won't change my speakers. And, I have to balance my budget with the performance.
For Amp / Pre-amp., I would prefer Jensen as they give good value for money. For not so critical ones, I will use Auricap.
I know VCap is good and so is Audio Note. They are out for reach for me, ha..ha..
CAT作者: SSWONG 時間: 2008-5-9 17:42
agree with accphoto, AN oil cap seems had that problem, not so reliable...
for the sound i feel it is better than mundoft silver oil...
if u can afford AN then just go a bit more for the V cap lah....
Dear Cat,
hehe u r right..i seems almost disappear after having my 1st kid last Nov...she is now 6months old..... within 6 months u had become expert leh.... had complete so many project.....
i didn't do much on DIY, only help friends to assembly a DAC, the 1541A look similar as sold in hififever but the power supply is better (consist of a lot philips cap)
recently start to DIY a AN M7 for friend.
Since you just assemble and sell then can use cost effective cap like auricap....if u got chance u must try listen to Vcap, for speaker Vcap OIMP will do (warm, very good bass, depth & musical)....
If u has the curiosity to know different preamp circuit, u shld has curiosity to try Vcap..ha..ha...作者: alfcat 時間: 2008-5-10 09:42
Dear WINDWSS,
It is always nice to have kids around. When she gets to around 2 years old, that is the most wonderful period. She will be walking around here and there, doing things you would never have imagined and talking and talking and talking .... ha..ha.
I am far from being an expert. Still knows only a little bit on electronics theory and alike. Still can't read schematics without trouble. I would say Accphoto is at least 10 times better than I am.
Well, cats are always curious. I will try VCap later on when I got more money. As I don't sell my projects for a profit, I need to save up .. ha..ha
Oh, you are working on an AN M7? That is good, tell me how you feel about it. I have thought of making one too; just this one and the Marantz 7. My colleague suggested me the Marantz 7, so I went ahead with it in the past.
Just hope that I can finish re-constructing the KT88 this weekend, then I can post some photos up here.
CAT作者: SSWONG 時間: 2008-5-15 15:40
Dear Cat,
My daughter sill can't walk already look at my soldering tools on the table, before she can walk i have to move all that to a small room to work : (
u r right accphoto is a helpful expert here... : )
i had actually made 1 AN7 (semi con diode rectifier) but use as tube buffer, since my friend like it so now made anotehr 1 using better component and with tube rectifier.....
It is not a warm sound pre amp ..... but i like it as it is easy & cheap to construct.作者: SSWONG 時間: 2008-5-15 15:45
accphoto,
For the power supply, the LCLC or crc filter what will be the differences if use more capacitor
CASE 1: 15H-47uF-15H-47uF
Case 2: 15H-47UF-15H-500UF
compare 1 & 2
any differences?作者: accphoto 時間: 2008-5-15 22:06
Unless you are using tube rectifier, then the first stage of the LCL should not be greater than 100U, otherwise , I normally using the same figure for the LCL filter. By change the UF certainly affect the sound. Normally , in High voltage situation, the capacitor should not be to great like 500U, it will slow down the sound I do not know what is your application but i normally use 47U in LCL filter in pre-amp operation. For power amp, I will using 100U in the LCL filter.作者: dogman89 時間: 2008-5-22 13:36
After boiling the amp , (通透) of the sond has a great improvement. nice ...
the 2nd diy project is power cord. i want to ask that what is the perfect lenght of power cord .....(4M,5M,6M)? different lenght has different effect?作者: accphoto 時間: 2008-5-22 14:19
Power cord 4-6 feet is ok, not too short.作者: dogman89 時間: 2008-6-8 11:24
請問原本電 容值 是0.47uf630v現在改為0.47uf1200v當中電流電阻有什麼改變,聽說這樣會影響音質?
thanks作者: accphoto 時間: 2008-6-8 14:21
No need to change any resistor but you need more time to run-in as capacitor with higher voltage need more time to run in. I suggest you to go back 630V.作者: dogman89 時間: 2008-6-8 22:55
i see
thanks作者: alpha2007 時間: 2008-7-6 18:42
WHY NOT TRY NOS OIL CAPACITY LIKE SPAGRUE OR HUNTS?作者: SSWONG 時間: 2008-7-8 10:56
Recently has change to use V cap teflon.... good cap but damn expensive...
The worse part is --> after using it seems like don't want to use otehr cap already..... strong poison
