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opa 627bp in MHZS cd33

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 樓主| viewer 發表於 2006-10-26 19:16:32 | 顯示全部樓層
Hi windwss,


opa 2604 is better that 5532 (JRC) (Japan radio company) very much.

opa 2604 all ranges are better. sound like tube.

price 2604 is HK$25 to HK$30 second hand
        5532 is HK$5 brand new.

thanks for sharing.
SSWONG 發表於 2006-10-27 09:44:16 | 顯示全部樓層
[quote:0f5c2e1cb4="viewer"]Hi windwss,

I have used SCR Solen and  ERO MKP 1845
SCR solen quit balance.
ERO MKP 1845 bass ,high notes are little  clear than solen SCR
old solen don't use.
ERO MKP 1845 have green and blue colour. Blue is better than green on high notes (smooth)
Your present CDP is using SCR SOLEN or SOLEN ???????
I thing the solen caps in your cpd not real good.


Thanks,[/quote]

Hi viewer, as superwhite said my cdp is still original not change any component yet pls refer the pic HD21 which i attached and not the HD 22 attach by superwhite.

the original component at my HD21 is as below:
1) power coupling cap -- 220nJ/630V (ceramic cap??)
2) power filter cap?? WIMA MKP 10, 0.1uF,1000-600~
3) tube coupling cap --> EVOX 2u2J,400
4) single cap beside the tube is SOLEN MKP-FC 0.1uF/250V
6)OPA --->5532D JRC 5014c (but on the circuit board it written as OPA2604AP)
7) most of other E-cap is rubycon

So what the recommendation?

Superwhite,
u r order the opa from HK right? it the supplier have 2nd hand OPA 2604?


Thank you!
 樓主| viewer 發表於 2006-10-27 12:48:39 | 顯示全部樓層
hi windwss,

You say have noise when you on th cdp, it may the the problem on black colour Boxs which close to RCA outop. it may fixed not well or burn.

upgrade may replace all flim caps to ERO MKP 1845 claer sound and lower costs. result quit good.
if no costs problem you may replace m-cap (Supreme silive iol), muiltcap (RTX), jensen (copper foil) and Muscia cap. subject your tasts.
costs around HK$600 to HK$1000.

opa can changed to 2604, lt1057, opa2134, opa 2111, ad827, dy2000 pastic package
cost around between HK$25 to HK$100 each.

thanks.
SSWONG 發表於 2006-10-27 13:38:19 | 顯示全部樓層
Thank you viewer!!

i think i will try for ERO, low cost high gain... : )
superwhite 發表於 2006-10-27 14:17:13 | 顯示全部樓層
Hi viewer,

just need to know any different on the Vishay ROE MKP1845 n ERO MKP1845 is this two cap share the same technology? if for ERO i think can't get, only have VISHAY ROE MKP1845

Thanks!
 樓主| viewer 發表於 2006-10-27 15:00:45 | 顯示全部樓層
Hi superwhite,
Vishay ROE MKP1845 n ERO MKP 1845 are the same technology.
ROE famous on ecap.
ERO famous on film cap. (GREEN COLOUR and BULE COLOUR)

What colour and style on ROR film cap (box style) ???????
reference web site :
http://www.tubefan.com.tw/capacitor-2.htm.


thanks.
 樓主| viewer 發表於 2006-10-27 15:03:28 | 顯示全部樓層
Hi superwhite,
reference web site.

http://tubefan.com.tw
SSWONG 發表於 2006-10-27 16:10:04 | 顯示全部樓層
HI,

Need advice from u both.

If i got WIMA MP3-X2, 0.22uF, 275VAC but the VDC not mentioned even they test on >2000VDC for 2 sec.

Can i use it to replace my 0.22uF,630V power coupling cap?

understand thant WIMA MP3-X2 seems higher grade than MPK-10.

Besides, can i replace the WIMA MKP-10, 0.1uF,1000-600~ to WIMA MP3-X2, 0.1uF, 250VAC?
 樓主| viewer 發表於 2006-10-27 16:28:54 | 顯示全部樓層
hi windwss,

Is this cap:

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 樓主| viewer 發表於 2006-10-27 16:30:44 | 顯示全部樓層
Hi windwss,

what is you country's votalge????
if 110v no problem.
if 230v, i suggect at least 400v will be safe.


thanks.
SSWONG 發表於 2006-10-27 17:51:14 | 顯示全部樓層
yes, it is on your phto but is 275V not the 250V.

my country use 230V...oh..too bad... if i still want to use it what's the worse case? cap burn only or will affect otehr parts?

if this cap better than MKP 10?

I had attach 2 photo.
1) shall i replace those gray resistor?

2) photo 2 is the cap i have in hand at the moment, which but i'm not sure it sure suit to be use in which area?
a)ROE 470uF,40v
b) Philips 47uF,250V
c)shizuki 0.47uF +-10% 200v
d)EFD PR3, 0.1UF +-10% 630V
E) NIPPON CHEMI CON , mallory & some spprague cap

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superwhite 發表於 2006-10-27 17:53:08 | 顯示全部樓層
[quote:1014f1dc02="viewer"]Hi superwhite,
Vishay ROE MKP1845 n ERO MKP 1845 are the same technology.
ROE famous on ecap.
ERO famous on film cap. (GREEN COLOUR and BULE COLOUR)

What colour and style on ROR film cap (box style) ???????
reference web site :
http://www.tubefan.com.tw/capacitor-2.htm.


thanks.[/quote]

Hi viewer,

Sorry for Late reply. Great! the Vishay cap MKP1845 is AXIAL type, is a Matelized polypropylene film, but i dont know the colour.

Thanks! :wink:
superwhite 發表於 2006-10-27 17:57:12 | 顯示全部樓層
Hi WINDWSS,

i have change the resistor (ceramic resistor) to KIWAME Carbon 2W, sound great. it only RM5/pc

Thanks for sharing. :wink:
 樓主| viewer 發表於 2006-10-27 18:42:35 | 顯示全部樓層
hi windwss,

I suggest use at least over 20% of your country's voltage.
I agreed superwhite said his resistor (ceramic resistor) to KIWAME Carbon
2W is good and cheap.
Diy not = high costs. just what sound you want base on costs.
so many brand of caps. you can try each by each. just diy fun.


Thanks for sharing.
 樓主| viewer 發表於 2006-10-27 18:47:38 | 顯示全部樓層
Hi superwhite,

Vishay MKP 1845 cap have two styles (box and tank)
have green and blue, same of ERO MKP 1845 cap. beacuse ERO is belong Vishay BHC = philip compamy.


Thanks.
superwhite 發表於 2006-10-27 18:50:52 | 顯示全部樓層
Hi viewer,

Thanks for info,

do you know anything about TANTALUM ecap? is this suitable for hifi? how can no one is talking about this cap?
 樓主| viewer 發表於 2006-10-27 18:59:58 | 顯示全部樓層
hi superwhite,

I have no experience on TANTALUM ecap. so no comment on it, but i found that many expensive cdp use it.
I have one dac, it use some on ditigal part. I think it is suitable on digital part.

thanks.
superwhite 發表於 2006-10-27 19:03:08 | 顯示全部樓層
[quote:6600f80231="viewer"]hi superwhite,

I have no experience on TANTALUM ecap. so no comment on it, but i found that many expensive cdp use it.
I have one dac, it use some on ditigal part. I think it is suitable on digital part.

thanks.[/quote]

Hi viewer,

Thanks alot...... :wink:
superwhite 發表於 2006-10-27 22:40:28 | 顯示全部樓層
Hi viewer,

planing to change the all 100uf 16V rubycon cap, any suggestion?  Black Gate STD or Sanyo OS-CON SP series better?  :wink:



Thanks!
 樓主| viewer 發表於 2006-10-27 23:33:21 | 顯示全部樓層
Hi superwhite,

os-con is ok la !!!!!!!!!!!!!!!!!!!
Black gate very expenvise.
be-care the de-solding and solding.

Thanks.
superwhite 發表於 2006-10-28 00:27:52 | 顯示全部樓層
[quote:e64efd3d37="viewer"]Hi superwhite,

os-con is ok la !!!!!!!!!!!!!!!!!!!
Black gate very expenvise.
be-care the de-solding and solding.

Thanks.[/quote]

Hi viewer,

Thanks, after all, think will change all cap to BG, (see my budget) :

Will borrow my friend De-solering gun(Air vacuum) should be o.k, even my board i have change ALL my steel jumper wire to pure silver wire(0.3mm). :wink:

SSWONG 發表於 2006-10-30 10:05:56 | 顯示全部樓層
Hi viewer,

I got some doubt need your advice, pls refer teh picture attached. I'm also wondering why the manufacturer use the Elna Simiic ecap on this position. It is 100uF/50V. On the board it didn't write any value of uF shld be use, so can i change it to other type of cap (poplypropene & son on) with smaller uF, what your recomendation? I don't think we can get any polypropene cap with 100uF.

Besides, is LXF ecap better than rubycon?

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 樓主| viewer 發表於 2006-10-30 12:25:40 | 顯示全部樓層
Hi windwss,

I read it over, I think can replace flim cap to 10u/f with 0.1uf.
E.g ero MKT 10uf, ero MKT 0.1uf green colour. good sound lower costs. I used it in my cheap DAC china Lite DAC-AH Modificed. Very good sound for all range
      Plilip e-cap 100uf (blue colour) with 0.1uf flim cap (M-cap) good sound high costs. This recomment by expert in hk.
      SCR solen 10uf with wima black 0.1uf lower costs quit good sound or         0.1uf audio cap (very expenvise)  very good sound (golden )  This recomment by china expert and oversea.
Now it is used elna slim e-cap is ok la..... or  you can add 0.1uf flim cap for high notes.

becare and check the curisit first.

Thank you for sharing.
SSWONG 發表於 2006-10-30 13:55:27 | 顯示全部樓層
Viewer,

Than you for your valueable info.

So i can use the WIMA MP3-X2 0.1uF/250V paraller with the Elna right?
 樓主| viewer 發表於 2006-10-30 15:56:56 | 顯示全部樓層
hi windwss,
Some expert sd elna cannot parallel with Wima cap.
the sound will become to bright.
I also test it in my diy pockect amp,  that is correct, too bright, focus not good.

Thanks.
 樓主| viewer 發表於 2006-10-30 16:06:34 | 顯示全部樓層
Hi windwss,

If you want parallel with enla e-cap, try Multi-cap RTX, PPFXS serise,music cap cost around hk$750-100 each.

orERO, RIFA and SPRAGUE VITAMINQ flim cap both good.

I think modifity this part HK$200 is ok!!!!!!!!!  good sound result (resonable).


thanks for sharing.
 樓主| viewer 發表於 2006-10-30 16:16:03 | 顯示全部樓層
Hi windwss,

other cap you can try as:
1. Janzten MKP 0.1/uf just HK$12 each made by Denmark.
2. Taiwan UCC flim cap SPP type 0.1uf/630v just around HK$12.00 each,
    70%-80% = MultiCap. I also use it in my cheap DAC result is good.

can get the information from this web site:

http://www.jantzen-audio.com/
http://www.hifi-fitter.com

hope to help you and sharing.
thanks.
SSWONG 發表於 2006-10-31 11:55:24 | 顯示全部樓層
Viewver,

Thanks for info.

By the way, which position shall i place the cap parrallel? Pls refer picture, position A or B?

2) Can i use smaller than 0.1uF for e.g 0.022 or 0.047uF or larger such ass 0.22?

Below are some modification i'm going to do since most matrial is ready:

1) change power supply coupling cap to WIMA MP3-X2, 0.22uF/275VAC
2) Change 47uF/160V ecap on power board to Philips 47uF/250V (042T HP)
3) change 3 resistor on pwr borad (1k, 47R, 100R) to Kiwame

Beside, for 470uF/40v ecap i got the ERO (gold colour), mallory (black colour) and siemens GPF (B41010/B41293) so which 1 is better?

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 樓主| viewer 發表於 2006-11-1 15:46:07 | 顯示全部樓層
Hi windwss,

The 0.1/uf look like can fix on "marked B" but be sure the + - of silim e-cap at the back of PCB broad.

0.1/fu in my view is better than small uf. because in my experience, 0.01/uf
will made the sound not match very well.

Roe e-cap golden colour is sweet and warm sound suitable for tube cdp.
same as Ero you say.
mallory (black colour) more powerful good for bass.  siemens GPF  sweet and warm sound if made in china not good.  
So I will try Roe Golden colour.

Thanks
SSWONG 發表於 2006-11-1 17:24:09 | 顯示全部樓層
Viewer,

Thank you very much......

I will start some modification by thi thes week, wish me good luck and not burn the player....
superwhite 發表於 2006-11-1 21:06:33 | 顯示全部樓層
Hi

Just MOD my CDP on the ecap, change all the small value ecap to BG, but the 4700uf 16V n 25V have to wait, is too expansive
Will get the 4700uf BG next month

Some pic......Black Gate Cap


Black gate VS ELNA.... same value but Blackgate is BIG!



Will post some CDP pic (After MOD) this weekend :wink:
superwhite 發表於 2006-11-1 21:09:02 | 顯示全部樓層
Hi WINDWSS,

Happy MOD day for you this weekend, hope you enjoy the Mod process(before n after), remember to take photo. :wink:
 樓主| viewer 發表於 2006-11-1 22:43:39 | 顯示全部樓層
hi windwss and superwhite,

hop enjoy your modification.

Please send the mod photo for sharing.

Thanks.
SSWONG 發表於 2006-11-2 09:29:13 | 顯示全部樓層
hi viewer & superwhite,

I can't wait till weekend and i had done 1st stage of my mod on the cdp last night!!!! see the photo : )

luckily the soldering work is easier than i intially thought...and the solder superwhite bought me is much better & easier to solder....

so i had change t coupling cap, 3 resistor and a 47uF ecap.

The initial result i found at initial stage is:

1) the noise of the filter in between the power coupling cap disappear---? great!!! i like it....

2) the detail and resolution increase and cleaner especially for high & mid...
3) slightly sweeter (especially violin, guitar & vocal)
4) BUT....the speed is slower so i need to sacrify a bit of my lovely fast bass (anyway i think this can be improve by change tube la)

Overall i satisfy with the mod and start to addicted ... this time die liao lah!

Anyway i found that the 2 resistor (circle at the picture) heat up very fast and very hot especially the kiwame 1k resistor... so what do u both think? is it ok??

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superwhite 發表於 2006-11-2 11:54:38 | 顯示全部樓層
Hi WINDSS,

GREAT!   now you are started to MOD your CDP, good to hear your good result, i have no idea why the resistor heat up so fast, i dont have the problem(bcoz i change all 3 to kiwame.) :? better check it out.

For the sound speed slow i think is because of cap at the output coupling, bcoz i use Mundorf silver/oil, it fast... :wink: i dont think if you change tube the speed will be faster....

Just sharing. :wink:
superwhite 發表於 2006-11-2 12:10:55 | 顯示全部樓層
Hi WINDWSS

pls measure the old 1k resistor in mm, then we see what is the watt reading :wink:
 樓主| viewer 發表於 2006-11-2 13:31:38 | 顯示全部樓層
Hi windwss,

You say both resistors are very hot, this is show that the W of it will not matched. You can try 5w or  measure the resistor by meter.
That is important, because if it is over load, it will be burn.
becare.

Thanks
SSWONG 發表於 2006-11-2 13:42:11 | 顯示全部樓層
Hi, superwhite,

The original 1k resistor is ~ 2cm in length and 0.5cm diameter.
If u refer the previous picture it is the biggest resister at power board.
 樓主| viewer 發表於 2006-11-2 14:09:02 | 顯示全部樓層
Hi windwss,

If you want clear, you can take the old one to the diy shop to make enquiry.
If the value of the old resister and new resister also the same, it will be found that have some problem in you cdp (power supply).

Thanks for sharing.
SSWONG 發表於 2006-11-2 15:10:56 | 顯示全部樓層
Viewer & superwhite,

TQ for advise, tonight will use multimeter to measure the V accross this resistor and culculate the power....

:?
SSWONG 發表於 2006-11-2 16:19:36 | 顯示全部樓層
Hi,

have u both heard of cascade bypassing?

it mean use smaller cap on parallel. It use 3 cap.

Eg. main is 10uF, then 2nd is 1uF, 3rd is 0.1uF, it seems better.

If we refer the my circuit board, it seems have ready the space to do the cascade bypassing... any of u had try this?
superwhite 發表於 2006-11-2 17:01:14 | 顯示全部樓層
Hi WINDWSS,

i think you use the wrong resistor, you should use at least 3W n above, bcoz i also got 1 big resistor, when i measure is only 15mm X 5mm, are you sure is 20mm X 5mm? think your resistor have to change to bigger value :?
superwhite 發表於 2006-11-2 18:38:48 | 顯示全部樓層
Hi viewer n WINDWSS,

after second day of MOD the sound getting clear n solid, more to natural, is really musical cap, thanks viewer, if not you, i will not change to Black Gate.....       many many thanks to viewer :wink: . now i can hear something i cant hear last time.

viewer, you have any idea william sir carry the RIKEN RMG resistor? i want to get some, you know how much 1/2W /pc?

Thanks for sharing, JUST ENJOY THE MUSIC! :wink:
 樓主| viewer 發表於 2006-11-2 22:08:12 | 顯示全部樓層
Hi superwhite,

It dosen't matter. I enjoy to sharing to diy friends.
I have not  idea william sir carry the RIKEN RMG resistor or not but you can ask him. 1/2w in HK cost around $10 to $15 each.

Hi windwss,

I have try parallel some caps in outup like you say.
they will made the foucs of sound not good.
I really recomment that If you used famous cap e.g Jensen, Mitil cap, Music cap, Ero, audiocap, rel-cap etc. no need to parallel other small caps. (wast money no gain).
If you used solen (lower speed caps) just parallel 0.1uf is very great.

You can try for diy fun. and let me the result.
Thanks.
SSWONG 發表於 2006-11-3 11:12:12 | 顯示全部樓層
Hi,

Last night i measure the voltage cross both resistor it is small ~2-3V, by using fromula P=V square/R, the caculate watt is quite small.

Then replace back the resistor & cap 1 by 1 finally find out the original resistor also very hot.... the conclusion is that it is initially like that... my mistake is i never notice it early then put back all to the 1st modification.

Anyway since i replace each component n listen to it thus i know which component give what sound loh.

Observation say that:

1) solen original cap is powerful but stiff & harsh - philips cap sound sweeter, more elastic but slower.

2) only very slight diffencence between kiwame & original 1k resistor. Kiwabe very slightly clearer, original slightly blur.
 樓主| viewer 發表於 2006-11-3 15:56:02 | 顯示全部樓層
Hi superwhite,

Today i brought black agte non-polora caps (Red colour) king of black gate to replace the black gate stardand caps behind of the tube of MHZS CD33.

The result is improve much.
I strongly to recomment you to replace it.

Thanks.
superwhite 發表於 2006-11-3 16:28:01 | 顯示全部樓層
[quote:8f0c918617="viewer"]Hi superwhite,

Today i brought black agte non-polora caps (Red colour) king of black gate to replace the black gate stardand caps behind of the tube of MHZS CD33.

The result is improve much.
I strongly to recomment you to replace it.

Thanks.[/quote]

Hi viewer,

Thanks for info, actually i brougt the BG std already, can specify which sector have improvement? what value of the cap you replace, as i know N series dont have 10uf 100V  :?

next Mod will be the all big-big cap to BG..... :wink:

Thanks for sharing
 樓主| viewer 發表於 2006-11-3 17:10:20 | 顯示全部樓層
Hi superwhite,

10uf/50v is ok for it. No problem.

Thanks.
superwhite 發表於 2006-11-3 17:11:41 | 顯示全部樓層
Hi viewer ,

i tot this cap is about 100V? did you measure the voltage?

Thanks!
 樓主| viewer 發表於 2006-11-3 17:13:53 | 顯示全部樓層
Hi superwhite,

improve  in detail and 3d.
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