opa 627bp in MHZS cd33

Hi,

I have a question of my upgrade it for replacing of outup caps from SCR 0.22uf/630v to Jensen al oil cap 0.22uf/630v.
opa 2604 changed to opa 627bp. Result is very good.
But i found that the working voltage of IC is 28.9v so the 627bp is 18v  so it is quite hot. It played around 0ne hour, no problem was found just quit hot.

I also check the IC data of 627bp working max voltage is 18v.
Is it ok for that cd????????????????????????

be save now I change IC from opa2604 to opa2132 much impovement, it save, no heat found, because the max voltage of opa2132 is 35v.
opa2604 max voltage is 25v.

So suggest  member who have MHZS cd33 or cd66 to change the IC must becare.

Thank you for sharing.

放心啦, CD33, 2604換 627 x2 一定無問題. 長開都ok

hi viewer,

I will start to modifily My CD-33 later...
keep to share the experience
changed 5670 tube will got more surprised


I ready a pair auricap, JENSEN silver 單支線 (for main board to RCA 座).

thank you so much,
i have changed tube to GE5670w old stock (new) ,changed digtal outup from RCA to BNC style and also chenged solen cap to ERO MKP 1852 0.22uf/1000v blue colour.
finally changed outup wire.
the result is great.
Thank you for sharing.

Hi,

Just get this CD player, will like to change the tube first, anyone have try this WE396A before? Compare to GE5670 which one sound better?

Hi superwhite,

I have no expreience on tube 369A, but some  reports said  that is the best tube . But this is around HK$350 each.
GE5670 just $110 both. Thia is very good lor!!!!!!!!!
Can you give the feeling of  listen for 386a to me.

Thank you

[quote:d196e485f7="viewer"]Hi superwhite,

I have no expreience on tube 369A, but some  reports said  that is the best tube . But this is around HK$350 each.
GE5670 just $110 both. Thia is very good lor!!!!!!!!!
Can you give the feeling of  listen for 386a to me.

Thank you[/quote]

Hi Viewer

Thanks for reply,
i know that the WE396A tube cost a boom, but alot of HI-FI-er like this tube so much bcoz of the sound. i also try so many way to get this tube, but unfortunate cant get it until now :cry: , hope that i can get a pair n try....

i have found 1 more tube, the shop said is better than WE396A is ERICSSON 396A, made in sweden, price is lower than WE396A..... you heard about this tube? i dont know should try this or not..... :?

thanks for sharing

[quote:06c0a74f6a="viewer"]thank you so much,
i have changed tube to GE5670w old stock (new) ,changed digtal outup from RCA to BNC style and also chenged solen cap to ERO MKP 1852 0.22uf/1000v blue colour.
finally changed outup wire.
the result is great.
Thank you for sharing.[/quote]

Hi viewer,
i want to change my CAP too, what is ERO MKP 1852 cap? from what manufacture?

i heard of alot of review said change to silver/ oil or silver cap have more brighter sound but will softer the bass n midbass, so what should i change?
any CAP that can have all even sound?

hi superwhite,

The ERO cap is Germany company the quality same to EOR cap and wimma. It is better than wimma for high notes. (clear and smooth) I make this in power filter of MHZS  CD33 only. Sound outup changed Jensen alum Paper oil 0.22uf/630 these cheaper than copper much. then the mid bass is better. (I feel)
I also replaced the 4 rubycon caps before Elna to Nichcion (Muse) 4,700uf/25v Real product not china product (Green with bule cloue words.) buy it in 凱韻 (油麻地) HK$25 each.

Thanks

[quote:669df3d9e2="viewer"]hi superwhite,

The ERO cap is Germany company the quality same to EOR cap and wimma. It is better than wimma for high notes. (clear and smooth) I make this in power filter of MHZS  CD33 only. Sound outup changed Jensen alum Paper oil 0.22uf/630 these cheaper than copper much. then the mid bass is better. (I feel)
I also replaced the 4 rubycon caps before Elna to Nichcion (Muse) 4,700uf/25v Real product not china product (Green with bule cloue words.) buy it in 凱韻 (油麻地) HK$25 each.

Thanks[/quote]

Hi Viewer,

Thanks!

Hi Viewer,

do you know what is the function of the 0.33uf M-cap(white in colour)?

　　本人想更６N３胆，有沒有大哥可介紹GE,RCA,SYLVINIA,WE等牌子胆的音色？

[quote:3d3b69688e="sunnyhk"]　　本人想更６N３胆，有沒有大哥可介紹GE,RCA,SYLVINIA,WE等牌子胆的音色？[/quote]

if you got buget , go for WE396A, 1950s NOS, still need something BETTER than WE, look for BENDIX 6385(price around USD170-200) :  :
my 2cent

GE5670 n RCA5670 is better than 6N3 n also cheap, but the SYLVINIA i dont think have......... :wink:

Just get my ERICSSON 2C51/396A today. already plug in to my CD33, hope to have sweet sounding out :wink:




ERICSSON tube(Short) COMPARE TO 6N3 LongTube(original tube)


Just edited on 30-9-06

有無人知呢對好唔好，同埋值幾錢？ Thanks!

[quote:639b1210f0="ericko"]有無人知呢對好唔好，同埋值幾錢？ Thanks!

[/quote]


Hi, this tube look gorgeous :shock: ,if you cant find in hong kong, can go ebay n seach.

http://cgi.ebay.com/Sylvania-Gold-Pins-GB-5670-Western-Electric-396A-tube_W0QQitemZ5859895836QQcmdZViewItem

Superwhite,

What's the price of the ericsson 396A?

[quote:56d93eb550="WINDWSS"]Superwhite,

What's the price of the ericsson 396A?[/quote]

:  : about USD27/pc, real NOS tube,with OB box. made in SWEDEN :wink:

Ebay= Risk

God Bless you

Hi DUALXEON,

I totally agree with you, but there are some good seller in website......
I brough some WESTERN ELECTIRC 396A from ebay also......bcoz cheap.
:roll:  :roll:  :roll:

Hi to all CD33 owner,

I want to share something to you, i have change my power coupling cap to Mundorf ZN cap, n also the tube coupling cap to Mundorf Silver/oil. Pure silver cable 0.33mm from PCB to RCA. Ofcause the most important is change the tube, my is ERICSSON 396A.
I had try on WE396A also, but still prefer ERICSSON, because the VOCAL sound more TRUTH, not to said WE bad, it just that WE is too musical(is all depend on individual taste)

Now the Sound totally change, more clear, detail n fast,
Will change the OPAMP to 627 if the stock arrived, hope can give me another surprise! :wink:

Bring you CD to http://vocativeaudio.com/ Mr Chan will give you some more idea Mod and Listen/compare OP AMP

[quote:0998739db0="DUALXEON"]Bring you CD to http://vocativeaudio.com/ Mr Chan will give you some more idea Mod and Listen/compare OP AMP[/quote]

Many many thanks for DUALXEON advice on modification, unfortunated i cant come over to  http://vocativeaudio.com/. i'm actually from Malaysia......... :  :  :  :wink: Sorry.

I have upgrade my mhzs cd33 as follow photos.

[quote:5fe9148fe2="viewer"]I have upgrade my mhzs cd33 as follow photos.[/quote]

Great! any photo?

will try 1 more thing, BENDIX 6385 TUBE, received many good review on this tube, hope i'm not dissapointed with this tube. :wink:

At first i want to change my Tube Coupling CAP to AudioNote Copper oil 0.22uf, i know this cap really sound good, but have 1 problem, cap spoilt, according to my diy shop here. so i choose Mundorf silver/oil.

Hi,

how to post the photos

thanks.

[quote:2b3247a4ec="viewer"]Hi,

how to post the photos

thanks.[/quote]

Hi viewer,

log in to http://www.photobucket.com/. register first, is free. after that wait for email notification,using email to activate you account then only can up load your photo, anysize photo, this photo bucket will adjust the correct size for you, dont worry. :wink: let me know if need help.

Hi,

i need to verify my last post on the ERICSSON tube VS Western Electric tube.
at first i try my WE, sound sweet, easy to accept that kind of MUSIC. the Vocal part is like 3D n also some of intrument too.
After change to ERICSSON thing change, vacal more to natural, intrument part more clear, but 1 disadvantage, noisy compare to WE when increase the volume. Now i going back to WE because the sound more easy to accept(TUBE FEEL). if anyone got budget buy 1 pair of WE396A n try it, let me know the result too. thank for sharing

My WE396A left is 1952 , right is 1949 secondhand tube

hi,

my upgraded Mhzs cd 33's photos as follow for sharing.
The sound great than CD66 much.

One more photo.

Great modification!

can i know what is marked with red ink? what value? thanks!

Hi, Superwhite,

IC is opa627am the white cap value is 0.1uf/630v UCC cap (Taiwan). ths sound better than wimma box just $9.00 each in this web site.
the function  is filter caps for OPA627am. Can maked the sound body shap.

Thanks.

Hi superwhite,

The cap at the back is Jensen cap of 100uf/150v.

Thanks.

Superwhite,

May i know which part of Malaysia u are in? KL/PJ? I'm new in DIY, I'm from malaysia too, may i know which shop in Malaysia u always get your part/component?

Did you compare the GE 5670 with your 396A is it a lot of differences or just slight different?  Where can i get the GE 5670 in Malaysia? what's the price?

Hi WINDWSS,

Great to have friend from Malaysia. i'm from KL, work in PJ. i also new in DIY. In Malaysia only have 2 DIY shop :cry: , the most stock is OCTAVE PJ, another 1 is DIYPARADISE Kuchai lama(part time). not much choose here, the shop that is selling GE5670 is DIYparadise RM45/pc. but i prefer WE396A(my opinion). you want to put GE5670 to your CD player? what CD player you are using?

i did't compare the GE5670 with WE396A, but if you have we can try it out :wink: . different tube have different sound characteristic, is up to individual to discover it, hope can share MUSIC with you.

Calvin
HP 012-2990511

Hi viewer,

Thanks for sharing, hope i can upgrade like your CDP

[quote:ed06f264b0="viewer"]Hi superwhite,

The cap at the back is Jensen cap of 100uf/150v.

Thanks.[/quote]

can i change this to black gate NH 100uf 160V or Black Gate FK 100uf 100V? any different with Jensen?

Thanks

Hi, superwhite;

If changed to black gate, the sound will be HI FI sound than Jensen.
Jensen cap can provide muscial sound.

up to you to use.

thanks.

Hi superwhite,

I'm using BADA HD-21 single tube player.



viewer,
If not mistaken, follow electronics theory it is safer to us cap with voltage tolerance equal or larger than the original to avoid burst right?

Since Jensen is 100uF,150V we shall use us ecap with 100uF, >= 150V right?

Hi windwss,

the original ecap is 100uf/100v. So use ecap >or =100v is ok.


Thanks.

Thanks viewer,

will try to look for Jensen cap like your one 100uf 150V  :wink:

Hi superwhite,

It doesn't matter.
I will wait for hearing from you.
A much different when dio it.


Thanks.

Hi viewer,

can i know who has more jensen cap to choose? where can i find it? do there sell to oversea? very hard to find Jensen cap here, please help :cry:

can i get jensen cap from william sir? i may want to buy pre-amp from him.....

Thanks!

Good morning, Superwhite,


You can buy the jensen cap from William.

[quote:7ce7d89851="viewer"]Good morning, Superwhite,


You can buy the jensen cap from William.[/quote]

Great!   Thanks, Bro! :wink:

Hi VIEWER,

Do you know any sound different on this cap if change to other? is this cap function to supply voltage to the tube? or other function?

Thanks!

Hi superwhite,

This cap is supply power for tubes, so very import for sound quality.

When i changed it from M-cap, the sound become detail, smooth and powerful and very balance, win too much.  M-cap's sound just clear only. I also found that have  broken at the bottom of M-caps and other solen caps also. Because they to close  the pcb broad, it were burn by the solder with  the worker.

So i remind all MHZS's cdp owner of this.

Thank you fro sharing.

Hi viewer,

How about the 2 silver cap on top of the picture superwhite show you (very near to the tube)? what's their function/purpose? Is it supply power to the tube as well?

Which cap play more role in sound quality? the cap superwhite circle or the 2 caps near the tube?

[quote:0615b2cd22="viewer"]Hi superwhite,

This cap is supply power for tubes, so very import for sound quality.

When i changed it from M-cap, the sound become detail, smooth and powerful and very balance, win too much.  M-cap's sound just clear only. I also found that have  broken at the bottom of M-caps and other solen caps also. Because they to close  the pcb broad, it were burn by the solder with  the worker.

So i remind all MHZS's cdp owner of this.

Thank you fro sharing.[/quote]

Hi Viewer,

Thanks for your info. look like we got the right choice. :wink:

Hi winwss,

The two caps in front of the tubes as a filter of opa 2604's outup, so affect of the sound two much.

both are important, if change boths, that the sound will be closed to prefect.

Have you upgraded you cdp also?

thank you for sharing.