opa 627bp in MHZS cd33

shifu Viewer,

u DIY the hole or ask the shop to do it for you?

By teh way need your info, have u use the LCR film & foil capacitor? is it better than the ROE MKP1845?? since it is film & foil.

Viewer,

the picture is the LCR cap is it manufacture by SCR? but it is USA company oh!

i don't have the tools to make hole on metal part ops:  ops:  so can't do as u did.....

superwhite,

u seems to disappear???!!! :evil:  :evil:

quickily take the photo of your modified audiolab and post it in with new title!!!!

Viewer,

Need your info:

1) In Hk, where to buy cheap black gate? 鸭己？女人街？ or ocative?

2) I heard Jensen ecap also not bad, where to buy? which model is good?what's the price different if compare with blackgate standard?

3) my audiolab amp got a lot evox mmk cap, if i wish to cahnge it, what't teh recomendation of replacement? ero mkp1837?(box type) mkp 1845?

ROE MKP 1837 or MKP 1845 anytime is better than evox mmk 8820 right?

thank you viewer & happy new year!


superwhite,
My friend now in HK, if not mistaken he will meet william today (he 12 buy the clone 1sc). He will buy me teh Jensen reservoir (10000uf) for my audiolab too... my audiolab age ~15yrs i believe the reservoir cap almost "gong/die".....

Dear viewer,

have u compare teh balckgate nx-hi-q small cap to teh mkp or mkt or solen cap? how's teh result?

e.g 0.47uf/50v BG hi-Q have small size, it is easier to get than other 0.47uF/100v mkp/film/foil. Can a BG hi-Q ecap sound better than mkt/mkp/film&foil??

dear viewer,

any idea of the sound quality of Vishay sprague 735P (metallized polyproprene cap)? is the cahracteristic similar to roe mkp? since in malysia roe mkp only very limited choice of uF. Only mkt 1813 have more choice.

If 735P is better than mkt 1813 then i will use 735P. Since polypropene is usually lower dissipation factor than polyester(mkt).

[quote:feecfba92c="Abhader08"]windwss,

I am now having an Audiolab 8000A MK2 integrated Amp, it's look diffenrent compare to yours. Any idea which path or cap should i mod to improve the vocal. Now my hifi set totally changed to cd33, audiolab 8000A for pre, audiolab 8000P for power, QED 25th silver anyversary speaker cable then Rogers LS7t. I am very satisfied at this time. just see is there any cap for my audiolab 8000A. pls advice. :wink:  :wink:  :wink:

superwhite,

busy people also need to have some fun time, just relax we will be having a perfect plan soon. don't force yourself too hard, every succeed people also had their difficult period. your sincerely.        [/quote]

Is your audiolab mk2 similar as photo attached? s/n: start with 2, then got a flat cable.
since u got 8000p u can do another trick ---> separate your 8000A to pre & power by removing 2 resistor so that the pre & power inside your 8000A will not connect internally. (I got info on this call or email me for more info).

then change the ecap in pream side ~8-10caps only (all to BG) cost ~rm150. u will see a lot different a lot detail. twisted the cable of the output to RCA and twisted the inner powre cable. Since u have 8000P so no need change BG cap in 8000A's power amp side (~4caps)

if still not satisfy and wish the audiolab vocal slightly warmer then u may change the EVOX mmk polyester cap (tatal ~40caps) in pre amp &power am side to other better cap. (i will do this soon but i'm only low cost high gain so will only change the evox to ROE mkt for better detail & natural sound.... if u want better then may look for some tin foil or cu/oil but will cost u a bomb. my audiolab got ~8pcs 0.47uf, 6pcs 0.33uF evox cap...

superwhite,

Finally u r back!! if u still not "pou tao" i'm thinking to post a "WANTED" poster for you!

aharder,

Ya, u can do bi-amp, 8000A drive HF & 8000P drive LF, then u won't waste the 60W of 8000A than if u use it for pre only.

whether Jensen gold is better than original Elna black negative? i'm not sure. Maybe other here like viewer can tell.

I can tell is that the charcteristic of most jensen is sweet sound and my 8000A almost 15yrs old, no matter how the big cap is going to die soon as i can feel the degrade of it's performance... my friend will help me buy from william. the price is ~HK210/pcs u can check the price in hififever.

Most probably i will receive the big cap during CNY, then i will able to tell u the performance. After CNY he will go HK again then back in May.
Since u no hurry on modify audiolab, i suggest let me test & see the result in CNY then only u decide whether to buy or not.

Another info, spend the same money on mod audiolab seems have better result than cdp.

for audiolab, u just need to replace the 3 cap (100uF/35v) near power supply already can see a lot improvement. Imagine ur 8000A is ~10yrs old, estimate it been use 3hr/day, 10yrs-->10,000hr so most ecap nearly die....


hey, if u change opamp can sell the old 2604 to me? as i'm not going to change to 637 or any upgrade... if i will do any upgrade in future i will try to bypass opa.

[quote:8da2f87efb="Abhader08"]dear all,

my 8000a mostly equiped with elna duorex II ecap. do anybody know this cap?[/quote]

my old version is with duorex, so i guess duorex II is the ancestor of silmic II.

pls share with us the result after u had replace it!

arharder,

can you post the photo of your new opa?

viewer,

tht's the same thing i can think of..... maybe grounding....

arharder,

ha..becareful while clean the laser lens, don't like me spoil it.... if after cleaning still not ok. then change back to opa 2604 still not ok... then maybe your CD pickup had show aging. Last time u said ur cdp can't read all CD right? did u replace a new 1 last time?

I think china made cdp use the loudsy sony kss-213, if your luck good it may last 1-2yrs, if bad luck 3month can see some sign/symptom....

lucky Jln pasar is selling the cd pickup mechanism (include motor) at RM22, 1 year change 1 time also no problem.....

viewer,

My friend is thinking to buy a LITE DAC AH.

Do u know whether buy a new 1? and where to buy a 2nd hand in HK or china?

[quote:6a92344ebb="viewer"]hi windwss,

I suggest buy it from 2bd hand market in hk , price around $400.00
after  modifity it. the sound is = $8k dac.

Thanks.[/quote]

In HK which place easy to find 2nd hand Lite DAC AH?

if <hk500 i will ask him to get 1 for me too!

by the way i had saw many type lite dac-ah some are red board some are green board like you, which board is good/not easily spoil during soldering?

thank you shifu..... i had saw your modified DAC picture... really don't know how u can squeeze so many big size cap into the small box!

if he buy it i will help him to modify...but need your advice on modify output circuit.

change cap is quite easy.

by the way is 627 BP better than 627AP?

kin,
pls refer topic by dynamicdog.... if not mistaken he said for hifi using coxial is better than optical, for AV opctical is better...

viewer,

just to check with u, normally the opa 627 will use together with 2 coupling cap, u r using 0.1uF right? some are using BG0.47uF NH hi Q, which value Do u rcomend for 627bp? So using BG or other film foil cap better?

thank you viewer,

than BG 0.47nh hi q should suit me... hovland music cap is quite expensive...

do u think TL072cp can be replace by opa 627 or opa 2604?
the TL072 is the opa in my audiolab amp, and the 2 coupling cap is 0.47uF/63v, so if i change it to larger uF bass shall inrease right? thinking change it to 1uF so taht bass extension more....

viewer,

I understand that Lite dac-AH also got blank board to sell.

May i know:
1) is Hk have this type of blank DAC-AC board sell?
2) Is this blank Dac-ah contain the 8pcs TDA Chip on board or it is totally blank/empty?

I found BC/philips 030/031series is also cheap and nice e-cap, i prefer this than the panasonic FC.

viewer,

ok thanks, i saw there is blank board sell in china www.lite8.com so i thought HK will sell it too....

Aharder,

When it can switch on, is the display ok?

check all the connection (i found this type of china made board not reliable, the most u dissemble n assemble than more problem...), check your cdp ribbon cable connection and use multimeter to check the ribbon cable. There is 1 time i found 3 cable insdie the ribbon cable break but can't observer visually, it is a haie line break... so some time can play sometime can't....

kin,

u r right, so arharder use 2 pieces 797 mount on a board with adapter.

So what system are you using now?

在HIFI，很多老机分分钟比新机好(尤其是一些硬体的用料)， 而小磨之后表现更好。。
只是好又便宜的旧机真是可遇不可求！！
在马来西亚要找好二手机更难！

ozrayyau,

可否贴些MD10内部的照片来看看？

ozrayyau,

Your photo is after change to blackgate cap right?

what's the original e-cap?
where you buy in HK and how much is it?
where can i get more info on this MD 10, for example the chip use and so on....

thank you.

Viewer,

I know u had use many time the ERO blue colour axial type MKP cap, may i know what ther full model no.? last time you write as MKP 1852 but it seems not in the manufacturer list? is it 1846?

as i know mkp1845 is the green colour(axial lead)

Thank you viewer, initially i thought it is different model since i only saw green mkp1845 and never saw blue 1845 here.....

by the way have u use the BC Component blue colour film&foil cap before (2222460-464 series)?? how's its performance compare to mkt 1813?

Viewer,

U seems had try a lot of cap or component.

Later if got time can you share with use your experience in each type of brand&model/component which you had try before, or maybe u can just write a a word format from time to time when you are free.....

Since you got so much experience in modify equipment, have you DIY the whole set of equipment before?

Shifu Viewer,

Need your advice again....

Do u have any idea a better replacement for ENA BLACK NEGATIVE 10000UF reservoir?
The jansen is out of stock.

The easier obtain cap is as below:
1)BC component 2222050(long life)
2)BHC AEROVOX ALT22 (long life)

which 1 you think is better?

i prefer a reservoir which have warm & soft sound & less noise....

AHARDER,

HK Hififever only got the 4pole type jensen 10000uF/63 at this moment. Theoritically it seems better than 2pole, but practically it depend....
but make sure u know how to connect the 4 pole type..

u if want must inform by today if u 12 get in this cny. if not wait for another time when my friend go hk again.

since your 8000C got plenty of space , why not try KK sir's suggestion use 10pcs 1000uF parallel or 5pc 2200uf-->must better result!

VIEWER,

Superwhite currently busy in work and he temporary stop modification. he already chae a lot thing in his CD33 except the clock. For his 8000S he had change all e-cap to BG..... i think his next step is to look for a better speaker.....

now i'm waiting to listen to my friend's clone proAc 1sc during coming Chiness New year and als waiting parts from him...

By the way, has u try the AD8610 / AD825 as OPA? any comment?

aharder,

your 8000c using TL071CP not TL072CP ah??

i had measure the voltage between V+ & V- in my 8000A opa(tl072cp) it is 24.77V, it is safer if use opa which can support ~25V.

I most probably will try a cheap OPA2132.

Kk sir,
Thanks for remind me.....

It is rail to rail +12.38 &-12.38, mean total diffrences 24.77V at V+ when refer to V- .

so it is +12.38,0,-12.38-->total 24.77V difference.

Since i put probe at point V+ (pin 8) & point V- (pin 4)

Dear KK sir,

from your experience, which OPA is suit to replace the TL072 in this 8000A.
(i wish to increase slightly clear, natural & stronger but good control of bass, warmer vocal in 8000A)
In my mind got 3 choice --> 1) AD 8066 (since it's bass better than opa2132/34   2)OPA 2132/34  3) AD 8620 (i worry this too agresive)

i know most people will suggest opa627 : ) but this it is expensive in malaysia at least 2x-3x the price as the item 1,2,3 above. And main issue is taht i don't know how to build the circuit to pair up the opa627 with coupling cap : (


ahrader,
had check, octave sell AD8066 at rm85 (include the panel, BG cap), farnell sell TI opa2132 (dip) at ~rm25.
TL071 is single channel, u may just get a opa 627 (dip) ....since it can support +/-15v (typ)-->total=30v

Dear KK,

Only 1 piece TL072 (DUAL channel), got 2 cap(coupling) beside it (2x0.47uF/63v).
thank pls send me the info for discrete soulution!! :  

[quote:e177de385f="h3d"]Hi everyone,

Last week I did a comparison with a Arcam CD92. My sound was just as transparant and clear. His was a bit warmer. The differences were so small I was glad I paid a third of his price.

Yesterday a comparison with a modified Pioneer DP-S901. this one I clearly won. More clarity, better placement of the instruments, more high. I think because of the tubes.

A question to WindWWS:

You stated that eclipse pioneer tubes were the best for an acceptable price. Can you tell me where to  find them?[/quote]

H3D,
I purchase it from USA, i actually intended to purchase again but unfortunately the supplier reply me today that they no longer have the stock.

[quote:2899a3ea8e="Abhader08"]windwss,

TL071CP is from my 8000P power amp. there are two ICs which located one in each mono circuit, total have two ICs. if OPA627 can be used then i might probally change to it.[/quote]

If that's the case most probably u can use the 627. just test the voltage in your TL071.

the 627 is +/18v = 36v(rail to rail) if not mistaken.

last weekend i had replace the balck negative(resevoir) of 8000A with Jensen in my friend's amp. It is fantastic... sweet , warm vocal with decend detail.....the improvement of vocal is much more than using WE396 in CDP.....

h3d,

Sorry since never use the 6385 so can't give comment.
Only know the price is a large difference!!!! ~20x different in cost.
And the sound cannot be 20x better : )

i undersatnd u have 6385 then u just spend <USD 10/pc to get the bendix then make comparation to share with us : )

i personally prefer eclipse pioneer than bedix even they construct in the similar way....

H3D,

Fyi, when i start modification i had set the target to use only cheap &nice part, thus i don't have much idea on expensive part......

hi mike,

nice to hera from your sharing on modification.

By the way how much better the opa2107 compare to opa2132? How about comparison with opa627Ap? just a bit supprise the opa627 is not in your future testing list, is there any special reason?

AD797 seems not as good as opa627 in cd33 (my friend's comment after using it)

By the way, it seems that a lot of people like to use panasonic FC, but i personally feel that it is too soft n bass a bit loose, can improve a bit at high frequency when bypass with ROE mkp/mkt i prefer to use BC(Formerly philips) e-cap : )

kindly share with us after your testing on various opa and other modification. Thank you!

SS

Hi, mike,

So far in the market in malaysia, for KSS-213C &213Q i only can get the china made product!
last several month i just just replace the cd pick-up... anyway for kss-213Q use in cd-33 so far 2 of my friends who use it don't have problem yet. So good luck to u as well!

u r right, there r a lot fake product from china and sometimes it is hard to know it from the packing. As we all know they are a lot of oversea brand have their factory in china, thus even for panasonic FC cap u can see diifferent type of packing/construction of the lead. sanyo os-con in china product is with white print but the same cap sell in farnel is in gold print work (the outer plastic cover quality look better).

newfan,

For this cd33, i will suggest little mod is enough, try don't touch the e-cap, since the PCB is not s reliable, it may give u a lot hectic. My friend and i is suffering a lot.

Recomended minor mod:
1) change tube
2) change OPA - 627 is quite suit cd33
3) change the 0.22uf/630v cap at power supply & near the tube.
4) If really wish to change e-cap then change the 100uf/100v & 100uf/160v to better cap like blackgate, i think that will do.

Mcap silver obviously better than mcap zn. Mcap silver when compare to jensen Cu in oil/ audionote cu in oil is different type of sound. If u like vocal then jensen/audio note will be more suitable.

[quote:31d0895900="superwhite"]Hi Bro VIEWER n WINDSS,

i'm back!  :wink:  how are u lately? n how was your CD33? hope you can enjoy it much as i do.   pls up date me with any new thing impliment on your CD....

Hi bro alfcat
nice WE tube, i love it so much..... hope you like the lovely sound of WE, as i enjoy this tube so much.... [/quote]

Recently just start DIY simple amp, 1 is the simple headphone amp (shld be finish by this weekend).
Another project is DIY a preamp using 6N3 tube.... still in the process....

ss

Hi, Alfcat,

At power sides, imo BG is the best. If compare to Elna BG is lower noise with better detail/resolution. But damn expensive especially for high voltage cap.

Hi t,

u replace the 75V zener with 100v changing the value of other resistor & capacitor at power section right? when u increase from 75V to 100V, the current also increase, you won't find your resistor is very hot??

actually what the chatode & plate resistor in cd33?

ss

Dear Cat,

let your player warm up for ~30hr then only proceed for other action.....all the circuit in your new board is not run in yet. So it is like a new player now....

No wonder when i plug the 627 in the CD player, i actually can't heard much imporvement compare to plug into my amp.

Anyway i'm now using AD825....it suit my taste as i found 627AP's bass is fat is not so control compare AD825 and also not as detail as AD825 in my system.

Hi T,

How the epcos cap sound characteristic compare to Vishay mkp & BC mkp??

the yellow colour film cap you use is what brand?

ss