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The Melos Modification Thread - Page 4

post #46 of 278
holy cramoley. just don't put that thing on your crotch, please!
post #47 of 278
Quote:
Originally Posted by nikongod
my melos hasnt had its lid on in ages, it still dosnt. its sort of like saying your done even just for now... this is of course not true.

it has been my previous experience that quality is wayyyy better than size in a tube suply.
The case being open is a common phenomenom. I do not like it and I'm trying to rectify it myself. I do not know which screw goes where anymore

Quality is better than size but how about electrolytics bypassed with film? 1000 to 100 is kind of a drastic reduction.
post #48 of 278
the melos has, hmm, 8 screws just for the lid, and they aren't all interchangable either, annoyingly. keep those screws in the right order if you can!
post #49 of 278
Quote:
Originally Posted by lan
Quality is better than size but how about electrolytics bypassed with film? 1000 to 100 is kind of a drastic reduction.
i tried a hybrid of a big film with a big electrolytic with my "elcheapo diy tubeamp" and did not like the results.

from that amp, i have a total of just over 150uf (all cheap motor-run film caps) in the psu for the power stage, plus 1 250uf in electrolytic before a choke. that amp will put 2X4W into speakers all day. the 6dj8 is specced to put out 1W MAX, im sure in preamp mode its WAY less. if it dosnt work i can allways put the electrolytic back. im pretty sure it will work though.

with my millet, i built with bypassed electrolytics first and then removed them. i prefered the no-film variant. by a decent margin.
post #50 of 278
Quote:
Originally Posted by Jahn
the melos has, hmm, 8 screws just for the lid, and they aren't all interchangable either, annoyingly.
I don't recall the lid screws being different from one another on mine .
post #51 of 278
Thread Starter 
My screws are different.


Anyway, got a question for you guys. I normaly use soniccraft for my capacitors because they have basically everything. I just talked to them again however and they said that he may not have the 1uf auricaps - the most important caps. He said he will call me back later to verify.

So, anyone know where to source 200v auricaps in the United States?
post #52 of 278
Just another reminder to self not to dive into the world of DIY. I might never find my way out! Solder on, brave modders!
post #53 of 278
Why don't you try Partsconnexion. They are a head-fi sponsor and they have 15% off until sept 30th.

hmm. reminds me i should take advantage of this sale also....
post #54 of 278
Thread Starter 
Quote:
Originally Posted by lan
Why don't you try Partsconnexion. They are a head-fi sponsor and they have 15% off until sept 30th.

hmm. reminds me i should take advantage of this sale also....

Oh man I actually was going to do that but completley forgot and went with soniccraft out of habit....ugh
post #55 of 278
Thread Starter 
partsconnexion came through. Here's what I ordered

8x AURICAP- 62036 1.0 200v .66"D x .78"L $12.22 $9.50
2x BLKGATE- 60089 NX 1000 25v 16 x 24 $18.50 $12.50
1x BLKGATE- 60224 Std 100 160v 16 x 36 $19.95 $13.50
1xBLKGATE- 60087 Std 2200 16v 18 x 36 $11.50 $7.95

Those should all be easy to replace as they are near or at the top of the board. Those capacitors will replace the following in my melos

Auricaps - replace the 4 1.5uf 100v between tubes and 4 ICC yellow caps
Blackgate Nx 1000 - replace 470uf 25v rubycon
Blackgate Standard 100uf 160v - replace the grey 100uf 160v cap about 3 inches above where the 4 auricaps will be
Blackgate Standard 2200uf 16v - replace rubycon dark blue capacitor to far right of the board

Should be here in 5-7 business days, the next fastest shipping was a quarter of the damn order cost...


I still have to replace these caps on my melos however

200v/1000uf - no clue what to replace this beast with
250v/470uf rubycon - again, no clue
2x 16v 6800uf rubycon - will 4700uf 16v Blackgate Standard work or do i need more microfarads?
post #56 of 278
Why 200V 1uF instead of 200V 2uF or larger voltage 1.5uF for the Auricaps?

I would've gotten FK series instead of Standard 16V 2200uF. I don't think Standard sounds that great. I would go with quality than quantity also so...

>>>>>2x 16v 6800uf rubycon - will 4700uf 16v Blackgate Standard work or do i need more microfarads?

This may work but like I said, I don't like Standard.

Are you going to mod this once or upgrade over time? If just once or twice, might as well put the best stuff in once.
post #57 of 278
Thread Starter 
Quote:
Originally Posted by lan
Why 200V 1uF instead of 200V 2uF or larger voltage 1.5uF for the Auricaps?
Space. 4 of them have to fit stacked in between the tubes unless I want to do serious re-routing with wire. These are the same capacitors Carlo used in Bozebutton's. They already have to be double-stacked and will lean against the tubes

Quote:
I would've gotten FK series instead of Standard 16V 2200uF. I don't think Standard sounds that great. I would go with quality than quantity also so...
Standard = $7.50 a cap. FK series = $24 per cap

Quote:
>>>>>2x 16v 6800uf rubycon - will 4700uf 16v Blackgate Standard work or do i need more microfarads?

This may work but like I said, I don't like Standard.
If I did fk series for those, I would have to go 10000uf because they don't have anything else close. Now we're talking $160 a cap. Don't think so.


Quote:
Are you going to mod this once or upgrade over time? If just once or twice, might as well put the best stuff in once.
It's going to be done over a period of probably 3 installments, each time using the best parts I can afford. FK series prices are stratospheric.
post #58 of 278
Hmm, just thought I would add that the screws in my cover are all the same too.
post #59 of 278
Quote:
Originally Posted by Computerpro3
Standard = $7.50 a cap. FK series = $24 per cap

If I did fk series for those, I would have to go 10000uf because they don't have anything else close. Now we're talking $160 a cap. Don't think so.

It's going to be done over a period of probably 3 installments, each time using the best parts I can afford. FK series prices are stratospheric.
7.50 to 24 is doable and I would've done that. I didn't recommend doing blackgate for the 6800 one. It is indeed too expensive BUT I wouldn't bother spending $ on standard either. I'd look for something else.
post #60 of 278
tonight is "no mod night" after the events of yesterday i think i earned it

this is actually a harder task than moding because my mouser parts came. just stuff to replace rusty resistors in the psu. and a new tip for my iron. this is a test of self controll im not sure that i can totally handle... the night is young.

i will say dont skimp much on size for the interstage caps.

i am going to order some lower uf caps for the LV suply. naturally of very high quality.
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