[gwikse]

Nice mods. Think I`ll try some of those caps myself if I can find them at a reasonable price.
I`ll replace the rectifier bridge with BYV27-150`s and possibly the transformer as well.
 
Has anyone tried the mini-i with lovely cube HPA?
 
Edit: Happy new year

 

[T.IIZUKA]

Quote:

Nice mods. Think I`ll try some of those caps myself if I can find them at a reasonable price.
I`ll replace the rectifier bridge with BYV27-150`s and possibly the transformer as well.
 
Has anyone tried the mini-i with lovely cube HPA?
 
Edit: Happy new year

 
Thanks,
It is a good idea of the Bridge Diode.
 
HPA would be better for changing the coupling capacitors.
Comparison of Headphone amplifier.
 
Lovely Cube much better than the MATRIX mini-i.
 
Happy New Year!

 

[palchiu]

Just replaced diodes, I use ER206(35ns) with hole boards. BVY27 is 25ns, almost same fast.
 
Forget pics, burning now.
 
Another thing, I replaced FM2200uF to Rubycon ZL 2200uF. FMs are too much echo(church sound?)... ZL is more nature.
 
Happy New Year!

 

[T.IIZUKA]

 
 
Everyone, is more about the parts.
Amazing amount of knowledge. 
 
Japan does not seem to sell as usual.
What do I buy the parts and where?

Quote:

Just replaced diodes, I use ER206(35ns) with hole boards. BVY27 is 25ns, almost same fast.
 
Forget pics, burning now.
 
Another thing, I replaced FM2200uF to Rubycon ZL 2200uF. FMs are too much echo(church sound?)... ZL is more nature.
 
Happy New Year!

 

[palchiu]

Quote:

 
 
Everyone, is more about the parts.
Amazing amount of knowledge. 
 
Japan does not seem to sell as usual.
What do I buy the parts and where?

 

Hi T.IIZUKA,
 
What's parts you need?

 

[T.IIZUKA]

 

Hi T.IIZUKA,
 
What's parts you need?

 
 
I'm looking for is a Bridge Diode.
How to find wrong with me?
 
Japan's main mail-order house. (electronic components)
 
Marutsu
http://www.marutsu.co.jp/ichiran/?SHO=010204
 
Sengoku-densho @ Akihabara
http://www.sengoku.co.jp/mod/sgk_cart/search.php?toku =% 25C8% 25BE% 25C6% 25B3% 25C2% 25CEDi & cond8 = or & dai =% 25A4% 25D6% 25A4% 25EA% 25A4% 25C3% 25A4% 25B8 & chu = & syo = & k3 = 0 & pflg = n & list = 2
 
Akizuki-denshi @ Akihabara
http://akizukidenshi.com/catalog/c/cbridge/
 
Kyoritsu-denshi @ Nipponbashi, Osaka
http://eleshop.jp/shop/c/c111111_p2/

 

[palchiu]

I've found some In-Line type and "ultrafast" type, but I can't find where they've stock.
 
EDI BRUS1 BRUS5 series 50ns
Fagor D4SBU series 35/50ns
 
Vishay EDF1 series (4-pin DIP) 50ns
 
So, I decide faster way. Use hole board with rectifiers.
 
Burning for one night, here comes more focus from background.
Edit: These're Motorola MUR120 200V/1A 25nS

 

 
Here are rectifiers I used for DIY.

 
Left to right:
新電元 D10XB60 600V/10A not fast, but for big amp.
ON MUR860 600V/8A 25nS
Panjit ER206 600V/2A 35nS
Philips BVY27-200 200V/2A 25nS
Philips 1N5062 800V/2A 3uS<- not fast, but some DIYer likes it's sound.

 

[T.IIZUKA]

"Mod" the first time this year.
OPAMP exchanged.
 
Before : ADI OP275 x3
 

 

 
From left AD8599, OP275.
 

 
After: AD8599ADR
 

 
 
Current Configuration.
 

 
 
Next plan.
Regulator and a Bridge Diode.
Soon, the regulator parts are available.
 
Bridge Diodes are looking for a place that sells.

 

[Ph1lerAudi0]

Next step:
 
 
Ship it to my Home address

 
PA

 

[palchiu]

Quote:

"Mod" the first time this year.
OPAMP exchanged.
...

T.IIZUKA Well done!
 
I'm waiting for my OPA1612s

 
I'm thinking bestway to slove the heatsink problem for 317/337, internal height limited is 35mm.

 
 

 
Quote:

/img/forum/go_quote.gif

Next step:
 
 
Ship it to my Home address

 
PA

 
Welcome to Matrix

 

 

 

[T.IIZUKA]

Quote:

Quote:

"Mod" the first time this year.
OPAMP exchanged.
...

T.IIZUKA Well done!
 
I'm waiting for my OPA1612s

 
I'm thinking bestway to slove the heatsink problem for 317/337, internal height limited is 35mm.

 

 
 
Narrow work space.
Please work with caution.
 
 
LM337 regulator is planning to use.
(Negative Voltage Regulator)
 
The heat sink was prepared as follows.
This process may be required.
 

 

 

[gwikse]

Maybe mounting the regulator to the chassis may free up some space (using the chassis as a heat sink).

 

[Ph1lerAudi0]

There's a review here comparing the XDA-1 to the Matrix;
 
http://www.head-fi.org/forum/thread/528635/emotiva-xda-1-vs-matrix-mini-i
 
Apparently the matrix wins on sound quality and the emotiva wins at imaging (detail, location of instruments, width of soundstage).
 
 
I wonder, this question especially to T.IIZUKA and PALCHIU but of course others can pipe in, do the mods you installed improve the matrix's imaging? If so, then those blue and black label matrix editions may be a real winner.
 
PA

 

[gwikse]

Has anyone tried the "Class-A OPA mod"?

 

[T.IIZUKA]

Quote:

I wonder, this question especially to T.IIZUKA and PALCHIU but of course others can pipe in, do the mods you installed improve the matrix's imaging? If so, then those blue and black label matrix editions may be a real winner.
 
PA

I'm enjoying the process. 

 
 
Modifications not recommended for everyone.
I have done that with knowledge of risk.
 
Will buy yen were JPY70,000(about $840) ONKYO DAC-1000.
I do not see mod.
 
Advantage of MATRIX mini-i think its high cost performance.
The multi-input is impressive.
And the fun modding.

mini-i If the remote control operation, it is better.
 
 
ONKYO DAC-1000 Review (Japanese-text only)
http://ascii.jp/elem/000/000/578/578484/
 
Interview with the developers (Japanese-text only)
http://av.watch.impress.co.jp/docs/topic/20101227_417603.html