[odoe]

Here is my new Alien DAC as of right now. Not cased yet, and I'm going to change out the radio shack stereo jack for 2 RCA connectors I'll be ordering with some other stuff next week, as well as adding a SPST switch for fun. I had to do quite a bit of searching as I was not familiar with SMD components, especially verifying that the SMD caps could go on in any direction. But after some homework, I got it done on my first try. This is only my second DIY, the first being a cmoy. I really had fun with this one!

I have to thank the head-fi'ers here, because I did lots of rummaging through old threads and even referring to other peoples Alien DAC builds. I really am digging this DIY hobby!

 

[kklee]

I was inspired by the nice clean look of my β22 amp so I decided to re-do the front panel of my Millett Hybrid to match.

Original Front Panel:

New Front Panel:

 

[bhjazz]

Quote:

Originally Posted by dubfire /img/forum/go_quote.gif

Very nice dubfire! And a matching knob to boot! Beauty of a build!

 

[amb]

Quote:

Originally Posted by kklee /img/forum/go_quote.gif I was inspired by the nice clean look of my β22 amp so I decided to re-do the front panel of my Millett Hybrid to match.

Not that anything was wrong with the original -- it was very nice too. I actually like the larger, centrally-located volume knob and the black panel more...

 

[Ace o' Spades]

Quote:

Originally Posted by amb /img/forum/go_quote.gif

Mmmmm...

Someone pick my jaw up off the floor.

 

[mojo]

My cmoy in an Altoids tin. Unusual because it has two 9V batteries. The improvement two batteries makes is substantial, especially with Sennies but also on easier to drive phones like ATH W5000s. With Shure E3Cs it's less noticable but still there.

Tight fit!

 

[sphinxllama]

Finaly I finished my SOHA.

Here are some Pics:















Thanks to all you DIYERs!!! Without you guys I would have had a very hard time putting this together and figuring out some mistakes I made

.

 

[Seaside]

This amp is originated from the amp shown in this thread -

http://www.head-fi.org/forums/showth...threadid=50478.

And based on the Sijosae's modified design of that amp above.
I used Sijosae's SHA design as reference, with little change of my own.

So.... here's the pic of the amp, top and bottom.

I added simple 7812 regulation circuit on it, since this amp requires regulated power supply. some value of parts and wiring has been changed as the way I like.

Size is little smaller than Altoid tin.


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[fortney]

I like it, Seaside.
Is that like the Poorman's Zen by Sijosae?

F

 

[Seaside]

Quote:

Originally Posted by fortney /img/forum/go_quote.gif I like it, Seaside. Is that like the Poorman's Zen by Sijosae? F

Thanks fortney.
Yup, you are right. I used his design as reference.
I should have stated this at the posting above. (And I edited it accodingly)
I would say this amp is 85% the same with Sijosae's SHA with little touch of my own.

I origianlly made two versions a few years ago.
one with the design in that thread, and the other with sijosae's design with exatly the same parts with the same value he suggested. I liked sijosae's better since it is easier and practical. But both were kinda big and messed up at the bottom due to my lack of soldering/wiring skill back then. So I recently decided make it again used sijosae's desgin as reference. Some parts have been salvaged from my old sijosae SHA, and some have been replaced with different value as the way i like. That's why I called it revised. Then, I wanted it small this time. As a result of that, the amp come out to be just like what sijosae made and I like it too.

 

[fortney]

Please don't think I was trying to correct you.

I built the Sijosae model about 6 months ago and like it very much.
I used a 40 ohm power resistor and put bypass caps around the 1000uF caps. I think the bypass caps increased the treble output.
I heatsunk (?) the MOSFETs to the case bottom and everything stays pretty cool.

My layout is mostly accidental parts placement. I think I will make another like yours: sounds great; looks great.

F

 

[Seaside]

fortney, not at all. I should have mentioned that at the first place.

I am actually happy to see someone who made the same thing.
That means I know someone who can share my feelings about this amp.
I was thinking about the same way you made yours, using case as a heatsink idea. But I throw that out, since I do not have a case and this amp is not gonna be a portable anyway. Actually almost all small amps I made are naked like that w/o case. In that way I can mod easily without taking case off, and I am not gonna carry my amps arround. Guess I like to see naked rather than all wrapped in or something.

If you do not mind, I would suggest some parts for your next build.
This amp is sweet, but its bass tend to overshadow its treble sometimes, u know... so... 220~470uF instead of 1000uF bypassing if needed, 0.33~0.47uF polyprophilene caps, IRF510 rather than 610 would make sound little sharper without loosing its sweetness. And, please show me your next build when you are done.

 

[fortney]

TNX for the suggestions.

F

 

[DaKi][er]

Casting back a few pages to my Aleph-x monoblock amplifier build, i've finally finished them off fully

 

[Seaside]

DaKi][er, Nice amp!

Aleph is the monster. Very good amp indeed, and very good heater too.
I like your case, especially the mesh part on the top.
Too bad that you have tremendous amount of heat avaiable but not able to cook eggs on it.

Take a look at the bigger monster when you have time - Aleph4 made by Mr. Kwon at HAS

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