[XFxGeforced]

**56K WARNING**

Finished my Millett Hybrid today. Right now i'm running it on a cd player and my ksc-75s for an hour or more to make sure it wont go haywire on my good phones. Seems to be working great so far though.

heres some pics of it from its premature stage to finished:

heres one of the caps and resistors, well most of them...i got delayed for a day because i bought two too little film caps, and didnt know what the rled resistor was

then i realized it was a normal resistor, they just made the price list funny.

my tube socket leads didnt fit through the holes so i had to solder them ontop

and finished picture one

and a full picture

and the pot i settled on, which worked out even better imo. Not sure what the resistance is, but i tested it with my fluke and it was the most spread out of the ones i had.



the bottom, only a few blobs on there

and a picture of it hooked up (walkman > inter-connect i just built > amp > ksc75s)




*I am currently using a 25v wall wart with it, but i plan on making a power supply soon, and i havent added leds under the tubes :-\

**I made it for my computer, and i plan on making a nice wooden enclosure for it early next week before finals start. It's going to be AV710 > millet > hd580s

***Please tell me if you notice anything wrong with it, like missing components!

-Thanks for looking!

 

[Gontran]

Just finished this today, didn't think it belonged it belonged in the alien dac thread...It's the same PCM2702 type circuit but on a smaller (1"x2") home made PCB with some of my own refinements.

Pictured here first (next to a CF card for scale) without output caps/connector, then in "action".

 

[XFxGeforced]

i did a 4 sec exposure of the tubes with the light on in the room for the first like 1/2 sec so you can see outside and tube light:

 

[khbaur330162]

Quote:

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

That's a disgustingly sick case...

 

[XFxGeforced]

my millett hybrid makes the music worse :-\ is makes all the highs and louder parts crackly and distorted? do i have to set the taper pots or something or what?

 

[~n00beR]

That is a nice layout gontran.

I especialy like the creative layout for the output caps.
Now we just need more and more amps of this size

Quote:

Originally Posted by Gontran /img/forum/go_quote.gif Just finished this today, didn't think it belonged it belonged in the alien dac thread...It's the same PCM2702 type circuit but on a smaller (1"x2") home made PCB with some of my own refinements. Pictured here first (next to a CF card for scale) without output caps/connector, then in "action".

 

[Ferrari]

http://i72.photobucket.com/albums/i161/Ferrari_01/DIY/My%20MH/Afbeelding16.jpg[/IMG]]

http://i72.photobucket.com/albums/i161/Ferrari_01/DIY/My%20MH/Afbeelding005.jpg[/IMG]]

http://i72.photobucket.com/albums/i161/Ferrari_01/DIY/My%20MH/Afbeelding18.jpg[/IMG]]


Happy new year everybody.

 

[ggta]

Where did you buy the cabinets? Directly at ATI?

Is it ATi which made the cuts? Is the power button also from ATI?

The result is beautiful

 

[Ferrari]

ggta,

I bought the enclosures directly from ATI. The power button on the upper enclosure is from ATI, and they indeed made the cut for the button. The cuts on top for the tubes are made by me. The cuts on the lower enclosure are also made by ATI. I'm going to use this one for my next project: the β22.

 

[labmat]

So I finally finished my switch box yesterday and thought I'd share the pics. The knob shown is only temporary I'm going to get a different one thats larger. It switches one input RCA to four outputs RCA + 3x1/8" Mini. I'm going to use it to switch the output of my alien DAC (MacBook) between my Little Dot II+ and my workstations line in which happens to be connected to my speakers.

 

[Gontran]

You could mount the DAC inside there and save the degradation of multiple connectors and cables...

 

[MASantos]

Quote:

Originally Posted by labmat /img/forum/go_quote.gif So I finally finished my switch box yesterday and thought I'd share the pics. The knob shown is only temporary I'm going to get a different one thats larger. It switches one input RCA to four outputs RCA + 3x1/8" Mini. I'm going to use it to switch the output of my alien DAC (MacBook) between my Little Dot II+ and my workstations line in which happens to be connected to my speakers.

Messy wiring but as long as it work well!!!

 

[labmat]

Quote:

Originally Posted by Gontran /img/forum/go_quote.gif You could mount the DAC inside there and save the degradation of multiple connectors and cables...

You took the words right out of my mouth... I'm a little strapped for cash now but my plans are to mount an alien DAC and a tread to power it inside the box with another switch to switch between an external source and the alien DAC.

I'm also going to tidy up the wires soon and re-heat shrink over the solder joints on the rotary switch. My main goal yesterday was to make sure it worked; I messed up the circuits several times.

 

[MASantos]

My PIMETA.

Specifications:

-Hammond 1455N1201 clear extruded aluminium enclosure.
-Alps RK27 Volume pot, aka Alps "Blue"
-Elna Cerafine rail capacitors
-Wima MKS fast reservoir capacitors
-Matched Vishay-Dale resistors
-Socketed gain and buffer bandwith resistors, allows easy tuning
-Class A biased using matched transistors
-1 SMD buffer per channel (bottomside of the board) and 1 DIP8 buffer on the L/R channels
-OPAMPS (in order of preference): AD8620/10, OPA637/627, OPA627 AD8066/65, OPA2227/227, OPA2134/134
-Dual RCA inputs using Nkk switch (silver plated contacts)
-1/4" Neutrik output jack
-Kilo International Volume knob
-24AWG Silver plated copper wiring(done on the underside of the board, allows easy access to the board for easy chip rolling)
-Silver solder

I have built it about one year ago, but never finished the casework. I had some spare time last friday and this is the result (excuse my poor photography skills):

Before:

After:

Front Panel:

Back Panel:

Detail of the dual imput switch:

The LED and ON/OFF switch are not perfectly centered because the panel was not well secured and it moved while drilling, but overall I am pleased with the results.

The power jack wiring is still temporary because I will install a TREAD power supply to use with a external AC/DC wallwart, but I need to get some mounting hardware from my local store.

The panels are not screwed in yet because I aparently lost the screws...

 

[Heady]

Quote:

Originally Posted by labmat /img/forum/go_quote.gif So I finally finished my switch box yesterday and thought I'd share the pics. The knob shown is only temporary I'm going to get a different one thats larger. It switches one input RCA to four outputs RCA + 3x1/8" Mini. I'm going to use it to switch the output of my alien DAC (MacBook) between my Little Dot II+ and my workstations line in which happens to be connected to my speakers.

Looks real neat. Thinking of making a similar switchbox. Would you like to share what switch you used and also what did you use for the wiring.

Thanks.