Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Post pics of your builds....
New Posts  All Forums:Forum Nav:

Post pics of your builds.... - Page 254

post #3796 of 9591
Quote:
Originally Posted by JamesL View Post
Another one - full configuration.


Ti and Marshall really put together some amazing work.
wow i'm so keen on this Y1 its not funny; it should be ready for full relese just after i've finished my bantam project and everything associated with that. cant wait its just what i've been looking for. Any impressions as yet? how does the dac board perform?? the spdif is what i'm most interested in. looks real slick BTW
post #3797 of 9591
more bantam dac photos. this is my 2nd bantam dac build.








I'm now using a 'wipe solder across leads with hot solder wick' technique seems to give a nice uniform coating of solder, almost machine like. but it really was done by hand with a big clumsy soldering pencil tip.

I also defluxed the board - found some spray stuff in a can at my 'tronics store and it seems to work well. I guess I'll deflux from now on since it seems pretty easy to do.
post #3798 of 9591
Very nice soldering! I still prefer the toaster oven
post #3799 of 9591
Finally got around to putting the side panels on for a quick test fit since I'm having some difficulty with the paint (damn Krylon for changing their paint formula while I was in the desert! ) Reason the spacing doesn't look very even is because the panels are literally laying against the sides, being held up by friction alone

Right side:


Left side:


Cherry Figure:

post #3800 of 9591
Quote:
Originally Posted by Nebby View Post
Finally got around to putting the side panels on for a quick test fit since I'm having some difficulty with the paint (damn Krylon for changing their paint formula while I was in the desert! ) Reason the spacing doesn't look very even is because the panels are literally laying against the sides, being held up by friction alone
What drivers are those??
post #3801 of 9591
Very nice work Nebby. That really looks fantastic!
post #3802 of 9591
My first DIY, so please be gentle!............and it works quit good for a total of 28€ of material.





post #3803 of 9591
Quote:
Originally Posted by onform View Post
What drivers are those??
They are the Apex Jr. 8" subs. I've been listening to them last night, and they're amazingly musical, with pretty decent output no less. Can't wait to finish up the paint, do final assembly and get some measurements of 'em.

swt61: Thanks! Coming from you it makes me feel like I did alright with the woodworking
post #3804 of 9591
Quote:
Originally Posted by RuiCanela View Post
My first DIY, so please be gentle!............and it works quit good for a total of 28€ of material.
Nice work!

I suggest trying two batteries as it should make a significant difference with your phones.
post #3805 of 9591

SOHA II + crossfeed

My first DIY amp; the SOHA II and (slightly modified) power supply, and optional crossfeed filter. The four toggles on the right are for controlling the crossfeed (a true bypass, perspective control, treble compensation and bass compensation). The other toggles are for input/output selection and active/passive mode (the box can be used as a passive volume control and optional crossfeed filter when unpowered).




Rear panel has two selectable inputs, using switched jacks so that the left can be used alone for stereo or together with the right for mono, and also an alternative miniplug input for convenience on the other input. There are also outputs for pre-amp use (selectable with a front-panel toggle, the headphone output is on the front), and a heater voltage toggle. The power supply case also has a ground lift switch for connecting the audio ground to the mains ground (not at all, through a ground lift circuit or directly—note that the power supply case is always connected to mains ground for safety reasons).




Before case perforations:



The large toggle on the power supply is the on/off switch, the first small one toggles power to the tubes (B+ and heaters, for testing and possible future use as a ±15 V supply for something else), and the second small toggle enables operation with higher current tube heaters by eliminating a resistor in the circuit (normally installed to keep the heater regulator from running quite as hot).

The text on the case is still handwritten, I don't know if I'll do something about that or just leave it.
post #3806 of 9591
Quote:
Originally Posted by Nebby View Post

swt61: Thanks! Coming from you it makes me feel like I did alright with the woodworking
I'd say a lot better than just alright!
post #3807 of 9591
hey now

here's an *application* of a build of mine:



I built a pimeta a few weeks ago, but just recently got a sandisk sansa e250 (and an 8gig msd card).

to customize this to the player I shortened the line-in cable and made it just long enough to fit the line-out of the sansa (phones out, actually). the whole package is pretty tidy in its current form. given that its a flash *card* based player, 'bolting' it to an amp isn't such a big deal - I'll copy songs over via a card reader when I pop the card out.

its running rockbox and so it plays flac files..

amp is a basic pimeta with TI buf chips inside. it will probably be another 6mos before I see more new BUF chips (sigh) but this unit has 3 of them
post #3808 of 9591
Quote:
Originally Posted by linuxworks View Post
hey now

here's an *application* of a build of mine:



I built a pimeta a few weeks ago, but just recently got a sandisk sansa e250 (and an 8gig msd card).

to customize this to the player I shortened the line-in cable and made it just long enough to fit the line-out of the sansa (phones out, actually). the whole package is pretty tidy in its current form. given that its a flash *card* based player, 'bolting' it to an amp isn't such a big deal - I'll copy songs over via a card reader when I pop the card out.

its running rockbox and so it plays flac files..

amp is a basic pimeta with TI buf chips inside. it will probably be another 6mos before I see more new BUF chips (sigh) but this unit has 3 of them
linuxworks -

Very impressive Pimeta (excellent photo + the photos in your sig link are great too)!!!

How do you like your Sansa???

I've got a Sansa Fuze (8g + 8g on µSD card), imho very impressive sound quality. I'm gathering parts for a Pimeta and look forward to the build. I'm thinking about building a LOD cable for my Fuze (cannibalizing a spare cable for the connector) to use with the Pimeta and a Mini³ that I recently built. I 'm hoping sound quality will be even better.

A couple more questions: what are the tie-wraps connecting through in the clear sansa case??? and, where did you find your BUF634s???

Thanks,
post #3809 of 9591
an RF remote controlled volume control (motor driver):









very simple circuit:






the small pc board and 4button remote come as a pre-built kit from ebay/china. I bought those a few years ago for another project (wireless focus/shutter control of my camera). the modules use 5vdc and give 4 TTL outputs that go to logic-TRUE on button press. real simple stuff.

on the test setup I have, there's an rca plug for +5vdc power and another for a motor pot (already installed in another piece of audio equip). I was 'testing' it all last nite while listening to music and trying the remote (such fun!)

later I plan to replace the RF remote and use an IR version. this was mostly a proof of concept for me, though - testing my h-bridge circuit and learning about the whole h-bridge motor control thing (which was brand new to me before I tried this project).
post #3810 of 9591
Quote:
Originally Posted by sandbasser View Post
linuxworks -

Very impressive Pimeta (excellent photo + the photos in your sig link are great too)!!!
thanks
Quote:
How do you like your Sansa???
ordered a few more. there are blow-outs on refurbs right now and they seem to be the v1 model which takes rockbox, so its the One To Get(tm)

when they are gone, I bet they are gone - so if you want one look for one in the next few weeks on sales (online). I check 'fatwallet' and 'slickdeals' (google for the real addr's) and there they announce which vendors have the best sales check it out.

Quote:
A couple more questions: what are the tie-wraps connecting through in the clear sansa case??? and, where did you find your BUF634s???

Thanks,
black wire-wraps. radio shack (etc) has them. they are plastic and not grippy, though but they do hold the unit in place until I can find better things for the job.

I got the bufs at digikey (not even knowing they were 'rare') and when I tried ordering again, the computer just laughed at me. which is strange since I don't even have my soundcard plugged in (LOL).

the buf replacements are the discrete diamond circuits. there is a group buy on boards going on now - check it out.
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Post pics of your builds....