Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Bijou All Tube Futterman Headphone Amplifier
New Posts  All Forums:Forum Nav:

Bijou All Tube Futterman Headphone Amplifier - Page 13

post #181 of 3981
3/5/08 at 3:04pm
Quote:
Originally Posted by amphead View Post
Thanks Bhjazz, are you trying to get the Bijou done in time for the Seattle meet? That should get a good turnout. If I could swing it, I would visit family there and go to the show, but alas it just is not in the cards. ;-)
Nope. I actually just got my Ck2III done a couple of weeks ago so that'll be my debut piece for the show. Would I like to bring both? Hell yeah! I just don't think I could get this one done in time. So much to build, so little time.

Family up here? Excellent. Just know you are always welcome to attend a meet up here. Any time!
Reply
post #182 of 3981
3/6/08 at 3:32am
All boards populated and Cocobolo received 3 coats of Lacquer today. I have to wait about 3 days before I start polishing the finish up to a mirror. 370DAX, EZ80, Illuminated power button, and locking input jack arrive tommorrow, just leaving the RK27 50K to arrive in a few more days.

Reply
post #183 of 3981
3/6/08 at 3:35am
Thread Starter 
That is gorgeous wood, nicely done ..dB
Reply
post #184 of 3981
3/6/08 at 5:27am
Thanks dB, the hardest part when working with lacquer, is to keep from trying to polish the finish prematurely. If you work too soon on it, you get some slightly sticky goo under the top of the finish. If you wait at least 3 days the solvent has evaporated enough from the lacquer, that it is hard. Then you start with 600 grit paper and wet sand up to 1200 paper. This is followed by Meguiars Mirror Glaze used on automotive paint. Then this is just carefully buffed by hand up to a mirror sheen with a soft cotton cloth. This is the way guitars are often finished, which is my other hobby. ;-)
Reply
post #185 of 3981
3/7/08 at 8:04am
Installed the 370DAX on to the top plate. Now the amp is getting heavy. ;-) Will wire up the Illuminated switch tommorrow and install the iec plug on the back of the case. The led in the illuminated switch, requires a 12 volt powers source.
Reply
post #186 of 3981
3/7/08 at 5:08pm
Here are some other options for the switches.
3,Stainless DPDT OFF/ON White Led Car switch 12V W22ZE - eBay (item 120228264165 end time Mar-07-08 20:41:50 PST)
Reply
post #187 of 3981
3/8/08 at 8:43am
Nice switch Listen2this1.

Today I mounted the iec plug by cutting a rectangular opening in the back panel. Then I brought the front panel up to a mirror finish 1 day early. I couldn't wait to see it and it came out with a 100% mirror finish after wet sanding up to 1200 paper and then repeatedly polishing with Meguiars Mirror Glaze, with a cotton cloth. I will post a pic after the front panel is populated. ;-)
Reply
post #188 of 3981
3/8/08 at 5:20pm
amphead: it looks to me like your output film caps are metallised polyester (MKT). I would suggest at least metallised polypropylene (MKP), paper in oil (PIO), or even Teflon.

For the price, some Wima or Vishay Roederstein MKP would be best.
Reply
post #189 of 3981
3/8/08 at 11:43pm
Yeah, they are Vishay Roederstein MKT. I will replace those with something better, when I can. I misread the description when those were ordered from Mouser.

Today I installed the illuminated power switch and should have the locking input jack installed tonight.
Reply
post #190 of 3981
3/10/08 at 7:58am
Purchased the Wima Polypropylene caps MKP and they should be here soon. Polyester MKT just won't sound good. ;-)
Also I ordered 140 feet of black 22awg teflon 600v milspec wire, to go with the 40 feet of green that I currently have. That should be here soon too. Last night I had a rough time installing the Neutrik jack on the front panel. I had not measured correctly, so that I had to file down my aircraft aluminum frame in that spot. After a frustrating time, the jack finally was flush to the front panel. So this is a pic of the amp now.

Reply
post #191 of 3981
3/10/08 at 11:36am

What else needed?

Very nice work amphead.

Question? I just got my kit from Jeff and I'm wondering what else I need? I'm pretty sure a transformer. Also a case. Anything else? Anybody have part #'s for mouser of digikey? Thanks

James
Reply
post #192 of 3981
3/10/08 at 7:00pm
For a transformer, you could purchase a 270DAX from Angela Instruments.

You will also need a set of rca jacks, a 1/4" headphone jack (Neutrik makes a nice one), mounting hardware for the pcb boards and some suitable wire. I would also recommend an IEC power jack and switch as well as a couple of knobs for the volume and NFB pots. If you use the IEC jack then you can use any home computer power supply cord to plug it in.

I used a terminal strip to wire mine but Alex has instructions on his site to wire the Bijou without one.
Reply
post #193 of 3981
3/11/08 at 1:32am
Amphead, you've put so much effort into the amp case already, why not buy a forstner bit and counter-bore those two knobs. It would really step up the aesthetics another notch.
Reply
post #194 of 3981
3/11/08 at 2:58am
You must be telepathic Mazuki, because the countersunk knobs is exactly what I had in mind. I want to hear the Bijou fairly soon though, so I will complete the build first. Also, if you notice the top edge of the amp has not been worked on yet, and there will be a facade to clean those edges visually. I have worked out a top design for the amp, but will do that when the amp is fully functional. thanks
Reply
post #195 of 3981
3/11/08 at 10:20am
Quote:
Originally Posted by willisv View Post
For a transformer, you could purchase a 270DAX from Angela Instruments.

You will also need a set of rca jacks, a 1/4" headphone jack (Neutrik makes a nice one), mounting hardware for the pcb boards and some suitable wire. I would also recommend an IEC power jack and switch as well as a couple of knobs for the volume and NFB pots. If you use the IEC jack then you can use any home computer power supply cord to plug it in.

I used a terminal strip to wire mine but Alex has instructions on his site to wire the Bijou without one.
thanks willisv, I have jacks, knobs, plenty of navships wire.

I'll need to order mounting hardware & case, power jack, and transformer.

The 270DAX is the recommended power supply? This is a hammond right?

How about a case's Any rec's on them?


Thanks again.
James
Reply
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Misc.-Category Forums › DIY (Do-It-Yourself) Discussions › Bijou All Tube Futterman Headphone Amplifier