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Bijou All Tube Futterman Headphone Amplifier - Page 155

post #2311 of 3977
2/22/09 at 3:33pm
I'm making slow progress on my Bijou. Started soldering components. I've received aluminum for my top/bottom plate and have my maple waiting to build my case. But I need a couple of resistors before I can finish the boards and I don't want to get junky ones from Radio Shack or pay shipping for just two resistors. I am trying to think of everything I can put into a Mouser order. So I've decided to do the 6H30 mod in the initial build. I want to mount a switch on the back panel to select between AUX Trans on-off so I can either run 6DJ8/6922 tubes or 6H30. Huskydawg used a 1.2 A transformer, but Hammond also makes a 1 amp which I presume would be better (even if it is on backorder at Mouser).

Will this transformer be good:
Hammond 166J6, single primary, 6.3 volt C.T., 1 A

166J6

Runeight, any problem with running 6H30 and 6N1P with Aux transformer and Regal's mod? I know when I have the Aux trans off I will need to run ECC99 and not 6N1P output tubes with Regal's mod. I will be using EZ81.

Also, are there any wrinkles here with doing Amphead's mod?

Thanks.
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post #2312 of 3977
2/22/09 at 3:38pm
For mounting the mofsets, in addition to the insulating sheets shouldn't there also be bushings for the screws and teflon/plastic washers for the nuts to completely isolate the mofsets from the heatsinks? My Glass Jar kit didn't come with all of these goodies (actually, there was just one bushing and I guess that's what it's for).

Thanks again,
Vic
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post #2313 of 3977
2/26/09 at 3:21am
Quote:
Originally Posted by Fast3d View Post
Has anyone bought anything from this site? I like their cases.
Audio Catalog
I have as well. Good, dependable service and lots of interesting goodies.
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post #2314 of 3977
2/26/09 at 12:51pm
Quote:
Originally Posted by V-DiV View Post
For mounting the mofsets, in addition to the insulating sheets shouldn't there also be bushings for the screws and teflon/plastic washers for the nuts to completely isolate the mofsets from the heatsinks? My Glass Jar kit didn't come with all of these goodies (actually, there was just one bushing and I guess that's what it's for).

Thanks again,
Vic
The shoulder washers go in the MOSFETs to isolate the screw from the tab.
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post #2315 of 3977
2/27/09 at 3:34am
I have not posted for a while so why not post an update. I have made good progress on my Bijou casework. My design is finalized and I hope to complete the fabrication by mid March. All the parts are in and I'll heat up the soldering iron soon afterwards.
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post #2316 of 3977
3/1/09 at 1:15pm
I had change the 3 Wima MKP with 3 Obligaddo caps on one channel.
For now no differences... perraps it will apear after some hours of running.

Next step, doing the same change on the other channel and change the attenuator.
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post #2317 of 3977
3/2/09 at 3:17am
Good to hear about your progress Balderon, Dantes!

Well no post in here from me lately, as I was on the mend. Stressed myself out just working on the bling for the front panel, and aggravated/developed my peptic ulcer(sorry a little off-topic). I had to just stop and leave it alone while drinking aloe vera juice and taking prilosec. Feeling much better now. ;-) Working on the Bijou Logo/Badge again. Edit: part of the Bijou badge involves work from a commercial stained glass artist, but no it isn't stained glass. He was having trouble achieving what I needed to have done and I cancelled the initial work and started in a new direction.
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post #2318 of 3977
3/7/09 at 6:50am
The logo involves a bit of aluminum cutting that would be better done with a small milling machine, but I haven't found the right one yet. I looked at a place locally called Scott Machinery in Sacramento, but his prices are a bit on the high side, especially considering the economy. Should have the badge done in a few more days, then pics.
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post #2319 of 3977
3/7/09 at 7:04am
* wait for the pics *

I had change the caps and obligaddo works fine

And the PS too... I do not change anything exept caps ans now with the ECC99 i have 250V without problem.

For me ECC99 with regal's mod is better than others configurations for this stage of the amp. The sound is clearer and have better dynamic.
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post #2320 of 3977
3/7/09 at 7:27am
* wait for the pics *

I had change the caps and obligaddo works fine

And the PS too... I do not change anything exept caps ans now with the ECC99 i have 250V without problem.

For me ECC99 with regal's mod is better than others configurations for this stage of the amp. The sound is clearer and have better dynamic.
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post #2321 of 3977
3/7/09 at 11:26am
I'm really close to pulling the trigger on purchasing this benchtop milling machine(SIEG X3). It will produce some awesome amplifier chassis. ;-) Thoughts?

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post #2322 of 3977
3/7/09 at 11:53am
amphead, what's the maximum X/Y excursion for the platter? what size shank does it accept?

I suppose owning a full-size Mill Rite or Bridgeport is out of the question? :P

I dream of having one of those babies in a garage one day.
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post #2323 of 3977
3/7/09 at 12:53pm
do it, you know that deep down it makes so much sense.
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post #2324 of 3977
3/7/09 at 1:42pm
Checked out the specs. Go for it! Let us know how you like it!
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post #2325 of 3977
3/7/09 at 2:52pm
I cheaped out with the Ryobi, but, it is way nicer than what I had before... if it makes sense, dew eet.
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