Bijou All Tube Futterman Headphone Amplifier
May 12, 2010 at 5:17 AM Post #3,466 of 4,278
I cant remember the website but there was a company in states that would accept your parcels and forward it to you.. Very usefull in such times indeed..
 
May 12, 2010 at 11:26 AM Post #3,468 of 4,278
thanks for the link, but I would much rather pay a fellow headfi member who is willing to purchase the caps and send to me. 
 
May 17, 2010 at 8:23 AM Post #3,469 of 4,278
Seems like I have more parts than I need. Would there be any benefits using one PS per channel? I should be able to push the tubes workingpoint beyoond regals mod?
 
May 17, 2010 at 12:41 PM Post #3,471 of 4,278
Still searching for 100uf motor run capacitors.
Would these be suitable;
http://cgi.ebay.co.uk/2-Very-low-ESR-long-life-high-voltage-film-capacitors-/260592043151?cmd=ViewItem&pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item3cac7f048f
http://cgi.ebay.co.uk/MBGV-100uF-1000V-Paper-PIO-Capacitor-USED-/150442694490?cmd=ViewItem&pt=Vintage_Electronics_R2&hash=item230715575a
 
Not motor-run but film
Thanks
 
May 23, 2010 at 11:52 PM Post #3,472 of 4,278
Here are the motor-run capacitors:
 
http://cgi.ebay.com/New-100UF-100-UF-RUN-OIL-CAPACITORS-CAPACITOR-370V-/380236184432?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item5887d7bb70
 
I am not sure the shipping to UK is free or not.
 
 
 
May 24, 2010 at 8:27 AM Post #3,474 of 4,278

I wouldn't get humg up on them having to be ASC.  Just about any motor run 100uf oil cap should do.  I think ASC just got good press because they are the most readily available in the USA.  Also surplus sales of nevada has a nice 150uf oil motor run cap,  but don't know if they ship to the UK.
 
Quote:
thanks , but he does not ship to UK.



 
May 28, 2010 at 7:36 PM Post #3,475 of 4,278
Hey guys, so I'm looking to fill in my bijou with some good caps.  I have been looking at those oil run caps, but I just have one question.  if i parallel to say 300uf, I get a corner frequency of about 8.5 hz with my 62 ohm k701.  Do you think 300uf value will be adequate for lower end response?  I know you're not supposed to hear 8.5 hz but that's -3db corner freq,  I am just wondering if I will be missing any lower end by not using a higher value.  Btw I intend to use my 62ohm k701 and my 600ohm dt990s with this amp.  almost done buying all the parts for this baby..boutique caps are expensive!!:)
 
May 28, 2010 at 10:22 PM Post #3,476 of 4,278
Quote:
Hey guys, so I'm looking to fill in my bijou with some good caps.  I have been looking at those oil run caps, but I just have one question.  if i parallel to say 300uf, I get a corner frequency of about 8.5 hz with my 62 ohm k701.  Do you think 300uf value will be adequate for lower end response?  I know you're not supposed to hear 8.5 hz but that's -3db corner freq,  I am just wondering if I will be missing any lower end by not using a higher value.  Btw I intend to use my 62ohm k701 and my 600ohm dt990s with this amp.  almost done buying all the parts for this baby..boutique caps are expensive!!:)


Why not experiment with cheap electrolytic caps to determine what value you need? try 100uf, 220, 330 etc. A bunch of caps should not be prohibitively expensive and with care they can be reused in other projects elsewhere.
 
May 28, 2010 at 10:45 PM Post #3,477 of 4,278
well I was hoping to be able to omit C6 bypass cap, but I would probably have to buy one if I used electros for c5.  I am looking to spend my $ on film caps for c5, was just wondering if 300uf would cut it for my headphones.  I think I'll go ahead and order the oils runs for now  as 13 dollars a pop is fairly cheap for 100uf.
 
also can someone please clarify ampheads ps mod?  Should I go ahead and just do it even though I'm starting from scratch?  am kind of undecided if I should do this mod, as I intend to do regal, choke ps ,and no nfb.  Would amphead's mod be of any benefit? 
 
May 29, 2010 at 12:24 AM Post #3,478 of 4,278


Quote:
well I was hoping to be able to omit C6 bypass cap, but I would probably have to buy one if I used electros for c5.  I am looking to spend my $ on film caps for c5, was just wondering if 300uf would cut it for my headphones.  I think I'll go ahead and order the oils runs for now  as 13 dollars a pop is fairly cheap for 100uf.
 
also can someone please clarify ampheads ps mod?  Should I go ahead and just do it even though I'm starting from scratch?  am kind of undecided if I should do this mod, as I intend to do regal, choke ps ,and no nfb.  Would amphead's mod be of any benefit? 


nikon meant buy some different values and see at what value the bass becomes noticeably different to you and at what point it's worth it.  Since electros are very cheap you can grab these and test to figure out what value is the best compromise for you, then spend the $$$ on oil.  With that said, 300uf should be plenty for your K701
 
May 29, 2010 at 1:45 AM Post #3,479 of 4,278
indded, I was just trying to save my as much $ as I can. and i figure if the 300uf isnt adequate I can buy  additional oil caps.  for 6 100uf caps its about 80 dollars, vs 2x 430uf rubicon photoflash for 40.   I would prefer to spend the extra money on a quality potentiometer instead of additional caps.  its just my wallet is getting thin.:)  if i want to test caps it will have to be at a later stage because if I buy both now i wont have enough to get the additional parts to make a working bijou. ahh choices choices  Will hopefully get some build pics going here soon.
 

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