Bijou All Tube Futterman Headphone Amplifier - Page 236

That is very pretty - quite a nice aesthetic.

Nice job. IMO updating the 6DJ8's with Amperex Bugle Boy improves the mids and highs.

Quote:

Originally Posted by gabriel-dan 

Hi,

Here are a few pics of a Bijou I’ve just finished building today.

 

Only stock parts recommended by cavalliaudio site were used and no mods. I do not know if any of the mods will dramatically improve the sound, but as it is, this amp rocks. My HD650 never sounded so good, simply spectacular. I can't hear hiss or hum of any kind, the amp is dead quiet. 

 

Hey guys, 

This is my first post , as also my first attempt on a tube build.

Well everything is extremly clear to my, excpet one thing, Caps.

After reading all 236 pages of this thread my initial questions still remain.

1) are the wima caps so bad for sound?

2) if yes which brand of caps would help out? (I have seen so many different caps here that my mind is gonna explode:P)

3) shall i stick to the initial values or expreriment a bit?

:)

Welcome yiancar! Let me be the first to say "sorry for your wallet".

I recommend keeping with the original components and experimenting after your build is working. This would give your ears an opportunity to decide if a change was good or bad. Sometimes the simplest change has the greatest affect on the sound.

You mentioned this is your first attempt building a tube amp. I trust you are versed in the dangers and safety precautions when working with high voltage circuits?

Quote:

Originally Posted by yiancar 

Hey guys, 

 

This is my first post , as also my first attempt on a tube build.

Well everything is extremly clear to my, excpet one thing, Caps.

After reading all 236 pages of this thread my initial questions still remain.

1) are the wima caps so bad for sound?

2) if yes which brand of caps would help out? (I have seen so many different caps here that my mind is gonna explode:P)

3) shall i stick to the initial values or expreriment a bit?

 

:)

Hey bald,

Well yea this is my first tube amp but dont worry i have been around electronics for a long time in order to know the safety precautions for hv. :) Also my wallet can take a small hit for a nicer sound :P

I will take your suggestion, build the amp in its defaults and ill take it from there.

Btw am thinking of jumping into 6h30 as i heard they have a more worm sound. Also having the NFB vr to 0 ohms gives the same audiable results ( not humming or buzzing) as doing the removal mod?

It has been my experience humming or buzzing associated with the NFB pot may occur when the frame of the pot is not connected to circuit ground. I do not hear any noise regardless of the NFB setting.

I have not tried 6h30. I rolled the 6n6p but I prefer the ECC99

tnx :) am gonna order my kit and will post some pics :)

New 6N1P bias circuit with dc heater.

Why not use a LED or diode string to bias the gain tube? It would save you a lot of effort. 

guys ive been inspired by elektor of this month and am thinking of building a remote control for the amp,  is anyone interested so i can start designing? :)

gabriel-dan,

looks awesome!  enjoy. 

after nearly 2 years, and a few iterations, i've finally decided it's time to "finish"  my Bijou.  my custom face-plate from FPE shipped today.  "final" tweaks include: regal mod, cap multiplier, amphead mod, shunted PEC pot with TX2352 100K resistors and 150uF M-caps for output caps.  since i've never rolled any tube in the Bijou, i'm looking at getting a pair of of Amperex orange globes to replace the 6N1P.  are these reasonable - NOS and balnced?: http://www.nostubestore.com/2010/04/amperex-orange-globe-6dj8ecc88-holland.html

currently listening to some Jack Johnson with my Bijou and refurbished AKG K240 DF.  excellent stuff!

I would like to see some pictures of the finished product! Did you have troubles fitting in the M-Caps?

IMO the best prices can be found elsewhere and often fairly strong and matched tubes. I have several pairs of Bugle Boy 6DJ8 purchased on e-bay or audiogon and have been very happy with the buys.
 

I think the buy now price is worth a try

Quote:

Originally Posted by fishski13 

gabriel-dan,

looks awesome!  enjoy. 

 

after nearly 2 years, and a few iterations, i've finally decided it's time to "finish"  my Bijou.  my custom face-plate from FPE shipped today.  "final" tweaks include: regal mod, cap multiplier, amphead mod, shunted PEC pot with TX2352 100K resistors and 150uF M-caps for output caps.  since i've never rolled any tube in the Bijou, i'm looking at getting a pair of of Amperex orange globes to replace the 6N1P.  are these reasonable - NOS and balnced?: http://www.nostubestore.com/2010/04/amperex-orange-globe-6dj8ecc88-holland.html

 

currently listening to some Jack Johnson with my Bijou and refurbished AKG K240 DF.  excellent stuff!

Quote:

Originally Posted by balderon 

I would like to see some pictures of the finished product! Did you have troubles fitting in the M-Caps?

 

IMO the best prices can be found elsewhere and often fairly strong and matched tubes. I have several pairs of Bugle Boy 6DJ8 purchased on e-bay or audiogon and have been very happy with the buys.
 

I think the buy now price is worth a try

 

will do.  the chassis is sized for a balanced configuration, so fitting the the M-caps wasn't a problem.   

fishski

I've been running Bugle Boys for a quite while now & found them to give the best results of all the common front end tubes used in the Bijou.  Orange Globes or just about any of the NOS Amperex 6DJ8 variants should also be excellent.

Big M-caps are WTG.  I'm running 330uF's, which pose some mounting issues, but sound is very, very smooth.

Quote:

Originally Posted by rolotube 

fishski

 

I've been running Bugle Boys for a quite while now & found them to give the best results of all the common front end tubes used in the Bijou.  Orange Globes or just about any of the NOS Amperex 6DJ8 variants should also be excellent.

 

Big M-caps are WTG.  I'm running 330uF's, which pose some mounting issues, but sound is very, very smooth.

thanks.  i'm going to order up some tubes tonight.