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Bijou All Tube Futterman Headphone Amplifier - Page 257

post #3841 of 4164

I'm here.  I need mounting screws for the mosfets.  I am also at a holding point because of the case.  I'm not sure i'd have time to build it.  I wonder if someone would be willing to build a case for me.  I'd be willing to pay, obviously. biggrin.gif

post #3842 of 4164
Quote:
Originally Posted by V-DiV View Post

 

My Bijou is all cleaned up now.  Here are some pictures.

 

  - Regal's and Amphead's Mods

  - Sonicaps at C2 & C6
  - Rubicons (Thanks Pabbi) at C5 (waiting for motor run oil caps)

  - DACT stepped attenuator

  - auxiliary heater transformer for tube rolling (not connected yet)

  - shielded wiring for signal, heaters, grounds

 

The amp is dead quiet at all NFB settings at max volume.  Sounds great too.

My casework is not up to Holland/zkool standards, but the design is reasonably nice, I think.

Thanks again to Alex, Regal, Pabbi, and all who helped out with my many questions.

 

DSC00257.jpg DSC00255.jpg

DSC00260.jpg


Nice build V-DiV. The sound will only get better as the components settle in during the breakin period.

post #3843 of 4164

Thanks Balderon.  The sound is noticeably improving.  I'm very happy listening to my HD800s through my Bijou.  How does your Bijou compare to your WA6.  I've always been intrigued by the Woo amps and wonder how the transformer coupled amps sound compared to the Bijou with its output caps.

post #3844 of 4164

nice build m46c149 and V-DiV.  V-DiV, where did you get the case, or did you make the case yourself?  It reminds me of the Decware Zen amps.  I could have sworn I posted this before, but I guess not since I can't find this, lol.

post #3845 of 4164
Quote:
Originally Posted by holland View Post

nice build m46c149 and V-DiV.  V-DiV, where did you get the case, or did you make the case yourself?  It reminds me of the Decware Zen amps.  I could have sworn I posted this before, but I guess not since I can't find this, lol.


Thanks Holland.  The case is completely hand-made by me.  I cut and drilled the top and bottom aluminum plates from a sheet I got from an online supplier.  The grid in the top plate is aluminum sheeting for radiator (heater) covers from the local home/building supply center (Home Depot).  The front and back steel plates are also cut from a larger sheet I bought from Home Depot.  The wood sides are pre-finished maple baseboard that I had left over from some work I did in my kitchen. 

post #3846 of 4164
Quote:
Originally Posted by Coupe View Post

I'm here.  I need mounting screws for the mosfets.  I am also at a holding point because of the case.  I'm not sure i'd have time to build it.  I wonder if someone would be willing to build a case for me.  I'd be willing to pay, obviously. biggrin.gif



What type case do you want, and what size?

post #3847 of 4164
Quote:
Originally Posted by V-DiV View Post

Thanks Balderon.  The sound is noticeably improving.  I'm very happy listening to my HD800s through my Bijou.  How does your Bijou compare to your WA6.  I've always been intrigued by the Woo amps and wonder how the transformer coupled amps sound compared to the Bijou with its output caps.

 

The WA6 has greater detail, deeper bass, and wider sound stage. I am not saying by any means the Bijou is a slouch! Much of the differences can be attributed to the expensive glass (EML 274b rectifier and TungSol 6SN7GT Round Plate driver tubes) I have in the WA6. Many agree, as I do, this combination is superb. I built my Bijou using the huge 330uF output film caps. Using these film caps has improved the sound but due to the smaller capacitance the bass is slightly rolled off as compared to the WA6. I often listen to the Bijou with my Denon D7000's or LCD-1's. Both are a great pairings. As expected the HD-800's sound wonderful on either the Bijou or WA6. Of course this is my opinion and results may vary. smile.gif

post #3848 of 4164
Quote:
Originally Posted by balderon View Post

The WA6 has greater detail, deeper bass, and wider sound stage. I am not saying by any means the Bijou is a slouch! Much of the differences can be attributed to the expensive glass (EML 274b rectifier and TungSol 6SN7GT Round Plate driver tubes) I have in the WA6. Many agree, as I do, this combination is superb. I built my Bijou using the huge 330uF output film caps. Using these film caps has improved the sound but due to the smaller capacitance the bass is slightly rolled off as compared to the WA6. I often listen to the Bijou with my Denon D7000's or LCD-1's. Both are a great pairings. As expected the HD-800's sound wonderful on either the Bijou or WA6. Of course this is my opinion and results may vary. smile.gif


Thanks for the comments on the WA6.  Now I want a Woo even more.  I could see that the Bijou bass would roll off with the low impedance Denon and Audeze.  But it shouldn't with the HD800.  I have some 100uF motor run oil caps coming that I want to try with my HD800.  I want to install with a switch or binding post so I can swap the 410uF Rubicons or the motor run caps in and out depending on whether I want to listen with low or high impedance headphones.

post #3849 of 4164
Quote:
Originally Posted by pabbi1 View Post





What type case do you want, and what size?


Hey pabbi!  Great to talk to you again.  Sorry for the delay.  I will have time this weekend and I hope to take your suggestions!  I have been thinking about building a case ready to fit the balanced Bijou!  Your build in this thread has had much influence. biggrin.gif

post #3850 of 4164

finally, the amp is done :)

sorry for the fuzzy pics, ill upload some better ones when the psu is also done

 

IMG_20110309_161117.jpg

 

IMG_20110310_165024.jpg

 

IMG_20110310_165034.jpg

 

IMG_20110310_165050.jpg

 

 

post #3851 of 4164

You should untwist the wires going to the tube sockets. It may look untidy but with the wires twisted together like they are you are coupling any noise on the heater wires with the signal and all the other junk and increasing parasitic capacitances. 

post #3852 of 4164

i thought of that but i was not actually sure. just untwisting the wires would do the trick ?:)

post #3853 of 4164

Hi

Just finished my Bijou, love the sound. Been reading this thread for over a month, got the kit from Glass about 3 weeks ago. Thank you for a great design and all the info.  I'm new to the world of headphones so I'm using ATH-M50  32ohm. The amp is mostly stock (for now). I would love to hear it on some different - better phones but one thing at a time.Bijou-done.jpg

post #3854 of 4164

I see extra tubes in there...what are they for?

post #3855 of 4164

Hi

Will someone plz tell me a good place/shop to order a case for this Bijou amp ,

I live in Denmark, so will be good a place in EU,

and maybe also an pic/number oa

 

Thanx

( one day my is ready too happy_face1.gif

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