Speaker amps for headphones

@ Flysweep:  I'm just going to call Jan tomorrow and ask him, since I would prefer to avoid opening the boxes.
 
@Wuwhere:  That is a very nice-looking resistor, but I don't think I'd pay extra for something to look good inside a sealed box.  Of course, the Duelunds are >$50 apiece, so I'm thinking maybe they should look like artistic masterpieces...
Quote:
Originally Posted by gary in md
@ Flysweep:  I'm just going to call Jan tomorrow and ask him, since I would prefer to avoid opening the boxes.
 
@Wuwhere:  That is a very nice-looking resistor, but I don't think I'd pay extra for something to look good inside a sealed box.  Of course, the Duelunds are >$50 apiece, so I'm thinking maybe they should look like artistic masterpieces...
Artistic masterpiece you say ...
 
Speaker amps for headphones
 
Yes that is a Faber Castell pencil lead Speaker amps for headphones
Quote:
Originally Posted by preproman
 
I wanted to hear your impressions of them compared to the HE-6.  
 
I'm on the HD800 thread and MH called the HE-6 muddy compared to the HD800Speaker amps for headphones  I called BS.  there's no way in the world IMO anyway..
 
That is an entertaining thread indeed.
Quote:
Originally Posted by khaine1711
Artistic masterpiece you say ...
 
Speaker amps for headphones
 
Yes that is a Faber Castell pencil lead Speaker amps for headphones
 
Make your own...
 
http://www.troelsgravesen.dk/graphite.htm
 
Mike
Quote:
Originally Posted by zilch0md
 
Make your own...
 
http://www.troelsgravesen.dk/graphite.htm
 
Mike
Duelund is charging quite reasonably for those resistors - took some efforts to make one. The main complaint is that graphite resistor (the Duelund at least) are quite sensitive to heat. The one pictured was used in a power amp. For our purposes I think they'll be fine actually.
 
To me I don't think the parallel resistors have miniscule (if at all) effect on sounds - I tried a bunch of M-resist resistors, together with the Duelund and our usually suspect - Mills. If I were to rely on my unreliably aural memory 2-3 mins after each resistor swap - I'd say the Duelund is slightly clearer than the Mills and M-Resist; but then it could be placebo or my brain playing tricks. At the end of the day, I kept the Mills, and a pair of M-resist in cement when I need to bias.
 
On the topic of resistor, there's also this
 
Speaker amps for headphones
 
Speaker amps for headphones
 
Not sure what to think of those resistors 
Quote:
Originally Posted by khaine1711
[snip]
 
On the topic of resistor, there's also this
 
Speaker amps for headphones
 
Speaker amps for headphones
 
Not sure what to think of those resistors 
 
Oh yeah, I've seen those before - they smell bad when they get hot.  They're called Mummysistors.  Speaker amps for headphones
Quote:
Originally Posted by zilch0md
 
Oh yeah, I've seen those before - they smell bad when they get hot.  They're called Mummysistors.  Speaker amps for headphones

Would that then make the Mummybrotho a Cap?
They look like a stripped apart MKP but mummified. 
Okay folks, I talked to Jan about which resistors were in which box.  And the winner is:
 
Drum roll..............................................................................................
 
The cheap concrete resistors.
 
BWAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAH.
 
Well, I certainly learned something about resistors and matching them with amps didn't I?
 
Anybody interested in buying a nearly-new resistor box for balanced headphone cables with very nice Mills 1% resistors in it please PM me.  I will sell it for the $100 Jan charged me to build the box, thus I will be eating the $30 cost of the resistors.  For those who have a more analytical, dry-sounding amp, this box might be a good match.  Unfortunately, it doesn't match as well with the Millenia, which starts out as a warm-sounding amp, and doesn't need any help in that area from the resistors.
 
Damn, I just can't stop laughing...
Can you post a few pictures of the box Gary?
So Gary,
 
I'm confused and should probably back up and re-read some of your posts, but I'll just go on memory, instead...  
 
You had purchased the Mills resistors in hopes of eliminating a noise problem you were having with the original box - the one equipped with concrete resistors.
 
So you sent Jan the Mills resistors, he built you a new box, then he returned both boxes, having proclaimed there was nothing wrong with the original box.  He marked them so that he could tell which was which, but he didn't tell you which was the new box with the Mills resistors vs. the original box with concrete resistors. 
 
Then you tested the two boxes (not knowing which was which) and you concluded that your favorite is a box that Jan is now saying was your original box.
 
What happened to the noise problem you had originally experienced with the original box?  
 
Apparently the Mills resistors didn't fix the problem - they just made for a warmer sound.
 
Thanks,
 
Mike
Speaker amps for headphones
Speaker amps for headphones
 
There you go!  Dimensions are 2.5" x 5" x 1.5" not including the binding posts.  Including the posts, the 1.5" turns into ~2.5".  Obviously it isn't a beautiful work of art but it is very solid and it works.
Quote:
Originally Posted by zilch0md
So Gary,
 
I'm confused and should probably back up and re-read some of your posts, but I'll just go on memory, instead...  
 
You had purchased the Mills resistors in hopes of eliminating a noise problem you were having with the original box - the one equipped with concrete resistors.
 
So you sent Jan the Mills resistors, he built you a new box, then he returned both boxes, having proclaimed there was nothing wrong with the original box.  He marked them so that he could tell which was which, but he didn't tell you which was the new box with the Mills resistors vs. the original box with concrete resistors. 
 
Then you tested the two boxes (not knowing which was which) and you concluded that your favorite is a box that Jan is now saying was your original box.
 
What happened to the noise problem you had originally experienced with the original box?  
 
Apparently the Mills resistors didn't fix the problem - they just made for a warmer sound.
 
Thanks,
 
Mike

Mike:
 
Not quite.  The original box that Jan sent me was set up for SE connection, not balanced (XLR), and I was using a balanced connection, so I was getting noise.  I sent that box back, and he was going to send me back a box set up for balanced connection at no charge (except the couple of bucks to send the original box back... it was really light). 
 
After all of the discussion of resistors on this thread, I figured what the heck-ll, as long as you are going to send me a new box, why not do another comparison... identical boxes, except one would have the cheap resistors he normally uses, the other would have some more expensive "audiophile" low-inductance resistors.  He agreed to sell me a 2nd box with whatever resistors I wanted... at the regular cost of the box ($100), plus I would supply the resistors.  Given that most of the cost of the boxes is in labor and all of the other parts (the resistors cost him about $1), I agreed to pay him the $100.
 
After looking hard at Duelunds, I decided they were too expensive, so I bought 3 pairs of Mills resistors for ~$30 shipped, and had them sent to Jan.  Note that the design only calls for 2 sets (4 total), but at $4.25 each (no extra for shipping) I wanted a backup pair in case there were any bad ones, since I didn't want to have to wait for any replacements to be shipped. 
 
Our agreement was that Jan would mark the boxes so that he knew which was which, but I would not know.  I did not open the boxes until today, after I had done the comparison Friday and Saturday, posted my review above, then had called him and had learned from him which was which.  I then opened the box I called "Box 1" just to confirm that my understanding of his markings and his memory were both correct, and there were the little orange Mills resistors... Speaker amps for headphonesSpeaker amps for headphonesSpeaker amps for headphones
 
So now, instead of my original box, which was not the correct one for my setup, I have a box with the same cheap resistors, but the correct circuit, and it sounds great.  I also have the Mills Box, which is the identical setup for balanced headphones, except using Mills resistors.  The Mills box sounds warmer and not quite as clear through the low-mids as the box with the cheap resistors.  My view is that the Mills resistor is just not a good match with the Millenia, which is already a pretty warm-sounding amp.  Added together, they provide a tube-amp-like sound which is not really my preference with the LCD-3s, but for somebody who wants to warm up a speaker-amp and headphone combination that is on the dry/analytical side, the Mills resistors might be perfect. 
 
Make sense?
Haha...I knew i should have let you explain right from the beginning instead of butting in. 
 
TBH I was only curious about the resistance but if what you say about Jan's skills is correct then I don't think there would be differences in impedance between channels for the 2 boxes. Or it would be negligible. Not entirely sure why I asked - since Jan would have checked before sending it out.
Gary, thanks for your experiment, very interesting. Though I didn't post it, my guess was box # 1 was Mills based on your description.
 
I think preproman would like to see the inside too and so do I, if possible.
Thanks for the detailed recap Gary - and your valiant attempt nk77.  Speaker amps for headphones
 
Mike
Quote:
Originally Posted by wuwhere
Gary, thanks for your experiment, very interesting. Though I didn't post it, my guess was box # 1 was Mills based on your description.
 
I think preproman would like to see the inside too and so do I, if possible.

Okay, but if a leprechaun escapes it's all your fault...
Speaker amps for headphones
 
 
Oh Schiit!  The little buggers escaped!!!!!
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