"The Wire" Ultra-High Performance Headphone Amplifier - PCB's - Page 165 - diyAudio
Go Back   Home > Forums > Amplifiers > Headphone Systems

Headphone Systems Everything to do with Headphones

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th November 2012, 12:51 PM   #1641
Can you say Audio?
diyAudio Member
 
Join Date: Aug 2011
Location: Aurora, Colorado
I rounded up another SE board, rebuilt it and stacked it to produce a balanced setup. Waiting on a new case, so here's the 'rough' of it :-)
Click the image to open in full size.
  Reply With Quote
Old 13th November 2012, 06:56 PM   #1642
Mull3t is offline Mull3t  United States
diyAudio Member
 
Join Date: Apr 2012
Location: Gamehendge
How'd you come across that SE board? Lucky you.

I'd love to be able to round up a BAL-BAL board. My ideal is to build a portable SE-BAL for my HiFiMAN RE272s.
  Reply With Quote
Old 13th November 2012, 07:55 PM   #1643
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
whats the point of the SE-BAL for portable? I could understand with a headphone that needs a lot of voltage swing perhaps, but its of no benefit otherwise.

It just adds more noise and doesnt cancel anything except the impossibly small amount of THD from the buffers themselves, it does not cancel anything from before the conversion, SE-BAL conversion for portable amps on head-fi is....

I just checked the spec on the RE272.... very high 103dB sensitivity and 20ohms, you would just be making them a more difficult effective impedance (10ohms), thats all, for no benefit. methinks you need a better dream =)

without a balanced source, the only benefit is higher voltage swing, which is unnecessary for your RE, it would actually be a disadvantage

the SE-SE has lower noise than any of the other wire headamps, the BAL-BAL has lower even order distortion IF fed with a balanced source, otherwise the SE-SE is the better amp

Last edited by qusp; 13th November 2012 at 08:05 PM.
  Reply With Quote
Old 13th November 2012, 08:39 PM   #1644
Can you say Audio?
diyAudio Member
 
Join Date: Aug 2011
Location: Aurora, Colorado
Quote:
Originally Posted by Mull3t View Post
How'd you come across that SE board? Lucky you.

I'd love to be able to round up a BAL-BAL board. My ideal is to build a portable SE-BAL for my HiFiMAN RE272s.
Well I hate to say it, but I purchased another builders completed amp, broke it down for parts, and rebuilt the board It certainly was the round about way, but hey - I was determined.
  Reply With Quote
Old 13th November 2012, 09:25 PM   #1645
opc is offline opc  Canada
diyAudio Member
 
opc's Avatar
 
Join Date: Oct 2004
Location: Ottawa, Ontario, Canada
@MisterRogers:

I would be very curious to hear what you think of the sound, especially compared to using just the SE version.

It's the only implementation of The Wire that I've never heard myself, and I regret not keeping enough boards to give it a try

Since both the LME49990 and the LME49600 can handle +/- 18V your setup could be run at that voltage and would provide the highest voltage swing of The Wire series. I'm not sure if it's of much use, but if you do have a pair of high impedance and low sensitivity drivers, then it would certainly be an advantage to have the extra swing.

If you pair the above setup driven directly off the NTD1 I just shipped you, I think you'll be a very happy camper. I don't know that you could have a better front end for driving headphones.

Post up a pic when you get it all cased up!

Cheers,
Owen
  Reply With Quote
Old 14th November 2012, 01:37 PM   #1646
Can you say Audio?
diyAudio Member
 
Join Date: Aug 2011
Location: Aurora, Colorado
Owen; pairing the balanced SE/SE/SE/SE wire with NTD1 is exactly what I've been working towards for quite awhile :-) I believe you're right - I expect it to be a chain I'll rest with for quite awhile (and I don't rest easy).

I'm driving HE-5's with a 4x gain. They're not very efficient but 50Ohms impedance; they may benefit a bit from the additional 'v'. Sonically as you'd imagine, the sound is more of the same. It has all of the characteristics of the SE/SE with more swing. It's dead quiet, fast, flat, dynamic and detailed. Yea, I like :-)

I'll be sure to post pictures when the case arrives. I was trying to fit it in the SE case I had, but it's not quite gonna fit.
  Reply With Quote
Old 14th November 2012, 02:02 PM   #1647
opc is offline opc  Canada
diyAudio Member
 
opc's Avatar
 
Join Date: Oct 2004
Location: Ottawa, Ontario, Canada
Quote:
Originally Posted by MisterRogers View Post
Owen; pairing the balanced SE/SE/SE/SE wire with NTD1 is exactly what I've been working towards for quite awhile :-) I believe you're right - I expect it to be a chain I'll rest with for quite awhile (and I don't rest easy).

I'm driving HE-5's with a 4x gain. They're not very efficient but 50Ohms impedance; they may benefit a bit from the additional 'v'. Sonically as you'd imagine, the sound is more of the same. It has all of the characteristics of the SE/SE with more swing. It's dead quiet, fast, flat, dynamic and detailed. Yea, I like :-)

I'll be sure to post pictures when the case arrives. I was trying to fit it in the SE case I had, but it's not quite gonna fit.
Great stuff! I really like that setup. I might see if I have enough spare SE-SE boards around to replicate it and try it out with the HE-6. I think I held back a few rework boards I might be able to salvage

Looking forward to pics!

As a side note, has the large parcel for the NTD1 arrived yet? It should be there today.

Cheers,
Owen
  Reply With Quote
Old 14th November 2012, 02:04 PM   #1648
Can you say Audio?
diyAudio Member
 
Join Date: Aug 2011
Location: Aurora, Colorado
Not yet on the package; hoping for today. Well if you can dig up the boards, I think you'll be pleased. :-)
  Reply With Quote
Old 14th November 2012, 10:03 PM   #1649
jdkJake is offline jdkJake  United States
diyAudio Member
 
Join Date: Jul 2010
Location: Seminole, FL
Okay, I'll bite.

What is an NTD1?
__________________
-- jk --
  Reply With Quote
Old 14th November 2012, 10:38 PM   #1650
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
Quote:
Originally Posted by jdkJake View Post
Okay, I'll bite.

What is an NTD1?
this

New Take on the Passlabs D1

an OTT 50W Class A IV stage

will upload some more recent pics when I wake up, as well as some of my portable BII->Bal-Bal I took if anyone is interested
Attached Images
File Type: jpg D1 testing 11 forum size.jpg (238.5 KB, 295 views)
File Type: jpg D1 testing 10 forum size.jpg (187.9 KB, 291 views)
File Type: jpg ackodac teflon so close.jpg (297.8 KB, 290 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which Pass Aleph diy board for "no-cost-object" headphone amplifier? Hammerklavier Headphone Systems 43 7th August 2010 03:35 PM
Improvments to "Tube Headphone Amplifier/Preamp with Relay-Based Input and Power Swi" kipman725 Headphone Systems 4 17th August 2009 06:12 PM
Project 11.1 from Slone "High-Power Amplifier" Book Karl71 Solid State 46 6th October 2008 03:47 AM
The "Freebird" ultra clean ultra simple preamp design Russ White Chip Amps 87 11th August 2008 09:28 AM
My A.N.T. "Amber" headphone amplifier x-pro Headphone Systems 8 1st October 2007 08:47 AM


New To Site? Need Help?

All times are GMT. The time now is 04:04 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2