"The Wire" Ultra-High Performance Headphone Amplifier - PCB's - Page 49 - 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 3rd June 2011, 03:45 AM   #481
jdkJake is offline jdkJake  United States
diyAudio Member
 
Join Date: Jul 2010
Location: Seminole, FL
Quote:
Originally Posted by idjoel2000 View Post
thanks, jdkJake..

it'd be great if you could compare it to other branded high end amplifiers like gilmore, schiit, wooaudio, or any other amps
Well, sorry, but that will not happen. I am a DIY amp kind of guy. Mostly tube hybrids, no commercial gear.

This is also my lone SS amp at the moment (hence my reason to build it). So, I am afraid I do not have a reference for you.
__________________
-- jk --
  Reply With Quote
Old 3rd June 2011, 07:54 AM   #482
qusp is offline qusp  Australia
diyAudio Member
 
qusp's Avatar
 
Join Date: Oct 2009
Location: Brisbane, Australia
Quote:
Originally Posted by idjoel2000 View Post
@qusp: thank you for your concern

@opc: owen, for the BAL-BAL version, can you design the output to use 6 poles balanced jack? (+, -, ground, on each channel)

that way, i can easily turn the balanced output to single ended using converter whenever i want
there is not going to be an output jack at all and i would hope if there was it wouldnt be one that nobody uses. i suggested one that i'm using, but i never expected it to happen and it doesnt matter because a header is fine. just wire ground along with the poles to the output jack to suit yourself like everyone else will be doing. 1 strip of 6, or 2 strips of 3 x 2.54mm headers is fine is it not?

yeah i know your pain, we only really have farnell local as well, although there is a mouser australia site, the warehouses are not here, so international shipping is the only option until the 200 dollar free shipping amount is reached. so myself and a few other aussie members often throw in together for digikey and mouser orders. it really does turn out cheaper except for tiny orders.

i also do not like their shipping policy. its free which is cool, but you pay for it with the prices, the bad thing is that if they have to get stock in from another country they will ship what they have first and then as other parts come in they come. so i have sometimes received 4 separate express shipments in the space of a week, sometimes with a lone strip of parts worth a dollar. the amount of resources, packing materials, fossil fuels they waste doing this is appalling and even if requested they will not do it any other way.
  Reply With Quote
Old 3rd June 2011, 02:19 PM   #483
MrSlim is offline MrSlim  Canada
diyAudio Member
 
Join Date: Jun 2009
Location: Ottawa, Ontario
Blog Entries: 2
Owen, are you planning on making the SE-SE boards/kits regardless of the number of requests you get? Since I expect I wont be getting a balanced output source any time soon, I was debating putting my Bal-SE Rev1 kit up for sale and just getting a couple of SE-SE kits (or a kit and set of boards) to build when I have time (the first one is still in the build queue, behind a B22 I'm building for someone).
  Reply With Quote
Old 3rd June 2011, 03:53 PM   #484
diyAudio Member
 
Join Date: Feb 2010
Quote:
Originally Posted by qusp View Post
there is not going to be an output jack at all and i would hope if there was it wouldnt be one that nobody uses. i suggested one that i'm using, but i never expected it to happen and it doesnt matter because a header is fine. just wire ground along with the poles to the output jack to suit yourself like everyone else will be doing. 1 strip of 6, or 2 strips of 3 x 2.54mm headers is fine is it not?

yeah i know your pain, we only really have farnell local as well, although there is a mouser australia site, the warehouses are not here, so international shipping is the only option until the 200 dollar free shipping amount is reached. so myself and a few other aussie members often throw in together for digikey and mouser orders. it really does turn out cheaper except for tiny orders.

i also do not like their shipping policy. its free which is cool, but you pay for it with the prices, the bad thing is that if they have to get stock in from another country they will ship what they have first and then as other parts come in they come. so i have sometimes received 4 separate express shipments in the space of a week, sometimes with a lone strip of parts worth a dollar. the amount of resources, packing materials, fossil fuels they waste doing this is appalling and even if requested they will not do it any other way.
i wasn't really talking about the output jack itself, but the pins. i did mention in my previous post about output pin having +, -, and ground poles in each channel. if the design provide these 6 poles in the output, i will be more than happy. i won't even use the on board jack if they were provided in the kit, it's too troublesome to adjust the custom case with the on board output jack

well, lucky me that i haven't felt that way about farnell. they save me the cost to go to actual shop, not to mention time

but now that you pointed those things out, well, i don't know how to respond to that
  Reply With Quote
Old 3rd June 2011, 06:47 PM   #485
ilardi is offline ilardi  United States
diyAudio Member
 
Join Date: Mar 2006
Location: Westchester County, NY
I would be interested in the SE-SE PCB. Possibly the kit too (I started to collect parts for the National reference design-but I am sure I can find something else for them to do).
  Reply With Quote
Old 3rd June 2011, 11:04 PM   #486
agdr is offline agdr  United States
diyAudio Member
 
agdr's Avatar
 
Join Date: Sep 2010
Quote:
Originally Posted by ilardi View Post
I would be interested in the SE-SE PCB. Possibly the kit too (I started to collect parts for the National reference design-but I am sure I can find something else for them to do).
FWIW, I think the dc servo design in that National reference design is bad. You would probably have better results with "the wire". See opc's comment here

http://www.diyaudio.com/forums/headp...ml#post2527868

"...I would really suggest steering clear of the DC servo circuit used on the reference national design. It's a poor implementation, and it actually has significantly higher DC offset at the output than a properly implemented DC coupled circuit."

I would agree at this point. I've bread boarded that circuit and had less DC offset with the servo removed. I've seen others post similar experiences. I also tried to SPICE just that servo portion and never could get it to work well.

Seems that people who have built "the wire" have had very little DC output offset from the various reports in this thread, which I would attribute to high accuracy resistors, good chips, and opc's good layout.

Just my two cents, your mileage may vary.

Last edited by agdr; 3rd June 2011 at 11:10 PM.
  Reply With Quote
Old 3rd June 2011, 11:37 PM   #487
ilardi is offline ilardi  United States
diyAudio Member
 
Join Date: Mar 2006
Location: Westchester County, NY
OK. Then I am glad I haven't built it yet. Even more reason to opt for "the Wire."
  Reply With Quote
Old 4th June 2011, 06:08 AM   #488
diyAudio Member
 
GTrenchev's Avatar
 
Join Date: Feb 2011
Location: Bulgaria
Could someone with a good PC interface take a RMAA test with 32ohm headphones?
  Reply With Quote
Old 4th June 2011, 06:26 AM   #489
MaHo is offline MaHo  Slovakia
diyAudio Member
 
MaHo's Avatar
 
Join Date: May 2011
Location: Banska Bystrica, Slovakia
Hi Owen

I need 1 full kit SE-SE + PSU

Thanks
  Reply With Quote
Old 4th June 2011, 01:36 PM   #490
opc is offline opc  Canada
diyAudio Member
 
opc's Avatar
 
Join Date: Oct 2004
Location: Ottawa, Ontario, Canada
Hi Guys,

The past few days have been pretty busy, but I have an 8 hour flight ahead of me so I plan on finishing up all the layout and routing.

I'll post the results later this evening for comments along with an updated list of people's preliminary orders.

On another note, I will likely be offering full kits this time around sine there are no connectors. In other words, I'll be including everything needed to fully populate the boards.

Mr. Slim:

I will definitely be proceeding with all three desings regardless of the numbers of people interested. I'm going to panelize the different amps onto a common board, so I can put say four of one kind, and two of another to help account for the different demand.

I'll also make extras of each type since I'm sure there will be latecomers.

Cheers,
Owen
  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 02:47 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