Precission EQ of Headphones - 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 1st December 2014, 12:16 AM   #1
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
Default Precission EQ of Headphones

Lately i worked quite a bit on EQ Headphones.
Even the best of them like the Audeze LCD-X have audible flaws.
Arnie Nudell identified some of them them in his review for Absolute Sound but my son an i found that this is only part of the truth.
  Reply With Quote
Old 1st December 2014, 12:21 AM   #2
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
Audeze LCD-X Headphones | The Absolute Sound
  Reply With Quote
Old 1st December 2014, 12:22 AM   #3
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
The response measured with a Neumann artificial head.
Attached Images
File Type: png Audeze LCD-X.png (90.5 KB, 158 views)
  Reply With Quote
Old 1st December 2014, 12:24 AM   #4
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
We are using this equalizer :ART Pro Audio
  Reply With Quote
Old 1st December 2014, 12:52 AM   #5
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
I build this headphone amp.
With the Audeze it produces 110dB with 0.1% distortion.
This comes mostly from the diamond buffer.
This is not word clas but OK.
Attached Images
File Type: jpg Caveman as build.jpg (62.8 KB, 155 views)
  Reply With Quote
Old 1st December 2014, 12:54 AM   #6
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
This is the circuit.
The PSU is a standart LM317 / 337 job.
Nothing special.
Attached Images
File Type: jpg Caveman Headphone Amp sym 1.jpg (40.3 KB, 155 views)
  Reply With Quote
Old 1st December 2014, 07:18 AM   #7
diyAudio Member
 
Join Date: Aug 2010
Measuring headphones with artificial heads is a difficult task. Guess the Neumann was equipped with ear impedance simulation.
Still working on your amp. 1 hour per week is not that productive ��
  Reply With Quote
Old 1st December 2014, 09:14 AM   #8
jcx is offline jcx  United States
diyAudio Member
 
Join Date: Feb 2003
Location: ..
a look at Tyll's measurement's reproducibility
Expert Tests InnerFidelity's Headphone Measurement Repeatability and Reproducibility | InnerFidelity

definite limits to headphone response "precision" - putting them on your head, if you have hair how the cups seal...
small position changes give big high frequency diff
  Reply With Quote
Old 1st December 2014, 02:19 PM   #9
EUVL is offline EUVL  Europe
diyAudio Member
 
Join Date: Oct 2003
Joachim,

I was rather hoping to see a genius passive equaliser from you ....... ?




Patrick
__________________
xen-audio.com
  Reply With Quote
Old 1st December 2014, 03:46 PM   #10
diyAudio Member
 
Joachim Gerhard's Avatar
 
Join Date: Mar 2009
I know that it is not easy to measure headphones and i hope i can expand a bit on the method i came up with.
First i just EQed the measured response.
I decided to work only on frequencies over 2kHz and doing a treble shelf so that high frequencies remain at ca. 90dB.
This are the settings :
2kHz +2dB
2.5kHz +2dB
3.135kHz +6dB
4kHz +7dB
6.3kHz +8dB
8kHz +6dB
  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
Digital EQ Vs. Passive Xo EQ Tyimo Multi-Way 4 12th January 2014 07:08 PM
Passive bell shaped EQ for headphones AdamZuf Headphone Systems 1 19th March 2013 03:55 PM
NE5532 Headphones Preamplifier/Amplifier with EQ afternath Headphone Systems 12 22nd August 2011 05:57 PM
Available EQ on combined electronic crossovers/ EQ: Berhinger, dbx, etc rick57 Digital Source 2 10th May 2011 03:09 PM
Available EQ on combined electronic crossovers/ EQ: Berhinger, dbx, etc rick57 Multi-Way 10 11th June 2003 11:59 PM


New To Site? Need Help?

All times are GMT. The time now is 02:00 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