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21st October 2010, 08:35 PM
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#1 |
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diyAudio Member
Join Date: Sep 2005
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Audio measurements on tube amp. ? look here
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22nd October 2010, 10:46 AM
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#2 |
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diyAudio Member
Join Date: Dec 2008
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Great job, Andrea!
And many thanks for info about E-MU card. As alternative can use less expensive M-Audio Fast Track Pro card...
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www.Levelfive-Audio.com Last edited by levelfive; 22nd October 2010 at 11:07 AM. |
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22nd October 2010, 12:02 PM
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#3 |
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diyAudio Member
Join Date: Jul 2006
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Can you extend the y axis below -80dB? I'd like to see the complete noise spectrum down to around -140dB.
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22nd October 2010, 12:21 PM
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#4 |
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diyAudio Member
Join Date: Jan 2006
Location: uk
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Hi Andrea
great write-up as usual. The e-mu is a cut above. I did a similar thing a while ago but a more budget approach and consequently not as precise...but may be useful for those with less cash. Vitalstates- Amplifiers
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There is nowhere you can be that isn't where you're meant to be www.vitalstates.org |
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22nd October 2010, 04:18 PM
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#5 | |
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diyAudio Member
Join Date: Dec 2008
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Quote:
Your solution is quit precice, 16bit converter is too enough for THD measurements in 70dB range. Thanks for your article. Regards, Konstantin.
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www.Levelfive-Audio.com |
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22nd October 2010, 07:08 PM
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#6 |
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diyAudio Member
Join Date: Sep 2005
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Now I have published some more informations about this project.
The my idea was to test the amplifier in a more large frequency range, until 100KHz. I use the EMU 0404 USB with Lundahl output transformers to ear hi-resolution audio tracks and I consider it like my best source now. |
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22nd October 2010, 07:08 PM
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#7 |
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diyAudio Member
Join Date: Sep 2005
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22nd October 2010, 07:10 PM
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#8 | |
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diyAudio Member
Join Date: Sep 2005
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Quote:
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23rd October 2010, 03:29 AM
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#9 | |
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diyAudio Member
Join Date: Aug 2009
Location: Sacramento
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Quote:
As always, nice job. I have a question or request. Please tell us more about the setup of the EMU mixer software. Are there different settings for 44.1K 48K 96K and 192 K and 16 bit or 24 bit in the mixer software? I have an EMU 1212, sorting out the mixer software looks to be a long rainy day project. DT |
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23rd October 2010, 07:32 AM
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#10 | |
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diyAudio Member
Join Date: Sep 2005
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Quote:
In my webpage there is an image about the EMU0404 USB control panel. No mixer software is available with EMU0404 USB. Could you send me an image of your mixer ? |
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