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Old 24th December 2011, 04:32 PM   #1641
regal is offline regal  United States
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Quote:
Originally Posted by abraxalito View Post
Has this claim some empirical support or is it merely the regurgitation of a popularly held belief?

The dScope isn't picking up "audible" differences per the NW Blog
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Old 24th December 2011, 06:06 PM   #1642
agdr is offline agdr  United States
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I'm gone for the Holidays too for a few days. Happy holidays to RocketScientist and everyone else! Thanks again to RocketScientist for all the efforts with the O2 this year. The amp really turned out well.
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Old 24th December 2011, 07:45 PM   #1643
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I just got all my parts in from Mouser. I am excited to get it going. Thanks RS and everyone else for all your support. Merry Christmas!
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Old 26th December 2011, 06:24 PM   #1644
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Hello,

I know it's always a bother to have people like me complaining on their first post on thread, but well I do have a little problem

I've build my O2 yesterday, and althought everything should be workin perfectly fine, I've got no sound...

I've got the little pop that say the O2 is on, I've got every tension righ, every resistance right... And no sound.

No distorsion, no hiss, just no sound

Did anyone have this problem, I mean, everythin is ok, but NO sound D
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Old 26th December 2011, 06:39 PM   #1645
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Quote:
Originally Posted by nanotechnos View Post
Hello,

.....

I've got the little pop that say the O2 is on, I've got every tension righ, every resistance right... And no sound.

No distorsion, no hiss, just no sound

Did anyone have this problem, I mean, everythin is ok, but NO sound D

When you say 'everything ok' do you mean that you have been through the whole of RocketScientist's/NWavGuy's testing procedure and it all checks out?

If not, or if you've missed a bit out, then that's the next step.

If any numbers don't check out then at that point it's worth posting back with the numbers.

Here's hoping you haven't done all the tests yet...
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Old 26th December 2011, 06:44 PM   #1646
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I'm afraid I(ve done all the troubleshotting ,and yes EVERYTHINS is fine...

I'll do more tests tonight, I've tested it with ultra sensitive earphones, and where ther is no hiss, I could hear a little fumble of sound , as if they were 0.00001% of the original sound D

And again no distorsion, no hiss, no fuzz, no sound o_O
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Old 26th December 2011, 06:55 PM   #1647
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Quote:
Originally Posted by nanotechnos View Post
I'm afraid I(ve done all the troubleshotting ,and yes EVERYTHINS is fine...

I'll do more tests tonight, I've tested it with ultra sensitive earphones, and where ther is no hiss, I could hear a little fumble of sound , as if they were 0.00001% of the original sound D

And again no distorsion, no hiss, no fuzz, no sound o_O

I'm guessing that your input jack's negative terminal isn't connected properly, or your gain-stage opamp (NJM2068) is having a problem or isn't soldered correctly on every pin. Are you testing in the enclosure or out of the enclosure?

Any others out there have better diagnostic suggestions?
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Old 26th December 2011, 07:18 PM   #1648
Turbon is offline Turbon  Sweden
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nanotechnos?

Any chance you have mixed the input and output?

Brgds
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Old 26th December 2011, 09:32 PM   #1649
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is anyone honestly using this as a portable?
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Old 26th December 2011, 09:38 PM   #1650
Turbon is offline Turbon  Sweden
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Quote:
Originally Posted by Kibble Fat View Post
is anyone honestly using this as a portable?
Yepp, I'll carry it around during my vacation in a few days...

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