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Old 15th August 2006, 06:52 PM   #1
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Default equipments needed

Hi everybody!

i would like to ask you a couple questions:


what equipments do you guys have in your personal laboratory?
...what do you wish you would have?

what is a must for you?


i wait for your posts.


Regards,
Stefano.
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Old 15th August 2006, 07:37 PM   #2
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This has been covered many, many times before...
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Old 15th August 2006, 09:07 PM   #3
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...sorry, but it's the first time that i visit this section of diy forum.

if anyone can be kind to link me to a good 3d that talks about this...or just answer to this post...it would be really nice.

Thanks.

Stefano.
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Old 15th August 2006, 11:11 PM   #4
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I will tell you what I have:

60MHz Tektronix Scope
+-30 V 3 A Power Supply
3MHz Function Generator
DMM

I wouldn't mind a distortion meter of some sorts and a noise meter.
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Old 16th August 2006, 01:59 AM   #5
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Quote:
Originally posted by davidallancole
I wouldn't mind a distortion meter of some sorts and a noise meter.
Checkout the many freeware spectrum analyzers (AnalFreq, Spectran) and use your soundcard
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Old 16th August 2006, 12:56 PM   #6
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thanks for your answers.

how do you test the distortions and the characteristicals of your amp( or pre) ?

Does anyone know about Otala's Test to evaluate the distortion?
i was searching for some informations about this but i couldn't find anything.
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Old 16th August 2006, 10:01 PM   #7
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Hi,

Quote:
Originally posted by Stefanoo
how do you test the distortions and the characteristicals of your amp( or pre) ?
I use computer spectrum analasys and the spreadsheet found here: http://www.dogstar.dantimax.dk/tubestuf/thdconv.htm
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Old 17th August 2006, 07:41 AM   #8
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thanks.

what program do you use for the spec analisys?

if anyone else got other material about the distortions analisys, i would like, if possible, to read it.

Thanks.
Stefano.
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Old 17th August 2006, 12:12 PM   #9
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I'm on Linux, so I use japa or jaaa. You can use AnalFreq on Windows with WinISD as your generator, or one of the far-too-many Winamp sig gen plugins.
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Old 17th August 2006, 01:30 PM   #10
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thanks!

anyone knows Otala Theory about the distortion?
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