[sdiy] Cheap audio spectrum analyzer.. finally..

Jean-Pierre Desrochers jpdesroc at oricom.ca
Tue Oct 27 18:28:57 CET 2015


I finally decided to go for this:

HP 35660A (with option 001 memory installed)
http://www.sglabs.it/public/SgLabs_HP%2035660A.pdf

It was not cheap but around one third of eBay's mean prices
for those working condition HP testers..
and the dealer was 1 hour car ride from my home.
I think it's a good investment.
Ooooff !

>>>> 
>>>> Le 2015-10-26 11:18, Neil Johnson a écrit :
>>>> 
>>>>> Jean-Pierre Desrochers wrote:
>>>>>> Do you know of a cheap audio spectrum analyzer I could buy to 
>>>>>> check 20-20khz frequency response on audio stuff ?
>>>>> Define "cheap".
>>>>>> That would includes sinus generator + analyzer in the same box.
>>>>> Ok.
>>>>>> I checked on eBay and most analyzers are RF band based and are so 
>>>>>> $$$$$ expensives. But 2 things:
>>>>> You're looking for the wrong kind of thing.
>>>>>> - I don't want to use analysis software on a separate PC - Any DIY 
>>>>>> projects with micro/graphic LCD would do.. I want a standalone 
>>>>>> analyzer.
>>>>> Well, for a complete standalone box I would recommend an HP Dynamic
>>>>> Signal Analyser, such as the venerable 3561A, or something a little
>>>>> more modern such as a 35660A. Pros: all-in-one, built-in screen, 
>>>>> will
>>>>> do amplitude and phase response. Cons: dynamic range ok but won't 
>>>>> get
>>>>> down to the very low levels of noise and distortion.
>>>>> The next step up would be audio analysers, such as the HP 8903 or
>>>>> something from Audio Precision. While the 8903 does have a built-in
>>>>> computer and can do sweeps, the display is 7-seg LED so you'll need 
>>>>> a
>>>>> pencil and some graph paper. The Audio Precision kit needs an
>>>>> external control computer, but can measure the very lowest noise 
>>>>> and
>>>>> distortion.
>>>>> Again, what do you mean by "cheap"...? What is your budget, and 
>>>>> what
>>>>> level of performance do you want to measure?
>>>>> Neil
>>>>> --
>>>>> http://www.njohnson.co.uk [1]
>>>> 
>>>> 
>>>> 
>>>> Links:
>>>> ------
>>>> [1] http://www.njohnson.co.uk
>>>> _______________________________________________
>>>> Synth-diy mailing list
>>>> Synth-diy at synth-diy.org
>>>> http://synth-diy.org/mailman/listinfo/synth-diy
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org
>> http://synth-diy.org/mailman/listinfo/synth-diy
>> 
>> 
>> -----
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2014.0.4842 / Virus Database: 4447/10892 - Release Date: 
>> 10/26/15


More information about the Synth-diy mailing list