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Cheap DSO153 (not 152) or DSO154Pro for measuring amp for clipping? please help
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shaolin95:
Hi!
So I want to get a cheap oscilloscope and the use will be only to measure the speaker output of home amplifiers to make sure I am not clipping.
Do notice that I am using not only speakers but tactile devices so going down to 10hz or even 1hz if possible, would be ideal so I can make sure I am not clipping any of those. I was trying the DSO 152 and it seems to not deal with anything under 6hz but not even sure if it was accurate at that point.
Reading that the DSO152 is not highly regarded and that the 154 Pro is a better unit, I wanted to check about the 153 before buying the 154 Pro.
Or does it even matter for my usage?

Thanks!
wasedadoc:
Whatever scope, if you want to measure levels at those low frequencies you must use DC input coupling.  I can recommend the DSO154Pro for what you want to do (and more).

But you should be able to see clipping even at low frequencies with just about any scope.
shaolin95:

--- Quote from: wasedadoc on May 05, 2024, 05:12:06 pm ---Whatever scope, if you want to measure levels at those low frequencies you must use DC input coupling.  I can recommend the DSO154Pro for what you want to do (and more).

But you should be able to see clipping even at low frequencies with just about any scope.

--- End quote ---
Sorry, I am a complete noob here. I saw that DC coupling as an option in the menu of one I was looking at. Is that all, just select the DC Coupling option and proceed?
Thanks for your help..I am ordering the 154pro next :)
wasedadoc:

--- Quote from: shaolin95 on May 05, 2024, 05:22:19 pm ---
--- Quote from: wasedadoc on May 05, 2024, 05:12:06 pm ---Whatever scope, if you want to measure levels at those low frequencies you must use DC input coupling.  I can recommend the DSO154Pro for what you want to do (and more).

But you should be able to see clipping even at low frequencies with just about any scope.

--- End quote ---
Sorry, I am a complete noob here. I saw that DC coupling as an option in the menu of one I was looking at. Is that all, just select the DC Coupling option and proceed?
Thanks for your help..I am ordering the 154pro next :)

--- End quote ---
AC coupling removes the DC component but also attenuates low frequencies.  The magnitude of the effect varies from scope to scope.  Selectitng DC coupling should produce a flat frequency response all the way down to 0Hz.
shaolin95:

--- Quote from: wasedadoc on May 05, 2024, 08:01:08 pm ---
--- Quote from: shaolin95 on May 05, 2024, 05:22:19 pm ---
--- Quote from: wasedadoc on May 05, 2024, 05:12:06 pm ---Whatever scope, if you want to measure levels at those low frequencies you must use DC input coupling.  I can recommend the DSO154Pro for what you want to do (and more).

But you should be able to see clipping even at low frequencies with just about any scope.

--- End quote ---
Sorry, I am a complete noob here. I saw that DC coupling as an option in the menu of one I was looking at. Is that all, just select the DC Coupling option and proceed?
Thanks for your help..I am ordering the 154pro next :)

--- End quote ---
AC coupling removes the DC component but also attenuates low frequencies.  The magnitude of the effect varies from scope to scope.  Selectitng DC coupling should produce a flat frequency response all the way down to 0Hz.

--- End quote ---

Thanks for the help!!! :)
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