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Stellar HDF Member
Joined: Oct 2015
Posts: 2,681
Likes: 851
From: Puyallup, wa
A DSP isn't "essential" with a two speaker setup, but it will make those two speakers sound a lot better (if you can learn how to tune them) than they would without a DSP
Grand HDF Member
Joined: Sep 2017
Posts: 3,717
Likes: 919
From: Southern Virginia
If I can learn how to tune them any simian based creature that has had less than a six pack to drink could learn to do a basic tune. At its most basic a DSP could be looked at as a graphical EQ. Once more knowledge is gained further functionality can be explored.
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Road Master
Joined: Apr 2021
Posts: 981
Likes: 134
From: Vancouver Canada
I have an old CRT Tektronics scope from the early nineties that I would use from time to time. I finally decided to get a cheap handheld scope and was surprised at how well it worked. The sinewave was perfectly clear and easy to distinguish between clipping and clean. If someone has a scope that never shows a clean sinewave I would be suspicious of it.
I got the scope that this fellow shows in his video and use it often:
Set Amplifier Gain with cheap $40 Oscilloscope
He gets to the nitty gritty at about eight minutes into the video.
I got the scope that this fellow shows in his video and use it often:
Set Amplifier Gain with cheap $40 Oscilloscope
He gets to the nitty gritty at about eight minutes into the video.
Road Warrior
Joined: Feb 2016
Posts: 1,354
Likes: 399
From: Vancouver, BC
That is correct. You're not setting gains for a target voltage but for a sine wave that is not clipped. You will be setting the gain to the max possible before the amp starts to clip.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
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Road Master
Joined: Apr 2021
Posts: 981
Likes: 134
From: Vancouver Canada
That is correct. You're not setting gains for a target voltage but for a sine wave that is not clipped. You will be setting the gain to the max possible before the amp starts to clip.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
Last edited by fastsoup; Dec 22, 2021 at 05:59 PM.
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
That is correct. You're not setting gains for a target voltage but for a sine wave that is not clipped. You will be setting the gain to the max possible before the amp starts to clip.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
You may see some harmonics/harmonic distortion (blurred or fuzziness) in the sine wave depending on the quality/sensitivity of the scope and probe used but that is not the same thing as clipping.
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Road Master
Joined: Apr 2021
Posts: 981
Likes: 134
From: Vancouver Canada
The reason I mentioned above that it would be interesting to use the O to set clean gain (amp never sending dirty power) and then checking the voltage with a MM.
I would assume that even if a speaker is rated for 100 watts, but you set your gains with a O and its a clean 200 watts and doesn't clip, the chances of blowing that speaker with a dirty signal gets cut down...or am I way out to lunch?
Last edited by fastsoup; Dec 23, 2021 at 02:23 PM.
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Road Master
Joined: Apr 2021
Posts: 981
Likes: 134
From: Vancouver Canada
Grand HDF Member
Joined: Sep 2017
Posts: 3,717
Likes: 919
From: Southern Virginia
The voltage is clearly shown on the oscilloscope by adding up the height of the sine wave. Also a lot of them nowadays also have a voltage readout on the side along with other pertinent info.