5/1/2023 0 Comments Sub amp clipping detector![]() ![]() ![]() The idea is to run the 0dB tone and view it on the scope, adjusting the gain until that sine wave begins to exhibit flat tops. But absolute voltage values are unimportant here. I don't think it works that way.Ĭlick to expand.TrueRTA has a calibration procedure so that it can read voltages. You still have to physically connect the wires from whatever device your setting to the laptop in a way that TrueRTA would be able to read the voltages etc. Oh, and TrueRTA may have a "oscope function", but that doesn't mean anything. ![]() Just another in my many confusions over something so simple. I mean, the amp isn't "seeing" 4 ohms on its terminals when its hooked through a voltage divider to a mini-amp, is it?Īnd if not, wouldn't the gain setting achieved be meaningless? But I would think that a mini-amp through a voltage divider is a whole entirely different ball-game than a 4 ohm driver. If I do the gain setting w/o scope mentioned above, I'm hooking some little amp up to the speaker outputs of my amp through a voltage divider. I sure as hell ain't using my actual driver for a full power test tone, and I don't see many resistors out there at 2 or 4 ohms capable of dissipating hundreds, or even thousands, of watts. If I had set my gains exactly using a scope on an 8 ohm load, and then switched to a 4 ohm load, wouldn't my gain setting have to change?Īssuming yes, what then are people doing for a resistive load? I mean, the actual resistance between the output terminals of an amp play a part, don't they? I'm still quite unsure about the necessity of loading an amp while doing this.Īctually, what I'm unsure about is why more "gain setting tutorials" don't cover it. ![]()
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