Re: Plumbing solved, onto electricity! - Saab General Bulletin Board - Saabnet.com
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The output impedance may be specified in the manual. If not, you can measure/calculate it, but it's not exactly easy. You would need to feed a steady signal through the amp, like a test tone. Terminate the output with A resistor selected to be what you expect the output impedance to be (mind the power rating). Run the signal through the amp, then measure the voltage difference between the termination resistor and the total output voltage. Cross multiply to determine the ratio of power. E.g. if the termination resistor voltage matches the output impedance, the voltage will be divided evenly; if the impedance is half the termination resistance, 2/3 of the total voltage will be across the termination resistor. As to what he's trying to achieve with this, I have no idea. I have a short book on car audio noise somewhere, I will try to find it and see if it can shed light on the subject.
posted by 198.84.247...
Posts in this Thread:
- Plumbing solved, onto electricity!, Justin VanAbrahams , Tue, 29 Oct 2013 16:46:14
- Re: Plumbing solved, onto electricity!, Gene N , Wed, 30 Oct 2013 05:17:15
- Re: Plumbing solved, onto electricity!, Justin VanAbrahams , Wed, 30 Oct 2013 09:58:36
- Re: Plumbing solved, onto electricity!, Gene N , Wed, 30 Oct 2013 12:05:13
- Also..., Justin VanAbrahams , Wed, 30 Oct 2013 11:12:52
- Re: Also..., Snowmobile , Wed, 30 Oct 2013 12:42:03
- Resistors, Justin VanAbrahams , Wed, 30 Oct 2013 12:50:54
- Re: Plumbing solved, onto electricity!, TML , Wed, 30 Oct 2013 01:46:55 <-- Viewing This Message
- Oy!, Justin VanAbrahams , Wed, 30 Oct 2013 10:05:34
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