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Is my amp gain set properly? Speakers bottoming out...
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<blockquote data-quote="Arythael" data-source="post: 7760878" data-attributes="member: 640311"><p>I may be a newbie, but I'm fairly certain that this is just not true. Every single gain setting guide I have come across specifically says to disconnect the speakers, but I attempted your suggestion anyway and got the result I expected: the exact same result as when the amp was set up with the speakers disconnected (although, I found it strange that the speakers would not create any sound while the DMM was inline with them, even though voltage measured the same as when the speakers were disconnected). Someone please correct me if I'm wrong, but... voltage is directly controlled by the gain knob, and voltage is what I'm measuring in this case. The amp is going to output the same voltage regardless of what is connected to the amp output terminals.</p><p></p><p>After writing the above paragraph, I realized that there's a chance the resistance I used in my V=sqrt(P*R) formula is not correct for setting my gain: I used 3.9 ohms, which I <em>believe</em> was measured directly from the woofer terminals, while I think I should actually have measured the resistance of the speaker wires that connect to my amp (the entire woofer+tweeter+crossover circuit). I know I checked the tweeters before and they measured 3.3 ohms, but I don't remember if I ever checked the entire circuit. It's raining now, I will check this tomorrow and post my results!</p></blockquote><p></p>
[QUOTE="Arythael, post: 7760878, member: 640311"] I may be a newbie, but I'm fairly certain that this is just not true. Every single gain setting guide I have come across specifically says to disconnect the speakers, but I attempted your suggestion anyway and got the result I expected: the exact same result as when the amp was set up with the speakers disconnected (although, I found it strange that the speakers would not create any sound while the DMM was inline with them, even though voltage measured the same as when the speakers were disconnected). Someone please correct me if I'm wrong, but... voltage is directly controlled by the gain knob, and voltage is what I'm measuring in this case. The amp is going to output the same voltage regardless of what is connected to the amp output terminals. After writing the above paragraph, I realized that there's a chance the resistance I used in my V=sqrt(P*R) formula is not correct for setting my gain: I used 3.9 ohms, which I [I]believe[/I] was measured directly from the woofer terminals, while I think I should actually have measured the resistance of the speaker wires that connect to my amp (the entire woofer+tweeter+crossover circuit). I know I checked the tweeters before and they measured 3.3 ohms, but I don't remember if I ever checked the entire circuit. It's raining now, I will check this tomorrow and post my results! [/QUOTE]
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Is my amp gain set properly? Speakers bottoming out...
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