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<blockquote data-quote="The_Quiet_One" data-source="post: 8603890" data-attributes="member: 614562"><p>I really respect your thoughts and opinions on a lot of things, but to think you can model the dynamics using only joules law to evenly compare playing different notes is naive at best. Perhaps instead of being snarky you should learn the very basics of constructing a Physics based model instead of falling back to a gross oversimplification and not to mention a complete miss to the argument I presented? Correct me if I'm wrong this argument started out from someone different notes required more or less power, and my posts have been an attempt at pushing the discussion towards why one could see differences in the electrical draw of the amp between different notes?</p><p></p><p>Did I say that the clamped power was the same between different notes? <strong>If you truly understood basic electricity </strong>you would know my post was practically screaming you cannot guarantee the delivered power was the same for two different notes.</p><p></p><p>Like I was trying to get across to water bear. We are not modeling the energy difference at the RCAs inherent to the electrical signal transmitted by the DSP/HU. We are modeling the underlying physics of the subwoofer/amplifier system to see if it's feasible that the electrical draw would be different at different tones. Granted that itself is a pretty gnarly simplification for most daily scenarios, but it could be swallowed a tad easier if one took the FFT of various bass heavy music and analyzed a signal in frequency space.</p><p></p><p>You are dealing with a highly dynamic system in which fundamental electrical characteristics change over stroke. Like it or not at low frequencies this likely means considerable difference between notes such as 20 Hz or 40 Hz. To begin to even make a definitive claim requires some complex modeling of induced back emf to try and quantify some dynamic thevenin impedances. At that point you <strong>might</strong> could make some gross guesses as far as the lower bound in instantaneous power requirements. Otherwise you're telling me load impedance is constant at all target frequencies for the subwoofer system (driver and enclosure)? I won't even ask about phase dynamics...//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif</p><p></p><p>So to sum up my argument: I don't know. It's hard to make a definite claim. Determining power output from an amplifier is difficult with dynamic impedances in an AC system. That dynamic impedance is going to mean different power delivered by the amp and therefore change the electrical requirements at that time.</p><p></p><p>FYI Look deeper into the power equation you posted. You don't think there is a frequency dependence built into there in this use case?</p><p></p><p>Or better yet. Grab an O-Scope and a couple DMMs and prove me wrong. Howabout I put money where my mouths is? 100 bucks if you prove me wrong through empirical results. I'll pay in silver, crypto, or cash, your pick.</p></blockquote><p></p>
[QUOTE="The_Quiet_One, post: 8603890, member: 614562"] I really respect your thoughts and opinions on a lot of things, but to think you can model the dynamics using only joules law to evenly compare playing different notes is naive at best. Perhaps instead of being snarky you should learn the very basics of constructing a Physics based model instead of falling back to a gross oversimplification and not to mention a complete miss to the argument I presented? Correct me if I'm wrong this argument started out from someone different notes required more or less power, and my posts have been an attempt at pushing the discussion towards why one could see differences in the electrical draw of the amp between different notes? Did I say that the clamped power was the same between different notes? [B]If you truly understood basic electricity [/B]you would know my post was practically screaming you cannot guarantee the delivered power was the same for two different notes. Like I was trying to get across to water bear. We are not modeling the energy difference at the RCAs inherent to the electrical signal transmitted by the DSP/HU. We are modeling the underlying physics of the subwoofer/amplifier system to see if it's feasible that the electrical draw would be different at different tones. Granted that itself is a pretty gnarly simplification for most daily scenarios, but it could be swallowed a tad easier if one took the FFT of various bass heavy music and analyzed a signal in frequency space. You are dealing with a highly dynamic system in which fundamental electrical characteristics change over stroke. Like it or not at low frequencies this likely means considerable difference between notes such as 20 Hz or 40 Hz. To begin to even make a definitive claim requires some complex modeling of induced back emf to try and quantify some dynamic thevenin impedances. At that point you [B]might[/B] could make some gross guesses as far as the lower bound in instantaneous power requirements. Otherwise you're telling me load impedance is constant at all target frequencies for the subwoofer system (driver and enclosure)? I won't even ask about phase dynamics...[IMG]//content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif[/IMG] So to sum up my argument: I don't know. It's hard to make a definite claim. Determining power output from an amplifier is difficult with dynamic impedances in an AC system. That dynamic impedance is going to mean different power delivered by the amp and therefore change the electrical requirements at that time. FYI Look deeper into the power equation you posted. You don't think there is a frequency dependence built into there in this use case? Or better yet. Grab an O-Scope and a couple DMMs and prove me wrong. Howabout I put money where my mouths is? 100 bucks if you prove me wrong through empirical results. I'll pay in silver, crypto, or cash, your pick. [/QUOTE]
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