pseudonym Posted October 12, 2020 Share Posted October 12, 2020 This is purely out of curiosity, but would anyone happen to know the specs of the Harmon Kardon "sound system" some of us have? Power from the amp as well as what ohm load the stock speakers present? Link to comment Share on other sites More sharing options...
Plastixx Posted October 13, 2020 Share Posted October 13, 2020 Can't tell you about the power, but the speakers are 2ohm. Link to comment Share on other sites More sharing options...
DrD123 Posted October 15, 2020 Share Posted October 15, 2020 the brochure says 440W Link to comment Share on other sites More sharing options...
pseudonym Posted October 16, 2020 Author Share Posted October 16, 2020 Guess I need to find an amp dyno to strap it to, but do I wanna go through the trouble purely for curiosity? Link to comment Share on other sites More sharing options...
Plastixx Posted October 16, 2020 Share Posted October 16, 2020 (edited) Guess I need to find an amp dyno to strap it to, but do I wanna go through the trouble purely for curiosity? Not worth it IMO. Easy enough to guesstimate based on amplifier topology, supply voltage, and load impedance. OEM amplifiers almost never have a switching power supply to boost the voltage like aftermarket amplifiers do, that's why they choose 2ohm speakers. Power = V^2/(2*R) V is supply voltage R is load resistance So let's just pick 14V as the supply voltage. The above equation would break down to... 196/4 = 49W per channel Now that's the theoretical maximum. A typical audio amplifier doesn't swing rail to rail and there are other factors to consider. The exact number is uninteresting IMO. It's literally just double the power per channel of a standard head unit powering 4ohm speakers. Edited October 16, 2020 by Plastixx Link to comment Share on other sites More sharing options...
pseudonym Posted October 16, 2020 Author Share Posted October 16, 2020 Bravo sir. Link to comment Share on other sites More sharing options...
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