sundown escort Posted October 1, 2013 Report Share Posted October 1, 2013 Lets say an amp puts out 4000 watts at 13.8 volts. And it is only getting 12.5 volts. Or it gets 14.4 volts All other variables are constant. 4000/13.8=290(about) 290 x 12.5 =3625 290 x 14.4 =4176 Does this math work? Is there a general rule of thumb? Does it vary amplifier to amplifier? Is the loss of watts much higher or much lower based on voltage increase/decrease? Is there even a way to find out without clamping or testing? I am just curious, and maybe others are too. Any ideas or experience with this would great to have input on. Thank you Edit: If this isn't the appropriate section for this mods please move it Link to comment Share on other sites More sharing options...
HHR Ed Posted October 1, 2013 Report Share Posted October 1, 2013 It's not that simple. Efficiency of the amplifier could change at different supply voltages. Also, at different power levels, load impedance may change which would in turn, change the power output. Each amplifier and each application would have differences. You can figure estimates based on best case scenarios like your math shows. But the only true way to know is to measure the output with meters or a power measuring device like the Amp Dyno Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
sundown escort Posted October 1, 2013 Author Report Share Posted October 1, 2013 It's not that simple. Efficiency of the amplifier could change at different supply voltages. Also, at different power levels, load impedance may change which would in turn, change the power output. Each amplifier and each application would have differences. You can figure estimates based on best case scenarios like your math shows. But the only true way to know is to measure the output with meters or a power measuring device like the Amp Dyno It's not that simple. Efficiency of the amplifier could change at different supply voltages. Also, at different power levels, load impedance may change which would in turn, change the power output. Each amplifier and each application would have differences. You can figure estimates based on best case scenarios like your math shows. But the only true way to know is to measure the output with meters or a power measuring device like the Amp Dyno Alright cool. This exactly the kind of answer I was looking for. Thank you Link to comment Share on other sites More sharing options...
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