MACnonsence6 Posted May 9, 2014 Report Share Posted May 9, 2014 k so lets so my only wirng options for a givven woofer are a 2 or .5 final for efficency purposes would be be better to run an an amp that makes 5k@2ohms as oposed to running an amp that would make that at .5 if given the proper electrical to support an amp like that at 2ohms daily and then perhaps drop it for comps to .5 for burps and such some where in the balpark of 800 ah worth of batt 300 amp alt at idle and a 2k bank of caps im tryng to decide on if i have enough space in my car to go all out as big as i want to. thats why the question of amps being more effiecent at maklng power at a higher impedence comes into question. does impedence rise higher per value as oposed to.5 risng to where ever would a 2ohm load have less rise I picked up an MTX Sw1212 powered subwoofer today. This thing sounds amazing. 130 watts, 12" woofer with a passive 12" woofer tuned to 27 hz. Moving the pictures on the walls and my girl got wet from the bass when i showed her haha. Tonight should be good haha. Link to comment Share on other sites More sharing options...
Krakin Posted May 9, 2014 Report Share Posted May 9, 2014 Higher nominal DC resistance will result in higher efficiency. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
MACnonsence6 Posted May 9, 2014 Author Report Share Posted May 9, 2014 would it still make power after rise though. wonder if thats the downside to a higher efficency is because now the starting point is 2 it has higher to climb as oposed to .5 rising to 1-2 and still makiing good power after voltage drop and impedence rise I picked up an MTX Sw1212 powered subwoofer today. This thing sounds amazing. 130 watts, 12" woofer with a passive 12" woofer tuned to 27 hz. Moving the pictures on the walls and my girl got wet from the bass when i showed her haha. Tonight should be good haha. Link to comment Share on other sites More sharing options...
Krakin Posted May 9, 2014 Report Share Posted May 9, 2014 Don't worry about box rise. If you want to have to have less eletrical to back up a final output go with a larger amplifier at higher impedance. Rockford has a nice little app on their website to help with efficiency. To know your amp's efficiency it should be on the manual. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
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