vee333gp Posted May 4, 2010 Report Share Posted May 4, 2010 Hi guys what causes impedance rise on a box and what effect it has on output Quote Link to comment Share on other sites More sharing options...
Nice Posted May 10, 2010 Report Share Posted May 10, 2010 Coil heat is one cause and as the impedance rises the power from the amp diminishes. Quote Link to comment Share on other sites More sharing options...
Boon Posted May 10, 2010 Report Share Posted May 10, 2010 Coil heat is one cause and as the impedance rises the power from the amp diminishes. Coil heat is power compression, not impedance rise. Impedance rise is caused by the varying current created by moving a coil through a magnetic field. When you do this it induces a current through the coil (basically like your alternator) which opposes the current driving the sub. It varies by frequency depending on the box and driver. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
splzx3 Posted May 10, 2010 Report Share Posted May 10, 2010 didn't we go over this like 2 nights ago? searching is ur friend Quote ________________________________________________________________________ deepsilencer, on 22 Aug 2011 - 17:32, said: splzx3, on 22 Aug 2011 - 17:27, said: i had my fun on one of his videos...till he blocked me then i got my mother into it lol after her he closed the comments xD lol your mom is a G! WTF, I never thought I'd have a conversation about cross dressers and trans-genders on a car audio forum. Link to comment Share on other sites More sharing options...
Robert8252 Posted May 10, 2010 Report Share Posted May 10, 2010 No, it was 6 days ago!!! http://www.stevemeadedesigns.com/board/topic/76995-impedance-rise/page__p__1063099__hl__impedance%20rise__fromsearch__1entry1063099 Quote 2013 F150 Crew Cab Old Build Log Feedback 2013 F150 Equipment - Some Awesome Stereo Sound Making Stuff Link to comment Share on other sites More sharing options...
Forevrbumpn Posted May 10, 2010 Report Share Posted May 10, 2010 either way, its talked about in a new thread at least once a week I, or someone, anyone who has speaker testing equipment should make a video how a speakers impedance changes free air, in a sealed box, and in a ported box, do impedance tests, show the graph, talk about it, point out what the peaks, and dips mean, and sticky it Quote I have a ritual called "terminator". I crouch in the shower in the "naked terminator" pose. With eyes closed I crouch for a minute and visualize either Arnie or the guy from the 2nd movie. I then start to hum the T2 theme. Slowly I rise to a standing position and open my eyes. It helps me get through my day. The only problem is if the shower curtain sticks to my terminator leg. It sorta ruins the fantasy. Link to comment Share on other sites More sharing options...
Nice Posted May 10, 2010 Report Share Posted May 10, 2010 Coil heat is power compression, not impedance rise. Impedance rise is caused by the varying current created by moving a coil through a magnetic field. When you do this it induces a current through the coil (basically like your alternator) which opposes the current driving the sub. It varies by frequency depending on the box and driver. So the heating of a coil will not cause a rise? Quote Link to comment Share on other sites More sharing options...
Boon Posted May 11, 2010 Report Share Posted May 11, 2010 So the heating of a coil will not cause a rise? Well yeah, it does. It's just a different kind of rise. As above, the technical term is power compression, impedance rise is specifically related to the inductance of the coil. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
ilovetoinstall Posted May 11, 2010 Report Share Posted May 11, 2010 soooo ken u gonna do it for zee forum or what Quote Greg, Triple C Auto Niagara Falls NY Under construction2002 Chevy Suburban pioneer 8000NEX 3 Sets of ARC Audio 6000 components in custom front doors 2 Powerbass midrange in center council 4 Super tweets 2 Focal 900.6 6 channels 4 American Bass VFL Comp 15's (currently running 2) DC 12.0k DC Power dual alt bracket 2 XS Power D3400's under the hood 3 C&D technologies 110ah in rear along with multiple runs of 0 AWG OFC Link to comment Share on other sites More sharing options...
keepinitloud Posted May 11, 2010 Report Share Posted May 11, 2010 either way, its talked about in a new thread at least once a week I, or someone, anyone who has speaker testing equipment should make a video how a speakers impedance changes free air, in a sealed box, and in a ported box, do impedance tests, show the graph, talk about it, point out what the peaks, and dips mean, and sticky it I like this idea Quote 06 chrysler 300C Hemi one mmatts dreadnaut 15 powered by a planet audio vx 2200d fosgate p200 running planet audio 8" midbass drivers and super compression tweeters stock battery and a stinger spv44 Irragi 300 amp alternator big 3 1/0 http://www.stevemeadedesigns.com/board/topic/55075-system-in-my-300c/page__view__findpost__p__763656__fromsearch__1 Link to comment Share on other sites More sharing options...
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