AMI CUSTOMS Posted February 7, 2011 Report Share Posted February 7, 2011 Just FYI for the NOOBS!!! You have to understand how a DMM reads ohms, it uses an opamp to generate various constant current and this is fed into the unknown resistance and the IC in the voltmeter reads the volts and uses ohms law to compute the resistance. Notice when the auto range, the screen flashing that is the opamp changing current amounts to reads the correct range and it is also adjusting the decimal point on the display. If you have a closed circuit then there is current present, the DMM can pick up that current and give a false reading. TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
Mattintc10 Posted February 7, 2011 Author Report Share Posted February 7, 2011 Just FYI for the NOOBS!!! You have to understand how a DMM reads ohms, it uses an opamp to generate various constant current and this is fed into the unknown resistance and the IC in the voltmeter reads the volts and uses ohms law to compute the resistance. Notice when the auto range, the screen flashing that is the opamp changing current amounts to reads the correct range and it is also adjusting the decimal point on the display. If you have a closed circuit then there is current present, the DMM can pick up that current and give a false reading. Yup always disconnect the circuit. My craftsman DMM does not have auto ranging so im sure exactly how it goes about that. Link to comment Share on other sites More sharing options...
TeamHT Posted February 7, 2011 Report Share Posted February 7, 2011 ] Curiosity. which frequency are you curious about? Not curious about any frequency just was curious how to go about getting box rise That was his point actually, the rise is going to change from frequency to frequency. Rise is not a single number to compensate for, and so note to note its going to change. One of the reasons I say rise is useless to worry about for a daioy system. Because when you're playing music, the frequencies will change constantly. Tell me...does this smell like chloroform to you? Link to comment Share on other sites More sharing options...
Mattintc10 Posted February 7, 2011 Author Report Share Posted February 7, 2011 ] Curiosity. which frequency are you curious about? Not curious about any frequency just was curious how to go about getting box rise That was his point actually, the rise is going to change from frequency to frequency. Rise is not a single number to compensate for, and so note to note its going to change. One of the reasons I say rise is useless to worry about for a daioy system. Because when you're playing music, the frequencies will change constantly. Thats what i thought Link to comment Share on other sites More sharing options...
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