SnowDrifter Posted January 30, 2012 Report Share Posted January 30, 2012 (edited) Watching youtube, found this video If the cc-1's internals are set to that it looks for -3db, then by definition that is a 12 db/octave butterworth filter it was designed to work for. Now, since TONS of amps today use 24db/octave Linkwitz-Riley crossovers(including the one in the video I believe) - which are attenuated by -6db at their crossover point - this would mean that the cc-1s accuracy goes out the window since it would be off by an 8th of an octave right? Edited January 30, 2012 by SnowDrifter Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Ray Posted January 30, 2012 Report Share Posted January 30, 2012 Nope. You set the refrence freq with the amp on full range. Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
SnowDrifter Posted January 30, 2012 Author Report Share Posted January 30, 2012 Nope. You set the refrence freq with the amp on full range. I'm talking about crossover setting, not gain matching. Sorry if I wasn't clear on that Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Ray Posted January 30, 2012 Report Share Posted January 30, 2012 I am too Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
falcons03079313 Posted January 30, 2012 Report Share Posted January 30, 2012 I am too burn Quote Link to comment Share on other sites More sharing options...
SnowDrifter Posted January 30, 2012 Author Report Share Posted January 30, 2012 I am too Then I think we have a misunderstanding then haha. Lets see if I can explain my thoughts better You set the reference frequency, then adjust the crossover until the cc-1 registers a -3db drop in voltage - the crossover point of a 12db/octave crossover Now if you repeat the same procedure on a 24db/octave crossover where the crossover point is -6db, but the cc-1 is looking for -3db and not -6db -- wouldn't that create an inaccuracy? Quote ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
Ray Posted January 30, 2012 Report Share Posted January 30, 2012 -3db is still -3db Regaurdless of how steep your slope is. I had the same sort of question before they even came out. Once i got mine, i found a small error in the manual on how to adjust the refrence freq, corrected the error now all is good. (and changed in the manual) Im glad that you understand the difference between butterworth and LW cuts Know that even though tony puts them up against the audio prescision, i put mine head to head on my audio control 3055rta. Its spot on. A xover point is definded as the point at which a freq is -3db. So it does that perfect. No need to attempt to compensate for the slope you are using as the cut. Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
Ray Posted January 30, 2012 Report Share Posted January 30, 2012 All amplifiers are marked and tested this way also. Quote 2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz Link to comment Share on other sites More sharing options...
dwright27 Posted January 30, 2012 Report Share Posted January 30, 2012 Class in session Quote 2006 F-150 4 DC XL M2 18's Walled Daily Driver XS Power 4 DC 3.5kw Team DC Team S.P.L. Lot of Audio Technix and 1/0 DC Audio Dealer American Bass Dealer XS Power Dealer Audio Technix Dealer Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted January 30, 2012 Report Share Posted January 30, 2012 Class in session damn straight. Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
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