fox_racin4 Posted January 18, 2012 Report Posted January 18, 2012 Si, ive been thinking about this the last coue days, and cant seem to think of the answer. When a sub starts to unload (or playing far under tunning but still not hitting mechanical limits) why does it heat up? Wouldnt more xmax cool the coil better? Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole
fox_racin4 Posted January 19, 2012 Author Report Posted January 19, 2012 on paper the box is tuned to "41hz" but becase of lack of power ( 500rms per clammped ) i dont have a problem playing down to 27hzish but after a few min they get warm, ( they do move quite a bit.. but dont hit mech. limit ) if i stay around box tunning ( 41hz) i dont have any issues! Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole
bkolfo4 Posted January 19, 2012 Report Posted January 19, 2012 Playing below tuning does not thermally blow the sub, it rips it apart mechanically if you have enough power. Like playing it free air. Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz.
fox_racin4 Posted January 19, 2012 Author Report Posted January 19, 2012 i dont hit hte mechanical "limit" just seems to get warmer faster Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole
bkolfo4 Posted January 19, 2012 Report Posted January 19, 2012 You are throwing more power into it when you are playing the lower frequencies. Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz.
87regal Posted January 19, 2012 Report Posted January 19, 2012 If you could look at your impedance profile it might answer this question.(maybe less box rise/more power) Quote
Joe X Posted January 19, 2012 Report Posted January 19, 2012 What amp and subs are those?? Also to reach a conclusion you need to control your variables very well, don't know if you are doing those tests with a signal generator or what. Quote
bkolfo4 Posted January 19, 2012 Report Posted January 19, 2012 If you could look at your impedance profile it might answer this question.(maybe less box rise/more power) That is why I said more power Quote Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz.
Dangrebel Posted January 19, 2012 Report Posted January 19, 2012 If the amp is clipping it will show more on the lows hence the heating up. Lower notes have more average power I believe. Quote 1999 GMC Yukon, 6 PSI platform 5 18's, 4th order bandpass by BHE, Taramps,
fox_racin4 Posted January 19, 2012 Author Report Posted January 19, 2012 ill be lengthening port/shrinking box volume.. when i double the power..again!! Quote 1998 gmc extd cab 12 crossfire C710s 4 SAZ-4500s 3 Singer 400A altsbuncha mids/highs Team Asshole
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