Phaeton Posted January 2, 2014 Report Posted January 2, 2014 So i noticed that a lot of the old school rockford fosgates have big 3-4" voice coils in a 8" to 18" subs, but most subwoofers now have 2.5 or somewhere around there. why isn't anyone putting out the big coils anymore? who wouldn't want a 4" copper coil in a 8"? 1997 subaru legacy outback Four 15's in a almost wall Rockford Fosgate t2500-1bdcp Rockford Fosgate T400-4 on tweets Rockford Fosgate T400-4 on highs Rockford Fosgate T400-2 on midrange Rockford Fosgate T400-2 on midbass Optima Yellow top batteries 270A Singer alt (working on a bracket for a second) Lots of Second Skin
SnowDrifter Posted January 2, 2014 Report Posted January 2, 2014 My 12s are 3" My 18s are 4" B2 audio is working on some 5" and 6" coils ~~~~~~~~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
Phaeton Posted January 2, 2014 Author Report Posted January 2, 2014 My 12s are 3" My 18s are 4" B2 audio is working on some 5" and 6" coils hmm, never heard of b2 before, might have to go check them out. 1997 subaru legacy outback Four 15's in a almost wall Rockford Fosgate t2500-1bdcp Rockford Fosgate T400-4 on tweets Rockford Fosgate T400-4 on highs Rockford Fosgate T400-2 on midrange Rockford Fosgate T400-2 on midbass Optima Yellow top batteries 270A Singer alt (working on a bracket for a second) Lots of Second Skin
Guest Posted January 2, 2014 Report Posted January 2, 2014 iirc big coils in tiny woofers = severe excursion limitations
SnowDrifter Posted January 2, 2014 Report Posted January 2, 2014 "big" coils are the norm around here. You won't find 3" coils in your wall mart / best buy audio though. Fi, AA, Sundown, DC, SQ/AQ, SSA, Atomic, CT sounds, C2 you name it. 3" coils are commonplace ~~~~~~~~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
CleanSierra Posted January 2, 2014 Report Posted January 2, 2014 You can't get a 4" coil on an 8" sub. There would be no room for a spider one you gouge out 4+ inches from the center of it. Im not the one you want to try to troll. Just a fyi for you.
ChevyBoy95 Posted January 2, 2014 Report Posted January 2, 2014 regardless of the woofer, when you have a bigger coil, you loose the amount of spider you can utilize for excursion. Anything bigger than a 2.5in coil on an 8 goes over the hill from decently high power, high excursion, to really high power, but terribly low excursion, effectively making the design flawed from the get go to suspension issues. 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/
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