Hotdog Posted June 18, 2009 Report Share Posted June 18, 2009 A long time ago I use to have a good old school set up.. I had a 2 punch 150's, one 150 per Old School Rockford Fosgate 12" Power series Sub sub would have been made in like 1989-1990. They sounded great and I was hitting the low note great. Not here is my current problem... I have the following equipment in my -sig- Rockkford Fosgate Subs Pre Built P2 12's 2 2ohm running bridged at 4 ohms on a P6002 amp Should be seeing 300RMS per sub ================================================================================ Rockford Fosgate 500x Amp Running Mids and Hi's ================================================================================ Tweeters Mids 2 pair Dont get me wrong the system sounds great nice and clear.....BUT I am really missing the low end notes.. For example ZZ Top - My Heads in Mississippi at 1:05 into the track it has some low notes in it that my old system use to just shake the crap out of everything. This system I have now I have more power going to my subs then my old system but I am hardly getting anything out of that song during the low notes... So I am thinking that this Rockford custom box is not tuned low enough to get these notes. It said the frequency response is from 26hz-250hz so I would think I should get these notes. Can some one with the proper equipment play this song for me and let me know what frequency is playing at 1:05 in that song (zz top - My heads in Mississippi) Thank You Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Kranny Posted June 18, 2009 Report Share Posted June 18, 2009 frequency response doesnt mean anything. its ALL dependent on what your box is tuned at. a high tuned box will not hit the lows. all those factory and pre-fab boxes are tuned in the 40's, 50's, and some ive seen in the 60's. if you get someone on here to design a nice box for you, you can build it yourself and it will sound WAY nicer than the one you currently have Quote Link to comment Share on other sites More sharing options...
bigbodylexus Posted June 18, 2009 Report Share Posted June 18, 2009 My first question is where is your crossover set? It could be that the box is not designed to play that low, there are so many variables, what I always do is start small because usually that's where the problem is Quote 1990 Chevy Suburban (Big Booty Judy) (4) Sundown Audio Zv5 18's (1) Sundown Audio Salt 12K (1) Sundown Audio SAX-100.4 (1) Sundown Audio SAE-50.4 (2) Crossfire ST-1 Tweeters (2) Obsidian Audio ST-1 tweeters (4) Sundown Audio Neo Pro v3 6.5's Saving 2nd Bass Link to comment Share on other sites More sharing options...
Aaron Posted June 18, 2009 Report Share Posted June 18, 2009 hey i need some help i have a few questions Quote TEAM SUB SONIC ADDICTION Link to comment Share on other sites More sharing options...
Hotdog Posted June 18, 2009 Author Report Share Posted June 18, 2009 Yea I built my last box by my self and tuned it, was not a pro job but it did the job well... but if someone is willing to design a box for 2 p2 series 12's 2 ohm (will be bridged at 4 ohm) that would be great. They are going into a 2003 Mercury Mountaineer.. I was thinking of building a box anyway, but was debating on just making it a box for 4 12" subs so I can add a couple more down the road with another amp. Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
Kranny Posted June 18, 2009 Report Share Posted June 18, 2009 hey i need some help i have a few questions make a new thread with your questions Quote Link to comment Share on other sites More sharing options...
Kranny Posted June 18, 2009 Report Share Posted June 18, 2009 Yea I built my last box by my self and tuned it, was not a pro job but it did the job well... but if someone is willing to design a box for 2 p2 series 12's 2 ohm (will be bridged at 4 ohm) that would be great.They are going into a 2003 Mercury Mountaineer.. I was thinking of building a box anyway, but was debating on just making it a box for 4 12" subs so I can add a couple more down the road with another amp. whats the maximum dimensions you would like to use your box for. height width and depth, and how many subs of what size Quote Link to comment Share on other sites More sharing options...
basshead4life Posted June 18, 2009 Report Share Posted June 18, 2009 i checked it with audacity and it looks like 33 hz Quote Team S.M.D. Maritime Car Audio- (2) 18" SSA ZCON D1 - American Bass 500.1 - 60 ft of 3/0 -480 Ah of battery - (2) stock alternators (70 +90) - Kenwood Excelon x-794, 4v preouts car audio is just a LOT more complicated than "this amp does this power" or "this sub will be this loud". its like 2 + 2 = banana. (if that confuses you then you get the point) lol Link to comment Share on other sites More sharing options...
Hotdog Posted June 18, 2009 Author Report Share Posted June 18, 2009 My first question is where is your crossover set? It could be that the box is not designed to play that low, there are so many variables, what I always do is start small because usually that's where the problem is The amp is set in low pass and crossover is set between 120 and 160 Quote (NEW) 2004 F-150 Build Log -->http://www.stevemeadedesigns.com/board/topic/192208-hotdogs-f-150-build-log/ 2003 Mercury Mountaineer Build Log --> http://www.stevemeadedesigns.com/board/topic/114380-hotdogs-2003-mountaineer-build-log-20-removed/page__gopid__1602379#entry1602379 2008 Equinox Build Log --> http://www.stevemead...g/#entry1475764 Link to comment Share on other sites More sharing options...
basshead4life Posted June 18, 2009 Report Share Posted June 18, 2009 (edited) The amp is set in low pass and crossover is set between 120 and 160 i thought that crossovers for 12s are sposed to be at like 60 or sumthin like that Edited June 18, 2009 by basshead4life Quote Team S.M.D. Maritime Car Audio- (2) 18" SSA ZCON D1 - American Bass 500.1 - 60 ft of 3/0 -480 Ah of battery - (2) stock alternators (70 +90) - Kenwood Excelon x-794, 4v preouts car audio is just a LOT more complicated than "this amp does this power" or "this sub will be this loud". its like 2 + 2 = banana. (if that confuses you then you get the point) lol Link to comment Share on other sites More sharing options...
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