Hifonics Posted October 28, 2011 Report Share Posted October 28, 2011 Hey everyone, If I have a box tuned to 31hz and a sub with a Fs of 38, will the sub be damaged playing notes in the 20's? I'm a bit confused about that. Thanks! Hif Quote 2010 F150 FX4-18" AA Mayhem-Crescendo BC3500d-Pioneer GM-D9500F 4-channel-2 Crescendo FT1 -2 Crescendo Neo Forte 6.5 -Pioneer AVH-P3300BT-6000K HID Headlights/Fog lights-All LED interior lighting-20% tint on front windows, 1% rear windows, 5% windshield strip-Big3 (XSFlex 0ga) -DC Power 270XP -Group 65 NorthStar AGM battery Coming soon/plans: -Build log-Blacked out mirror reflectors-Tinted tails/3rd brake light Link to comment Share on other sites More sharing options...
Hifonics Posted October 28, 2011 Author Report Share Posted October 28, 2011 Bump! Subwoofer experts, pleaseeee help! Quote 2010 F150 FX4-18" AA Mayhem-Crescendo BC3500d-Pioneer GM-D9500F 4-channel-2 Crescendo FT1 -2 Crescendo Neo Forte 6.5 -Pioneer AVH-P3300BT-6000K HID Headlights/Fog lights-All LED interior lighting-20% tint on front windows, 1% rear windows, 5% windshield strip-Big3 (XSFlex 0ga) -DC Power 270XP -Group 65 NorthStar AGM battery Coming soon/plans: -Build log-Blacked out mirror reflectors-Tinted tails/3rd brake light Link to comment Share on other sites More sharing options...
Supercharged DCs Posted October 28, 2011 Report Share Posted October 28, 2011 Someone correct me if I'm wrong, but it depends on the F3 point of the enclosure. Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
cjvue Posted October 28, 2011 Report Share Posted October 28, 2011 There are lots of variables that will have an impact on how the sub will behave and produce the lower extension of frequency (below tuning). My experience, subs will have no issue geting down to 25hz (or even lower depend on subs) if correct box tuned to 31hz. Quote My Build Log- T E A M S U N D O W N A U D I O - 2013 DbDrag WF SS1-2 - 5th Place 154.6db 2013 MECA Mod3 CA State Final Champ 153.4db Powered by: Sundown Audio Link to comment Share on other sites More sharing options...
Hifonics Posted October 28, 2011 Author Report Share Posted October 28, 2011 Thanks guys. I am just worried because I don't want to blow this one Quote 2010 F150 FX4-18" AA Mayhem-Crescendo BC3500d-Pioneer GM-D9500F 4-channel-2 Crescendo FT1 -2 Crescendo Neo Forte 6.5 -Pioneer AVH-P3300BT-6000K HID Headlights/Fog lights-All LED interior lighting-20% tint on front windows, 1% rear windows, 5% windshield strip-Big3 (XSFlex 0ga) -DC Power 270XP -Group 65 NorthStar AGM battery Coming soon/plans: -Build log-Blacked out mirror reflectors-Tinted tails/3rd brake light Link to comment Share on other sites More sharing options...
cjvue Posted October 28, 2011 Report Share Posted October 28, 2011 If you worry, go with recommended box size. I, on the other hand, like to test its full potential. Quote My Build Log- T E A M S U N D O W N A U D I O - 2013 DbDrag WF SS1-2 - 5th Place 154.6db 2013 MECA Mod3 CA State Final Champ 153.4db Powered by: Sundown Audio Link to comment Share on other sites More sharing options...
Hifonics Posted October 28, 2011 Author Report Share Posted October 28, 2011 (edited) Ya, I had my box made and originally was supposed to be 3.5 cu @ 35hz but they made it 4.1cu @ 31hz. Kinda really pissed me off. And the shop also set up my gains to my BTL 15 and blew it. Now I realize if I want it done right, gotta do it all myself. Edited October 28, 2011 by Hifonics Quote 2010 F150 FX4-18" AA Mayhem-Crescendo BC3500d-Pioneer GM-D9500F 4-channel-2 Crescendo FT1 -2 Crescendo Neo Forte 6.5 -Pioneer AVH-P3300BT-6000K HID Headlights/Fog lights-All LED interior lighting-20% tint on front windows, 1% rear windows, 5% windshield strip-Big3 (XSFlex 0ga) -DC Power 270XP -Group 65 NorthStar AGM battery Coming soon/plans: -Build log-Blacked out mirror reflectors-Tinted tails/3rd brake light Link to comment Share on other sites More sharing options...
AmericanLegend Posted October 28, 2011 Report Share Posted October 28, 2011 If your box is tuned to 31 hz, then the sub will unload on frequencies lower than that. At 20 hz for example, your sub will be flopping around without any support in that box and will be making almost no sound. If you want to play 20's, tune deeper. Quote Link to comment Share on other sites More sharing options...
Hifonics Posted October 28, 2011 Author Report Share Posted October 28, 2011 If your box is tuned to 31 hz, then the sub will unload on frequencies lower than that. At 20 hz for example, your sub will be flopping around without any support in that box and will be making almost no sound. If you want to play 20's, tune deeper. But if I set my subsonic to lets say 28hz (with a 31hz box), it will be ok if the sub has a Fs of 38hz? Quote 2010 F150 FX4-18" AA Mayhem-Crescendo BC3500d-Pioneer GM-D9500F 4-channel-2 Crescendo FT1 -2 Crescendo Neo Forte 6.5 -Pioneer AVH-P3300BT-6000K HID Headlights/Fog lights-All LED interior lighting-20% tint on front windows, 1% rear windows, 5% windshield strip-Big3 (XSFlex 0ga) -DC Power 270XP -Group 65 NorthStar AGM battery Coming soon/plans: -Build log-Blacked out mirror reflectors-Tinted tails/3rd brake light Link to comment Share on other sites More sharing options...
Stee-Z Posted October 28, 2011 Report Share Posted October 28, 2011 if the shop owner set your gains and blew ur BTL id be pissed! Go buy him a DD-1 and tell him to learn how to set gains lol Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
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