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will this be big enough


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hello,

im gonna run 3 mt's 18's powered by 3 t30001bd's RF

in a 18 cu ft3 box tuned to 43 hz

will the box be big enough and the tuning frequency will be fine???

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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that should be big enough.  43 hz sounds more competition oriented.  is this a comp vehicle or daily cause 43 is a tad high for daily.

DD M4


Rockford Fosgate P500-4


SoundQubed HDC415 w carbon fiber cap


2 Rockford Fosagate T1675-S


XS Power D3400 Under Hood


XS Power D5100 in rear


Michael Singer 200A Alt


Build Log: http://www.stevemeadedesigns.com/board/topic/153901-2012-veloster-update-842013-wall-build-4-15s/

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its bought for daile and competion BASSRACE

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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i want to play a lil lower but how because the port is optimum size i cant make it bigger ow can i tune the frequency a lil down

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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interchangeable ports would def be a good idea in your case.

DD M4


Rockford Fosgate P500-4


SoundQubed HDC415 w carbon fiber cap


2 Rockford Fosagate T1675-S


XS Power D3400 Under Hood


XS Power D5100 in rear


Michael Singer 200A Alt


Build Log: http://www.stevemeadedesigns.com/board/topic/153901-2012-veloster-update-842013-wall-build-4-15s/

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but what will be better to be louder tuning the freq up or down ?? 43 hz + or 43 hz -

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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if you are in competion, tuning up would be louder, but for daily 30-40 hz is good.

DD M4


Rockford Fosgate P500-4


SoundQubed HDC415 w carbon fiber cap


2 Rockford Fosagate T1675-S


XS Power D3400 Under Hood


XS Power D5100 in rear


Michael Singer 200A Alt


Build Log: http://www.stevemeadedesigns.com/board/topic/153901-2012-veloster-update-842013-wall-build-4-15s/

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so 43 hz will be fine and just try a little bit with an swapable port ??

but will the MT's playing well at 43 hz with 3400 watt EACH SUB

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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???????????????????????????????????????

and what score haves meade with the civic ??

Alpine HU 9855R IPODRE XXX compo, 2nd one is comingrockford t8004 amp ( 4 channel ) rockford (4x) T30001bd mono amps @ 0,5 ohm for dailyRE Audio 18'' MT (2 x) Enclosure is 400 LITER tuned on 28HZ28HZ - 150db TL 200731HZ - 152db TL 2007Max Score 157,4db TL 2008 @35hz----------------------------------------------NEW INSTAL UNDERCONSTRUCTION!!ALPINE HU 9855RIPOD4 RE XXX COMPONENT SETS4 RE COAXIAL SETS4 FI BTLS 18'' SUBS8 RF T4000BD'S MONO AMPS4 RF T8004 4 CHANNEL AMPS16 northstar nsb 125 batts70mm wiring10 RF 100 farad powercaps

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