Owen Hix Posted May 1, 2013 Report Share Posted May 1, 2013 I have been designing a 4th order for 2 skar zvx 12s I plan on buying soon but I have a question. I have been reading on a thread in here that you want the tuning to be somewhere around 45hz for the ported section. However if I am looking to feel the lows, do I need to tune it lower? I guess my real question is there a way i can find the range of bandwith or hz the subs will sound good at it just bassed on the numbers? Also, based on saying that i want to hit lows, is a 4th order the way to go or should i just do a normal ported box? any help is great. -05 Chevy Colorado- Kenwood KDC-352U Headunit Skar VXI-65 front component speakers Polk DXi650 rear speakers Alpine MRP-F300 4 chan. DC 3.5k Mono block 4 Skar VVX 8 D2's 3 cubes @ 28hz XS d3400 Big 3 Build Log: http://www.stevemeadedesigns.com/board/topic/165896-05-chevy-colorado-4-vvx-8s-vxi65s-daily-driver/ Bringin' car audio to this half a horse town in Iowa I call home. Link to comment Share on other sites More sharing options...
321slapinbass Posted May 1, 2013 Report Share Posted May 1, 2013 4th order's are great for lows. 45hz is pretty good for decent lows, but what do you consider low? I believe 45hz will get you down into the high 20hz range, like 28hz 29hz 2000 Dodge Durango Subs - (2) SKAR VVX 15 D2's Box - 7.2 ft^3 @ 33hz, 120 in of port Sub amp - Digital Designs M2 @ .5 ohm Mids + Highs - PRV Audio Mids + Highs amp - Hifonics 2000.4 Headunit - Alpine CDE-100 Equalizer - Clarion EQS746 Batteries - Mopar group 27 + (2) C&D 52ah Wiring - 1/0 BIG 3, (2) runs 1/0 Alternator - Singer 250A 147.79 dB @ 35hz - burp - sealed on dash 147.47 dB @ 35hz - music - sealed on dash YOUTUBE: http://www.youtube.com/user/321slapinBass/videos Link to comment Share on other sites More sharing options...
Bradprobert Posted May 1, 2013 Report Share Posted May 1, 2013 What ratio are you planning on using for the box? 45 is actually on the lower end of what you would normally tune a bandpass to. [sharedmedia=garage:vehicles:2223] 4th-order under rear seat build log: http://www.stevemeadedesigns.com/board/topic/165708-4th-order-under-rear-seat-chevy-extended-cab/#entry2410477 SD, thank for the input. I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . Link to comment Share on other sites More sharing options...
Owen Hix Posted May 1, 2013 Author Report Share Posted May 1, 2013 idk im just used to tuning normal ported boxes like 28hz-32hz but i didnt know how this would compare. the dimensions and ratio thing i get, but the bandwidth and hz part is confusing me a bit. -05 Chevy Colorado- Kenwood KDC-352U Headunit Skar VXI-65 front component speakers Polk DXi650 rear speakers Alpine MRP-F300 4 chan. DC 3.5k Mono block 4 Skar VVX 8 D2's 3 cubes @ 28hz XS d3400 Big 3 Build Log: http://www.stevemeadedesigns.com/board/topic/165896-05-chevy-colorado-4-vvx-8s-vxi65s-daily-driver/ Bringin' car audio to this half a horse town in Iowa I call home. Link to comment Share on other sites More sharing options...
Owen Hix Posted May 1, 2013 Author Report Share Posted May 1, 2013 its close to a 3:1 -05 Chevy Colorado- Kenwood KDC-352U Headunit Skar VXI-65 front component speakers Polk DXi650 rear speakers Alpine MRP-F300 4 chan. DC 3.5k Mono block 4 Skar VVX 8 D2's 3 cubes @ 28hz XS d3400 Big 3 Build Log: http://www.stevemeadedesigns.com/board/topic/165896-05-chevy-colorado-4-vvx-8s-vxi65s-daily-driver/ Bringin' car audio to this half a horse town in Iowa I call home. Link to comment Share on other sites More sharing options...
Bradprobert Posted May 1, 2013 Report Share Posted May 1, 2013 The ratio will determine your bandwidth. The higher the ratio the smaller the bandwidth, and vise versa. [sharedmedia=garage:vehicles:2223] 4th-order under rear seat build log: http://www.stevemeadedesigns.com/board/topic/165708-4th-order-under-rear-seat-chevy-extended-cab/#entry2410477 SD, thank for the input. I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . Link to comment Share on other sites More sharing options...
Owen Hix Posted May 1, 2013 Author Report Share Posted May 1, 2013 awesome guys. thanks. Ill just stick with the 45hz then -05 Chevy Colorado- Kenwood KDC-352U Headunit Skar VXI-65 front component speakers Polk DXi650 rear speakers Alpine MRP-F300 4 chan. DC 3.5k Mono block 4 Skar VVX 8 D2's 3 cubes @ 28hz XS d3400 Big 3 Build Log: http://www.stevemeadedesigns.com/board/topic/165896-05-chevy-colorado-4-vvx-8s-vxi65s-daily-driver/ Bringin' car audio to this half a horse town in Iowa I call home. Link to comment Share on other sites More sharing options...
Bradprobert Posted May 1, 2013 Report Share Posted May 1, 2013 For most output with ok frequency response the 3:1 will be good. if you want to scare the crap out of people and hit the lows, go with 45Hz and your 3:1 ratio. [sharedmedia=garage:vehicles:2223] 4th-order under rear seat build log: http://www.stevemeadedesigns.com/board/topic/165708-4th-order-under-rear-seat-chevy-extended-cab/#entry2410477 SD, thank for the input. I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . Link to comment Share on other sites More sharing options...
Owen Hix Posted May 1, 2013 Author Report Share Posted May 1, 2013 that last part is what im after haha -05 Chevy Colorado- Kenwood KDC-352U Headunit Skar VXI-65 front component speakers Polk DXi650 rear speakers Alpine MRP-F300 4 chan. DC 3.5k Mono block 4 Skar VVX 8 D2's 3 cubes @ 28hz XS d3400 Big 3 Build Log: http://www.stevemeadedesigns.com/board/topic/165896-05-chevy-colorado-4-vvx-8s-vxi65s-daily-driver/ Bringin' car audio to this half a horse town in Iowa I call home. Link to comment Share on other sites More sharing options...
Swordlordboy1234 Posted May 1, 2013 Report Share Posted May 1, 2013 I'm in for results.... I love 23 hz personally. After about 50 hz Idc for it as much. I think I'd rather have my sub stage play 20-50 hz like a beast and then have a small 8 or some bad ass mid bass speakers for the rest of the notes because I don't like those upper notes to be head cracking My old YouTube channel : http://www.youtube.com/user/SwordLords1234?feature=mhee My old build log : http://www.stevemeadedesigns.com/board/topic/161872-96-accord-b2-sundown-sky-high-dc-power-re-re-build-for-heatwave/page-37 My New Build - http://www.stevemeadedesigns.com/board/topic/207041-2016-mazda-6-sql-build/ 2016 Mazda 6 Touring JL Fix 86 - OEM signal correction B2 prototype DSP 6to8 B2 Ref63 - 3 way active set 2 B2 Class H quattro's 1 B2 Zero.5R @.5 2 B2 HNv3 12 d2 B2 SLIP40 - Lithium in the trunk Northstar Group 35 under the hood 100ft 2/0 welding cable 30ft 4ga welding cable 20ft 8ga welding cable All stinger OFC speaker wire Soundrive custom RCA's Tons of attention to detail.... Can it be perfect? Link to comment Share on other sites More sharing options...
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