shepherd92683 Posted November 13, 2012 Report Posted November 13, 2012 Has any one done 2 18's in a 4th? The box I have now is ok (12.5 FT3@30HZ) but just curious if anyone has experience since I've heard somewhere that they don't handle well in 4th orders. Always thinking of a way to make better efficiency/output. Who out here knows? 2017 Honda Accord Touring Build coming soon
shepherd92683 Posted November 14, 2012 Author Report Posted November 14, 2012 Bump 2017 Honda Accord Touring Build coming soon
Rev. Wrath Posted December 31, 2012 Report Posted December 31, 2012 I've seen a vid with 2 HDC3 18s in a 4th order, but everything I've read/heard says they won't do very well in a 4th because of the sealed section. If you're really wanting to try something crazy you might want to try a 6th order. Otherwise I would try tuning your box a little higher. 30Hz seems kind of low. I've had these subs give a nice flat response at 35Hz.
8ight Posted December 31, 2012 Report Posted December 31, 2012 Those subs just aren't right for bandpass boxes, there's nothing stopping you but dammit those are SPL drivers. I'm gonna hate
Pro7 Posted December 31, 2012 Report Posted December 31, 2012 Their suspension is so stiff it would most likely fall on its face in a 4th order. And if you want to stay tuned at 30 I would get different subs or tune higher cuz the aqs have so damn stiff spiders. Just my 2 cents. I'm sure you can get your hdc3s to play well tuned to 30 with some work but it would just be easier to switch to subs with a lower fs and they would probably out perform the hdc3s also I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before
AMI CUSTOMS Posted December 31, 2012 Report Posted December 31, 2012 HDC3s want a few things 1) LOTS OF PORT AREA 2) Big Box 3) More port area??? LOL Bandpass is a no go, unless you do a 6th order. Suspension will limit you in a 4th. TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty
wmrcs Posted December 31, 2012 Report Posted December 31, 2012 HDC3s want a few things 1) LOTS OF PORT AREA 2) Big Box 3) More port area??? LOL Bandpass is a no go, unless you do a 6th order. Suspension will limit you in a 4th. x2 E34 540iT/6
SnowDrifter Posted December 31, 2012 Report Posted December 31, 2012 Sanitarium built a pretty successful 4th order with AQ 18s ~~~~~~~~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
AMI CUSTOMS Posted December 31, 2012 Report Posted December 31, 2012 Sanitarium built a pretty successful 4th order with AQ 18s His blowthru was ported. TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty
Pro7 Posted December 31, 2012 Report Posted December 31, 2012 Ami do you know why aq uses such stiff spiders? It seems like it doesn't have much benefit since 1. It requires a larger box. 2. Restricts applications. 3. Has a high fs which can really mess up a frequency response if you tune below the fs. And 4 it seems like it puts more stress on the triple joint I get that it eventually will loosen up and a stiff suspension can increase power handling but I just think that the average user would much prefer a looser suspension. I've gotten a blowjob and picked up my iphone behind her back to see what email notification I got from smd before
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