adam6604 Posted August 16, 2011 Report Share Posted August 16, 2011 i have a hifonics BRZ 2400.1d... on 2 15" RE SX's and they aren't cutting it for me.. i have a new box design ready to go for them.. but im kind of thinking of switching to some sundown / obsidian.. so would i benifit having 2 15" SA-15's or obsidians overpowered with 2400rms or have 4 sa-12s/obsidians slightly underpowered? seeems like i wouldnt have enough power to run all 4 so i thought id ask you pros Quote Driving my 2008 Dodge Ram 2500 MEGA cab with the 5.7 hemi. Audio: Two 10" Alpine Type R's ( 1000rms models ) Hifonics BRZ 2400.1D @ .5 ohm Two Kinetic 1400 batteries ( soon to have XS power under hood ) Tsunami 1/0 Awg wire throughout truck. Stock Infinity 7 speaker system ( Junk ) soon to be replaced, probably all Alpine. Exterior: 17"Dick cepek rims with 33" Toyo MT tires Bushwacker fender flares Magnaflow true duel exhaust LED tail lights with Projector headlights Plasti-dip fun coming soon! Link to comment Share on other sites More sharing options...
kryptonite Posted August 16, 2011 Report Share Posted August 16, 2011 4-12s, room to add power than Quote DC SOUND LAB NUT HUGGERCurrently Own 4 - 18" lvl 6s (m3) w/full Carbon Fiber option 2 - DC 5k lvl 4 motor lvl 2 motor On 8/2/2013 at 8:13 PM, n8ball2013 said: this is much worse. Its old n8 without the time or patience to hold fucking hands. I'm supposed to be doing school work but yet here i am making sure jr fuck fuck isn't trying to poke the other kids with a stick. Link to comment Share on other sites More sharing options...
adam6604 Posted August 16, 2011 Author Report Share Posted August 16, 2011 i dont know if i wanna go much more power wise haha, batteries and alts n shit are way to expensive, moving out soon this year, buying a new quad/truck etc.. just too many bills, so im kinda leaning towards sticking with this amp or one around this rms range.. haha so im kinda leaning towards the 15's Quote Driving my 2008 Dodge Ram 2500 MEGA cab with the 5.7 hemi. Audio: Two 10" Alpine Type R's ( 1000rms models ) Hifonics BRZ 2400.1D @ .5 ohm Two Kinetic 1400 batteries ( soon to have XS power under hood ) Tsunami 1/0 Awg wire throughout truck. Stock Infinity 7 speaker system ( Junk ) soon to be replaced, probably all Alpine. Exterior: 17"Dick cepek rims with 33" Toyo MT tires Bushwacker fender flares Magnaflow true duel exhaust LED tail lights with Projector headlights Plasti-dip fun coming soon! Link to comment Share on other sites More sharing options...
DTS909 Posted August 16, 2011 Report Share Posted August 16, 2011 If those are the old sx's they are 1000 watts each, you are running that amp at only 2 ohms. You have more power in that amp if u have good electrical to keep it in the 14v area. But a lot things come in to play. Quote VM-1 Pioneer DEH-80PRS Hertz HSK 165XL Arc Audio KS 300.2 Linear Power 1002 Full Mods Fi Audio Q 10s Sundown Audio Scv 3000 Big 3 XS Power D5100 Juice Box 20AH Singer Alternator Sky High Wire <p>My Ebay feedback. http://feedback.ebay...tab=AllFeedback Link to comment Share on other sites More sharing options...
fritosaregood Posted August 16, 2011 Report Share Posted August 16, 2011 well the 12s are rated 600 rms each.. so i wouldnt say 4 of them on 2400 is underpowering them. Quote seller feedback: http://www.stevemeadedesigns.com/board/ind...showtopic=61719 http://www.stevemeadedesigns.com/board/ind...showtopic=68281 build log: http://www.stevemeadedesigns.com/board/index.php?showtopic=44800 Gf's build: http://www.stevemeadedesigns.com/board/topic/54346-kickergirls-camaro-new-box-pg-5/#entry753970 Link to comment Share on other sites More sharing options...
Electrodynamic Posted August 17, 2011 Report Share Posted August 17, 2011 With 600 watts per driver you won't be under powering them. They'll last forever with rated power and multiple woofers always looks better. However, if you are going to be on the small side for enclosure volume with four drivers compared to having plenty of room for two drivers I suggest going with two drivers. That way you can tune low, have plenty of room for your port(s), etc. I put in a temporary setup last night using two Obsidian 15's in a box that is 2 ft^3 per driver ported and I can't wait to yank it out. It's not enough volume for the driver (which I knew), so the low end suffers a good bit. Now in their proper enclosure size, like what was in my car before, of 3.5 ft^3 ported the 15's throw down! In the end I'm going to build another box and use three 12's instead of four 12's because I'll have the extra enclosure room to tune low and plenty of room for the ports. Quote Electrodynamic Power handling is not a power requirement! Don't install suckage! Simon Eichenberger is the man. My PM's are disabled. Link to comment Share on other sites More sharing options...
LoudBimmer Posted August 17, 2011 Report Share Posted August 17, 2011 2 15 SA D4 will get you 1 ohm load. Quote Link to comment Share on other sites More sharing options...
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