Kyblack76 Posted April 25, 2014 Report Share Posted April 25, 2014 Also, the Fi coil options on the big boy subs are .7 or 1.4 .That is the DCR, not the nominal impedance.Some day people will understand the difference between impedance and measuring DC resistance with a multimeter. Just not sure if it will be in my lifetime LOL, i KNEW you where gonna chime in. Fact is bro, i SEE .7 NOMINAL, at my amp,.. on the meter.... Hell, they sell them as 1.4 or .7 coil options. But, trust me, i know what your saying.... And I sold my Mayhem and bought a SP4 for my nova. Not installed yet, but killer looking sub.You still havent gotten it in? shit kid! get to work.... Steve mick runs these iirc on something crazy like 8 or 16 crossfire 8ks. On 16v iirc I dont remember but either way he 59.9 badsraces and bass boxes the hell out of them so yea theyll take it. I personally know of an ns-1 per sp4 on 16v at .4 iirc nom. So imo with some care I wouldnt be afraid of 5k per daily Edit: mick runs xs but I mean it pretty similar. I coulda swore he runs 8ks maybe not. Either way theyd laugh at anything under 4k Xfire V2's, but, they are some what similar. Same build house, and some parts (frame, foam, cone, such) ... great sub.... The only sp4s I've heard were in obi's Lincoln and they got straight nasty, I'm hoping my tantric hdd's can hangYoull be fine....... Your meter won't measure impedance. It only measures DC resistance. You will never actually seen .7 while playing music or test tones. Trust me! I know i know.... I KNOW..lol but, like errrrrryone else.. you put a METER on the coil, and get a reading... SOoooooooooooooooooooooooo Thats what im saying yo... LOL, when you buy a XX sub, and its a dual one, you put the meter on it and what should it read? ......... right? lol SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
bkolfo4 Posted April 26, 2014 Report Share Posted April 26, 2014 No it should not!!! A meter is only reading the DC resistance of the wire made to build the coil. Impedance is the resistance and reactive load of the wire with AC applied. Since the wire is wound in a coil, it acts like an inductor. .7 and 1.4 are the DC resistance of the coil, NOT the impedance. Unless you are planning on running DC to your subs, they are Dual 1 and Dual 2 ohm!!!! They even state on the website Re as .65 and 1.4, which is DCR. Then they state the nominal impedance, which is dual 1 and dual 2 ohm. Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
Joe X Posted April 26, 2014 Report Share Posted April 26, 2014 Z (impedance) is made up by reactance (X) and resistance (R - what the multimeter can measure): Nominal impedance it not a trivial number to obtain, as it can be read on the link: The minimum of the impedance above the fundamental resonance is used for defining the nominal impedance of the speaker. http://www.klippel.de/measurements/transducer-parameters/electrical-impedance.html Link to comment Share on other sites More sharing options...
bkolfo4 Posted April 26, 2014 Report Share Posted April 26, 2014 I don't know if people don't understand it, or if they just don't believe it. Over and over and over you read: "I am running at .7" "I am wired down to .35" "Strapped at .35" Just as bad as reading "I am rising to". Almost as bad as "anything over 16 sqin per cuft is for SPL only". Oh well. . . Current system: 1997 Blazer - (4) Customer Fi NEO subs with (8) American Bass Elite 2800.1s Previous systems: 2000 Suburban - (4) BTL 15's and (4) IA 40.1's = 157.7 dB at 37 Hz. 1992 Astro Van - (6) BTL 15's and (6) IA 40.1's = 159.7 dB at 43 Hz. Link to comment Share on other sites More sharing options...
greezychef Posted April 26, 2014 Report Share Posted April 26, 2014 I am running at 1 ohm I am wired down to 1 ohm I am strapped with a 9 or .45 Link to comment Share on other sites More sharing options...
Miguels Posted April 26, 2014 Report Share Posted April 26, 2014 fuck you impedance my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
tacomaguy1 Posted April 26, 2014 Report Share Posted April 26, 2014 I don't know if people don't understand it, or if they just don't believe it. Over and over and over you read: "I am running at .7" "I am wired down to .35" "Strapped at .35" Just as bad as reading "I am rising to". Almost as bad as "anything over 16 sqin per cuft is for SPL only". Oh well. . . So what would you say Team Flex Issues Link to comment Share on other sites More sharing options...
greezychef Posted April 26, 2014 Report Share Posted April 26, 2014 The only sp4s I've heard were in obi's Lincoln and they got straight nasty, I'm hoping my tantric hdd's can hang im in east texas and wish i had made it out to hear his setup. still never heard an sp4. if theirs anyone in east Texas area that has an sp4 and would like to give me a demo sometime hit me up. i start vacation next week. a little road trip would be fun. never really gotten to hear big bass yet. this is a new hobby for me and my system is childs play compared to 95% of the people on this board. Link to comment Share on other sites More sharing options...
Smoove Posted April 27, 2014 Report Share Posted April 27, 2014 SP4 FTW 2 Team Fi 15's v1 2 DD M5's 970amps of Alt 6th order blowthroughThe truck Blowthrough build : http://www.stevemeadedesigns.com/board/topic/155555-smooves-1996-chevy-ext-cab-c1500-slow-build/The 350z build : http://www.stevemeadedesigns.com/board/topic/170694-smooves-2003-nissan-350z/ My FB page https://www.facebook.com/pages/Smooves-Car-Audio-and-performance/719746144805343 Team Fi Audio http://www.ficaraudio.com/ Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted April 27, 2014 Report Share Posted April 27, 2014 mick runs 16 C5-1700s.... no X8's.... and local guy has 4 sp4 15s on 4 3800's doing high 50s on music Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
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