qu1cks1lver56 Posted June 24, 2013 Report Share Posted June 24, 2013 So I was wring up the subs in my cousins car last night (D4 AA Assassin 10's). He's got a RF Punch 400.2 so I was aiming for a 4 ohm load, series/parallel wiring on the subs etc. I wired it up, then just decided to stick a meter on it to double check my final load. It read 1.2 ohms. Big wtf moment, checked each sub in series which read 2.x ohms. Then took all the wiring off, metered each coil, every one of them metered 4.1-4.3 ohms. I rewired and the same thing, 1.2 ohms final load. I used a battery on each coil to make sure they were all in phase/marked correctly. Everything was good. I then, for shits and giggles, wired them up series/series so I should've seen a 16 ohm load, and it read 2 ohms on the meter. At this point I was extremely frustrated, wired it up where the amp saw 2 ohms per channel and called it a night. I'm no noob at this, have wired tons of dual voice coil subs and never had anything like this happen. I know DCR won't show nominal impedance, but 1.2 ohms on something that should be 4 ohms nominal? That seems extremely far from what it should read, considering I used the same meter, and checked another enclosure in my shop that was wired for 4 ohms and it showed 3.2 on the meter. So either I'm crazy, stupid, or fuck physics? First Gen Xterra: Always changing DNX 690HD RF 360.3RF T3002RF T4004RF T10001bdSilver Flute 6.5"s Tang Band 1" TweetersSundown X18 in 7cubes net tuned to 32hz Trust me .25 Blows your Load. Link to comment Share on other sites More sharing options...
john253a Posted June 24, 2013 Report Share Posted June 24, 2013 So you get 4.1-4.3 on each coil When you wire just 1 sub in series did you check that? What did it read? How long are the cables your using, as you will get resistance through them Link to comment Share on other sites More sharing options...
Colin - STAPUFT Posted June 24, 2013 Report Share Posted June 24, 2013 Yeah- I can't make that make sense either. You are talking about 2 subs, each with 2 4ohm voice coils, correct? Like you said: Series should have read 16 ohms nominal (4x4.2 = 16.8 maybe) Series - Parallel should have read 4 ohms nominal (2x4.2 = 8.4 8.4 / 2 = 4.2) 12 - 12"s in the STAY PUFT 1989 Chevy Astro Build & Comment Log Un-Interrupted Build LogYouTube Channel Chevy Trailblazer 5.1 Dolby Digital DTS Install You have a beard of a mysterious sea captain. I would follow you to hell and back. Link to comment Share on other sites More sharing options...
bkolfo4 Posted June 24, 2013 Report Share Posted June 24, 2013 Sounds like a meter issue or a wiring issue. 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...
Dwn4BassAlan Posted June 24, 2013 Report Share Posted June 24, 2013 lets avoid logical reasoning and just blame it on magical invisible inductance from an unknown and invisible source Biomedical/Behavioral Science Major, The (Self-Proclaimed) Undisputed-Homemade-Woofer-King Super-Neodymium-Woofer Build Log: The D4BA-V.2 http://www.stevemeadedesigns.com/board/topic/169236-diy-super-neodymium-woofer-build-log/?p=2475620 Fucking love Alan you goddamned fucking super nerd lol When Alan uses big words I don't understand It's warming up enough that the donut-punching cyclist douchenozzles are getting their two wheeled fagmobiles out. Everytime I see a guy driving a mini cooper I cant help but think he loves cock & (2/29/16)-My wife just bitched at me about throwing out things we don't really use. My response of well we don't really use your vagina so should we throw that out was evidently not the right response. I had to leave the room. I missed Alan. RIP 5/29/15 - I love you son. Link to comment Share on other sites More sharing options...
Colin - STAPUFT Posted June 24, 2013 Report Share Posted June 24, 2013 lets avoid logical reasoning and just blame it on magical invisible inductance from an unknown and invisible source I can dig it. That way it is the magic's fault and most importantly- no one is wrong. lolol 12 - 12"s in the STAY PUFT 1989 Chevy Astro Build & Comment Log Un-Interrupted Build LogYouTube Channel Chevy Trailblazer 5.1 Dolby Digital DTS Install You have a beard of a mysterious sea captain. I would follow you to hell and back. Link to comment Share on other sites More sharing options...
qu1cks1lver56 Posted June 24, 2013 Author Report Share Posted June 24, 2013 So you get 4.1-4.3 on each coil When you wire just 1 sub in series did you check that? What did it read? How long are the cables your using, as you will get resistance through them One sub wired in series read 2.x ohms on the meter, it also metered 2.x ohms wired in parallel. If there's 4 feet total length of wire from inside the box to the amp I'd be surprised. Sounds like a meter issue or a wiring issue. I thought it could be the meter, but I metered several other speakers in my shop and they all metered correctly. lets avoid logical reasoning and just blame it on magical invisible inductance from an unknown and invisible source Lol that's what I'm saying. First Gen Xterra: Always changing DNX 690HD RF 360.3RF T3002RF T4004RF T10001bdSilver Flute 6.5"s Tang Band 1" TweetersSundown X18 in 7cubes net tuned to 32hz Trust me .25 Blows your Load. Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted June 24, 2013 Report Share Posted June 24, 2013 well, 2 D4's wire to 1 ohm when paralleled then paralleled again, so i would check you wiring..... 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...
slowfkncar Posted June 24, 2013 Report Share Posted June 24, 2013 Check each coil and make sure it is at 2 ohms. Then put your meter in continuity and probe positive on the sub (both coils) and make sure it has no reading. If it does you have a fake coil or a single voice coil sub. If it doesn't show anything you should have a dual 2 ohm sub.I don't see any possibility for dual 2 ohm coils to read any less in series,unless you have a bad meter or fake sub. Its just not possible. It is pure mathematics. Perhaps a video of how you are measuringcan help reassure us that you are checking it the same way we would. Its kinda like saying I have 4 apples. I threw 2 away and still have 4 apples! Link to comment Share on other sites More sharing options...
scoobywrx05 Posted June 24, 2013 Report Share Posted June 24, 2013 Change the battery in your dmm. Link to comment Share on other sites More sharing options...
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