MaX Posted January 22, 2009 Report Posted January 22, 2009 Ok, this is more than likely a stupid question(but hey, they're easiest to answer ) anyways, I know that my subs are 1 ohm dvc...and I wired them series to a 1 ohm final load also, so my question is... could I take my DMM and hook it up to the speaker wires to make sure that its at a 1 ohm load? or would it not read right? <div align='center'>03 RAV4 18" DC Level 4 XL Knukonceptz 1/0 gauge AudioQue 2200D 6.25 cubic foot box tuned to 32 hz DB Linc 200 Amp H/O ALT 1/0 BIG III</div>
Noobtastic14 Posted January 22, 2009 Report Posted January 22, 2009 it would read CLOSE but not perfect. with a DMM your measuring DC resistance not AC impedance so a 2ohm coil might read 2.2 on the DMM -Drew I am a United States Military Arts and Crafts Professional. Sand it off, Paint it on. uhoh_45 said: dont be a pussy P give the jeep to drew
wL<3bass Posted January 22, 2009 Report Posted January 22, 2009 Ok, this is more than likely a stupid question(but hey, they're easiest to answer ) anyways, I know that my subs are 1 ohm dvc...and I wired them series to a 1 ohm final load also, so my question is... could I take my DMM and hook it up to the speaker wires to make sure that its at a 1 ohm load? or would it not read right? should read about .7ohm 1ohm voicecoils are actually .7ohm. Vehicle: 1997 S10 Blazer 4dr 4X4 Exterior: Rear End Bagged, Black Grill, Lifted 2" Amplifiers: Rockford Fosgate T8004 & T10001bd Batteries: 2 Stinger SPV35, Kinetik HC2400 Electrical: Big 3, DC Power 290amp Alternator w/ MLA at 15.5v Enclosure: 4.2 ft³ @ 33Hz 84sq.in. of port (20sq.in. per cube) Headunit: Eclipse CD3200 w/ 80G iPod Mids/Highs: Rockford T152s (a-pillars), Rockford T162s (doors) Subwoofers: 1 15" Fi BL Fully Loaded Wire: All 1/0g Kicker Hyperflex My YouTube Videos My Fiberglass A-Pillar Build My "Seamless" Looking Box Build My DD1508 T-Line Bandpass Build "Seamless" w/ Acrylic Windows (for '05 TrailBlazer) My Stealth 8" Fiberglass Build (for '05 TrailBlazer) My Build For A Friend's '08 Cobalt 15" BL Sealed Off From The Trunk My feedback/references...
uhoh_45 Posted January 22, 2009 Report Posted January 22, 2009 ....... R.I.P! (Nov-29-2009) 92 explorer - 4 Atomic Apxx 15s duel .7s - 4rth order bandpass wall -4 powerbass XA-3000D's - 16 8volt batts wired to 16 volts - (9+/9-) runs 0gauge - 152.3 Db @ 29hz BUILD LOG current build 97 chevy lumina4 - 1 Atomic Apx 18 - 6 cube slot port trunk sealed off - 1 powerbass XA-3000D - 2 optima G31s in spare tire18 1 run 1/0 lumina build log
E a r t h Posted January 22, 2009 Report Posted January 22, 2009 Ok, this is more than likely a stupid question(but hey, they're easiest to answer ) anyways, I know that my subs are 1 ohm dvc...and I wired them series to a 1 ohm final load also, so my question is... could I take my DMM and hook it up to the speaker wires to make sure that its at a 1 ohm load? or would it not read right? Even easier, put the leads on the amps speaker output screws when hooked up to see the total reading
Boon Posted January 23, 2009 Report Posted January 23, 2009 Even easier, put the leads on the amps speaker output screws when hooked up to see the total reading Depending on the amp this can give a slightly funky reading. First things first, set the DMM to it's lowest possible resistance setting then touch the probes together. The reading will jump to 0 but if you hold the probes for a while (10-15 seconds) the reading will slowly rise to show the true resistance of the leads + the multimeter's circuitry (unless you have something badass like a Fluke and it's calibrated) Say it comes to 0.2 ohms... The measure the resistance of your sub + it's wires. Again make sure you let the reading settle. Then subtract the number you got for the shorted probes and you have a pretty good idea of actual resistance. As mentioned above, a sub's DCR is usually slightly lower than the nominal impedance... 0.7 ohms per, uh, ohm is about right. Eg. I had a dual 1.5 sub and my meter reads 0.6 ohms @ short circuit. With the coils paralleled I get a final reading of 1.2 ohms - subtract 0.6 and you get 0.6 ohms resistance which is about right for a 0.75 nominal impedance. 10.x volts fo' life!
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