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<blockquote data-quote="CarAudioMk2" data-source="post: 8516242" data-attributes="member: 670235">Okay, I&#039;ve finally bought a multimeter and today I&#039;ve done some testing.- My 12V from battery is fine, shows 12V at all times. (The fuse seemed tight in the holder and even when I tried to wiggle it the power at the other end was 12V)- My remote cable sends 12v from the head unit ignition port.- My ground cable is fine, works with both the 12V and remote.** When the 12V and ground are connected to the sub, but the remote isn&#039;t, I get 12V across the 12V &amp;amp; Gnd...HOWEVER, when I turn on the remote cable... that figure across the 12V &amp;amp; Gnd drops to 5V (and on another test 1.5V) Seemed very odd, but is this odd, or something to do with the power being drawn within the amp/sub when rem is on?).**There&#039;s a 20A fuse in the back of the sub itself (which is fully in tact)...This fuse is in so tight, I can only get it out with pliers...When I took out the fuse and tested from one side of the broken fuse circuit to the ground, I got 12V, but when I tested the other side of the connection I got 12V also!!! (And 1V on another test).Sounds to me as if there&#039;s a problem with the sub itself, but I&#039;d hate to think I&#039;m missing something glaringly obvious....am I?I don&#039;t know enough about the internals of the active sub to know how it works, but throughout all tests, despite the 12V, Rem &amp;amp; Gnd cables being absolutely fine, the &quot;POWER&quot; LED in the sub never came on once, and the sub didn&#039;t work at all.Any further advice appreciated please!</blockquote>

[QUOTE="CarAudioMk2, post: 8516242, member: 670235"] Okay, I've finally bought a multimeter and today I've done some testing. - My 12V from battery is fine, shows 12V at all times. (The fuse seemed tight in the holder and even when I tried to wiggle it the power at the other end was 12V) - My remote cable sends 12v from the head unit ignition port. - My ground cable is fine, works with both the 12V and remote. ** When the 12V and ground are connected to the sub, but the remote isn't, I get 12V across the 12V & Gnd...HOWEVER, when I turn on the remote cable... that figure across the 12V & Gnd drops to 5V (and on another test 1.5V) Seemed very odd, but is this odd, or something to do with the power being drawn within the amp/sub when rem is on?). **There's a 20A fuse in the back of the sub itself (which is fully in tact)... This fuse is in so tight, I can only get it out with pliers... When I took out the fuse and tested from one side of the broken fuse circuit to the ground, I got 12V, but when I tested the other side of the connection I got 12V also!!! (And 1V on another test). Sounds to me as if there's a problem with the sub itself, but I'd hate to think I'm missing something glaringly obvious....am I? I don't know enough about the internals of the active sub to know how it works, but throughout all tests, despite the 12V, Rem & Gnd cables being absolutely fine, the "POWER" LED in the sub never came on once, and the sub didn't work at all. Any further advice appreciated please! [/QUOTE]

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