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DMM method not working
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<blockquote data-quote="blackink" data-source="post: 7078243" data-attributes="member: 592071"><p>Hey guys I recently put in 2 15' dc xls dual 2 powered by an audiopipe 30001d which gives 3000 watts rms at 2 ohms. I did the dmm voltage calculation and ended up with 77.475 volts.</p><p></p><p>I left the car on and disconnected the subs from the amp and put the dmm wires into the speaker terminals. On the HU (alpine 9887) I put sub level on 15/15 and I had the bass knob all the way up which is different than the bass boost on the amp. I left the bass boost at 0 and put the master volume at 26/35 while playing a 50hz test tone at 0 db. It ****** since my door speakers were blaring this awful tone (don't know how to disconnect them) while I was trying to get the correct voltage.</p><p></p><p>When I put the gain to about 3/5 I hit 72 volts and from then on it didn't change at all even with the gain maxed out. I am off by several points and I have no idea what to do. I got frustrated and tried detecting it by ear playing music but the amp went into protect for a couple seconds when I put the gain up really high.</p><p></p><p>What am I doing wrong here? Prior to this my friend set the gains by having the max volume on the HU as 20/35 with the sub volume 5/15 and the bass knob up 1/2 and bass boost up 3 dbs with the gain about halfway. It sounded good but I wanted to set the gains "properly" and now there's a bunch of stuff going on that I don't know how to interpret.</p><p></p><p>Help please!</p></blockquote><p></p>
[QUOTE="blackink, post: 7078243, member: 592071"] Hey guys I recently put in 2 15' dc xls dual 2 powered by an audiopipe 30001d which gives 3000 watts rms at 2 ohms. I did the dmm voltage calculation and ended up with 77.475 volts. I left the car on and disconnected the subs from the amp and put the dmm wires into the speaker terminals. On the HU (alpine 9887) I put sub level on 15/15 and I had the bass knob all the way up which is different than the bass boost on the amp. I left the bass boost at 0 and put the master volume at 26/35 while playing a 50hz test tone at 0 db. It ****** since my door speakers were blaring this awful tone (don't know how to disconnect them) while I was trying to get the correct voltage. When I put the gain to about 3/5 I hit 72 volts and from then on it didn't change at all even with the gain maxed out. I am off by several points and I have no idea what to do. I got frustrated and tried detecting it by ear playing music but the amp went into protect for a couple seconds when I put the gain up really high. What am I doing wrong here? Prior to this my friend set the gains by having the max volume on the HU as 20/35 with the sub volume 5/15 and the bass knob up 1/2 and bass boost up 3 dbs with the gain about halfway. It sounded good but I wanted to set the gains "properly" and now there's a bunch of stuff going on that I don't know how to interpret. Help please! [/QUOTE]
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DMM method not working
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