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Car Audio Discussion
General Car Audio
Amplifier Cutting Out, but No Voltage Drop
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<blockquote data-quote="Mudflap" data-source="post: 8821898" data-attributes="member: 686701"><p>Hi,</p><p></p><p> I have a Sundown Audio SIA-2500 running 2 American Bass XR's wired at 2 ohms to the amplifier. The amplifier sometimes cuts out randomly for a second here and there at higher volumes and I really doubt its pushing the 2500 watts it's supposed to at 2 ohm (even accounting for impedance rise) because my battery voltage NEVER goes below 14v. I'm only running a 120 amp alternator with an optima red top battery, so nothing special. The acoustics in my truck are terrible, I haven't covered the air vents yet, and etc. so I know it won't sound great, but I really feel like it's missing something.</p><p></p><p> I have done the big three upgrade with oversized 0 awg wiring and have the subs wired with the same wiring, so the physical wire shouldn't be the problem. However, when I was doing the install, my buddy kept insisting on making the ground to a seat bolt instead of just using a self tapper so I caved. This leads me to suspect a bad ground in the system, but I haven't used a DMM to measure the resistance of the ground. Do you guys think this is the problem? I felt the connection itself in curiousity, but it wasn't hot to the touch. Do you also think a somewhat small self-tapper to the body would be sufficient for this system as a grounding location to the body?</p><p></p><p>P.S. I used 4 awg ofc wire from my old amp setup to just test out the amplifier when I first got it (which I know is a terrible idea), and it drained the battery a <strong><u>lot</u> </strong>more and never really drew more than 100 amps because that is what it was fused at. I understand voltage drop and such causing some of this, but I feel that a properly grounded 4 awg wire shouldn't be doing better than this current wiring I have.</p><p></p><p>What do you guys think the solution/problem is?</p><p>Thank you!</p></blockquote><p></p>
[QUOTE="Mudflap, post: 8821898, member: 686701"] Hi, I have a Sundown Audio SIA-2500 running 2 American Bass XR's wired at 2 ohms to the amplifier. The amplifier sometimes cuts out randomly for a second here and there at higher volumes and I really doubt its pushing the 2500 watts it's supposed to at 2 ohm (even accounting for impedance rise) because my battery voltage NEVER goes below 14v. I'm only running a 120 amp alternator with an optima red top battery, so nothing special. The acoustics in my truck are terrible, I haven't covered the air vents yet, and etc. so I know it won't sound great, but I really feel like it's missing something. I have done the big three upgrade with oversized 0 awg wiring and have the subs wired with the same wiring, so the physical wire shouldn't be the problem. However, when I was doing the install, my buddy kept insisting on making the ground to a seat bolt instead of just using a self tapper so I caved. This leads me to suspect a bad ground in the system, but I haven't used a DMM to measure the resistance of the ground. Do you guys think this is the problem? I felt the connection itself in curiousity, but it wasn't hot to the touch. Do you also think a somewhat small self-tapper to the body would be sufficient for this system as a grounding location to the body? P.S. I used 4 awg ofc wire from my old amp setup to just test out the amplifier when I first got it (which I know is a terrible idea), and it drained the battery a [B][U]lot[/U] [/B]more and never really drew more than 100 amps because that is what it was fused at. I understand voltage drop and such causing some of this, but I feel that a properly grounded 4 awg wire shouldn't be doing better than this current wiring I have. What do you guys think the solution/problem is? Thank you! [/QUOTE]
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Amplifier Cutting Out, but No Voltage Drop
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