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<blockquote data-quote="1000101" data-source="post: 8752425" data-attributes="member: 593073">I have a 2015 Silverado 2500 with a beefed up power system (at least I thought).My Voltage starts at ~14.7V and when I bump it gets all they way down to ~12.4.YES it recovers pretty good.. but I shouldn&#039;t be breaking under 13V PERIOD !What&#039;s your thoughts here...? I&#039;ll list the basic components of my setup...below:(I can provide a detailed schematic if needed).1. 320 AMP Iraggi Alternator w/Big 3 (Actually Big 4). ALL GROUNDS CHECK 3x2. 4000W RMS Memphis Amp (Running at 2000 W RMS at 2 Ohms)3. ~500W RMS Memphis Mojo Amp (Running Mids/Highs).4. 1 Memphis Mojo 12&#039;&#039; 1500 RMS 3000 Max5. 2 (Yes Two) Yellowtop Optima AGM D34/78 (750 CCA 55Ah = 110Ah).6. ALL WIRES are GP Audio 0 Gauge wires.I checked for clipping and I&#039;m not clipping. I have the GAINS on the 4k Amp ALL THE WAY DOWN. Overall everything sounds ok, I just get such a large voltage drop and EASILY.The only thing I can think is that I need to increase the (aH) by adding an additional battery. OR Maybe I&#039;m having a PCM issue (with these newer vehicles) the <a href="http://www.usalternators.com/pcm-module/" target="_blank">PCM Module | US Alternators</a> PCM <a href="http://www.usalternators.com/gm-pcm/" target="_blank">http://www.usalternators.com/gm-pcm/</a> may be my resolution? The PROBLEM is that the alternator should not even remotely struggle or have to even use the batteries period. Especially since I have my gains all the way down. (I checked 1x with a Clamp Meter and when at ~12.6V it was outputting 16-40A Max.) (Aka not struggling etc).PLEASE HELP !!</blockquote>

[QUOTE="1000101, post: 8752425, member: 593073"] I have a 2015 Silverado 2500 with a beefed up power system (at least I thought). My Voltage starts at ~14.7V and when I bump it gets all they way down to ~12.4. YES it recovers pretty good.. but I shouldn't be breaking under 13V PERIOD ! What's your thoughts here...? I'll list the basic components of my setup...below: (I can provide a detailed schematic if needed). 1. 320 AMP Iraggi Alternator w/Big 3 (Actually Big 4). ALL GROUNDS CHECK 3x 2. 4000W RMS Memphis Amp (Running at 2000 W RMS at 2 Ohms) 3. ~500W RMS Memphis Mojo Amp (Running Mids/Highs). 4. 1 Memphis Mojo 12'' 1500 RMS 3000 Max 5. 2 (Yes Two) Yellowtop Optima AGM D34/78 (750 CCA 55Ah = 110Ah). 6. ALL WIRES are GP Audio 0 Gauge wires. I checked for clipping and I'm not clipping. I have the GAINS on the 4k Amp ALL THE WAY DOWN. Overall everything sounds ok, I just get such a large voltage drop and EASILY. The only thing I can think is that I need to increase the (aH) by adding an additional battery. OR Maybe I'm having a PCM issue (with these newer vehicles) the [URL='http://www.usalternators.com/pcm-module/']PCM Module | US Alternators[/URL] PCM [URL]http://www.usalternators.com/gm-pcm/[/URL] may be my resolution? The PROBLEM is that the alternator should not even remotely struggle or have to even use the batteries period. Especially since I have my gains all the way down. (I checked 1x with a Clamp Meter and when at ~12.6V it was outputting 16-40A Max.) (Aka not struggling etc). PLEASE HELP !! [/QUOTE]

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