HybridNistico

Thanks for your suggestion! If I do more testing and see significant voltage drop, I will try bypassing the isolator. The more and more I read and research, impedance/box rise is inevitable, and the best way to combat it is usually to use an amp that's "overbuilt" for the subwoofer setup... e.g. putting perhaps a 7.5 or 10k on my single 18". Maybe this will prompt an "upgrade", lol. I've also started to research amplifiers that put out a broader range of power at 1, 2, 4 ohms etc. vs. the Korean amps that peak hard at 1 ohm. Lou

Thanks so much for your reply. This is just a musical system in my daily driver. Will do some additional testing with results to be posted here soon, but disheartened to be able to see 2,500 watts at 60hz (which I never play) and then such low numbers at 40hz and lower (which is what I primarily play). I hear what you're saying about the Cyber 6K, but I feel like I'd be surprised to see much of a difference by going to a Cyber 12K or by adding an additional 6K. I also forgot to mention that the truck is running on an AGM under the hood and I'm using a Stinger isolator to keep the batteries separate during non-use.

Hey guys, I'm not sure if these forums are completely dead, but I'm going to give this a go. I'm looking for help. Here is a rundown of my setup: 2017 Dodge Ram 1500 Crew Cab Sport Big 4, Singer 300A alternator, Limitless Lithium 6K, all 2/0 wiring, solid grounds OEM head unit w/ PAC AmpPRO 6-channel integration/RCA outs DC 5K and DC 90.4 JL Audio 3 way separates up front, JL audio co-axials in rear DC Audio Level 6 18" in a Kerf Customs 5.5' cubic foot box tuned to 34hz (dual 2 ohm in parallel for 1 ohm mono load) Doing 148.2 on the dash at 33-34hz I recently started playing with an SMD AMM-1. Prior to the AMM-1, I was using a clamp meter and multi-meter to get an approximate power level going to the sub and figured it was around 1,500 watts which I wasn't thrilled with. Now, with the AMM-1, it's even worse because of the Power Factor calculation. At the end of the day, I'm seeing around 800 watts and *I think* 7-8 ohms at 40hz. At 60hz, I saw 2,500 watts at about 2 ohms. At 30-35 hz, I'm literally maxing out at 7-800 watts before clipping. Something is not adding up. I watched for voltage at the Limitless 6K, and starting voltage was around 14.2, and during the run, the lowest I could get it to drop to was somewhere in the low 12's. This was also surprising to see the Limitless drop to low 12's on voltage when it's rated for 6k+ watts, and it was happening during 7-800 watt runs. The system is pretty loud and gets violent in the cabin at 33-34hz, but I'm really wondering if I'm leaving *a lot* on the table by missing something huge. These numbers aren't adding up to me and figured someone here may be able to help me troubleshoot? Thanks so much in advance!