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<blockquote data-quote="Grinder1989" data-source="post: 4101936" data-attributes="member: 573303"><p>I&#039;m running a US Amps VLX-400 on a single 15&quot; sub @ 1.4 ohms.&nbsp; I&#039;m getting around 2k out of my amp.&nbsp; I also had a USA-150 on some tweeters and I didn&#039;t dim at all with a 140 amp alt and a yellow top.&nbsp; My new setup will be the VLX and a PPI ProMos-450.&nbsp; I&#039;ve ran a Sundown 1500D on the 140 amp alt and a wet cell and was dimming slightly losing around .2 to .3 volts when the bass hit.&nbsp; I also had a small Targa 4 channel for my coaxials&nbsp; when I had them.&nbsp; I loved my Sundown and if that VLX hadn&#039;t come up I wouldn&#039;t have got rid of it.&nbsp; I would have loved to see how it did with the yellow top.&nbsp; IMO with the correct electrical, class A/B vs. D doesn&#039;t really matter.&nbsp; Yes D is more efficient and excellent for competition or cars with a crazy amount of subs, but A/B, especially the old US amps, PPI, and Orion amps can perform just as good as class D&#039;s if you keep them fed.&nbsp; I don&#039;t have a preference, but I miss my Sundown.&nbsp; Just get what you can afford and what works for you.</p></blockquote><p></p>

[QUOTE="Grinder1989, post: 4101936, member: 573303"] I'm running a US Amps VLX-400 on a single 15" sub @ 1.4 ohms. I'm getting around 2k out of my amp. I also had a USA-150 on some tweeters and I didn't dim at all with a 140 amp alt and a yellow top. My new setup will be the VLX and a PPI ProMos-450. I've ran a Sundown 1500D on the 140 amp alt and a wet cell and was dimming slightly losing around .2 to .3 volts when the bass hit. I also had a small Targa 4 channel for my coaxials when I had them. I loved my Sundown and if that VLX hadn't come up I wouldn't have got rid of it. I would have loved to see how it did with the yellow top. IMO with the correct electrical, class A/B vs. D doesn't really matter. Yes D is more efficient and excellent for competition or cars with a crazy amount of subs, but A/B, especially the old US amps, PPI, and Orion amps can perform just as good as class D's if you keep them fed. I don't have a preference, but I miss my Sundown. Just get what you can afford and what works for you. [/QUOTE]

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