Considering changing

[BRiedman]

I'm honestly willing to spend much more than that. 1000 is just what I have today.

[Weigel21]

Well, those subs you got are rated at 2K each (some reason I was thinking 1500RMS) and I've heard they can take rated power. So, you have 8K worth of subs. Amplifer you have is rated at 2500RMS@1 ohm with a healthy 14.4V input voltage.

So, I'm off, you're likely feeding those subs 1/4 of what they can take.

One area of concern, other on here may be able to confirm or disprove and put my mind as ease, but with that one sub you had to replace, it's not the same as the others. For one, it's newer, so it didn't break-in at the same rate, not to mention, some of it's T/S Parameters could well be different and if so, that can have a negative impact on the output with the other subs. Not sure if you'd be "better off" powering just the three older models in a new enclosure at 1.3 ohm or pressing your luck at running them all at 1 ohm. My concern is how the newer model may perform slightly different than the older models and thus have an increased issue with cancellation.

Yeah, an 8K, or even 6K system is going to need a beefy electrical system to back it up, there's just no way in hell a stock electrical system can support such.

As for an amplifier that powerful, I know not of any that powerful myself, but that's because I've never had an interest in such a powerful setup and I've personally never been around anyone with that powerful of a setup. About 4k is the largest system "I" have personally been around.

[g2shuck]

Ct sounds 7k, dc 7.5k, or sundown ns1 for sub amp. Major electrical upgrades and a good 4 channel amp for mids and highs would be my suggestion.