I always do a dry run. put the bolts through the woofer hols and make sure the holes are lined up, then take the woofer out, mount the t-nuts on the underside then tighten them up until the teeth are partially in. That way you don't strip them trying to get them to dig into the MDF which is pretty tuff/hard stuff. Once they are partially seated, I remove the bolt and use pole style wood clamps to compress them the rest of the way into MDF, a bit of work but then thy stay and the threads are good! Be sure to drill the holes the correct size so that the teeth don't spin on you.
As for amplifiers, totally a personal choice.
SSA only has one that puts out more than 2200 watts
ZC6000.1 1600W RMS Mono Block Introducing the all new SSA ZC6000.1 amplifier. Kicking off the new Zcon premium mono block amplifier line up, the ZC6000.1 i
www.ssaudio.com
Syndown Salt is a really nice amp (not owned it but has a good reputation)
Digital Class-D Amp With Dual Power Supply Sleek Look That Has a 180 Degree Variable Phase Shift Variable Bass Boost with Subsonic and Low pass Filters Wired Remote Control with Voltage & Temperature Display and Clipping Indicator Dimensions : 22.05” L x 8.67” W x 2.80” H Sundown Car Audio 4000W...
bigjeffaudio.com
You can also bridge a pair of these for about $400
DD Audio
M5000 - DD Audio Digital Designs Monoblock 5000W RMS Amplifier. DD AUDIO continues to redefine the venerable M Series with revisions that greatly improve power and efficiency without increasing unit size.
Then there are Brazilian (manufactured in) amps too
Find many great new & used options and get the best deals for Taramp's Smart 5 BASS 5000W Mono Channel Amplifier at the best online prices at
eBay! Free shipping for many products!
Soundigital SD5000.1 - 2 Ohms EVO 5 5000W. • Power @ 12.6V @ 2Ohms: 1 x 5000 W RMS. • 01 SoundDigital Module 5000.1 EVO 5 - 2 Ohms. • Power @ 12.6V @ 4Ohms: 1 x 3300 W RMS. • Power @ 14.4V @ 2Ohms: 1 x 5575 W RMS.
Korean Brands/models/lines that I have personal experience with and that I like as well.
DS18 EXL-P4000X1D – 1 Channel Class D Car Subwoofer Amplifier – Monoblock Amp. DS18 EXL-P4000X1D – Korean 1 Channel Class D Car Subwoofer Amplifier – Monoblock Amp. DS18 ZXI-464 4x6 2-Way Coaxial Car Speakers with Kevlar Cone 120 W 4-Ohm Pair.
DS18 HOOLIGAN H-KO8. The DS18 H-KO8 amplifier is a high-performance, Korean-made powerhouse that's perfect for bassheads who demand the best performance from their car audio system. With a maximum power output that's actually underrated, the H-KO8 is capable of driving even the most demanding...