I wanted to introduce myself, my name is Erick and I started a new shop in Columbus last year called Phase Three Audio. We do more big custom systems than anything else. My next project for one of my customers is a Mustang with a wall of two 18" Atomic 5000 watt rms subs and two DD Audio m4 5000 watt amps. I like building big badass sub boxes. If you are local and need one built let me know. I build my boxes with precision. I use primarily one inch MDF and quality wood glue and screwed together. I use right angle clamps to ensure all the angles are perfectly square. I have a retail location but we are currently by appointment only temporarily.