I took delivery of my HSU VTF 3 MK3 last Wednesday and I was finally able to get it dialed in. The sub sounded good at first but it did not sound great. I was getting this annoying pop on low frequencies in movies like War of the Worlds. After messing with the port options and placement I was about to give up, but I stuck with it.
After hearing many great things about the MK3 I knew that the issue had to be user error so I contacted Pete over at HSU. He helped me dial the sub in to where it sounded really good but I still had the pop.
Pete then asked me to toggle the EQ off on my Pioneer 1120 so I did. DING! After turning off the EQ on my receiver this sub kicked me in the chest so hard! It was like I freed the bass god and he began to pressurize my room with glorious deep solid clean bass!
I kid you not, my room felt like it was shifting with the cracks on the floor in War of the Worlds chapter 5. Iron Man 2 was INSANE and most importantly the pop was gone!
My biggest advice I can give is cut off the EQ so you can see how it sounds before the signal is touched. I am running it with both ports open in 25hz mode. The sub volume is set to 1.5 and the receiver SW level is -1. At this level my room is totally covered with the MK3.
I have a way more expensive sub from a well known sub company in my main home theater and I am thinking of selling it and getting a HSU ULS-15 to replace it.
Here are some picks of the sub in my gaming room.
Thanks Pete and everyone here who helped me pick out such a awesome sub. I really wish people can audition these subs because there will be no way you would leave without buying it.