Is it okay to put 1 low QTS sub with 2 high QTS subs in the same box?

[icecreamxd]

So I had a passive radiator box made for me with 3 12" holes. I originally got the 12" Fi Q with the regular low QTS option. I put it in with 2 Tc Sounds VMP passives in the same box. One of the passives ended up being defective and blew the very same day. The rubber surrounded separated from the passive cone so there was an air leak in the box which made it sound even worse. Even when I heard it when it was working, it didn't really sound that great to me. Before this, I had 2 12" Diamond D6's in a sealed box closed chambers and it knocked way harder and it sounded way more tighter. I do like the sound of the Fi Q though, very smooth and has a lot of potential for sure. I prefer the sound of sealed so I decided to return the passives and bought 2 more Fi Q's to make it a sealed box. I chose the High QTS option and I Heat Ring for the 2 new subs. All 3 subs will be in a shared chamber about 2.5 cubic ft. My question is do you think it'll sound good with the setup I have? I don't really want to sell the sub to buy another one of the same sub. Maybe they'll blend in well together, I don't know really. What do you guys think will happen?

[Skullz]

I would not do it due to the fact it won't move as much as the others will and could even hurt the performance of the other 2.

You could use it as a passive radiator for the other 2 in the enclosure and see how well that goes.

[icecreamxd]

Yea that's I'm thinking too but I just don't know. Do you think Fi can convert my sub to a high qts if I send it to them? I already asked them but they haven't replied back.

I already used passive radiators and I didn't really care for them too much because technically they are ported. I really like the sound of sealed, which is why I'm going with this route. I'm going for all SQ.. as I do listen to a wide range of music.

[Tecomah]

I think, although I may be wrong that you may have to recone the sub to change the qts option.

[Tecomah]

I think, although I may be wrong that you may have to recone the sub to change the qts option.

let me reiterate I don't know for sure so don't flame me if im wrong