Different Subs Tuned Differently?

[timkirkland1]

Hey All, it's me again. Well I just finished my buddies box for his 3 MTX TR7515-44's (3 15's) and he already blew one of them, so he is thinking of getting the 8500's instead of the 75's. How will the speakers perform in the box for the 7500s? Should I build a new box, or will the performance not be affected? Any help would be great. Thanks for everything!!

Another quick question, how do you choose how big to make the box?? Is there a similar process to the port calc as to choosing the best cubic feet for a particular sub??

[Forevrbumpn]

not recommended to mix match subs, this is the MOST COMMON question asked on SMD next to

"Does this make me a ground pounder?"

"What sub should I buy?"

"What amp should I buy?"

"What sub is best?"

But really, no, dont mix match

the speaker cones will move at different speed rates, the cones from the 75s, would probably ruin the suspension, or glue joints of the 1- 8500

Just don't go there

As far as speaker box building, there are many programs online that will tell you what is best.

But what to look for is, a Higher QTS subwoofer will need a larger box than a Lower QTS sub (thiel small parameters)

[timkirkland1]

But there is no way to tell approximately how big to build a box??

Another thing, maybe I am not understanding you or I didn't make myself clear. He is going to change out all the 7500s to 8500s, not going to run 2 different speakers.

[treossi]

hey guys i was wondering if this makes me a ground pounder

jk stfu