If you have 300+watts for each one, I would build a fast and dirty sealed box for 'em just to hear what you can get out of them in your car......even Pioneer's spec page for them only lists the recommended sealed box size, nothing for vented....

New drivers may blow your $250 budget to shreds.....if you can sell these plus the other subs you got in your bulk buy you might get in the zone for gently used, much better ones.....

Just a thought.....if you don't have a suitable box for the test I might be able to find one that would do for it.

HTH

 

agreed. i would deffinatly throw them in a sealed enclosure (around 0.85 cubes per sub)

 

Yep. Nice thing about most Pioneer drivers is they sound almost the same over a wide range of box sizes. 1.5-2cuft for both, sealed, should sound decent.

 

......The Dukk of ported endorsing a sealed box??.......be still my pounding heart....

Mr MC, IIRC there is a box in my garage that would serve the cause quite nicely....

LMK if you want to try it out.

 

Aperiodic Bi-Chambered enclosure.......there is a good tutorial here and another discussion thread with more links on this board here.....

HTH

 

I'm wondering if someone high-jacked Dukk's account . . . something just doesn't seem right about that recommendation coming from him.

Thanks . . . what does IIRC stand for?

If I'll be in the area some time soon, I'll take you up on that offer. but for now, I have no plans of leaving the Niagara region.

In regard to these pioneer subs, I don't want to spend time with something that I shouldn't port, so I've put the subs up for sale.

I think I'll work on getting the pair of Rockford P210D4s working and I'll build a ported box for them . . . now I'm pretty sure I can't ABC them as their qts is 0.51, but with an fs of 30, I'm confident I can port them.

 

yeah yeah yeah... I said it...

Honestly, with an FS that high, what's the point?

Dave - while I'm sure the links have jogged your memory, if you ever dealt with Pez, he used to market them as a Tri-Tune box. Some people call them a dual chamber reflex or similar. I made up the name ABC.

 

I just got off the phone with a tech at MTX looking for the specs of the MTX TC710 . . . It has an FS of 47 !

Yet, it has an EBP of 59.5, so it can be used in a ported.

I mentioned to the that I wasn't comfortable tuning a box lower than the fs of the sub, and he said that "The suspension on the sub allows the sub to play much lower than the fs with no problems. Where you run into problems is when the sub plays lower than the tuning frequency of the box."

I am so confused about how these things all work together right now . . . He recommended tuning it to 35 in a 1.45 cu ft box . . .

Here's the specs:
qes: .79
qms: 4.95
QTS: .681
FS 47hz
vas 12.6 l
xmax: 16mm

So, with that being said by the MTX tech guy, how can I know that its okay to tune below the FS of one sub, but not the FS of another?

 

Hmm, interesting what a search can find you:
I followed this calculator with a few different drivers and there were a few times that I ended up with a lower tuning freq than the FS