box for 3 ppi pcx102's

[ppiflat10s 3]

alright, this isnt really about the subs in general, but I am not starting a build log right now so figured this is where it should go.

I recently picked up a trio of ppi pcx102 dual 2 10" flat cones. I am going to wire them to a 1.33 ohm load, got a few ideas on amps but am wondering about how much power I could give to them. they are rated at 250 rms but was wondering if they could possibly handle a little more as long as its clean?

I have more than this but am willing to devote about 5.5 cubes before port and sub to this build. I dont think 3 10s need that much air, but I have it if needed. subs will be forward firing for no other reason than the fact that I can then throw whatever in the trunk whenever and not worry about the subs. it will be in a 93 accord sedan.

I am thinking of trying sealed but am going to build my box in a way that the back sits inside of longer top/bottom/sides so that if I think it isnt enough I can move the back farther and throw a port on the face, and if it is enough then cut the top/bottom/sides right after the back piece to shrink the box.

I was thinking of trying out about 2.7 cubes net sealed and then about 4 cubes net tuned at 33 w/ 50in^2 of port area. if sealed should it be seperate chambers?

the smaller sealed box will handle more power, correct? I am going to have a SSF on whichever amp I get in case I do port them.

Im thinking of getting a nice 1200 watt amp just in case I want to upgrade some day. deck is a panasonic 903.

Im going to put my 4 channel under my passenger seat, is it acceptable to run 0 to there, a d block with 8 to the 4 channel and 4 to the sub amp since I wont be cranking out near the 1500 watts possible from the underrated 1200's floating around.

I guess my last question could be what does everybody think of these subs? doesnt matter too much since I feel I got em pretty cheap. Ive seen one vid on youtube and they seem to hit pretty good although it was 4, not 3, plus it was youtube and who knows what it sounds like in real life. just guessing id say they have just over 1 cube each.

is it alright to have the port like that in relation to the subs?

[KU40 173]

I'm not familiar with the subs so I can't offer suggestions on box size.

Whether they can handle more power than 250 depends on the box. However I would not count on them doing so. Not because they aren't good subs, but because they were rated 250 for a reason.

If you build sealed it doesn't matter if you do common or separate chambers.

A smaller box will handle more power, yes. But don't think that just because you build a tiny box that you can put 500 watts on each sub. The increase in power handling in smaller boxes is of the mechanical variety, not thermal. The sub still has the same coil and cooling mechanisms in the motor. Smaller boxes are just able to handle more power before reaching mechanical limits because they have lower excursion for a given power input than a larger box.

[ppiflat10s 3]

so would I be correct in assuming a ported enclosure actually increases the subs power handling of the thermal variety, because in a sealed box the air going in and out of the pole vent cooling the coils is just stuck in the box getting hotter and hotter with no way to cool it except the MDF itself absorbing some heat and radiating it away, while a ported box will allow some of the heat to escape the port?

and with a ported box, a SSF helps the sub from.. "unloading".. right? not sure what that means but im guessing playing a tone far below the tuning frequency with alot of power will let the sub move too much, and so a SSF will help the mechanical "power limit", right?

about the amp, which would be most likely to actually put out its rated power. kenwood, Maxxsonics(Hifonics Brutus/Autotek Street Machine/MB Quart Discus), Planet audio, or diamond audio?

Im also watching a used BP1200.1, orion 1200D, and MM1400.1D