speaker stand/subwoofer

Good morning folks.First post and I am looking for advice on speaker stand and sub combo.
Speakers are Usher audio UA721 by Parts Express. 2 kevlar 7" mid woofers MTM design ,22" high x 9" wide. 4 ohm,38 hz bass response.
Room is 15 x 15 x 8 with 6' opening to kitchen.
Thinking 9"w x 24" high ,depth depending on needed volume.2- 6.5"to 8"woofers forward facing,with plate amp.Around 30 hz would be great.80% music /20% HT
Building cabinets is not a problem for me.
Something like PMC TLE1 size wise would be about right. Too bad I can't afford them in cherry.
So my questions would be driver recommendations up to $125.00 each ,plate amp,and not sure if sealed or ported is better for me? And how to find cabinet volume /port size if applicable. I hope this is enough information.
Thank you, Scott
 
Greets!

Depends on the music's genre, though ideally the entire system should be sealed with vented the norm for HT as an option if a really low tuned sealed subwoofer isn't in the size/$$ budget.

No clue what to recommend.
 
Again, basically using prosound drivers with Fs in the 35-45 Hz range in a vented cab or at the extremes, a horn and for the folks with the wider range RTR tapes that were usually just special effects such as steam trains with output below the 40 Hz recording norm, the 20-30 Hz Fs drivers.
 
Again, basically using prosound drivers with Fs in the 35-45 Hz range in a vented cab or at the extremes, a horn and for the folks with the wider range RTR tapes that were usually just special effects such as steam trains with output below the 40 Hz recording norm, the 20-30 Hz Fs drivers.
GM thank you,that clears it up for me.
Time for more research !
 
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