the powerstroke heads def add bass. have 20" coated on my gig kit, and it sounds good, tunes easy. didn't know they had a smooth white. that would be cool. sometimes the stores just don't have the selection. probably time to start shopping online.

What is a flowbeam??

Lucky: sorry brother i was answering two questions one was from a pm to me. a flowbeam is a snare drum strainer system that premier had back in the day!

Humidity, hum? Well it's a wood shell, so a certain amount of moisture will be absorbed (or drained) from whatever enviroment the kit is in. You can't stop it. Moisture will effect how crisp or warm it will sound but NOT make it sound deeper.

It's a 20" (X 14"?) BD how much of a deep tone do you think you'll get out of it? You can't make a 20" shell sound like a 26". Tune it as low as possible then tune the rest of the kit (up) to it.

If it's not deep enough for your tastes or expectations, buy a larger sized kit.

Dry wood is more resonant than moist wood, not less. Ask anyone with a fireplace and firewood.

Water dampens vibration.

What a drum might sound like to the player on the kit often sounds completely different to someone at a distance. Often those overtones are the projection of the drums tone. So from say ten to twenty feet away the drum might sound just perfect. I've also had drums sound perfect from my position which sound dead from the audiences point of view or won't cut through the band.

I was doing some work for a new songwriter the other day and while setting up my kit I tested the 20 x 14 kick sound, and standing beside me he said it was definitely too ringy and needed muffling. I said "sure" and sat some muffling in the reso port. As I played the muffling gradually popped out, he later commented on how remarkably good the drums sounded, looked over and with surprise realised there was no muffling in the drum.

I used an Evans EMAD (batter; comes with two different damp. rings) on a an 18" Ludwig New Classic BD, with the original clear Ludwig reso head, that provided a nice deep grunt and nary an overtone. Throw an EMAD reso on the front and you probably wouldn't need any dampening on the reso. The Evans EQ3 reso is another good choice for control. The Evans site has a tutorial on BD head tuning. (No, I don't work for them.) Evans now has a GMAD, 12mils vs the EMAD's 10. Tinker, enjoy.

Well, it ain't vintage sound, boomy and resonant, but if you want a low strong bass, i'd go evan eq3 clear on front, and eq3 with hole (for pillow tweaking) on resonant side. A bit dry...but low. Tune low. good luck

You might also consider if you're seating the head evenly. An improperly seated head can produce overtones and be more difficult to tune. Sometimes it will take me more than a few times to seat the head right and it will dramatically affects tunability and sound.

You can also lay the shell on a FLAT surface, and, with lights out, put a flashlight in the middle of the shell. You can quickly see if there are imperfections, the light comes right through. I've done this many times and if I can't fix it, I'll send it out.