Check the listing for details. Remo Powermax 2 Ebony Crimplock Marching Bass Drumhead - 14 inch. Condition: New. Listed at 53.99 USD. Bodacious Bass Drumheads for All Marching Applications The Powermax 2 Ebony Crimplock Drumhead from Remo provides marching band performers with a responsive, stable head with loads of focused attack and great tone. The Powermax is constructed with two plies of 7mm ebony film and a free-floating muffling ring that enhances attack and optimizes tone control. Plus, the high-tension Crimplock hoop provides a wider tuning range and increased stability — features that any marching performer will love. Sweetwater marching bass drummers continue to be big fans of Remo drumheads due to their excellent quality and stellar tone.