Scumback Speakers is a guitar speaker and cabinet maker based in Prescott, Arizona, founded by Jim Seavall in 2004. The company grew out of Seavall's years of collecting and studying vintage Celestion "Pre-Rola" and "BlackBack" speakers, with the goal of reverse-engineering the tonal character of late-1960s British stacks. Scumback's catalog focuses on ceramic-magnet 10" and 12" speakers across the M, J, H, and BlackBack series, with power handling options ranging from roughly 25 to 100 watts.

Beyond loose drivers, Scumback offers loaded extension cabinets, reconing services, attenuators, and hardware such as metal handles. The brand maintains an extensive library of sound clips on its site so players can audition models before buying, a practice that has helped it build a reputation among tone-chasing guitarists in online forums like Rig-Talk, The Gear Page, and Z-Talk. Players such as Kirk Fletcher and Peter Thorn have been associated with the brand's development and demos.

Scumback has 2 products cataloged on Equipboard, including Speakers & Accessories and Guitar Amp Speakers.