Vendor Catalog
Real specs from the brands that show up in builds. Drop a sub here into the Subwoofer Box calculator and the recommended volumes fill themselves in.
This is a spec reference, not a storefront — to buy, head to JS Ultimate Sounds or grab a member discount code first.
Brand
Category
JS-Alternators
High-output alternators hand-wound in the USA.
Hand-wound high-output alternators for car audio, offroad, and emergency vehicle use. Real engineering, real warranty, real US support.
Visit JS-Alternators →