Rockford Fosgate AudioPhile LP-1 Owner's Manual page 19

ing a product to the factory should call (800) 669-9899 for a
Return Authorization Number. All shipments shall be clearly
marked with the Return Authorization Number on the outside of
the shipping carton.
Prices are subject to change without notice.
1-800-669-9899.
Rockford Fosgate:
609 Myrtle N.W.
Grand Rapids, MI 49504 (Receiving-speakers)