User Guide for morel models including: 210MU603A, 210MU603A, 210MU603A Car Audio Component Speaker System, 210MU603A, Car Audio Component Speaker System, Component Speaker System, Speaker System
Morel Maximo Ultra 603A MKII Maximo Ultra Series 6-1/2" 3-way component speaker system — designed for use with an active 3-way crossover network at Crutchfield
Morel Maximo Ultra 603A MKII at Onlinecarstereo.com
The Maximo Ultra MII 603A is an "active" component speaker set requiring the use of electronic crossover and six channels of amplification.