This one appears to be from the "Road Ready" series... The "Diesel" series didn't have the front panel to close/protect the speakers, or the aluminum trim. Otherwise they are basically the same design (TL606 x 2, basically)
Likely from late 90s... '98 -'99, methinks.
Last edited by ScottTunes : 12-15-2013 at 05:18 AM.