Superseven

This is my first post... What a great site! My 92 SC400 has the Nakamichi 280 watt sound system. My car had been sitting for about 3 weeks and when I got to use it again I discovered that the Left side (driver's) door speaker (midrange) and back deck midrange speaker don't work anymore. :cries: All other speakers work fine. The dead speakers don't put out any sound at all. Does this indicate that the amp is fried? Are these Nak amps repairable? Thanks for your help!