I have an old kustom 215 cab that i got in a pawn shop. The speakers were not the stock speakers they were some off brand rated 50 watts. I am going to replace the old blown speakers & put it to use, because it has been collecting dust. I am getting a 300 watt head in the near future & want to know if it would be safe to use 2 eminince delta 15a's (rated at 400 watts). will running 300 watts to a 400 watt speaker damage anything? if it will can you sugguest a cheap decent sounding 15 that is 300 watts?