Thesubstantial 200mmpulpcone wooferisused withtwo25mm softdometweeters which featureFerrofluidcoolingandelectronicoverloadprotection for extrareliability.
As many as 15 percent of the 5, 000 previously approved welds in the reactor's auxiliary plumbing, containment dome and spent-fuel cooling systems were X-rayed and found to be defective due to air pockets, poor soldiering and heat damage.