It then passed through a set of galven coils located in the turbolaser's barrel, even further increasing the beam's power, and allowing it to pierce the defenses of heavily protected targets. Because these weapons required extra time to build up energy for their powerful blasts, they tended to have a slightly slower rate of fire than their weaker brethren (usually around one to two seconds between volleys, depending on the type of turbolaser and what power setting it was on). The risk of overheating was high due to this massive energy buildup, and many turbolaser models were protected with complex cryosystems and a powerful cooling sleeve on the barrel.