Kent Staubus , Sep 01, 2009; 09:59 a.m.
Here's what is going on. You fire the flash, and it dumps a LOT of energy through the flash tube all at once. The four AA batteries then begin reloading electrons into the flash's storage tank, called the capacitator. It takes about 6 seconds for the flash to recycle. This is normal. One way around this is to set the flash at one quarter power level (manual mode.) Since you won't be dumping all the electrons out of the "tank", it won't take the batteries very long to refill it. You should be able to fire about one shot per second with the flash on quarter power. A Pocket Wizard will do nothing for you. A bigger battery might, but here's the deal on that. If you hook a big battery up, sure it will refill the tank much quicker. However, if you start hitting the flash POP-POP-POP-POP, you will fry it very quickly. If you often need these kinds of high powered fast flash pops, your answer is a B400 monolight. You can POP-POP-POP it all day long. It's built for that. The SB-600 is not.
Kent in SD