Hi qubodup, About the rechargeable battery's; I stopped using them because; two normal bat = 3.0 - 3.2v power at start two rechargeable one's = 2.4V power MAX It could effect the performance of your mics and amplifier in the recorder. Your work is to good for that. :-)
Hey I need an explosion for my audio drama a huge college blows sky high as a bomb had been fictionally implanted under its surface! The rumble goes for a long time. I would love to have something like that!