These pics - taken early in 2008 - show the current mic rig I'm using.
I've since moved the clips holding the microphones forward to allow the nose of the mic to be positioned closer to the front edge of the barriers. The mics are positioned 20mm back from the front edge at present.
The outside faces of the barriers are approximately 120mm apart which is roughly ear drum spacing.
The rig was originally built to replicate Curt Olson's "reverse wedge". After email discussions with Curt and Rob Danielson of the Nature Recordists email list, I altered the rig to the current parallel configuration.
Curt's "reverse wedge" is described on the following web page:
http://www.trackseventeen.com/soundscapes/mic_rigs.html
Click on the thumbnail views will open a larger image in a pop-up window.
This recording was made from a balcony overlooking a mature fig tree at Padaminka near Walkerston in Queensland.
The recording isn't pristine as Padaminka is surrounded by sugar cane growing properties and the harvest was in full swing from at least 5.30am, and you can also hear figs dropping onto the tin roof of a shed.
The recording was made with Tascam HD-P2 digital recorder and a pair of AT-3032 microphones.