I’m still knee deep in propulsion sounds these days as I work on the next Rabbit Ears Audio Library. A recent recording session took me to the garage of a model jet airplane enthusiast. These planes might be small, but they pack a loud punch. Hobbyists who build these planes work with real jet turbines that are built to scale.
I performed a number of stationary runs of the turbine from several perspectives. This little turbine easily hit 115db at the exhaust, and I have no idea what kind of SPL it was outputting at the intake of the engine. IT WAS LOUD.
Here is the exhaust:
And the same take from the perspective of the air intake:
The intake has a much higher pitched whine to it, which I kind of dig. The SPL was so intense at the intake that I actually had to set that channel to line level to get useful material. I placed a DPA 4060 right in front of the intake, fed it phantom, but dropped it to line level. This can be a decent alternative to using inline pads.
I’m continuing to flesh out this collection and it continues to be ridiculous amounts of fun.
Recording Geek Note: Rig consists of Schoeps CMC5′s setup for MS, with the MK4 as the mid on the exaust and a DPA 4060 on the intake. It was all tracked to a Sound Devices 744T at 24/192.
I’m currently in the process of building a new SFX library over at Rabbit Ears Audio. I’m not exactly sure what I’m going to call it, but the focus is jet propulsion. Most recently, I connected with some folks who build their own jet turbines. I love hobbies! Some people knit, some people play racquetball and some people build jet turbines.
One of the highlights of the session was this jet bike
This jet bike was completely built buy a hobbyist in his garage over a 5 year period. It is quite a remarkable feat and as you can hear it is quite a powerful sounding machine.
The above recording was made from a distant perspective and it is still incredibly loud. Early in the day we set up the bike for some stationary runs of the turbine and afterburner. There was also a decent sized hill behind me which added some nice reflections. You can hear the engine being ramped up and the pops at the end is the sound of the afterburner being punched in.
I’m still completely floored that this was assembled in someone’s garage. It certainly has made me question what I’m doing with my down time.
I’m tremendously excited about this library. I have a few more jets lined up before I will start pulling everything together, but this bike is definitely one of the more unusual items in the forthcoming collection.
Recording Geek Note: Rig consists of Schoeps CMC5′s setup for MS, with the MK4 as the mid. It was all tracked to a Sound Devices 744T at 24/192 with a Cooper CS-104 as a front end.