This is the Bolex blimp for the H-16 I just bought off of eBay. It’s a pretty fantastic find. It came with a motor inside for continuous filming. I created this sample video to give an idea of the noise reduction capabilities of the Bolex blimp. In the video I have the motor running with the top on and then I pull the top off so you can hear how loud it is without the top. Then I run it with the top on. My camera was less than a foot away from the Bolex blimp.
The motor that came with this Bolex blimp would taint any audio for your film if you didn’t use a blimp with it. It’s really hard to show how this thing really sounds in real life. It’s funny the only thing I can really compare the volume of the naked motor to is the motor on my vintage Rain Lamp which uses a small pool pump. :)
The motor the Bolex blimp came with would definitely need to be cut out in post if used outside a blimp but covered inside the blimp, its more like a low hum and I don’t think it would be picked up at all with a directional mic but would be picked up by a lav although probably wouldn’t be too noticeable with good sound design. I also add a low level hum to my films anyway.
With the current motor, it vibrates more on a tripod sitting on carpet and the hum is louder. But I think if I can get my camera in this with the Tobin or MST motors it will be silent. The Tobin motor is definitely quieter than the motor this thing came with. It’s just a matter of if it will fit.