Hello Craig and welcome to the Cow Audio Forum,
Couple of questions. When you say the FP 33 is too hot for your PD170, how are you calibrating the two?
The FP33 manual says begin tone and set the master for a 0 VU reading, then adjust your camera audio input controls.
The FP 33 manual also says clipping occurs at +18 dB on the mixer and that you can set the limiter from 0 to +17 dB.
Call me crazy, but here’s what I’d try if I had your rig here.
Set the limiter threshold of the FP33 at +14 dB.
Set tone on your camera with the mixer master set at 0 VU. Now, DON’T CHANGE THE MASTER. Leave it at 0 VU.
Adjust your camera audio inputs to -18 for the tone.
With this calibration, I “THINK”, you’ll run out of headroom on both the mixer and the camera at the same place. And, setting a +14 threshold for the mixer’s limiter will knock down the audio to the camera a bit more. Some limiters sound better than others. Shure’s on the later models sound OK. But I haven’t heard an FP33 in a long while.
Some sounds like hand claps, tongue clicks, three-ring binder opens and closes, etc., will probably sneak through the limiter. By setting the threshold at + 14, you still have another 4 dB as a safety net before the mixer clips at +18 dB.
To find out if the limiter sounds OK, after setup, stick a boom mic right in your face and talk. Turn it’s channel up enough light the limiter light. Also check the camera meters to see if they are OK. If it all works as I THINK it might, the limiter will catch the peaks, the camera inputs won’t go into distortion and you’ll get a chance to hear how good or bad the FP33 limiters sound. (I tickle the limiters on my Sound Devices 442 and those limiters sound very good.)
Your VU meters may be pegging, but more importantly, watch the peak meters on the mixer, listen to the audio and watch what happens at your camera input meters. Your big concern is not VU level, it’s what the peaks are doing.
Let me know if you try this and what the results are.
Regards,
Ty Ford
Want better production audio?: Ty Ford’s Audio Bootcamp Field Guide
Watch Ty play guitar