Sound Devices regularly receives questions about specific production applications. Below is typical question relating to dual-system sound for music production with a Sound Devices 552:
To provide the extensive control and flexibility provided by the 552, its high-performance analog circuitry is infused with numerous control types. Digital control of analog signals provides the circuit designer with the power to offer features that analog alone can't offer. The mix of different control types for gain in the 552 include analog potentiometers, digital potentiometers, analog switches, micro-relays, and physical switches. Each location in the circuit where gain is controlled is described below.
The introduction of the 552 mixer brings a powerful new feature to field mixers, a high-quality integrated audio recorder. It is unquestionably convenient to have a built-in recorder with a field mixer. With the addition of its recorder, one question that comes up is whether the 552 can be substituted in place of a 7-Series recorder. The short answer is...yes...and no.
The following tech note describes how to copy individual files from one storage media to another from within the 7-Series Recorders. There are two slightly different methods, one for the 788T/788T-SSD models, and one for 702, 702T, 722, 744T recorders.
Each input on the 302 mixer has a two-position high-pass filter. High-pass filters allow high frequency signals to pass while attenuating low frequency signals. High pass filters are useful at reducing wind noise, microphone handling noise, and room noise while having little effect on speech reproduction.