Brandt Sleeper takes you through its ins and outs, and shows how it stands up to the rigors of real-world production. Enter: the ProMix 6. Heritage is key as the ProMix 6 harks back to a long line of industry standard portable audio from PSC. Arguably, the granddaddy of 4-channel mixers, the ubiquitous M4 established the M-series dynasty that pioneered the way for the benchmark Alphamix.
This lineage has established PSC as a household name and has spawned a host of competitors including Wendt and Sound Devices. Yet, as industry changes … so industry changes industry. Several years ago DV tenaciously invaded the marketplace and while it was eventually embraced as a viable visual platform, sound professionals continued to wage countless battles against the limitations of DV audio. In addition, there is a screw driver trim pot control located just below the meters that allows for adjustment of meter brightness.
These meters read and respond to the peak level of the audio signal. The LEDs are multi colored to allow quick visual checking of the meter levels. Thus you can just give a quick glance to the meters and determine if your audio levels are too high by noting the color present. On the lower right hand corner of the front panel is the main power switch.
This switch controls all of the power used to operate the ProMix 6 audio mixer. In the center position, the mixer is turned off. This indicates proper operating voltage is present in the internal batteries or the external power source. When the batteries get low, these two blue LEDs will begin blinking. This blinking condition indicates that the batteries useful life is nearly over and you should stop and change your batteries soon. Actual remaining battery life is dependent upon use of the mixer, number of powered condenser microphones being used etc.
You can typically expect 15 to 20 minutes of remaining run time once the blue LEDs begin blinking. This button is momentary and thus the slate microphone will only activate for as long as you press the button. There is also a slate microphone volume level trim pot located just to the left of the slate mic button.
The ProMix 6 audio mixer is equipped with a reference tone oscillator that is used to provide a reference tone level for production editing. This tone oscillator puts out a Hz tone at 0dB on the meters. At the beginning of each tape or at the first use of any other audio storage format, you should record a 15 to 20 second burst of reference tone. This tone will be used later in post production to set proper audio levels for subsequent transfers and is used to keep audio levels consistent among multiple cameras.
The ProMix 6 audio mixer is equipped with switchable output limiters. The control switch for these limiters is located on the right hand side of the front panel between the tape return monitor switch and the power switch. This position is used most often when you have an interviewer panned to one output and the interviewee panned to the other output.
If a high level signal on either limiter input causes one of the limiters to activate, both limiters will activate.
This type of limiting is normally used when recording stereo signals. By keeping the limiters ganged together, the overall stereo image will not appear to shift when limiting occurs. It is highly recommended that you use the output limiters at all times. This will serve to protect your recording from unexpected audio peaks that would otherwise overload your recorder and ruin the sound quality of your recordings.
On the right side of the front panel there is a rotary switch that is used to control what you monitor on your headphone outputs. The left headphone is fed a signal from the left output and the right headphone is fed a signal from the right output.
Located directly above the headphone selection switch is a headphone volume control pot. This pot raises or lowers the volume of the audio signal going to your headphones. Turning the pot counterclockwise will lower the volume. Turning the pot clockwise will raise the volume of the headphones.
Turning the pot fully counterclockwise will turn off the headphone volume completely. Please note the headphone volume safety warnings at the beginning of this manual.
Operating this mixer with too high of a headphone volume setting may cause permanent hearing damage. You are fully responsible for your own hearing protection when using this mixer as we do not have control over your operating 11 environment, headphone type and use, operating levels, microphone type, etc. Remember, your ears are your livelihood, Turn it Down! Please also note to turn down the headphone volume each time before you plug in your headphones.
Right Side Panel View. This robust three-channel mixer is battery operated for portability and provides very high quality audio in a compact and lightweight package.
The three channel design is built in a robust aircraft-aluminum case. A switch selects tone to the main output for testing and line-up. On one side panel are three XLR inputs, which are electronically balanced. Each has a switch to apply 48V phantom power. Three 3. The rear panel has two battery holders to take 9V PP3 size alkaline batteries, a co-axial socket for external DC input and two trimmer controls to set the left and right tape return levels.
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