Overview: The Mackie ProFX12v2 is a professional
12-channel compact mixer with six mic preamps and a USB interface.
The Mackie ProFXv2 series mixers includes a new ReadyFX effects engine that
instantly delivers your choice of 16 effects. In addition, the ProFX12v2 offers
60mm faders, 3-band equalization for each input, and a stereo 7-band Graphic EQ
for the main or monitor mix. The mixer features a solid steel chassis with
rugged ABS side panels. Included with the mixer is easy-to-use Tracktion
recording software (via free download).
Main Inputs: The ProFX12v2 offers the following main inputs:
- Vita Mic Preamps (Ch. 1-6): Mackie's all-new Vita
microphone preamps are designed for live sound with higher fidelity and
tremendous headroom. Channels 1-6 are equipped with female XLR connectors
that will accept balanced mic or line level inputs from almost any type of
source. The mic inputs feature 48-volt phantom power from a single 2-way
- Mono Line Inputs (Ch. 1-4): In addition to female XLRs,
the channel 1-4 inputs have 1/4" jacks that will accept line level signals
from balanced or unbalanced sources. These 1/4" jacks share circuitry, but
not phantom power with the mic preamps.
- Line/Hi-Z Input (Ch. 1 only): The channel 1 1/4" input
features a Line/Hi-Z switch that allows you to connect a guitar to the input
without a DI box. With the switch pressed in, the input impedance is
optimized for direct connection. In the out position, channel 1's 1/4" input
becomes a line input like channels 2-4.
- Stereo Line Inputs (Ch. 5/6, 7/8, 9/10, 11/12): These pairs of 1/4" jacks may be
driven by stereo or mono balanced or unbalanced sources. They may be used with
just about any professional or semi-pro instrument, effect, or tape player. If
you are connecting a mono source, you should use the left (mono) input, and
the mono signals will appear on both sides of the main mix. The level for
each pair of stereo line inputs is adjusted with a single potentiometer.
- Inserts: On channels 1, 2, 3, and 4, single 1/4" inputs
are provided for connecting serial effects processors, such as compressors,
equalizers, de-essers, or filters. The signal can go out of the insert jack
to the external device, be processed, and come back in on the same insert
jack. (The insert cable must be wired as follows: Tip=Send, Ring=Return,
Setting Gain: Each input channel has a gain knob that lets
you adjust the input sensitivity. Nearly every level control on the mixer
features a "U" symbol to indicate "Unity Gain," or no change in the signal
level. For line-level signals, you can adjust the input sensitivity between
-20dB and +30dB. For mic signals (from the XLR connectors), the range of
adjustment is 0dB to +50dB. Level Set LEDs are provided to let you know if any
of the channels are distorting. A low-cut switch on channels 1, 2, 3, 4, 5/6,
and 7/8 cuts bass frequencies below 100 Hz at a slope of 18dB per octave. On the
stereo channels (9/10 and 11/12), the range of gain control is -20dB to +20dB,
with no Level Set LEDs or Low-Cut Switch.
3-Band Equalization: Each of the inputs has 3-band
equalization, with "low shelving" at 80Hz, peaking mids at 2.5kHz, and "high
shelving" at 12kHz. Shelving means the circuitry boosts or cuts all frequencies
past the specified frequency. EQ knobs are provided for Channels 1, 2, 3, 4,
5/6, 7/8, 9/10, and 11/12, and provide 15dB of boost or cut at 80Hz, 2.5kHz, and
12kHz. The "U" symbol indicates the center position (Unity Gain) where there is
no change in the signal level.
USB Input/Output: On the mixer's rear panel, the Type B USB
2x2 interface allows you to record two streams from the mixer, or input stereo
playback from a computer. A USB input level control (0dB-20dB) and a USB Thru
switch are provided.
Tape In/Out: The ProFX12v2 offers both Tape Inputs and
Outputs. The stereo unbalanced RCA inputs allows you to connect a CD or MP3
player or other line-level source. The level of the input signal can be
controlled with a separate Tape Level knob. The stereo unbalanced RCA outputs
let you record the main stereo mix onto a hard disk recorder or automatic CD
Main Meters: The mixer's main peak meters include two
columns of 12 LEDs, with three colors to indicate signal level ranges: green
(-30dB to +3dB), yellow (+6 to +15), and red (+20 OL).
Main & Headphone Outputs: The ProFX12v2 analog mixer is fitted with
XLR and 1/4" main outputs, as well as a 1/4" headphone output:
- Main XLR Outputs: Two male XLR connectors on the
mixer's real panel provide a balanced line-level signal at the end of the
mixer chain. This fully mixed stereo signal can be sent to your main power
amplifiers, powered speakers, or a serial effects processor.
- Main 1/4"Outputs: Two 1/4" connectors provide
balanced or unbalanced stereo line-level
signals from the main mix for connecting to inputs of
your powered speakers, main power amplifier, or to the next device in the signal
chain, such as an external processor.
This is the same signal that appears at the XLR Main outputs, but are 6dB
- Headphone Output: A single 1/4" TRS jack supplies the
output to a pair of stereo headphones. It is the same signal that is sent to
the main and tape outputs. A separate volume control knob is provided.
Pan/Balance: The ProFX12v2 allows you to adjust how much of
the channel signal is sent to the left vs. the right outputs. When the knob is
rotated fully left, the signal feeds the main left output. With the knob panned
hard right, the signal feeds the main right output. The pan control has a
Constant Loudness design which increases or decreases the signal when panning to
maintain the same apparent loudness. Channels 9/10 and 11/12 have a Balance
Control, similar to the Pan control of the other channels.
Stereo Returns: Two 1/4" jacks are provided as stereo (aux)
returns for balanced or unbalanced signals. They allow the stereo processed
output from an external effects processors or other devices to be added to the
main mix. The level of the incoming signal can be adjusted with the Stereo
Return (ST RTN) fader. These inputs can also be used to add any stereo
line-level source to the main mix.
Internal Effects: The powerful new ReadyFX effects engine
uses a floating-point DSP to deliver 16 effects that can be used to enhance any
performance. A rotary dial and 2-digit numeric display let you choose between
the following effects:
|1. Bright Room ||5. Warm Hall ||9. Chorus ||13. Delay 1 (Fast) |
|2. Warm Lounge ||6. Concert Hall ||10. Chorus + Reverb ||14. Delay 2 (Medium) |
|3. Small Stage ||7. Plate Reverb ||11. Doubler ||15. Delay 3 (Slow) |
|4. Warm Theater ||8. Cathedral ||12. Echo ||16. Pan Delay |
Aux Monitor/FX Sends: The ProFX12v2 features Aux Monitor and
Aux FX Sends:
- Aux Monitor Send: Stage monitors allow the musician to hear themselves
clearly on stage. The monitor mix may be carefully adjusted in level using the
Aux Mon controls on Channels 1, 2, 3, 4, 5/6, 7/8, 9/10, and 11/12. These tap a portion of each channel's signal to provide a 1/4"
TRS output to feed external stage monitors. The controls are off when fully
turned down, deliver unity gain (no change in level) at the center detent,
and provides up to 15dB of gain when fully turned up.
- FX Send: The Aux FX knobs tap a portion of each
channel's signal to provide a FX mix feeding the internal FX processor, and
to feed an external FX processor via the FX Send 1/4" connector. The
controls are off when fully turned down, deliver unity gain (no change in
level) at the center detent, and provides up to 15dB of gain when fully
turned up. Effects are added to the main mix by increasing the level of the
"FX to Main" knob. You can also add FX to the monitor mix by adjusting the
"FX to Mon" knob.
- FX Footswitch: A 1/4" TRS connector is provided for
connecting a one-button, on/off footswitch to mute or un-mute the internal
Graphic Equalizer: The ProFX12v2 offers a 7-Band Graphic EQ
for the left/right main mix or for the monitors. The EQ affects the line-level
outputs, but not the headphone or tape outputs. It can be bypassed at the press
of a button, if needed. Each slider lets you adjust the level of its frequency
band with up to 15dB of boost or cut. The center detent indicates no change in
level (0 dB). The frequency bands are: 125Hz, 250Hz, 500Hz, 1kHz, 2kHz, 4kHz,
Applications: The Mackie ProFX12v2 is great for Live sound mixing, houses
of worship, clubs, gyms, banquet halls, conference and board rooms, studio and
field recording, video post-production, multimedia applications, broadcast, and