Mackie CFX12
A compact live-sound mixer with a 32-bit effects engine, a 9-band graphic EQ, and a solo light that will not be ignored.
Overview
The CFX12 is one of the mid-sized members of Mackie's CFX Series of compact live-sound consoles. The line came in 8, 12, and 16 mono-channel versions. Mackie's own introduction states the target plainly: the sound reinforcement needs of small-to-medium clubs, meeting rooms, sanctuaries, and outdoor gatherings. That's a modest brief, and the CFX12's features read like a direct answer to it. It has enough channels to cover a working band, an onboard graphic EQ to fight room acoustics without a rack of outboard gear, and a digital effects processor so a reverb unit isn't a separate purchase.
The channel strip is where the CFX12 earns its keep. Each of the twelve mono channels has a variable input trim that swings from +6 to +50 dB for microphones and -15 to +30 dB for line sources. That's wide enough that a whisper-quiet dynamic mic and a hot keyboard output can both be brought to a usable level. Phantom power is globally switched, so condenser mics are covered across the board. A Zero Level gain-setting indicator LED takes the guesswork out of setting trim by eye. Every mono channel has a switchable 100Hz low-cut filter for shaving off stage rumble and handling noise, a TRS insert jack for patching a compressor or gate, and a 3-band mid-sweep EQ. Two pre/post-fader aux sends and two post-fader effects sends give you monitor mixes and effect feeds without repatching. Each channel also has pan, mute, 1-2/3-4 busing, PFL solo, and a 60mm fader.
The two stereo line channels are trimmed differently, with a narrower -20 to +20 dB range, and they get a 4-band EQ rather than the mono channels' 3-band mid-sweep. Otherwise they mirror the mono strips: two pre/post aux sends, two post-fader effects sends, pan, mute, busing, PFL solo, and a 60mm stereo fader. For a keyboard rig, a stereo drum machine, or a pair of playback sources, that's the layout you'd want.
The master section is ambitious for the size of the box. Four 60mm submix mono faders each have separate Left and Right assign, feeding a 60mm main mix stereo fader. There are TRS insert jacks on the main mix, balanced XLR stereo main outputs, and a balanced XLR mono subwoofer output for anyone running a sub. Metering is a 12-segment stereo LED array, and the thresholds run from -30 dB up to CLIP, which the manual pegs at +22 dBu at the TRS main outs and +28 dBu at the XLR main outs. Mackie's advice in the manual is to keep peaks between 0 and +7 for real-world results, noting that most amplifiers clip around +10 dB and some recorders are less forgiving still. The meters show the main mix post-fader unless a solo PFL switch is engaged. Then they display the soloed channel at unity gain, pre-fader, so what you see matches what you hear in the headphones.
Then there's the 9-band stereo graphic EQ on the main mix, the two aux sends and two effects sends with master level controls, level controls for the stereo effect returns, and the EMAC 32-bit digital stereo effects processor with its own footswitch jack. EMAC's controls are preset select, time/rate, damping/depth, wide, and bypass, with a clip indicator. The effects section also gets a "to main mix" and "effects to monitor" routing option. A Break switch handles intermissions without feedback drama. RCA tape out and tape in (the input with its own stereo level control) cover recording and playback. There's also a headphone output with level control, a utility out with level control, and a 12V BNC lamp socket for dark stages.
Two small things show up in daily use. The first is the Rude Solo Light, which Mackie's own manual calls "(in)famous". It's a solo indicator bright enough that you will not leave a channel soloed by accident. The second is crosstalk performance: adjacent inputs, or input to output, measure -90 dB at 1kHz with the fader off, -90 dB at 1kHz with the mute and break switches engaged, and -80 dB at 1kHz. Maximum input levels are generous. The effects return takes +20 dBu, the mic input handles -28 dBu at +50 dB trim and +18 dBu at +6 dB trim, and the line input takes -8 dBu at +30 dB trim and +38 dBu at -15 dB trim.
The CFX12 is not a featherweight. It's a working console with a full complement of faders, a graphic EQ, and a digital effects section. Mackie's service documentation is candid about one thing: service is available only at the factory in Woodinville, Washington, and of all Mackie products returned for service, roughly half come back coded "CND" - Could Not Duplicate - meaning the problem usually lay somewhere other than the mixer. The manual's troubleshooting checklist is worth working through before boxing anything up. Warranty terms are one year from original purchase, extendable by an additional two years if the optional registration card questionnaire is completed. During those extra two years, labor for replacing slide potentiometers is excluded and may be billed. Unauthorized service, repair, or modification voids the warranty, and products returned without an RA number are refused.
If you're tracking down a used CFX12, confirm every fader and pot moves cleanly, exercise the graphic EQ sliders and the EMAC preset controls, and check that the XLR main outs and the subwoofer output both pass signal. The 60mm faders and the slide potentiometers are the wear items on any mixer of this vintage. The owner's manual is thorough and worth keeping with the unit. Mackie's own service instructions tell you to keep it, because they don't need it to repair the mixer.
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