M1224FX - Audio Mixer American Audio - Free user manual and instructions
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| Product Type | 12-Channel Analog Mixer with Digital Effects |
| Channels | 12 mono input channels (XLR/TRS combo jacks) + 2 stereo returns |
| Equalization | 3-band EQ on each mono channel (High, Mid, Low) |
| Built-in Effects | 24-bit digital effects processor with 16 presets (reverb, delay, chorus, flanger) |
| Phantom Power | +48V phantom power switch for condenser microphones |
| Power Supply | External AC adapter (100-240V, 50/60Hz) |
| Power Consumption | 30W maximum |
| Dimensions (W x D x H) | 19.0 x 13.5 x 3.5 inches (48.3 x 34.3 x 8.9 cm) |
| Weight | 12.5 lbs (5.7 kg) |
| Frequency Response | 20 Hz – 20 kHz (+0.5 dB) |
| Total Harmonic Distortion | < 0.01% @ 1 kHz, nominal level |
| Signal-to-Noise Ratio | > 100 dB, A-weighted |
| Input Impedance | Mic: 2.4 kΩ; Line: 10 kΩ |
| Output Impedance | Main outputs: 120 Ω; Control room: 150 Ω |
| Maximum Input Level | +20 dBu (line input) |
| Headphone Output | 1/4" stereo TRS, adjustable level |
| AUX Sends | 2 AUX sends (pre/post switchable) |
| Subgroups | 2 subgroups with dedicated outputs |
| Mounting | 19" rack mountable (rack ears included) |
| Cleaning | Use a dry, lint-free cloth; do not use liquids or sprays |
| Safety | Indoor use only; avoid exposure to moisture, heat, or direct sunlight |
| Repairability | No user-serviceable parts; contact authorized service center |
Frequently Asked Questions - M1224FX American Audio
How do I connect the mixer to a computer for recording?
The M1224FX does not have a built-in USB interface. Use the main outputs (XLR or 1/4" TRS) connected to an external audio interface or mixer with USB connectivity.
Can I use the mixer with a condenser microphone?
Yes. Press the +48V Phantom Power button on the rear panel to power condenser microphones. Do not turn phantom power on when using ribbon mics or when plugging in unbalanced devices.
How do I apply effects to a specific channel?
Use the AUX 1 or AUX 2 send knobs on the channel to route signal to the internal effects. Then adjust the effect return level via the FX Return knob or the dedicated stereo return channels.
What type of power supply does the mixer use?
It uses an external AC adapter (100-240V, 50/60Hz). Ensure the adapter is connected to a grounded outlet and replace only with an identical adapter from American Audio.
How many input channels can I use simultaneously?
You can use up to 12 mono channels (via XLR/TRS combo jacks) plus 2 stereo return channels, giving a total of 14 inputs. Each channel can accept microphone or line level signals.
The mixer makes a humming noise. What should I check?
First, ensure all cables are balanced and properly shielded. Check that the power supply is not near audio cables. Try disconnecting all inputs and re-connecting one at a time to isolate the source. Ground loop hum may require a ground lift adapter.
Can I use the mixer as a monitor desk for live sound?
Yes. Use the AUX sends to feed monitor speakers or in-ear monitors. The AUX 1 and AUX 2 outputs can be configured pre or post fader using the internal jumpers (see manual for details).
What are the default effect presets?
The 16 presets include: 1) Small Hall, 2) Large Hall, 3) Plate, 4) Room, 5) Vocal Reverb, 6) Spring, 7) Delay 1, 8) Delay 2, 9) Chorus, 10) Flanger, 11) Phaser, 12) Rotary, 13) Tremolo, 14) Auto Pan, 15) Multi-FX, 16) Bypass. Refer to manual for detailed descriptions.
How do I connect a subwoofer to this mixer?
Use one of the Subgroup outputs or the Main outputs to feed the subwoofer. If using a mono sub, combine left and right with a Y-cable or use a subwoofer with built-in crossover.
Is the mixer rack-mountable?
Yes. The M1224FX includes rack ears and fits a standard 19-inch rack. Allow at least 1U of space above and below for ventilation.
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USER MANUAL M1224FX American Audio
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Product information
Brand : American Audio
Model : M1224FX
Category : Audio Mixer