3122V - Audio Equipment API Audio - Free user manual and instructions
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| Product Type | Audio Processor / Preamplifier |
| Brand | API Audio |
| Model | 3122V |
| Form Factor | 1U Rackmount |
| Dimensions (W x D x H) | 19 x 8 x 1.75 inches (483 x 203 x 44 mm) |
| Weight | 2.5 kg (5.5 lbs) |
| Power Supply | External AC adapter, 100-240V, 50/60 Hz |
| Input Connections | Balanced XLR, 1/4" TRS (Line) |
| Output Connections | Balanced XLR, 1/4" TRS |
| Frequency Response | 20 Hz - 20 kHz (±0.5 dB) |
| Maximum Gain | 60 dB |
| Signal-to-Noise Ratio | > 100 dB |
| THD+N | < 0.005% |
| Phantom Power | +48V (switchable per channel) |
| Controls | Gain, Pad, Phase, High-Pass Filter, Phantom Power |
| Indicators | Signal presence, Clip LEDs |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Safety Precautions | Do not expose to moisture; use only supplied power adapter. |
| Maintenance | Clean with a soft dry cloth; avoid solvents. |
| Spare Parts / Reparability | Contact authorized API service center for repairs. |
Frequently Asked Questions - 3122V API Audio
How do I connect a microphone to the 3122V?
Connect your microphone to the XLR input. Ensure phantom power (+48V) is switched on if using a condenser microphone. Set the gain to an appropriate level.
What is the maximum input level?
The maximum input level before clipping is typically +24 dBu with the pad engaged. Without pad, it's lower.
How do I engage the high-pass filter?
Press the HPF button on the front panel. It activates a -12 dB per octave filter at 75 Hz.
Can I use the 3122V with line level sources?
Yes, use the 1/4" TRS input for line level sources. Adjust gain accordingly.
What does the 'Pad' switch do?
The pad attenuates the input signal by 20 dB to prevent overload when using high-level sources.
How do I know if clipping occurs?
Observe the Clip LED. If it illuminates, reduce gain or engage the pad to avoid distortion.
Is the 3122V compatible with 48V phantom power?
Yes, it provides +48V phantom power, switchable per channel via the front panel button.
What is the recommended operating temperature?
Operate in temperatures between 0°C and 40°C (32°F to 104°F). Avoid extreme conditions.
How do I clean the device?
Unplug the unit and wipe with a soft, dry cloth. Do not use liquids or abrasive cleaners.
What should I do if the device stops working?
Check power connections and cables. If issue persists, contact API Audio support for service.
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