API 3124V
MPN #3124V
The 3124V is a high quality, compact, 4-channel mic preamp. It is equipped with the RE-115 K mic input transformer and the proprietary output transformer found in all API mic pres
Additionally, the 3124V offers Variable Output Level Control and switchable 3:1 output transformer selection. The unit has an internal 48-volt phantom power supply, which is switchable for each channel, as well as -20dB pad switches that affect both the mic and Hi-Z instrument inputs, both located on the front panel.
The 3124V also features up to 65dB of gain. Additionally, the Hi-Z front panel inputs feed directly to the op amps, which allow a low level input such as a guitar or bass to be amplified without a matching transformer or direct box. These Hi-Z inputs can take levels as high as +20dBu, making them perfect for keyboards and other high level devices. The mic preamp outputs are on rear panel male XLR connectors.
Features
Classic API Circuit DesignUses API 2520 Op AmpsVariable Output Level Control3:1 Output Transformer Tap SelectionFour female XLR mic inputsFour front panel 1/4" Hi Z instrument inputsFront panel polarity switchesFront panel -20dB pad switchesFront panel mic/instrument switchesFront panel 48V power switches
Specifications
Input Impedance: 1500 Ohms Mic, 470 K Ohms Un-Balanced, HI-Z in
Output Impedance: Less than 75 Ohms Channel Outputs
Nominal Levels: XLR Channel Output +4 dBu
Stereo Output Level: Unbalanced: nominal -2, Balanced: +4
Frequency Response: +0, -5, 10 Hz to 20 kHz (-.5 at 10 Hz)
Noise EIN: -129 Mic, -125 Un-Bal. Actual
Measured Noise: Better than -91 dBm / below Nominal +4.
Distortion: All Outputs at +4 out, .03%, at +22, .09% Max
Gain Range: 150 Ohms Input 10 dB Min., 65 dB Max (inc. PAD), Un-Bal. Input 14 dB Min., 50 dB Max
VU Meter: Calibrated for XLR Outputs, OVU=+4 dBu, (-12, -6, -3, 0, +3, +6, +18)
Controls
GAINPAD (20 dB)48 VoltsPOL (polarity)MIC (mic/un-bal)VUAC
Power Consumption, Quiescent: 19.2 Watts
Size: 19" X 1.75" (1U) X 11" Deep
Size (Boxed for Shipping): 23.25" X 6.5" X 16.5"
Actual Weight: 10.38 lbs.
Shipping Weight: 14.06 lbs
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