User Manual

3124+ and the 3124mb+ Features
Represented by:
Other High Quality Products from API
500H
2 Slot
frame with
internal power supply
500-6B
6 slot
“Lunchbox”
Frame with internal
Power Supply
500V
10 Slot
Frame
L200
Rack
System
3124+/3124mb+ Specifications
Input Impedance: 1500 Ohms Mic, 470K Ohms
Un-Balanced, HI-Z in
Output Impedance: Less than 75 Ohms
Channel Outputs
Nominal Levels: XLR Channel Output +4dBu
Stereo Output Level: Unbalanced: nominal -2,
Balanced: +4
Clipping Level: XLR Channel Output better than
+28dBm
Frequency Response: +0, -5, 10Hz to 20kHz
(-.5 at 10Hz)
Noise EIN: -129 Mic, -125 Un-Bal. Actual
Measured Noise: Better than -91dBm / below
Nominal +4.
Distortion: All Outputs at +4 out, .03%, at +22,
.09% Max,
Gain Range: 150 Ohms Input 10dB Min., 65 dB
Max (inc. PAD). Un-Bal. Input
14dB Min., 50 dB Max
VU Meter: Calibrated for XLR Outputs,
OVU=+4dBu,
(-12, -6, -3, 0, +3, +6, +18)
Controls: GAIN, PAD (20dB), 48Volts, POL
(polarity), MIC (mic/un-ba;), VU, AC
Size: 19” X 1U X 8”
Shipping/Actual Weight:
3124+: 13lbs./11lbs.
3124mb+: 11lbs./9lbs.
Stereo Outputs
Aux Send Output
Aux Return
MIC Input Output Insert
3124+
3124mb+
8301 Patuxent Range Rd.
Jessup, MD 20794
Phone: [phone]
Fax: [phone]
Website: www.apiaudio.com