Radio Design Labs FP-MX4

The FP-MX4 is a single channel audio mixing module featuring four identical inputs. Each input accepts either a mic or line level source. The output section provides four mixing potentiometers corresponding to the four inputs, and a level indicator. The output section provides both a balanced line (+4 dBu) and balanced microphone level (-45 dBu) output. Both outputs may be used at the same time. The four mixing potentiometers are intended to be set at installation or to be adjusted occasionally.

Specifications:

• Microphone Inputs(4): 2 kW balanced, switchable 24 V phantom (IEC 1938: 1996-12)
• Microphone Input Level:
      * Switch selectable ranges: -30 to –40 dBu, -40 to –50 dBu,< -50 dBu
• Line Inputs (4): 10 kW balanced (may be wired unbalanced)
• Line Input Level: +4 dBu
• Gain Adjustments (4):
      * Mic: Off to 65 dB gain (max. gain range)
      * Line: Off to 6 dB gain
• Frequency Response:
      * Mic: 10 Hz to 30 kHz (± 0.25 dB)
      * Line: 10 Hz to 45 kHz (± 0.25 dB)
• THD+N:
      * Mic:< 0.012%
      * Line:< 0.004%
• Residual Noise (below +4dBu output): 4 line level sources (unity gain):< -84 dB (wideband)
      * 40dB Gain Mic: -90 dB; All 4 mic level sources:< -82 dB (wideband);< -84 dB (A)
      * 50dB Gain Mic: -86 dB; All 4 mic level sources:< -72 dB (wideband);< -76 dB (A)
      * 60dB Gain Mic: -80 dB; All 4 mic level sources:< -65 dB (wideband);< -67 dB (A)
• Outputs (2):
      * Line: +4 dBu 150 W balanced
      * Mic: –45 dBu 150 W balanced
• Indicators (2): Audio level meter
• Power Requirement: Ground-Referenced 24 Vdc @ 160 mA
• Dimensions (H x W x L): 1.42" x 3.25" x 8.14" (3.61 x 8.26 x 20.68 cm)