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Whirlwind LMPRE Microphone Preamplifier

B&H # WHLMPRE MFR # LMPRE
Whirlwind LMPRE Microphone Preamplifier

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Product Highlights

  • Compact Single Channel Preamp
  • Adds up to 70dB of Gain
  • +24V Phantom Power
  • 2-Band EQ
  • Onboard Peak Limiter
  • LED Output Metering
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You Pay: $121.95

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The Whirlwind LMPRE Microphone Preamplifier adds up to 70dB of gain to one microphone channel. Its compact design makes it an extremely portable and efficient choice to keep in your audio toolbox.

The LMPRE has a balanced XLR input with switchable phantom power. Its initial gain stage is followed by a built-in equalizer, with a low band at 250Hz and high band at 4kHz. These fixed bands are mainly intended to maximize intelligibility; they can be cut or boosted by approximately 6dB.

A rare feature in an affordable preamp, the LMPRE includes an onboard peak limiter with LED metering. The activity of the limiter is governed entirely by the input level, which makes it free to function like an effect rather than simply an output protector.

The LMPRE has balanced XLR and mono-summed RCA outputs for connection to just about any audio amplification system. The 3-level LED output metering allows you to carefully monitor signal strength.

The Whirlwind LMPRE is an excellent choice for adding a high-quality mic input to any audio system.

Whirlwind LMPRE Microphone Preamplifier
  • +24V Phantom Power
  • 2-Band EQ
  • Balanced XLR input/output
  • Additional mono-summed RCA output
Input
Input Connectors Balanced XLR x1
Input Gain 10 - 49 dB
Input Impedance 20,000 Ohm differential
Maximum Input Level +4 dBV
Phantom Power +23.7 VDC
Output
Output Connectors Balanced XLR x1
Mono-summed RCA pair x1
Output Impedance XLR: 95 Ohms
RCA pair: 1,600 Ohms
Output Gain +/-15 dB
Maximum Output Level +23 dBV
Performance
Frequency Response @50 dB gain (not limiting): 20 - 10,000 Hz +/-1 dBV;
-2.5 dB @ 20,000 Hz

@40 dB gain (limiting): 20 - 20,000 Hz
Total Gain 70 dB; 83 dB with bass and treble controls at max
Equivalent Input Noise -115 dBV
Noise At unity gain: -104 dBV
THD + N @50 dB gain (not limiting): +/-0.1%, 20 - 20,000 Hz
@40 dB gain (limiting): +/-0.1%, 100 - 20,000 Hz; +/-1.5% 20 - 50 Hz
Limiting: @ threshold < 0.05%; limiting < 0.11%
CMR 80 dB @ 60 Hz
General
Power Consumption Typically 62mA @ 24 VDC
Power Requirements 24 V, 200 mA, unregulated; 2.1mm-center positive
Fuse Automatic reset internal fuse; 100 mA
Dimensions (H x W x D) 1.6 x 5.7 x 2.8" (4.06 x 14.48 x 7.11 cm)
Weight 0.7 lbs (0.32 kg)
1.1 lbs (0.5 kg) with power supply
Whirlwind LMPRE Microphone Preamplifier
  • Power Supply
  • 2-Year Limited Warranty
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