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User Manual for Whirlwind LMPRE Microphone Preamplifier Click to enlarge the picture
Contents of the user manual for the Whirlwind LMPRE Microphone Preamplifier
- Product category: Microphone Preamps Whirlwind
- Brand: Whirlwind
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Whirlwind Microphone Preamps
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User manual for the Whirlwind LMPRE Microphone Preamplifier contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Whirlwind product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Whirlwind user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Whirlwind product will considerably shorten its lifespan!
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Product description 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
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- +24V Phantom Power
- 2-Band EQ
- Balanced XLR input/output
- Additional mono-summed RCA output
UPC: 692465021906 In the Box Whirlwind LMPRE Microphone Preamplifier Power Supply 2-Year Limited Warranty Table of Contents
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Technical parametersWhirlwind LMPRE Specs | | | 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 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 | | | | 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 | | | | 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 | | | | Package Weight | 1.3 lb | | Box Dimensions (LxWxH) | 8.7 x 3.7 x 2.7" |
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