Shure RPM181-PRE Preamplifier for BETA181
Features
- Replacement Preamp for Shure's Beta 181
- Works with Four Interchangeable Capsules
- Lightweight (145 g)
- Highly Versatile
Description
The RPM181/PRE Replacement XLR Preamplifier by Shure is designed to work in combination with one of four interchangeable capsules for the Shure Beta 181 side-address instrument microphone. The capsules come in cardioid, supercardioid, omnidirectional and bidirectional polar patterns making a highly versatile pair.
With a capsule attached, it weighs only 145 g and gets close to any source even in the tightest conditions. Its wide frequency response and high SPL handling is great for miking dual sound sources such as between toms or acoustic instruments. It is also very useful as a mono drum overhead or pair two to create the Blumlein stereo effect.
The RPM181/PRE matched with any of the available capsules performs with little to no crossover distortion and provides exceptional low-frequency reproduction. The pair provides exceptional audio with consistent, textbook-like polar responses resulting in a mic with noteworthy sound and versatility.
Features
- Works with one of four interchangeable capsules for the Shure Beta 181 instrument microphone
- The cardioid, supercardioid, omnidirectional and bidirectional capsules make this mic highly versatile
- Weighs only 145 g with attached capsule and captures any source even in the tightest conditions
- Matched with any available capsule it performs with little to no crossover distortion and provides exceptional low-frequency reproduction
Specifications
| Type | Condenser |
| Frequency Response | 20 to 20,000 Hz |
| Polar Pattern | 181/C: Cardioid 181/S: Supercardioid 181/O: Omnidirectional 181/BI: Bidirectional |
| Sensitivity | Cardioid: -46.5 dBV/Pa[1] (2.4 mV) Supercardioid: -49.5 dBV/Pa[1] (2.5 mV) Omnidirectional: -52.0 dBV/Pa[1] (2.6 mV) Bidirectional: -51.0 dBV/Pa[1] (2.6 mV) |
| Output Impedance | 110 ohms (at 1 kHz) |
| Signal to Noise Ratio | Cardioid: 73.5 dB Supercardioid: 71.5 dB Omnidirectional: 70.5 dB Bidirectional: 71.0 dB |
| Self Noise | Cardioid: 20.5 dB SPL-A Supercardioid: 22.5 dB SPL-A Omnidirectional: 23.5 dB SPL-A Bidirectional: 23.0 dB SPL-A |
| Common Mode Rejection | ≥55 dB |
| Polarity | Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3 |
| Power Requirements | 11-52 V DC[4] phantom power (IEC-61938) 2.4 mA, maximum |
| Maximum SPL | 1000 Ohm Load Cardioid: 149.0 dB SPL Supercardioid: 152.0 dB SPL Omnidirectional: 154.0 dB SPL Bidirectional: 153.5 dB SPL 2500 Ohm Load Cardioid: 151.5 dB SPL Supercardioid: 154.5 dB SPL Omnidirectional: 157.0 dB SPL Bidirectional: 156.0 dB SPL |
| Dynamic Range | 1000 Ohm Load Cardioid: 128.5 dB Supercardioid: 129.5 dB Omnidirectional: 130.5 dB Bidirectional: 130.5 dB 2500 Ohm Load Cardioid: 131.0 dB Supercardioid: 132.0 dB Omnidirectional: 133.5 dB Bidirectional: 133.0 dB |
| Clipping Level | 1000 Ohm Load 7.5 dBV 2500 Ohm Load 10.5 dBV |
| Weight | 145 g |
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Details
- Product: Shure RPM181-PRE Preamplifier for BETA181
- Manufacturer: Shure
- Model: RPM181-PRE
- SKU: RPM181-PRE
- RM Product #: 5392
- Element Type: Condenser
- Warranty: 2 year manufacturer warranty (excluding consumable e.g. lithium-ion batteries).
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