Shure RPM181/PRE: The Ultimate XLR Preamplifier for Beta 181 Condenser Microphone
Unleash the full potential of your Shure Beta 181 Condenser Microphone with the RPM181/PRE Replacement XLR Preamplifier! This remarkable preamplifier is designed to work seamlessly with one of four interchangeable capsules, each offering a unique polar pattern for maximum versatility.
• Versatile Polar Patterns: Choose from cardioid, supercardioid, omnidirectional, or bidirectional capsules to suit any recording situation. Whether you're capturing vocals, instruments, or ambient sounds, the RPM181/PRE has you covered.
• Lightweight and Compact: Weighing only 5.1 oz with an attached capsule, this preamplifier is incredibly portable and can get up close to any sound source, even in the tightest spaces.
• Exceptional Sound Quality: The RPM181/PRE delivers exceptional low-frequency reproduction and minimal crossover distortion, ensuring crystal-clear audio with consistent polar responses. It's the perfect choice for professional recording engineers and musicians alike.
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 5.1 oz 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 (2.4 mV)
- Supercardioid: -49.5 dBV/Pa (2.5 mV)
- Omnidirectional: -52.0 dBV/Pa (2.6 mV)
- Bidirectional: -51.0 dBV/Pa (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 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: 5.1 oz (145 grams)
The Shure RPM181/PRE is a replacement XLR preamplifier designed for the Shure Beta 181 Condenser Microphone. It's perfect for musicians, audio engineers, and anyone looking to enhance their recording setup. With four interchangeable capsules offering different polar patterns, it can adapt to various recording scenarios. Weighing just 5.1 oz, it's lightweight and easy to use, allowing you to get close to your sound source. Whether you're recording vocals, instruments, or ambient sounds, the RPM181/PRE delivers exceptional sound quality with minimal crossover distortion and consistent polar responses.
