Shure RPM181-PRE Preamplifier for BETA181
- Replacement Preamp for Shure's Beta 181
- Works with Four Interchangeable Capsules
- Lightweight (145 g)
- Highly Versatile
- Product: #5392
- SKU: RPM181-PRE
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.
- 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
|Frequency Response||20 to 20,000 Hz|
|Polar Pattern||181/C: Cardioid
|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
2500 Ohm Load
Australian Shipping Via DHL
DHL offers a great express shipping service to Australia from New Zealand. We are proud to be able to offer express shipping to main cities on the east coast of Australia, within the same timeframe ( If not quicker ) than local Australian courier companies. Prior to the Covid-19 outbreak, service standards for these main centers was overnight. However these services have been impacted greatly, and as such the overnight service has been suspended. Overnight shipping will likely resume once things have returned to normal.
Qualifying main centers include:
Whilst this service is extremely efficient and will likely be delivered within 1-2 days 99.9% of the time, it cannot be guaranteed. In the case where something were to go wrong with your delivery and it doesn’t arrive within the specified time frame, in most cases it will be delivered by the next day.
While not all major cities are eligible for overnight delivery, they still benefit from this great service. Other centers throughout Australia will have a typical delivery ETA of 2-4 days. (Excluding rural delivery address where this ETA can be extended to an additional three or more days).
If you require urgent shipping and you don’t reside in one of the cities stated above, please contact us and we can find a solution that works best for you.
Please Note: Shipping via DHL is not available to PO boxes and/ or parcel boxes etc.