Trykksonemikrofon for basstromme og andre lavfrekvente instrumenter, inkludert piano. En klassiker i livesammenheng samtidig som den er god venn i studio. Liggende på en dunpute inne i basstrommen får du den samme punchen hver kveld!

 

Shure Beta 91A er beregnet for bruk med basstrommer, samt andre tradisjonelle lavfrekvente bruksområder, inkludert piano. Med en oppdatert mikrofonkapsel, integrert forforsterker, og XLR-tilkobling har Beta 91A sterk lavfrekvensrespons og er skreddersydd for bassfrekvensapplikasjoner. The Beta 91A kombinerer overlegent attack og punch for studiokvalitetslyd, selv ved svært høye lydtrykk (SPL).

 

Features

 

Uniform half-cardioid polar pattern for maximum gain-before-feedback and rejection of off-axis sound
Precision-engineered low-profile design features integrated preamplifier and XLR connector to maximize setup efficiency while minimizing stage clutter
Frequency response tailored for kick drum/low frequency applications with a wide dynamic range for use in high SPL environments
Two-position contour switch to maximize attack and clarity depending on application: select the flat response setting for natural sound in most applications or the “low-mid scoop” setting for a strong low frequency “punch” with plenty of higher frequency attack
Requires no external mounting or accessories for ease of use and storage
Furnished with zipper pouch
Spesifikasjoner

 

Type
Electret Condenser

 

Frequency Response
20 to 20,000 Hz

 

Polar Pattern
Half-cardioid (cardioid in hemisphere above mounting surface) 

 

Impedance
146 Ohms

 

Sensitivity (at 1 kHz, open circuit voltage)
-48.5 dBV/Pa (3.8mV)
1 Pascal=94 dB SPL

 

Maximum SPL (1 kHz at 1% THD)
1000 Ohm load: 151 dB, 2500 Ohm load: 155 dB

 

Signal-to-Noise Ratio (referenced at 94 dB SPL at 1 kHz)
64 dB

 

S/N ratio is difference between 94 dB SPL and equivalent SPL of self noise, A-weighted

 

Dynamic Range (at 1 kHz)
1000 Ohm load: 121.5 dB
2500 Ohm load: 125.5 dB

 

Common Mode Rejection (20 Hz to 20 kHz)
> 55 dB

 

Clipping Level (20Hz-20 kHz at 1% THD)
1000 Ohm load: 7.50 dBV, 2500 Ohm load: 12.5 dBV

 

THD of microphone preamplifier when applied input signal is equivalent to cartridge output at specified SPL

 

Self Noise (typical, equivalent SPL, A-weighted)
29.5 dB SPL-A 

 

Polarity
Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3

 

Weight
Net: 470 g (16.6 oz.)

 

Frequency Contour Switch
7 dB of attenuation centered at 400 kHz  

 

Connector
Three-pin professional audio (XLR), male, balanced

 

Power Requirements
11-52 Vdc phantom power, 5.6 mA