{"id":4652643778641,"title":"SM81 Instrument Microphone","handle":"sm81-instrument-microphone","description":"\u003cp\u003eThe Shure SM81 is a high-quality, unidirectional condenser microphone designed for studio recording, broadcasting, and sound reinforcement. Its wide frequency response, low noise characteristics, and low RF susceptibility have made it a standard for applications involving acoustic instruments, especially guitar, piano, and cymbals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSM81-LC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- With windscreen, no cable. Phantom power required.\u003c\/p\u003e\n\u003cp\u003eThe SM81 is ruggedly constructed. It operates on phantom power and performs over a wide range of temperatures and humidity conditions. It is furnished with a swivel adapter, attenuator-switch lock, foam windscreen, and case for carrying and storage. Other accessories are available.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"innoindentin\"\u003e\n\u003cli\u003e0 Hz to 20 kHz frequency response\u003c\/li\u003e\n\u003cli\u003eFlat response curve for accurate reproduction of sound sources\u003c\/li\u003e\n\u003cli\u003eLow noise and high output clipping level\u003c\/li\u003e\n\u003cli\u003eLow distortion over a wide range of load impedances\u003c\/li\u003e\n\u003cli\u003eCardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection and minimum coloration of off-axis sounds\u003c\/li\u003e\n\u003cli\u003eLow RF susceptibility\u003c\/li\u003e\n\u003cli\u003eSelectable low-frequency response: flat, 6 or 18 dB\/octave rolloff\u003c\/li\u003e\n\u003cli\u003e0 dB\/10 dB lockable attenuator switch\u003c\/li\u003e\n\u003cli\u003ePhantom powering (DIN 45 596 voltages of 12 to 48 Vdc)\u003c\/li\u003e\n\u003cli\u003eRugged steel construction for durability\u003c\/li\u003e\n\u003cli\u003eField-usable over wide range of temperature and humidity conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCondenser (electret bias)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e20 to 20,000 Hz\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePolar Pattern\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCardioid (unidirectional) response-uniform with frequency, symmetrical about axis\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eRated at 150 ohms (85 ohms actual)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdd\u003eRecommended minimum load impedance: 800 ohms (May be used with loads as low as 150 ohms with reduced clipping level)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOutput Configuration and Connector\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eBalanced, transformer-coupled output; male XLR connector\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eSensitivity (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eOpen Circuit Voltage: -45 dBV\/Pascal (5.6 mV\u003cbr\u003e(1 Pascal = 94 dB SPL)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eClipping Level (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e800 ohm Load: -4 dBV (0.63 V)\u003c\/dd\u003e\n\u003cdd\u003e150 ohm Load: -15 dBV (0.18 V)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eTotal Harmonic Distortion\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eLess than 0.5% (131 dB SPL at 250 Hz into 800 ohm load)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eMaximum SPL (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e800 ohm load: 136 dB (attenuator at 0) 146 dB (attenuator at -10)\u003c\/dd\u003e\n\u003cdd\u003e150 ohm load: 128 dB (attenuator at 0) 138 dB (attenuator at -10)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHum Pickup\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e-3 dB equivalent SPL in a 1 mOe field (60 Hz)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\n\u003cstrong\u003eSelf-Noise\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(equivalent sound pressure levels; measured with true rms voltmeter)\u003c\/dt\u003e\n\u003cdd\u003e16 dB typical, A-weighted\u003c\/dd\u003e\n\u003cdd\u003e19 dB typical, weighted per DIN 45 405\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e78 dB (IEC 651)* at 94 dB SPL\u003c\/dd\u003e\n\u003cdd\u003e*S\/N ratio is difference between 94 dB SPL and product's equivalent self noise (SPL A-weighted).\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOvervoltage and Reverse Polarity Protection\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eMax. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc\u003c\/dd\u003e\n\u003cdd\u003eReverse polarity protection: 200 mA max. (diode-clamped)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePolarity\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003ePositive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCartridge Capacitance\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e54 pF\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eLow Frequency Response Switch Positions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFlat; -6 dB\/octave below 100 Hz; -18 dB\/octave below 80 Hz\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAttenuator Switch Positions (Lockable)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e0 or -10 dB\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSupply Voltage: 11 to 52 Vdc, positive, pins 2 and 3\u003c\/dd\u003e\n\u003cdd\u003eCurrent Drain: 1.2 mA max.\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e\n\u003cdl\u003e\n\u003cdt\u003eTemperature:\u003c\/dt\u003e\n\u003cdd\u003eStorage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)\u003c\/dd\u003e\n\u003cdd\u003eOperating: -6.7 degrees to 49 degrees C (20 degrees to 120 degrees F)\u003c\/dd\u003e\n\u003cdt\u003eHumidity:\u003c\/dt\u003e\n\u003cdd\u003eStorage 0 to 95% relative humidity at room temperature (72 degrees to 80 degrees F, 22 degrees to 27 degrees C)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSteel construction with vinyl metallic paint finish and stainless steel screens\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSee User Guide\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNet: 230 grams (8 oz)\u003c\/dd\u003e\n\u003cdd\u003ePackaged: 740 grams (1 lb 10 oz)\u003c\/dd\u003e\n\u003c\/dl\u003e","published_at":"2020-07-13T11:29:42-04:00","created_at":"2020-07-13T11:29:41-04:00","vendor":"Shure","type":"Microphone","tags":["Brand_Shure","Type_Microphone","Wired_Instrument"],"price":48900,"price_min":48900,"price_max":48900,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":32460552437841,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"SHURSM81LC","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"SM81 Instrument Microphone","public_title":null,"options":["Default Title"],"price":48900,"weight":771,"compare_at_price":null,"inventory_management":"shopify","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/productionsupplies.ca\/cdn\/shop\/products\/SM81.png?v=1594654182"],"featured_image":"\/\/productionsupplies.ca\/cdn\/shop\/products\/SM81.png?v=1594654182","options":["Title"],"media":[{"alt":null,"id":7542902915153,"position":1,"preview_image":{"aspect_ratio":1.1,"height":1180,"width":1298,"src":"\/\/productionsupplies.ca\/cdn\/shop\/products\/SM81.png?v=1594654182"},"aspect_ratio":1.1,"height":1180,"media_type":"image","src":"\/\/productionsupplies.ca\/cdn\/shop\/products\/SM81.png?v=1594654182","width":1298}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eThe Shure SM81 is a high-quality, unidirectional condenser microphone designed for studio recording, broadcasting, and sound reinforcement. Its wide frequency response, low noise characteristics, and low RF susceptibility have made it a standard for applications involving acoustic instruments, especially guitar, piano, and cymbals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSM81-LC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e- With windscreen, no cable. Phantom power required.\u003c\/p\u003e\n\u003cp\u003eThe SM81 is ruggedly constructed. It operates on phantom power and performs over a wide range of temperatures and humidity conditions. It is furnished with a swivel adapter, attenuator-switch lock, foam windscreen, and case for carrying and storage. Other accessories are available.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"innoindentin\"\u003e\n\u003cli\u003e0 Hz to 20 kHz frequency response\u003c\/li\u003e\n\u003cli\u003eFlat response curve for accurate reproduction of sound sources\u003c\/li\u003e\n\u003cli\u003eLow noise and high output clipping level\u003c\/li\u003e\n\u003cli\u003eLow distortion over a wide range of load impedances\u003c\/li\u003e\n\u003cli\u003eCardioid polar pattern, uniform with frequency and symmetric about axis, providing maximum rejection and minimum coloration of off-axis sounds\u003c\/li\u003e\n\u003cli\u003eLow RF susceptibility\u003c\/li\u003e\n\u003cli\u003eSelectable low-frequency response: flat, 6 or 18 dB\/octave rolloff\u003c\/li\u003e\n\u003cli\u003e0 dB\/10 dB lockable attenuator switch\u003c\/li\u003e\n\u003cli\u003ePhantom powering (DIN 45 596 voltages of 12 to 48 Vdc)\u003c\/li\u003e\n\u003cli\u003eRugged steel construction for durability\u003c\/li\u003e\n\u003cli\u003eField-usable over wide range of temperature and humidity conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCondenser (electret bias)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e20 to 20,000 Hz\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePolar Pattern\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eCardioid (unidirectional) response-uniform with frequency, symmetrical about axis\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eRated at 150 ohms (85 ohms actual)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdd\u003eRecommended minimum load impedance: 800 ohms (May be used with loads as low as 150 ohms with reduced clipping level)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOutput Configuration and Connector\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eBalanced, transformer-coupled output; male XLR connector\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eSensitivity (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eOpen Circuit Voltage: -45 dBV\/Pascal (5.6 mV\u003cbr\u003e(1 Pascal = 94 dB SPL)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eClipping Level (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e800 ohm Load: -4 dBV (0.63 V)\u003c\/dd\u003e\n\u003cdd\u003e150 ohm Load: -15 dBV (0.18 V)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eTotal Harmonic Distortion\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eLess than 0.5% (131 dB SPL at 250 Hz into 800 ohm load)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eMaximum SPL (at 1,000 Hz)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e800 ohm load: 136 dB (attenuator at 0) 146 dB (attenuator at -10)\u003c\/dd\u003e\n\u003cdd\u003e150 ohm load: 128 dB (attenuator at 0) 138 dB (attenuator at -10)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eHum Pickup\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e-3 dB equivalent SPL in a 1 mOe field (60 Hz)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\n\u003cstrong\u003eSelf-Noise\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(equivalent sound pressure levels; measured with true rms voltmeter)\u003c\/dt\u003e\n\u003cdd\u003e16 dB typical, A-weighted\u003c\/dd\u003e\n\u003cdd\u003e19 dB typical, weighted per DIN 45 405\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e78 dB (IEC 651)* at 94 dB SPL\u003c\/dd\u003e\n\u003cdd\u003e*S\/N ratio is difference between 94 dB SPL and product's equivalent self noise (SPL A-weighted).\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eOvervoltage and Reverse Polarity Protection\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eMax. external voltage applied to pins 2 and 3 with respect to pin 1: +52 Vdc\u003c\/dd\u003e\n\u003cdd\u003eReverse polarity protection: 200 mA max. (diode-clamped)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePolarity\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003ePositive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCartridge Capacitance\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e54 pF\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eLow Frequency Response Switch Positions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFlat; -6 dB\/octave below 100 Hz; -18 dB\/octave below 80 Hz\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eAttenuator Switch Positions (Lockable)\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e0 or -10 dB\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSupply Voltage: 11 to 52 Vdc, positive, pins 2 and 3\u003c\/dd\u003e\n\u003cdd\u003eCurrent Drain: 1.2 mA max.\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eEnvironmental Conditions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e\n\u003cdl\u003e\n\u003cdt\u003eTemperature:\u003c\/dt\u003e\n\u003cdd\u003eStorage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F)\u003c\/dd\u003e\n\u003cdd\u003eOperating: -6.7 degrees to 49 degrees C (20 degrees to 120 degrees F)\u003c\/dd\u003e\n\u003cdt\u003eHumidity:\u003c\/dt\u003e\n\u003cdd\u003eStorage 0 to 95% relative humidity at room temperature (72 degrees to 80 degrees F, 22 degrees to 27 degrees C)\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSteel construction with vinyl metallic paint finish and stainless steel screens\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eSee User Guide\u003c\/dd\u003e\n\u003cdd\u003e \u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNet: 230 grams (8 oz)\u003c\/dd\u003e\n\u003cdd\u003ePackaged: 740 grams (1 lb 10 oz)\u003c\/dd\u003e\n\u003c\/dl\u003e"}