Impedance
Microphone rating impedance is 150 ohms (270 ohm actual) for connection to microphone inputs rated at 75 to 300 ohms
Output Level (at 1,000 Hz)
Open Circuit Voltage . . . . . . . . . . . ±78.0 dB (0.13 mV) 0 dB = 1 volt per microbar
Power Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±58.5 dB 0 dB = 1 milliwatt per 10 microbar
Polarity
Positive pressure on the diaphragm produces positive voltage on pin 2 relative to pin 3 of the output connector
Switch
Built±in On/Off switch, integral part of swivel mount connector Three pin professional type, designed to mate with Cannon XL series, Switchcraft A3 (Q.G.) se- ries, or equivalent
Case
Chrome±plated die casting
Dimensions
See Figure 3
OVERALL DIMENSIONS
FIGURE 3
Net Weight
625 grams (22 oz)
Certifications
Conforms to European Union directives, eligible to bear CE marking; meets European Union EMC Immunity Requirements (EN 50 082±1, 1992).
POLARITY
To test two microphones and their cables for common polarity, connect them to an amplifier and talk or sing into them while holding them three or four inches apart. The sound from the speakers should be the same when talking into either microphone or directly between them if they have common polarity. If the sound level drops drastically, or if a dead spot is found, when talking between the two micro- phones, either the microphones or their cables have differ- ent polarity. All cables and microphones can be tested in this manner to ensure that they have common polarity.
To reverse the polarity of a low±impedance microphone cable, use either a Shure A15PRS Switchable Phase Re- verser or interchange the wires connected to pins 2 and 3 of the connector. To reverse the polarity of a microphone, inter- change the cartridge leads (see Figure 4.) This should be performed by your dealer, the Shure Factory Service De- partment, or other qualified service personnel.
CARTRIDGE | SWITCH | XLR CONNECTOR | |||
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| BLACK |
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| YELLOW |
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| BLACK |
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| 2 | 1 |
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| YELLOW |
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| 3 |
CODED TERMINAL |
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| BLUE |
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| INTERNAL CONNECTIONS |
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| FIGURE 4 |
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OPTIONAL ACCESSORIES |
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Desk Stand | . . . . . | S37A, S39A | |||
Line Matching Transformer | . . . . A85F, A95UF | ||||
Cable and Plug Assembly | C25B, C25E, C25J | ||||
REPLACEMENT PARTS
Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R115
On/Off Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RK32S
Plug Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . RK169P
For additional service or parts information, please con- tact Shure's Service department at
The Sound of Professionals...Worldwide
Shure Brothers Incorporated
222 Hartrey Avenue, Evanston IL
Phone: | 847 | FAX: 847 | ||
In Europe, Phone: | ||||
Internationally, Phone: | 847 | FAX: 847 | ||
Website | www.shure.com |
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