Shure Model WL93 and SM93 Microphones are omnidirectional, subminiature, lavalier electret condenser microphones. Their visually unobtrusive design and tailored frequency response make them ideal for body-worn applications in TV broadcasting, theater, and sound reinforcement. Both the Model WL93 and the SM93 feature a small microphone element that provides full, clear sound comparable to that of much larger microphones.
The WL93, intended for wireless use, connects directly to a Shure wireless body-pack transmitter. The SM93, intended for wired applications, includes a preamplifier assembly for connection to three-pin professional (XLR) audio connectors. The SM93 requires phantom power, and operates over a range of 11 to 52 Vdc, covering both DIN and IEC phantom power standards.
| Version | Cable | Color |
|---|---|---|
| WL93 | 1.2 m (4 ft.) | Black matte microphone and cable with black accessories |
| SM93 | ||
| WL93-6 | 1.8 m (6 ft.) | |
| WL93T | 1.2 m (4 ft.) | Tan matte microphone and cable with tan accessories |
| WL93-6T | 1.8 m (6 ft.) |
Connect the male, four-pin miniature connector (TA4M) at the end of the 93 microphone cable to the supplied preamplifier (SM93) or to a Shure wireless body-pack (WL93).
NOTE: Do not connect the 93 microphone directly to a mixer without using the supplied preamplifier or body-pack.
The tie clips and mounting bracket provided with the WL93 and SM93 allow the user to wear the microphone in a variety of ways. To achieve optimum pickup, attach the microphone to the user's chest. You can also obtain high-quality sound when the microphone is worn in the hair, sewn into clothing, or attached to an acoustic instrument such as a guitar.
SEW-ON MOUNTING
Use the spring-loaded belt clip to hold the amplifier to a belt, skirt or trouser waistband, or inside pocket.
An acoustic foam windscreen is supplied to help reduce undesirable wind noise associated with outdoor miking.
Power the preamplifier supplied with the SM93 using any phantom supply providing 11 to 52 Vdc, such as the Shure Model PS1A Power Supply.
Use a minimum load impedance of 800 Ω or greater for maximum signal handling and minimum distortion. Load as low as 150 Ω can be used, but a reduction in output clipping level will result. Note that the power supply itself may add loading (3300 Ω in the Shure PS1A) to the microphone.
If connecting the 93 microphone to anything OTHER than a Shure wireless body-pack or the preamplifier supplied with the SM93, make sure it provides a regulated +5 Vdc source (40 µA minimum) at pin 2 of the microphone connector, as shown in "MICROPHONE WIRING DIAGRAM" Figure.
MICROPHONE WIRING DIAGRAM
Condenser (electret bias)
50 to 20,000 Hz
Omnidirectional , uniform with frequency
3000 Ω
open circuit voltage: −38 dBV/Pa(13 mV)
at 1 kHz
0.25 V at 120 dB
120 dB
102 dB
18 dB typical , A-Weighted
76 dB at 94 dB SPL (IEC 651)
Positive pressure on microphone diaphragm produces positive voltage on pins 3 and 4 with respect to pin 1 (ground)*
2 to 10 V; 5 V nominal (pin 2 to pins 3 and 4);Current Drain 40 µA typical
| Operating Temperature | : −18 to 57°C (0 to 135°F) |
| Storage Temperature | : −29 to 74°C (−20 to 165°F)) |
Black1.27 m (4.17 ft), attached , two-conductor , shielded , terminated by miniature Connector Type TA4F (: Tan 1.27 m[4.17 ft])
Microphone: Black ABS thermoplastic case with stainless-steel-mesh grille
Microphone: 16 g (0.57 oz.)
*Produces positive voltage at pin 2 of Shure L4/EC4 wireless receiver three-pin connector.
Condenser (electret bias)
80 to 20, 000 Hz , dB/octave below 100 Hz
Omnidirectional , uniform with frequency
rated at 150 Ω (90 Ω actual) Recommended minimum load impedance: 800 Ω (May be used with loads as low as 150 Ω with reduced clipping level)
open circuit voltage: −43 dBV/Pa(7 .0 mV)
at 1 kHz
−18 dBV (0.13 V) minimum
120 dB
98 dB
| A-Weighted | 22 dB typical |
| weighted per DIN | 26 dB 45 405 |
−4 dB equivalent SPL in a 1millioersted field (60 Hz)
72 dB at 94 dB SPL (IEC 651)
Positive pressure on microphone diaphragm produces positive voltage on pin 2 relative to pin 3 of preamplifier output cable connector
11 to 52 V DC phantom . Protected against reverse voltage application . Current Drain0.33 mA
| Operating Temperature | : −18 to 57°C (0 to 135°F) |
| Storage Temperature | : −29 to 74°C (−20 to 165°F) |
Black1.27 m (4.17 ft), attached , two-conductor , shielded , terminated by miniature Connector Type (TA4F)
| Microphone | Black ABS thermoplastic case with stainless-steel-mesh grille |
| Preamplifier | Steel case with non-reflective black finish, black-chrome belt clip |
| Microphone | 16 g (0.57 oz.) |
| Preamplifier | : 118 g (4.17 oz.) |
[1]1 Pascal = 94 dB SPL
TEST CIRCUIT
TYPICAL FREQUENCY RESPONSE
OVERALL DIMENSIONS
SM93 PREAMPLIFIER CIRCUIT DIAGRAM
NOTES:
| Preamplifier (SM93) | 90A4360 |
| Black Foam Windscreens (4) for SM93 and WL93* | RK355WS |
| Black Single Mount Tie-Clips (2) for SM93 and WL93* | RK354SB |
| Double Mount Tie Clips (2) for SM93 and WL93 | RK307DB |
| Tan Foam Windscreens (2) and Tie Clips (2) for SM93 and WL93** | RK304T |
| Black Sew-on Mounting Bracket (WL93, SM93) | 65A2068A |
| Tan Sew-on Mounting Bracket (WL93T) | 65A2068B |
| Carrying/Storage Bag | 95A2313 |
*Replacements furnished in multiples of 4.
**RK304 includes 2 tie clips and 2 windscreens.
| In-Line On/Off Switch | WA360 |
Eligible to bear CE Marking. Conforms to European EMC Directive 89/336/EEC. Meets applicable tests and performance criteria in European Standard EN55103 (1996) parts 1 and 2, for residential (E1) and light industrial (E2) environments.
The CE Declaration of Conformity can be obtained from: www.shure.com/europe/compliance
Authorized European representative:
Shure Europe GmbH
Headquarters Europe, Middle East & Africa
Department: EMEA Approval
Jakob-Dieffenbacher-Str. 12
75031 Eppingen, Germany
Phone: +49-7262-92 49 0
Fax: +49-7262-92 49 11 4
Email: info@shure.de
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