Crown Audio GLM-200 Operating Instructions, Suggestions for Use, Warranty, Service, 7/08, 505 in

Fig. 4. GLM-200 Polar Response

330°	0°	30°
	FRONT
300°	-0 dB	60°
	-5
	-10
	-15
	-20
270°		90°
240°		1000 Hz 120°
		300 Hz
	REAR	3000 Hz
210°	180°	150°

Fig. 5. Dimensions

.310 in.

7.9 mm

	.505 in.
.755 in.	12.8 mm
19.2 mm

.680 in.	.185 in. dia.
17.3 mm
	MAX
	4.7 mm

Fig. 6.	Battery Phantom Supplies
		1:1 XFMR
1	2	CT		2	1	TO MIXER
TO MIC
	3			3		MIC INPUT
		+
		18V (TWO 9-V ALKALINE)
			100mF 25V
			+
1	2	1K		2	1 TO MIXER
TO MIC						MIC INPUT
	3	1K	100mF 25V	3
			+

+

18V (TWO 9-V ALKALINE)

MATCH RESISTORS WITHIN 1% (10 OHMS)

Operating Instructions

The GLM-100 and GLM-200 require 12 to 48V phantom power to operate. Crown makes a model PH-1A single-channel phantom supply powered by battery or AC adapter. The adapter should provide 24V DC from a 1/8-inch (3.5mm) phone plug with positive tip. For special applications you can make your own battery supply as suggested in Figure 6.

Using a microphone cable, plug the GLM-100 or GLM-200 into a phantom power supply. Connect the power-supply output to a mixer mic input, or if your mixer has phantom power built in, plug the GLM directly into a mixer mic input.

For outdoor or vocal use, place the included GLM- WS2 Windscreen on the microphone to reduce wind noise and breath popping.

The front of the microphone is indicated by the word “FRONT” on the microphone housing.

Although the cable is rugged, excessive abuse such as tugging and twisting will shorten its life. It should last indefinitely if treated with care. The cable has been kept short to allow easy wrapping and to reduce the amount of thin cable on stage.

As with all electret condenser microphones, the GLM should be kept out of hot environments (greater than 130 degrees F or 54.5 degrees C). Following this suggestion will ensure years of reli- able performance from the mic capsule.

Suggestions for Use

Detailed GLM application notes are in the Crown Microphone Application Guide available free from your dealer, directly from Crown, or online at www.crownaudio.com.

Architects' and Engineers' Specifications

GLM-100

The microphone shall be the Crown GLM-100.The microphone shall be an omnidirectional electret condenser type requiring 12 to 48 volts phantom powering. A smooth frequency response from 20 Hz to 20,000 Hz shall be obtained, with a uniform off-axis response.The microphone shall have an open-circuit sensitivity of 3.2 mV/Pa. A perma- nently attached, 8 foot (2.5m), two-conductor, shielded cable with 3-pin pro audio connector shall be supplied with the microphone. The microphone shall accept a 150 dB SPL input while providing no greater than 3% THD (open circuit termination). Equivalent noise shall be 28 dBA typical (0 dB =

.0002 dyne/cm2 ). SPL for 3% THD shall be 150 dB. The Crown GLM-100 microphone is specified.

GLM-100

GLM-200

GLM-200

The microphone shall be the Crown GLM-200. The microphone shall be a hypercardioid electret condenser type requiring 12 to 48 volts phantom power. A smooth frequency response from 60 Hz to 20,000 Hz shall be obtained, with a uniform off-axis response. The microphone shall have an open-circuit sensitivity of 6 mV/Pa. A permanently attached, 8 foot (2.5m), two-conductor, shielded cable with XLR-type connector shall be supplied with the microphone. The microphone shall accept a 131 dB SPL input while providing no greater than 3% THD (open circuit termination). Equiva- lent noise shall be 31 dBA typical (0 dB = .0002 dyne/cm2 ). The Crown GLM-200 microphone is specified.

Warranty

Crown professional microphones are guaranteed against malfunction for a period of three years from date of original purchase. Please refer to the enclosed full warranty statement for more detail.

Service

If the unit fails to work, recheck all your connec- tions as described in the Installation Section. Check the cables. Also check the power supply to verify that it is supplying correct voltage. If service is required, return the microphone in its original packaging to: Crown Factory Service, 1718 West Mishawaka Road, Elkhart, Indiana 46517-9439. A Service Return Authorization (SRA) is required for product being sent to the factory for service. An SRA can be completed on line at www.crownaudio.com/support/factserv. htm. For further assistance or technical support call 800-342-6939.

Crown International, Inc. 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 TEL: 574-294-8000 FAX: 574-294-8FAX www.crownaudio.com

© 2008 by Crown Audio®, Inc.

Specifications subject to change without prior notice. Latest information available online at www.crownaudio.com. Crown and Crown Audio are registered trademarks of Crown International.

7/08 136453-4