Crown Audio 28M Setup, 17.3 In 43.8 cm, 1.7 In 4.3 cm, 10.7 In 27.18 cm 11.9 In 30.2 cm, page

Commercial Audio Series Mixers

2 Setup

2.1 Installation

CAUTION: Before you begin, make sure your mixer is disconnected from the power source, with the power switch in the “off” position and all level controls turned completely down (counterclockwise).

Use a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B). See Figure 2.1 for amplifi er dimensions.

You may also stack mixers without using a cabinet, or you may place a single mixer on a surface.

NOTE: When transporting in a rack, mixers should be supported at the front and back.

The side walls of the rack should be a minimum of two inches (5.1 cm) away from the amplifi er sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the mixer back panel.

2.2 How to Attach Rack Ears

1. Locate the two rack ears supplied.

2.See Figure 2.2. Remove the two screws from each side of the chassis near the front.

3. Place a rack ear fl ush with the right front of the chassis.

4.Insert a screw that you removed into the bottom hole of the rack ear and chassis. Screw it in.

5.Insert a screw that you removed into the top holeof the rack ear and chassis. Screw it in.6. Repeat steps 3-5 for the left side of the chassis.Figure 2.2 How to Connect Rack Ears

	1		2		3		4		5		6		7		8		SPI	CLIP		SPI	CLIP
	10		10		10		10		10		10		10		10			10			10	POWER
5	15	5	15	5	15	5	15	5	15	5	15	5	15	5	15	5		15	5		15
0	20	0	20	0	20	0	20	0	20	0	20	0	20	0	20		0	20		0	20
B	T	B	T	B	T	B	T	B	T	B	T	B	T	B	T		MASTER 1			MASTER 2

17.3In.

43.8cm

1.7In.

4.3cm

10.7In.

27.18 cm

11.9In.

30.2cm

Figure 2.1 Dimensions

page 8 Operation Manual