Audio Authority Car Audio System installation manual Blue

4. Installing the Bus Cables

Pre-assembled bus cables or the raw materials to make the necessary bus cables on the job site were included with your system purchase. Pre-assembled bus cables have connectors every two feet (RCA patch cords are available in lengths from three to twenty feet). If you plan to make your bus cables on the job site, you’ll need a special assembly tool available from the factory.

If you are making your own bus cables, be very careful to follow the assembly instructions, especially con- cerning wire to connector polarity. Incorrect bus fabrication can cause system failure and damage!

Several types of bus cables are available for specific purposes:

				P r e - a s s e m b l e d	Cable	for	Plug	for	A s s e m b l y
Cable Type		Color	Code	Part Number	Site	Assembly	Site	Assembly	T o o l
System	Bus	y e l l o w / r e d / b l u e / b l a c k		802-307	871-055		916-0470		762-011
Speaker	Bus	green/white/brown gray		802 - 186	871 - 045		904 - 172		762 - 009
Low-level	Bus	RCA	patch cords	801-018 to 801-023 EX2, EX1			SGRCA		762 - 006
System	extension*	y e l l o w / r e d / b l u e / b l a c k		802-323	871-055		916-0470		762-011
Speaker	extension*	green/white/brown/gray		802 - 309	871 - 045		904 - 172		762 - 009

*The System and Speaker Bus extension cables allow you to join remote sections of the Access™ System with the main electronic component section of your display, as in the case of rear speaker towers.

Any RCA patch cords are suitable for the low level bus or component connections; however, we highly recommend that you use our special low-capacitance RCA patch cables for optimum system performance and reliability.

A. Install the System Bus

The system bus connects only to main switching modules (910, 920, 958, 942, 932, 940), not expanders (920X, 940X, 915X, 916X).

1. Use the pre-assembled system bus

cables supplied with your system or	922
install the 4 pin plugs onto the
system bus wire using the special

tool. If you are making your own system bus, be sure to leave a small amount of slack in the wire between the modules and be very careful to observe correct polarity.

2.Mate one plug of the system bus cable with either of the 4 pin headers marked with the yellow/red/blue/black color code on each switching module.

910

958 942 932 940

Figure 22.
Connect System
Bus to every	BLACK
Main Module.	BLUE
	YELLOW
	RED

YELLOW WIRE

ALWAYS ON

THIS SIDE OF

PLUG

3.Connect the system bus to all modules having headers marked SYSTEM BUS. The connectors are polarized, so they will only connect in one direction, but always make sure to prevent the possibility of plugging the system bus to the header backwards (see Figure 23).

GROUP

4.Start at one end of your system and work toward the other end, connect- ing the system bus to every main module.

DULE ID

SYSTEM

BUS

5.If you are using Pre-assembled buses, you may use a system bus exten- sion cable for long distances between modules, or carefully splice 18 gauge cable where needed.

Figure 23. Observe correct System Bus polarity. It is fine to leave one header unused.

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