Boston Acoustics GTA-504, GTA-502 Connections / Controls, Connections and Controls, Status LED

Connections and Controls

GTA-502

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GTA-802

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GTA-504
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	Speaker Level Input
ϖ	RCA Input (Left and Right)
ω	Gain (250mv to 5.0v - continuously variable)
ξ	Crossover Frequency Adjustment (50Hz to 200Hz - continuously variable)
ψ	Q-Tune™Equalization Boost (+6dB @ 45Hz)
ζ	Crosssover Filter Switch (HP / Off / LP)
{	GTA-RSL Port (Remote Gain)
	Speaker Output Block (Left / Right) or (LF / RF / LR / RR on GTA-504)
}	Status LED (Blue = Normal / Red = Fault Mode)
∼	Fuse (Replace with same value only, refer to specifications on page 2)
	Power Block (12v / Remote / Ground)

Status LED

The Boston Logo will illuminate “Blue” under normal operating conditions.

The LED will illuminate “Red” during start-up and under fault conditions. If the LED is still red after start-up, please refer to troubleshooting on page 12.

Speaker Level Input Cable

GTA amplifiers offer a dedicated speaker level input for ease installation into factory systems when an RCA (low level) signal is not available. Wiring code for the cable is industry standard;

White Solid = Left Positive	White w/ Black Stripe = Left Negative
Gray Solid = Right Positive	Gray w/ Black Stripe = Right Negative

Connections / Controls

Warning: Do not connect both Speaker Level and RCAs into the amplifier at the

same time as damage to the amplifier may occur.

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