Rockford Fosgate manual Using the 250.2 Balanced Line Inputs, Connecting the BLT

USING THE 250.2 BALANCED LINE INPUTS

The Balanced Line Inputs can be utilized with the optional Balanced Line Transmitter. Unlike standard RCA cables that use two wires to carry the audio signal and ground, balanced lines use three. In a balanced line, the output signal and its inverted replica travel down a pair of wires where the ground connects via the shield. As the amplifier receives the signals, it cancels out whatever signals are common to both wires. The use of balanced lines helps in preventing radiated noise pickup in the signal cables and has been proven effective in studio installation where long cable runs and magnetic fields make maintaining signal integrity difficult.

Connecting the BLT

								®			®
								BALANCED LINE TRANSMITTER
						–18V	+18V
					– L. SIG			– R. SIG
					+ L. SIG			+ R. SIG
								BALANCED LINE	LED		INPUT
								OUTPUT		L	R
						SHIELD
	L		L	R			R
			(Mono)
Speaker	Gain	Bass			Balanced	Gain	Speaker
+ L –	Phase	EQ	L	R	Input		– R	+
	0 – 180°	Balanced	Pass Thru Pass Thru			EZ Bridged 180°- 0°
		Unbalanced
• Signal Input Switch to Balanced for Balance Line Input
• Gain for Left and Right channels set to minimum

CAUTION!! You must turn the gain controls to minimum when using the Balanced Line Transmitter. If the input gains need to be adjusted, this can now be done in the Balanced Line Transmitter.

– 24 –