Roland SRA-200E important safety instructions Connecting Other Devices, BTL Connection

Connecting Other Devices

Please refer to p. 10 and p. 11.

Stereo Connection

Channel A and Channel B may operate independently. In this mode, the SRA-200E functions as a stereo power amp, with 100 watts per channel (at 8 ohms).

BTL Connection

If you need greater volume, you can connect a single speaker to each SRA-200E. In this mode, Channel A and Channel B are bridged internally by means of a BTL connection. BTL stands for Balanced Transformer- Less, and is a method in which the phase of one chan- nel is inverted, and the output taken from the + jack of both channels. This provides approximately double the output voltage modulation, and in the case of the SRA- 200E allows it to function as a 300 W (8 ohm) monaural power amp.

One SRA-200E connected to two speakers

	Signal		Signal
(Right Channel)		(Left Channel)

Right	Left
Speaker	Speaker	One SRA-200E connected to one speakers
		Signal

●MODE switch: Set the MODE switch on the rear panel to "STEREO."

●Connecting input: Connect the input carrying the left signal to the Channel A INPUT connector, and the input carrying the right signal to the Channel B INPUT connector.

●Speaker connections: Connect the speaker for the left channel to the Channel A speaker terminal, and the speaker for the right channel to the Channel B speaker terminal.

* Use speaker systems with a total impedance of 4 ohms or higher for each channel.

* Take care not to connect speakers to the terminals with the polarity reversed.

●Adjusting the volume: Adjust the volume of the left channel with the Channel A attenuator and the volume of the right channel with the Channel B attenuator.

Speaker

●MODE switch: Set the MODE switch on the rear panel to "BTL."

●Connecting input: Connect the input carrying the signal to the Channel A INPUT connector.

●Speaker connections: Connect the speakers to the red Channel A and Channel B speaker terminals (BTL). In this case, the polarity of Channel A is "+".

* Use speaker systems with a total impedance of 8 ohms or higher for each channel.

* Take care not to connect speakers to the terminals with the polarity reversed.

●Adjusting volume: Adjust the volume with the Channel A attenuator.

* The Channel B attenuator does not function in BTL mode.

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