Crate Amplifiers BT220H manual Rear Panel, Balanced Line OUT

BT220H Bass Amplifier

10 11 12 13 14 15 16 17 18 19

The Rear Panel:

20.AC LINE CORD (not shown): The grounded power cord should only be plugged into a grounded power outlet that meets all applicable electrical codes and is compatible with the volt- age, power, and frequency require- ments stated on the rear panel. Do not attempt to defeat the safety ground connection.

21.PREAMP OUT: Use this jack to send a line level signal to an external amplifier, mixing board, recording con- sole, or external effects device.

22.POWER AMP IN: Use this jack to connect a line level signal from an exter- nal preamp or external effects device into the power amp. The internal pre- amp is deactivated when this jack is used.

23.EFFECTS LOOP SEND: Use this jack to connect an external signal processor to the amplifier by means of a shielded signal cable. Connect the other end of this cable to the input jack of the external processor.

21
22		PREAMP	POWER AMP
		OUT		IN
				BALANCED LINE OUT
				PRE
	EFFECTS LOOP			POST
23
24				GND
	SEND	RETURN		GND LIFT	VOLUME

CHANNEL /

OCTAVE

FOOTSWITCH

25 26 27 28 29 30

24.EFFECTS LOOP RETURN: Use this jack to connect an external signal processor to the amplifier by means of a shield- ed signal cable. Connect the other end of this cable to the output jack of the external processor.

25.EXTERNAL SPEAKERS: Use these parallel 1/4” jacks to connect the amplifier to your speaker cabinet(s). The mini- mum acceptable impedance for your speaker cabinet(s) is four ohms.

26.BALANCED LINE OUT: Use this XLR jack to send a balanced line level signal to an external power amplifier, mixing board, or recording console.

27.FOOTSWITCH: Connect a two-button footswitch (such as the Crate CFS-2) here for remote control of the channel selection/“blend” (see #8) and octave on/off. (When the Channel Switch [#8] is depressed, the footswitch switches between the Clean channel and the Distortion channel; when the switch is in the out position, the Clean channel is always active, and the footswitch turns the Distortion channel on and off, allowing you a blend of both channels.)

28.GROUND LIFT: This switch, when depressed, lifts the ground connection at the Balanced Line Out jack (#26). This may help reduce hum in the Balanced Line Out signal if necessary.

29.PRE/POST: Use this switch to determine whether the Balanced Line Out signal is Post-EQ (switch depressed) or Pre- EQ (switch in the out position).

30.VOLUME: Use this control to adjust the signal level at the Balanced Line Out jack (#26).

5