17: EXTERNAL SPEAKER: Use this jack to connect the amplifier to an external speaker. The internal speaker is disconnected when this jack is used. The minimum impedance for the external speaker is 4 ohms. 18: ON LED: This LED will illuminate when power is applied to the amplifier. 19: POWER: Use this switch to turn the amplifier on and off. 20: AC LINE CORD: (Rear panel, not shown:) This grounded power cord is to be plugged into a grounded power outlet, wired to current electric codes and compatible with voltage, power, and frequency requirements stated on the rear panel. Do not attempt to defeat the safety ground connection. 21: FUSE: (Rear panel, not shown:) The fuse protects the amplifier from damages caused by a faulty AC power source and/or other problems. If the fuse opens, replace it ONLY with the same size and type. If fuses continue to fail, check the AC source � if the source is okay, contact your Crate dealer for service information. 22: CHANNEL SELECT / GAIN FOOTSWITCH JACK: (Rear panel, not shown:) Use this jack to connect the stereo 1/4� plug of the supplied three-button footswitch for remote control of channel selection and gain selection. 23: REVERB FOOTSWITCH JACK: (Rear panel, not shown:) Use this jack to connect the mono 1/4� plug of the supplied three-button footswitch for remote control of DSP on and off.
CONNECTING TO THE INSERT JACK: The Insert jack (#16) allows you to patch an external effects device into the amplifier prior to its power amp stage. Use Crate�s STP201, STP202 or STP203 stereo-to-mono Y cord or an adapter such as Crate�s YPP117 and two 1/4� mono signal cables to connect the effect as shown to the immediate right.
Stereo-to-mono Y-cord:
to Insert jack TIP RING SLEEVE
Y-adapter and 2 cables:
RETURN SEND GROUND TIP RING SLEEVE to Insert jack
