Crate Amplifiers GX-140CH Rear Panel, Connecting to the Insert jack, GX-140C/CHAmplifier

GX-140C/CH Amplifier

REAR PANEL:

22 23 24 25 26 27 28 29

22:AC LINE IN: This heavy-duty, grounded, three-wire power cord is to be plugged into ONLY a safely-wired, grounded 120 volt, 60 cycle AC power outlet. DO NOT attempt to defeat the ground connection of this cable! If your GX-140C/CH was purchased outside of the United States, see the unit’s rear panel for its power rating and fol- low the above guidelines.

23,24: POWER AMP 1, 2 SPEAKERS: You may connect the outputs of the GX-140C/CH to your external speakers using these jacks. When connecting speakers use a matched pair; that is, two speakers with the same imped- ance to insure optimum performance from the amplifier. The amp 2 speaker jack (#24) carries the chorus signal (when the chorus is on) while the amp 1 jack (#23) is “dry” (without the chorus effect).

NOTE: The total impedance for each side should not be less than 4 ohms.

WARNING: DO NOT attempt to use headphones in the Speaker jacks! Permanent hearing damage could result!

28:CHANNEL/GAIN SELECT FOOTSWITCH: Plug a dual footswitch (such as the Crate CFP-2 or the “stereo” plug of the Crate CFP-3) here to control Channel Selection and the Gain Select button. The footswitch overrides the front panel switches (#5 and 9) and is wired as follows: Ring = Gain Select, tip = Channels, sleeve = ground.

29:CHORUS/EXPANDER FOOTSWITCH: Plug a single footswitch (such as the Crate CFP-1 or the “mono” plug of the Crate CFP-3) here to control the Chorus/Expander. The footswitch overrides the front panel on/off switch (#17); selection between the Chorus and the Expander is still controlled by the front panel selector switch (#18).

Connecting to the Insert jack:

The Insert jack (#16) lets you patch external effects into the amplifier just 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 2 1/4” mono signal cables to connect to the effect as shown below.

IMPORTANT NOTE ABOUT CERTAIN EXPORT UNITS: In some areas 1/4” speaker jacks are not acceptable for use on amplifiers capable of high output power levels. For this reason the 1/4” speaker jacks on your amplifier may be sealed – in this case, use the Speakon® jacks provided.

25:STEREO LINE IN: When using a stereo effects deivce, connect its output here. This stereo 1/4” phone jack is wired as follows: Ring = amp 1, tip = amp 2, sleeve = ground.

26:STEREO LINE OUT: When using a stereo effects deivce, connect this jack to its input. This stereo 1/4” phone jack is wired as follows: Ring = output 1, tip = out- put 2, sleeve = ground.

If your effects device has stereo input and output jacks, use a pair of three-conductor stereo patch cords to con- nect to it. If the device has separate left and right jacks, use a pair of one-stereo-male to two-mono-female Y-adapters to make the connections, as shown to the right.

Stereo-to-mono Y-cord:			Y-adapter and 2 cables:
to Insert	TIP		RETURN	TIP	to Insert
jack	RING		SEND	RING	jack
	SLEEVE		GROUND	SLEEVE
(STP201, 3'				(YPP117)
STP202, 6'
STP203, 9')
				T	R I
				I P	N G
T		R I
I P		N G
				(1/4"-TO-1/4"
				MONO SHIELDED
				CABLES)
to	to			to	to
effect	effect			effect	effect
"OUT"	"IN"			"OUT"	"IN"
jack	jack			jack	jack
External Effect				External Effect

Speakon is a registered trademark of Neutrik U.S.A.