Carvin CX420 manual Power LED, Phantom Power Switch and LED, Graphic Equalizer

10. POWER LED

The POWER LED indicates when the mixer is powered up.

11. PHANTOM POWER SWITCH AND LED

The PHANTOM power switch turns on the microphone phantom power in the channel’s XLR jack. This power is used for supplying a bias voltage to con- denser microphones. The LED indicates the phantom power is turned on. The phantom power will not damage dynamic microphones.

12. THE GRAPHIC EQUALIZER

Each mixer has a nine band graphic EQ (equalizer). The graphic EQ is dedicat- ed to the main output following (or post) the amp patch jack of the mixer.

The 9 band Graphic EQ provides a wide degree of tonal flexibility.

The Frequencies:

Here are some tonal reference ranges for the individual sliders to help relate the frequencies in hertz to perceived tonal changes.

In order from left to right:

-the 63 Hz slider effects deep sub bass levels. -the 125 Hz is typical bass adjustments.

-the 250, 500 and 1K Hz are for low mid and high mid adjustments. -the 2K and 4K Hz are for lower treble adjustments.

-the 8K and 16K Hz are for the very high treble adjustments.

Adjusting:

With the sliders in their center detent position, they do not affect the audio sig- nal. When a slider is raised or lowered from the center position, it boosts and cuts respectively the level of a narrow frequency band assigned to that particular slider. It is recommended that all sliders are set in their center position before equalizing your tone. Typically low frequency feedback is in the 125 and 250 Hz range while high feedback is in the 2k and 4k Hz range. Occasionally one fre- quency (slider) of the equalizer will have to be pulled down to -12dB to stop feedback. If many of the sliders have to be pulled down to stop feedback, the placement of the speakers with respect to the microphones may need to be reconsidered. As much as possible try to have the main speaker facing away from and in front of the microphones, not on stage behind them. The graphic EQ is mainly used to “equalize” the response of the main room and reduce feed- back from microphones. Don’t be afraid to use the Graphic Equalizer, but take care not to over-adjust as this may put too much volume in one area of the fre- quency spectrum affecting the overall sound.

														MONITORS PATCHED TO			MIXER POWER AMP																										12
SPEAKER	OUTPUTS				GRAPHICEQ										1K500250 2K 4K 8K 16K							CX630								PHANTOM	4	73	82	91	100	REVERB	4	73	82	91	100	RTNEFFTAPE	AMPRETURNPATCH MONITOR MAIN	MONITORPATCH
																															SENDTAPE									RETURNTAPE
																													POWER
																															6						6
																															5						5
															125										MAIN		3 7	2 8	1 9	0 10		3 7	2 8	1 9	010	MONITOR		3 7	2 8	1 9	010	SENDEFF	SEND	EFFECTS
						+12	8		4	0	4		8	–12	63											4					4						4
																										6					6						6
																										5					5						5
	6	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	6											MIC	LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4
	5	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	5											MIC	LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4
	4	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	4											MIC	LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4
	3	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	3												LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4
	2	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	2												LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4
	1	HI	3	6 6	9 9	1212	MID	6 6	9 9	1212	LOW	3	6 6	9 9	1212	EFF 4REV	3 7	2 8	1 9	010	MON	3 7	2 8	1 9	010	4	3 7	2 8	1 9	010	dB	1												LINE
																															20 LEVEL
			3				3					3				6					6					6
		0					0				0					5					5					5
							3														4

PA CABINET

PA CABINET

EXTERNAL POWERED MAIN SPEAKERS

7 12