Mesa/Boogie Mark IV Amplifier Rhythm 1 Gain, Pull Bright, Rhythm 1 Treble, Controls really strong

CONTROLS:

RHYTHM 1 GAIN:

Setting the RHYTHM 1 mode adjusts the input sensitivity for the clean RHYTHM mode. With most guitars, this mode stays clean until

around 8 where it begins to overdrive. Use the R1 MASTER to control loudness if you want slight overdrive at low volumes. This mode
							was very carefully designed to provide great rhythm sounds, from the best of vintage, Fender-type (clean or solo)
							to a more modern, shimmering “funk rhythm” sound. Be sure to try this mode played really loud; you’ll love it for
9		6				BRIGHT
	7			5			blues or rock. (See the “Traditional Blues” setting on the Sample Settings sheet found on page 15 of this manual.)
8
				4
10				3		PULL
				2
	0		1
RHY1 GAIN
	INPUT				INSTRUMENT

PULL BRIGHT:

This function adds shimmer and sparkle to your sound when activated. Note that the amount of added brightness varies with the R1

						GAIN setting: more brights at lower settings, less at higher. For super shimmer, run the GAIN at around	3 or 4
						with the BRIGHT pulled out. For the most naturally balanced sound, run the GAIN at around 6 or 7	with the
		6			BRIGHT
8	7			5		BRIGHT pulled.
				4
9				3
10					PULL
				2
	0		1

RHY1 GAIN

RHYTHM 1 TREBLE:

This control dials in the MARK IV’S predominate tonal characteristic. In the 0 to 3 range, a dark, warm jazz tone is obtainable.

Most common settings are in the																	5 thru 7 range and note how the overall “gain” of the mode increases with higher TREBLE
																	control settings. This is because so much of the energy of the musical spectrum is channeled
																	through this most powerful tone control. As this is true for all modes, the MARK IV includes three
		0				BRIGHTPULL	4				FATPULL	10
					4					8				3			separate TREBLE controls.
			6				0						5
	8	7			5			109				6		4
							1
												7
	9				3		2			7		8			1	2
	10				2					6		9
							3		5					0
				1
	RHY1 GAIN						RHY2 GAIN					R1 TREBLE

R1 + R2 BASS & R1 + R2 MID:

These are the only shared tone controls aboard the MARK IV. Because of internal circuitry changes which occur when switching modes, you will most likely find R1’s optimum setting works well for RHYTHM 2. The effect of these two tone controls is largely determined by the setting of the TREBLE controls. Only when the TREBLE control is set very low (or off) are the BASS and MID

controls really strong.

8	7	6	5
			4
9			3

10	2
0	1

R1TREBLE

6	5	4
7		3
8			1	2
9
10		0

R1+ R2 BASS

6	5	4
7		3
8			1	2
9
10		0

R1+ R2 MID

At normal TREBLE control settings, their effect is greatly diminished and they serve mainly to round out and fill up the overall tone. Do note however, that setting the BASS control too high can result in unwanted flubbiness, especially in RHYTHM 2. The recommended setting for the BASS control is 0 to 3 and for the MID control it is 4 to 7 .

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