Ampeg SVT-350H manual Front Panel Controls and Their Use

SVT-350H

The Front Panel Controls and Their Use

																						+12dB
			4	5	6		4	5	6		4	5	6	4	5	6		4	5	6
		3			7	3			7	3			7	3			7	3		7		0
		2			8 2				8 2				8 2				8 2			8
		1			9	1			9	1			9	1			9	1		9		–12dB
		Peak	0		10		0		10		0		10	0		10		0		10
	Pad																			Limit	EQ On	40Hz	80Hz	150Hz 300Hz 600Hz 900Hz	2kHz	5kHz	9kHz	On
0dB				Gain			Bass			Ultra Mid				Treble				Master						Graphic Equalizer					Power
1	2	3		4				5				6			7				8	9	10			11				12	13

1.0dB (INPUT): The signal output from an instrument (active or passive) or a line level signal may be connected here by means of a shielded instrument cable.

2.PAD: This switch, when depressed, attenuates the input signal by 15dB. Attenuation allows the Gain control (#4) to be used in a more usable (higher) position. If clipping is indicated with the Gain control way down, attenuation is needed.

3.PEAK LED: This LED flashes when the signal level into the preamp (excluding the graphic EQ) approaches clipping. Adjust the Gain control (#4) until a strong signal from your instrument causes this LED to flicker.

NOTE: If the LED flashes frequently with the gain at a low setting, use the Pad (#2) to attenuate the input signal and readjust the Gain.

4.GAIN: This serves as the input level control for the amplifier. For the best signal- to-noise set this control so the Peak LED (#3) flashes when you strike a string fairly hard.

5.BASS: This is the primary low frequency control. It allows for a range of 8dB of cut or boost at 50Hz.

6.ULTRA-MID:The primary midrange control. Rotate the control to the left of cen- ter for a “contoured” sound (more distant, less midrange output) or to the right of cen- ter for a sound which really cuts through.

7.TREBLE: This is the primary high fre- quency control. It allows for a range of 12dB boost or 19dB of cut at 5kHz.

8.MASTER: Set the overall output level of the amplifier with this control. The Effects Loop and Balanced Out (#20-24) are not affected by the Master control.

9.LIMIT: The SVT-350H uses an internal Optocoupler Limiter to assist in keeping the power amplifier’s output “clean” at extreme volume levels. (All amplifiers may begin to clip their output signals as they approach maximum output levels, resulting in poten- tially damaging distortion.) To engage the Limiter, depress the Limit switch. The adja- cent LED will illuminate whenever the lim- iter circuit is activated. This indicates that the amplifier is nearing full output and the limiter is keeping peak signals from clipping the output.

NOTE: Playing at full power with the Limiter off will give you increased output power, but the sound may be distorted. Use discretion when playing without the Limiter.

10.EQ ON SWITCH: Depress this switch to activate the Graphic EQ. The adjacent LED will illuminate when the EQ is on.

11.GRAPHIC EQ: These sliders control the output of the frequencies indicated below each control. The center position of each control is flat (no boost or cut).

12.POWER ON LED: This LED indicator illuminates when the POWER switch (#15) is ON.

13.POWER SWITCH: This heavy-duty rocker switch applies the power to the amplifier. The amp is ON when the top of the switch is depressed, OFF when the bottom of the switch is depressed.

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