Ampeg SVT-4 PRO User Manual download pdf

1. INPUT: Connect your bass guitar here using a shielded

instrument cable.

2. TUNER O U T: This jack is provided for connection to an

electronic tuner and is always “live,” even when the Mute

switch (3) is engaged. This allows for “silent tuning” as well

as providing a monitor feed which stays hot even when the

house mix is muted. In addition, this jack may also be used

as a -6dB input (when not connected to a tuner).

3. MUTE: This switch, when depressed, mutes all outputs

except the Tuner Outs. This is excellent for tuning your bass

with an electric tuner without having to adjust any levels to

turn down your house volume. A footswitch can also be

used to control muting as long as the Mute switch on the

front panel is left in the “out” position. (The front panel switch

is still active with the footswitch connected; see 38, rear

p a n e l . )

4. -15dB: This switch, when depressed, will attenuate the

input signal by 15dB. If your bass has active pickups,

depress this switch to better accommodate its output signal

l e v e l .

5. GAIN: This controls the gain of the preamp. Adjust this

control until the Peak LED (6) flashes on strong signal

peaks (but is not illuminated constantly while playing). To

obtain the best signal to noise ratio, set the Gain control to

the highest possible setting and adjust the Master (19) to

obtain the desired volume level.

6. PEAK L E D : This LED will illuminate when the preamp

signal is nearing its clipping level, indicating optimum gain

s e t t i n g .

7. COMPRESSION: This controls the amount of signal

compression. At the fully counter clockwise position there is

no compression; at fully clockwise the compression ratio is

10:1. The sonic effect of compression is reduced dynamics,

increase sustain and a more consistent output level regard-

less of how light or hard the strings are played. The com-

pressor is very transparent – that is, there is very little eff e c t

on the tone of your instrument.

8. ULT R AH I G H : This switch, when depressed, increases

the high frequency output by 6dB at 5kHz.

9. ULT R AL O W: This switch, when depressed, greatly

enhances the amount of low-end bass tones which you can

feel and hear, especially the low E and low B strings (5-

string basses).

10. BASS: This control allows for 12dB of cut or boost at

50Hz. The low frequency output is flat at the center posi-

t i o n .

11. MIDRANGE:This control allows for 15dB of cut or boost

at the center frequency selected by the Frequency control

(see 12). The midrange output is flat at the center position.

12. FREQUENCY:This control allows you to select the cen-

ter frequency for the midrange control (11), giving you a

choice of five “voices” for the midrange. The numbers cor-

respond to the following center frequencies as indicated:

1=220Hz, 2=450Hz, 3=800Hz, 4=1.6kHz, 5=3kHz.

13. TREBLE:This control allows for 19dB of cut or 14dB of

boost at 5kHz. The high frequency output is flat at the cen-

ter position.

14. BRIGHT: This switch, when depressed, adds a more

lively top end response to the input signal.

15. GRAPHIC E Q : This switch, when depressed, enables

the 9-band Graphic EQ (see 23 and 24). The sound of your

bass will only be affected by the settings of the EQ slider

controls when this switch is depressed, or when a

footswitch is pressed. (A footswitch will override the front

panel switch; see 38, rear panel.)

1 6 . L I N EO U TL E V E L : This controls the strength of the

signal at the Line Out jacks (40,41,44,45, rear panel).

17. EFFECTS BYPA S S : This switch, when depressed,

bypasses the Effects Loop. (A footswitch will override the

front panel switch; see 38, rear panel.)

18. LIMIT DEFEAT: The SVT-4 PRO employs internal lim-

iter circuits to help keep the power amplifier’s output clean

at extreme volume levels. (All amplifiers may begin to clip

their output signals as they approach maximum output lev-

els, resulting in potentially speaker-damaging distortion.)

These circuits may be defeated by depressing this switch,

which may result in an increase in output power but with the

possibility of distortion. Use discretion whenever playing

with the Limit circuits defeated.

19. MASTER: This controls the overall output level of the

a m p l i f i e r. For the best results, adjust the Gain control as

directed (see 5) and use this control to obtain the desired

volume level.

20. LIMIT LED:This LED will flash any time the internal limit

circuit is called upon to keep the amplifier’s output signal

clean. This indicates that the amplifier is nearing full output

and the limiter is keeping it from clipping the output signal.

21. CROSSOVER FREQUENCY: This sets the crossover

point between the Biamp High and Biamp Low Outputs

when using the amplifier in the biamp mode. (See pages 13

& 14.)

22. CROSSOVER BALANCE: This adjusts the relative

level between the low and high frequency biamp signals

when using the amplifier in the biamp mode.

2 3 . 9 - B A N DG R A P H I CE Q : These sliders control the

amplitude of the signal at the frequency indicated below

each control. The center position of each control is flat: slid-

ing the control upward will increase the output signal level of

that frequency; sliding the control downward will decrease it.

2 4 . L E V E L : This is the output volume control for the

Graphic EQ and only affects the signal when the EQ is

engaged. If the EQ’d signal is too soft, slide the Level con-

trol up; if it’s too loud, slide the control down.

2 5 . P O W E RL E D : This LED illuminates green when the

Power switch (27) is depressed.

26. A C T I V EL E D : This LED illuminates when the Graphic

EQ switch (15) is depressed.

2 7 . POWER: This heavy-duty rocker switch applies A C

power to the amplifier: the amp is ON when the top of the

switch is depressed, OFF when the bottom of the switch is

d e p r e s s e d .

SVT-4 PRO

front panel:

Technical Specifications:

OUTPUT POWER RATING 1600 watts Mono Bridged @ 4 ohms (1200 watts continuous)

1200 watts Mono Bridged @ 8 ohms (900 watts continuous)

Mono Bridged @ 4 ohms (1200 watts continuous)

2 x 900 watts @ 2 ohms (600 watts continuous)

2 x 625 watts @ 4 ohms (490 watts continuous)

2 x 350 watts @ 8 ohms (300 watts continuous)

TONECONTROL RANGE

BASS: ±12dB @ 50Hz

MIDRANGE: ±15dB @ selected frequency (220, 450, 800, 1.6k or 3kHz)

TREBLE: +14, -19dB @ 5kHz

1 2 3 4

SVT-4 PRO 1

Summary of Contents

Page 1 - SVT-4 PRO

1. INPUT: Connect your bass guitar here using a shieldedinstrument cable.2. TUNER O U T: This jack is provided for connection to anelectronic tuner an

Page 2

2 8 . C I R C U I TB R E A K E R : The SVT-4 PRO employs anAC line circuit breaker to help protect against damages dueto excessive current demands.

Page 3

SVT-4 PROhookups:In the example shown below, the SVT-4 PRO’s two internal power amplifiers will power both a full range cabinet and a low frequencycab

Page 4

SVT-4 PROhookups:In the example shown below, the SVT-4 PRO’s two internal power amplifiers are bridged together to produce maximum output power. Set t

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Ampeg SVT-4 PRO User Manual

Browse online or download User Manual for Musical Instrument Amplifier Ampeg SVT-4 PRO. SVT-4 PRO front panel:

Summary of Contents

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