Ampeg SVT-5 PRO Specifications download pdf (Page 3)

SVT-3 PRO Bass Amplifier

The Front Panel Controls and Their Use

+12dB

-12dB

LEVEL

+8dB

-10dB

MUTE

PEAK /

MUTE

BRT

-15dB

33Hz 9kHz5kHz2kHz900Hz600Hz300Hz150Hz80Hz

POWER

MASTER TUBE GAINTREBLEFREQUENCYMIDRANGEBASSGAININPUT

1 4 16 19 205 8 9 11 12 181713102 3 6 7 14 15

1. INPUT: The signal output from an instrument

(active or passive) or a line level signal may be con-

nected here by means of a shielded instrument

cable.

2. BRIGHT: This switch, when depressed, adds a

more lively top end response to the input signal.

3. -15dB: This switch, when depressed, attenuates

the input signal by 15dB. Attenuation allows the Gain

control (#5) to be used over a larger portion of its

range. If clipping is indicated with the Gain control

way down, attenuation is needed.

4. PEAK LED: This LED flashes when the signal

level into the preamp (excluding the graphic EQ)

approaches clipping. Adjust the Gain control (#5) 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 -15dB switch (#3) to attenuate

the input signal and readjust the Gain.

5. GAIN:This serves as the input level control for the

amplifier. For the best signal to noise ratio set this

control so the Peak LED (#3) flashes when you strike

a string fairly hard.

6. ULTRA HIGH: This switch, when depressed,

enhances the amount of high frequency output by

6dB at 5kHz.

7. ULTRA LOW: 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 (of a 5-string bass).

8. BASS: This is the primary low frequency control

which allows for 12dB of cut or boost at 50Hz.

9. MIDRANGE: This is the primary midrange control

which allows for 15dB of cut or boost at the center

frequency selected by the Frequency control (see

#10).

10. FREQUENCY: This control allows you to select

the center frequency for the midrange control, giving

you a choice of five “voices” for the midrange. The

numbers correspond to the following center frequen-

cies: 1=220Hz, 2=450Hz, 3=800Hz, 4=1.6kHz,

5=3kHz.

11. TREBLE: This is the primary high frequency

control which allows for 19dB of cut or 14dB of boost

at 5kHz.

12. MASTER: Set the overall output level of the

amplifier with this control.

13. TUBE GAIN: The tube gain control varies the

high voltage supply to the power amp tubes. This

allows a variety of tonal response characteristics from

the power amp and replaces the limiter found on typ-

ical solid state power amps. At “10” the voltage is at

maximum, providing a dynamic, highly responsive

tone. At “0” the voltage is at minimum, offering a thick-

ened, more compressed tone. This tone can also be

distorted, depending on volume level. In between set-

tings are best for preventing harsh distortion when

driving the power amp to its limits. The effect of this

control increases from moderate to dramatic as the

power amp is driven harder.

NOTE: When adjusting the tube gain control from

“10” to “0” rapidly, a low frequency hum as well as

muting of the output signal occur simultaneously. This

is due to shifting of the DC bias point of the tubes, and

is no cause for concern. Adjusting the control quickly

from “0” to “10” brings a moderate delay due to the

power supply capacitors charging.

14. MUTE: Use this switch to mute all outputs except

the Tuner Out (rear panel #28). The footswitch can

also control muting, if the Mute switch on the front

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

switch is still active with the footswitch connected.

This is excellent for tuning your bass with an electric

tuner without having to adjust any levels to turn down

your sound.)

15. GRAPHIC EQ: This switch, when depressed,

enables the 9-band Graphic EQ (see #17 & #18). A

footswitch overrides this switch.

16. ACTIVE LED: This LED illuminates when the EQ

is on.

17. 9-BAND GRAPHIC EQ: These sliders control

the output frequencies indicated above each control.

The center position of each control is flat (no boost or

cut).

The Graphic EQ can be used in two ways: 1) To fine tune

your sound, make small adjustments at the desired fre-

quencies and leave the EQ on throughout the entire ses-

sion. (This is great for adapting to varying room acoustics

when going from club to club, etc.) 2) For a completely dif-

ferent sound, make larger adjustments and only activate the

EQ when you want a “second channel” sound (such as dur-

ing bass solos).

18. LEVEL:This slider 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 control up; if it’s too loud, slide this control down.

19. ON LED: This LED illuminates when the Power

is ON.

20. POWER: 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.

NOTE: There is a delay during power up until the pro-

tection relay enables the power amplifier output.

1. ENTRADA: Conecte aquí su guitarra de bajos

utilizando un cable blindado para instrumentos.

2. BRILLANTE: Este interruptor, cuando se encuen-

tre ADENTRO, añade a la señal de entrada una

respuesta más viva en la parte alta. Usted puede

experi-mentar el uso de diferentes posi-ciones del

EQ con este interruptor.

3. -15dB: Este interruptor, cuando se encuentre

ADENTRO, atenuará en 15dB la señal de entrada.

Si su bajo tiene circuitos electrónicos activos, usted

tal vez quiera usar este interruptor.

4. DIODO LED DE PICOS: Este LED se iluminará

cuando el nivel de preamplificación esté cerca del

nivel de aplanamiento "clipping", lo que indicaría una

posición de ganancia óptima.

5. GANANCIA: Esto controla la ganancia del pre-

amplificador.

6. ULTRA AGUDOS: Cuando se oprime hacia

ADENTRO, este interruptor realza la cantidad de la

salida de frecuencias altas en 6dB a 5kHz.

7. ULTRA GRAVES: Al oprimirse este interruptor

hacia ADENTRO, se realza en gran forma la canti-

dad de tonos bajos de la parte grave que usted

puede sentir y oír, en especial de las cuerdas de E

bajo y B bajo (en un bajo de 5 cuerdas).

8. BAJOS: Es el control primordial para las frecuen-

cias bajas. Permite 12dB de recorte (totalmente a la

izquierda) ó refuerzo (totalmente a la derecha) a

50Hz. La salida de frecuencias graves queda plana

en la posición central.

9. RANGO MEDIANO: Es el control primordial en el

rango mediano. Permite 15dB de recorte (totalmente

a la izquierda) ó refuerzo (totalmente a la derecha) a

la frecuencia central que se haya seleccionado en el

control de Frecuencias (véase #10). La salida del

rango mediano está plana en la posición central.

10.FRECUENCIA: Le permite seleccionar la fre-

cuencia central para el control del rango mediano, lo

que le da la opción de cinco "voces" para el rango

mediano. Las frecuencias correspondientes son:

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

11. AGUDOS: Es el control primordial para las fre-

cuencias altas. Permite 19dB de recorte (totalmente

a la izquierda) ó 14dB de refuerzo (totalmente a la

derecha) a 5kHz. La salida de frecuencias altas es

1 2 3 4 5 6 7 8

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Ampeg SVT-5 PRO Specifications Page 3

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