Ampeg SVT-2 manual Technical Specifications, Troubleshooting

SVT-2 PRO Bass Amplifier

Technical Specifications

OUTPUT POWER RATING	300 Watts RMS minimum continuous @ <3% THD into 2 or 4 ohms, 0.4VRMS input
TOTAL SYSTEM GAIN	76dB, @1kHz w/levels up, tones flat; -3dB @30Hz, 15kHz
TONE CONTROL RANGE
Bass:	±12dB @ 40Hz
Midrange:	+12dB, -15dB @ Frequency selected (220, 450, 800, 1.6k or 3kHz)
Treble:	±12dB @ 4kHz
Ultra Low:	+3dB @ 40Hz, -12dB @ 500Hz
Ultra High:	+8dB @ 8kHz
Bright:	+7dB @ 2kHz
GRAPHIC EQ RANGE	±12dB @ 40Hz, 90Hz, 180Hz, 300Hz, 500Hz, 1kHz, 2kHz, 4kHz, 10kHz
GRAPHIC EQ LEVEL	+8dB, -10dB
SIGNAL TO NOISE RATIO	80dB typical
TUBE COMPLEMENT	12AX7 (5), 12AU7 (3), 6550 (6)
POWER REQUIREMENTS
Domestic:	120VAC, 60Hz, 460VA
Export:	100/115VAC 50/60Hz, 460VA
	230VAC, 50/60Hz, 460VA
SIZE AND WEIGHT	19”W x 3.75”H x 15.75”D; 70 lbs

Ampeg reserves the right to change specifications without notice.

Troubleshooting

In the unlikely event that your SVT-2 PRO should stop working properly (or just stop working), take a few minutes to trou- bleshoot it before you call for service. You can save yourself a lot of time and sometimes money by doing it yourself, and often the cure for the problem is something quite simple. If you think the problem may be worn out tubes, see page 7 for symptoms of tube failure.

If the problem isn’t covered here, or if

Disconnect all external devices except bass and speaker cabinet

No sound, bad sound?

YES

the steps led you to “Service Amp”, then contact your Ampeg dealer for service information. Also, you should refer your amp for servicing if it gets dropped, has liquid spilled into it, or sustains damage to its power cord.

LEDs on?

YES

Power LED green?

YES

Green bias LEDs on?

YES

Inst. volume & amp gain

to max – peak LED flashes?

YES

All controls set properly?

YES

Sound OK?

YES

NO

NO

NO

NO

NO

NO

Check AC outlet, power cord,

power switch, fuses; retry.

Check standby switch (20

second delay); retry.

Re-bias or see page 7 for

possible faults; retry.

Check bass cable; retry.

Set controls; retry.

Bias LEDs flash

with signal?

YES

NO	Possible power
	amp problem.

Go for it!	NO	Check speaker cable; retry.	If these steps fail to solve
			problem, service amp.

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