Ampeg Presets, Programming the B500DR, Troubleshooting, B500DR Programmable Bass Amplifier

B500DR Programmable Bass Amplifier

Presets:

The B500DR has four presets which may be selected by the front panel Presets switches (#11) or by the AFP4D four button footswitch. When the B500DR is powered up, it defaults to Preset 1 - the controls will reset themselves to that Preset and the LEDs will change accordingly to indicate Preset 1’s settings. The LED adjacent to the Preset 1 switch illuminates accordingly. When a footswitch is used, the LED adjacent to the footswitch pushbutton illuminates brighter than the other three LEDs - a feature performing musicians will find very useful when playing in darkened venues.

Programming the B500DR:

To program one of your settings into one of the presets, adjust the front panel controls to the desired setting. Depress and hold the desired Preset switch (1 through 4) until the LEDs adjacent to the Preset switches flash. Your new setting is now stored as a preset. The LEDs will stop flashing after approximately 1-2 seconds. The LED adjacent to the programmed Preset switch will remain illuminated.

When you manually change the position of one of the controls, the LEDs around the affected control flashes to show that the setting has been changed. The LEDs stop flashing when you either program the new setting into a Preset, select a different Preset, or return the control to its original position for the selected Preset.

The front panel Preset switches and the footswitch may be used concurrently. The LEDs on the front panel and on the footswitch indicate which Preset is active regardless of how the Preset was selected (by the front panel switches or by the footswitch).

Troubleshooting

In the unlikely event that your B500DR should malfunction, take a few minutes to troubleshoot it before you call for service. You can save yourself time and money by doing it yourself, and often the problem is something quite simple.

NO SOUND

		LEDs LIGHT				LEDs DON'T LIGHT
	Check amp controls, check						Check AC outlet
	for signal from bass
					OUTLET OK			NO POWER
	NO SOUND		SOUND OK
				Check power cord,				Check house fusebox
Listen for hum				fuse, power switch				or circuit breaker

NO HUM HUM OK

Check speaker			Unplug bass,
			touch tip of cable
	Speaker OK
				NO CHANGE
		SOUND OK
				Replace cable

NO CHANGE

SEE BELOW

		POOR SOUND
Check bass, cables
		POOR SOUND		SOUND OK
	Check speaker(s)
	SPEAKER(S) OK,		SPEAKER(S)
	POOR SOUND		DEFECTIVE

Replace speaker(s)

POOR SOUND SOUND OK

SEE BELOW

If the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg dealer for service informa- tion. Also, you should refer your amp to an authorized service center if it gets dropped, has liquid spilled into it, or sustains damage to its power cord.

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