AMPEG R50 Owner's Manual

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THE FRONT PANEL:

1	2	3	4	5	6	7	8	9

1.Power switch turns the main power on and off. Always turn this switch on first, off last.

Turn the Standby switch (#2) on at least 30 seconds after turning on the Power switch.

2.Standby switch activates the amplifier when ready for play. Always turn this switch off first, on last. Turn the Power switch (#1) on at least 30 seconds before turning on the Standby switch. During short breaks of use, turn the Standby switch off, leaving the Power switch on. This will help prolong the life of the amplifier’s tubes.

IMPORTANT! PLEASE NOTE: Always connect the amplifier to a suitable speaker cabinet and set the Impedance switch (#18) to the proper setting BEFORE turning the amplifier on!

THE REAR PANEL:

BOTH CHANNELS

3.Power light indicates the amplifier is turned on by glowing an iridescent blue color.

4.Channel Select activates the clean channel in the down position and the overdrive channel in the up position. When a footswitch is connected (see #5), this switch is bypassed and has no affect.

5.Footswitch allows “remote control” of the channel selection and reverb on/off. Insert the stereo 1/4” plug of a two-button footswitch (such as Ampeg’s AFP-2) here. The “tip” connection controls channel switching, the “ring” controls the reverb.

6.Line In serves as the “return” jack of an effect loop, when connected to the output jack of a floor pedal or rack-mounted processor. This jack can double as a direct-into-the amplifier signal feed when using the amp as a “slave” or extension amplifier.

16.Main Speaker jack: Use this jack to connect the amplifier to your speaker cabinet. Always use this jack “first” – if using a second cabinet, connect it to the Extension Speaker jack (#17).

17.Ext. Speaker jack: Use this jack to connect the amplifier to a second speaker cabinet – always use the Main Speaker jack (#16) “first.”

18.Impedance switch: Use this switch to match the amplifier to the TOTAL impedance of your speaker cabinet(s). Use the following chart to determine the total impedance (in parallel):

CABINET	NUMBER OF	TOTAL
IMPEDANCE	CABINETS	IMPEDANCE
16 ohms	2	8 ohms

19. AC Line In: Use the supplied power cord to connect the amplifier to a suitable source of A.C. voltage. This is a grounded, three-wire cord and must be connected to a properly grounded outlet.

DO NOT attempt to defeat the ground connection of the power cord! See the serial number label for power ratings.

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