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R-50H:
R-50H:
Top Panel:
11. 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 amplifiers 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!
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 chan-
nel selection and reverb on/off. Insert the stereo
1/4 plug of a two-button footswitch (such as
Ampegs AFP-2) here. The tip connection con-
trols 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.
7. Line Out serves as the send jack of an effect
loop, when connected to the input jack of a floor
pedal or rack-mounted processor. This jack can
double as a signal output for connecting directly to
a house sound console, recording console, pow-
ered monitor or external amplifier.
8. Reverb controls the amount of reverberation
applied to both channels. With the control at the 0
position there is no reverb applied; as the control is
turned towards 10 the amount of reverb increas-
es accordingly.
9. Master controls the output volume level of the
overdrive channel. This control works with the Gain
control (14) to produce sounds from slightly dis-
torted to screaming and everything in between.
10. Bass adjusts the output level of the low fre-
quencies for both channels. This control offers a
cut or boost of 24dB at 40Hz for both channels.
11. Mid adjusts the output level of the middle fre-
quencies for both channels. This control offers a
cut or boost of 8dB at 700Hz for both channels.
12. Treble adjusts the output level of the high fre-
quency range for both channels. This control offers
a cut or boost of 24dB at 5kHz for the clean chan-
nel, 24dB at 2kHz for the overdrive channel.
13. Volume controls the output level of the clean
channel.
14. Gain sets the amount of overdrive distortion for
the overdrive channel. This control works along
with the Master control (9).
15. Each Input accepts a standard 1/4 instrument
plug from your electric guitar. The right input is at
0dB level while the left input is padded 6dB to com-
pensate for higher output sources.
Rear Panel (not shown):
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).
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 connec-
tion of the power cord! See the serial number
label for power ratings.
20,21. Power Tubes: EL34 (2)
22-24. Preamp Tubes: 12AX7A (3)
Technical Specifications:
OUTPUT POWER RATING
50 watts RMS @ 10% THD 8 ohm load 120 VAC
SIGNAL TO NOISE RATIO
65dB typical
POWER REQUIREMENTS
120VAC, 60Hz, 115VA; 100VAC, 50/60Hz, 115VA; 230VAC, 50/60Hz, 115VA
GAIN
60dB Clean channel, 95dB Overdrive channel
TREBLE
24dB Range @ 5kHz Clean channel, 24dB Range @ 2kHz Overdrive channel
MID
8dB Range @ 700Hz
BASS
24dB Range @ 40Hz
SIZE AND WEIGHT:
29.75 W x 11.25 H x 9.5 D, 34 lbs.