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BT25/BT50
Bass Amplifier
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13. CD INPUT: Use these RCA jacks to connect the line level (or headphones) output of a CD player, tape
deck or rhythm machine to the amplifier. The signal level from these jacks is adjusted by the Master control
(#12). If the signal from the source connected to these jacks is too strong, use the output level control on the
source to adjust the signal to obtain the proper level for a good mix.
14. HEADPHONES: Use this jack to listen to the amplifier through a pair of stereo headphones. The internal
speaker is disconnected when the headphones jack is used.
CAUTION: To avoid possible damage to your hearing, do not use head-
phones for extended periods of time at extremely loud listening levels.
15. POWER: Use this switch to turn the amplifier on and off. The adjacent LED illuminates when the amplifi-
er is turned on.
16. ELECTRONIC TUNER (top panel): This active
electronic tuner is on whenever the amplifier is turned
on, allowing you constant, “real-time” tuning. The tuner
is fully chromatic – use the flat and sharp indicators
until the LED between them illuminates, indicating
proper tuning.
The Rear Panel (not shown):
17. AC LINE CORD: The grounded power cord should only be plugged into a grounded power outlet that
meets all applicable electrical codes and is compatible with the voltage, power, and frequency requirements
stated on the rear panel. Do not attempt to defeat the safety ground connection.
18. FOOTSWITCH: Connect a two-button footswitch (such as the Crate CFP-2) here for remote control of the
channel selection/“blend” (see #5) and octave on/off. (When the Channel Switch [#5] is depressed, the
footswitch switches between the Clean channel and the Distortion channel; when the switch is in the out posi-
tion, the Clean channel is always active, and the footswitch turns the Distortion channel on and off, allowing
you a blend of both channels.)
19. EXTERNAL SPEAKER: Use this jack to connect the amplifier to an external speaker cabinet (BT25 = 4
ohms minimum, BT50 = 8 ohms minimum). The internal speaker is disconnected when the external speaker
jack is used.
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