Crate BT100 User Manual

BT100 Bass Amplifier
5
18. POWER: Use this switch to turn the amplifier on and off. The adjacent LED illuminates when the amplifier is
turned on.
19. ELECTRONIC TUNER (top panel, not shown): 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 indica-
tors until the LED between them illuminates, indicating proper tuning.
The Rear Panel:
20. AC LINE CORD (not shown): The grounded power cord should only be plugged into a grounded power out-
let that meets all applicable electrical codes and is compatible with the voltage, power, and frequency require-
ments stated on the rear panel. Do not attempt to defeat the safety ground connection.
21. EXTERNAL SPEAKER: Use this jack to connect the amplifier to an external speaker cabinet. This jack is
wired in series with the internal speaker, which remains active when this jack is used. A 4 ohm external speaker
cabinet is recommended.
22. FOOTSWITCH: Connect a two-button footswitch (such as the Crate CFS-2) here for remote control of the
channel selection/“blend” (see #7) and octave on/off. (When the Channel Switch [#7] is depressed, the footswitch
switches between the Clean channel and the Distortion channel; when the switch is in the out position, the Clean
channel is always active, and the footswitch turns the Distortion channel on and off, allowing you a blend of both
channels.)
23. EFFECTS LOOP SEND: Use this jack to connect an external signal processor to the amplifier by means of a
shielded signal cable. Connect the other end of this cable to the input jack of the external processor.
24. EFFECTS LOOP RETURN: Use this jack to connect an external signal processor to the amplifier by means
of a shielded signal cable. Connect the other end of this cable to the output jack of the external processor.
25. BALANCED LINE OUT: Use this XLR jack to send a balanced line level signal to an external power amplifi-
er, mixing board, or recording console.
26. PRE/POST: Use this switch to determine whether the Balanced Line Out signal is Post-EQ (switch depressed)
or Pre-EQ (switch in the out position).
27. GROUND LIFT: This switch, when depressed, lifts the ground connection at the Balanced Line Out jack (#25).
This may help reduce hum in the Balanced Line Out signal.
28. VOLUME: Use this control to adjust the signal level at the Balanced Line Out jack (#25).
11 12 13 14 1715 16 18
EXTERNAL
SPEAKER
CHANNEL /
OCTAVE
FOOTSWITCH
SEND RETURN
VOLUME
PRE
POST
GND
GND LIFT
EFFECTS LOOP
BALANCED LINE OUT
23 2421 22 25 26 27 28

Crate BT100 Specifications

Power

output power rating	100W RMS
input power requirements	120 VAC, 60Hz, 115VA

Sound Specifications

gain distortion channel	103dB
clean channel	61dB
tone range low	20dB @ 50Hz
lo mid	24dB @ 150Hz
hi mid	18dB @ 1kHz
high	32dB @ 10kHz
signal to noise ratio	65dB below full power

Inputs and Outputs

input impedance	220k ohms
maximum input signal level accepted	15 volts peak-to-peak
balanced line out jack	2 volts peak-to-peak @ full rated power

Speaker Specifications

internal speaker size	15”
magnet	56 oz.
voice coil	2.5”
rms rating	150 watts
impedance	4 ohms

Weight and Dimensions

size	26-1/2” H x 21-1/2” W x 16-1/2” D
weight	69 lbs