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The rear panel, Thunderbass amplifier – Crate Amplifiers BX-2115 User Manual

Page 5

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21. POWER CORD:

Connect the male

end of this cord to a properly grounded
AC power outlet. Use only a grounded
outlet! DO NOT defeat the ground pin
of the cord!

If the amplifier is used out-

side of the United States, see the area’s
Crate dealer for the proper power cord
or consult a local professional electrician.

22. PREAMP OUT:

A pre-amplified

line-level signal may be tapped from this
jack for sending to an external amplifier,
powered monitor, recording console,
mixing board or effects processor. This is
an unbalanced, mono 1/4” jack.

23. POWER AMP IN:

A pre-amplified

line level signal may be sent directly into
the bass amp’s power amp (as when
slaving two amplifiers together, for exam-
ple). Connection to this jack interrupts
the signal from the internal preamp to
the power amp. The Preamp Out (#22)
signal is not interrupted.

24. SPEAKERS:

Use these jacks to con-

nect the amp to your speaker cabinet(s).
Use heavy-duty speaker cables with
mono 1/4” plugs. These jacks are wired
in parallel. Don’t use cabinet combina-
tions resulting in impedance loads below
4 ohms. Use the chart below to help
determine parallel loads. If in doubt, ask
your dealer.

Cab Imp.

# Cabs

Total Imp.

8 ohms

2

4 ohms

16 ohms

2

8 ohms

16 ohms

4

4 ohms

25. BALANCED LINE OUT:

Use this

3-pin XLR jack to send a line level signal
to the house sound board or mixing con-
sole. The level of the signal at this jack is
determined by the setting of the Line
Out Level control on the front panel

(#10). This signal is switchable to be
either pre or post EQ through the front
panel Pre/Post switch(#11).

26. EFFECTS LOOP SEND:

This

unbalanced jack lets you send a signal
out to an external effects processor or
tuner. The signal at this jack is post-EQ,
pre-Master. Connect this to the input
jack of the processor or tuner.

27. EFFECTS LOOP RETURN:

This

jack receives the signal from the output
jack of an external effects processor. Use
shielded cables with mono 1/4” plugs for
connecting the Effects Loop.

MODEL:
SERIAL:
LINE: V ~ Hz
WATTS: MAX

BX-2215

BX2215PHD0312

120 60

550

MADE IN THE U.S.A.

BY SLM ELECTRONICS

1400 FERGUSON AVE.

ST. LOUIS, MO 63133

PREAMP

OUT

EFFECTS

LOOP

BALANCED

LINE OUT

PWR AMP

IN

RETURN

SEND

S
P
E
A
K
E
R
S

150W @ 8 OHMS
220W @ 4 OHMS
MIN. LOAD

CAUTION

R

ISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING:

TO REDUCE THE

RISK OF ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN
OR MOISTURE.

AVIS:

RISQUE DE CHOC

ELECTRIQUE. NE PAS OUVRIR.

The Rear Panel:

5

5

21

22 23

24 25

26

27

BX-220H / BX-2115

BX-220H / BX-2115

ThunderBass Amplifier

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