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MODEL
SERIAL #
BV-50
100V - 125V T2.5A SLO-BLO
230V - 250V T1.5A SLO-BLO
AC LINE IN
AVIS:
RISQUE DE CHOC ELECTRIQUE.
NE PAS OUVRIR
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRICAL SHOCK, SO NOT EXPOSE THIS EQUIP-
MENT TO RAIN OR MOISTURE.
CH. SEL./
REVERB
FOOTSWITCH
SEND RETURN
ONE 8 OHM
ENCLOSURE
ONE 4 OHM
ENCLOSURE
TW0 16 OHM
ENCLOSURES
TWO 8 OHM
ENCLOSURES
EFFECTS
LOOP
LINE
OUT
SPEAKER CONNECTIONS
50 WATTS RMS
MADE IN THE
BY SLM ELECTRONICS – 1400 FERGUSON AVE. – ST. LOUIS, MO. 63133
U.S. PATENT # 5,012,199
U.S.A.
115VAC–60Hz
300 WATTS MAX.
CAUTION: TO REDUCE
THE RISK OF FIRE, REPLACE
FUSE WITH SAME TYPE AND
RATING.
ATTENTION: UTILISER
UN FUSIBLE DE RECHARGE
DE MEME TYPE.
16 17 18 19 20 21 22
The Rear Panel:
16. FUSE: This fuse protects the amplifier
against damages caused by overload condi-
tions in the unit. If the fuse blows, replace it only
with the same size and type as indicated on the
rear panel. If the fuse blows continually, the line
voltage may be incorrect, or the amp may need
servicing.
17. AC LINE IN: Firmly plug the female end of
the supplied power cord into this socket, push-
ing it in until it is fully seated. Plug the male end
of the cord into a properly grounded AC outlet of
the correct voltage. DO NOT DEFEAT THE
GROUND PIN OF THE AC PLUG! Use only
the supplied power cord. If the amplifier is to be
used outside of the United States, see your
authorized Crate dealer for information about
alternate line cords and power converters if
needed.
18. CHANNEL SELECT / REVERB FOOT-
SWITCH JACK: Connect a stereo 1/4" plug
(tip/ring/sleeve) here from a two button
footswitch for control of channel switching and
reverb. The tip of the jack is for channel switch-
ing; the ring is for reverb on/off. When a
footswitch is connected here, the front panel
channel select switch is disabled.
19. EFFECTS LOOP SEND: Connection to an
external effects device is made via this jack.
Connect a shielded instrument patch cord from
the send jack to the input jack of the effect. The
send jack also doubles as a "preamp out" jack,
to feed a post-eq signal to a mixing board,
recording console or external amplifier.
20. EFFECTS LOOP RETURN: Connection
from an external effects device is made via this
jack. Connect a shielded instrument patch cord
from the output jack of the effect to the return
jack. The return jack also doubles as a "power
amp in" jack, to feed a line-level signal directly
into the BV-50H's internal power amp. This is
useful when "slaving" two amplifiers together.
21. LINE OUT JACK: This 1/4” jack supplies an
unbalanced output signal from the power amp
for patching into a mixing board, recording con-
sole or external amplifier. The signal is elec-
tronically compensated to simulate the sound
from a "miked" cabinet, and comes directly from
a tap off of the output transformer. This gives
you the tone of your preamp and power amp
tubes!
22. SPEAKER JACKS: Use these unbalanced
1/4" jacks to connect the amplifier to your
speaker cabinet(s) as shown below.
NOTE: You may use any configuration of
impedances shown at the speaker output
jacks. Impedance matching is automatic:
simply connect the cabinet(s) to the jack(s)
labeled with the corresponding imped-
ance(s).
# of CABS JACK JACK
& IMPED(S) LOCATION(S)* LABEL(S)
1 @ 4 ohms #3 4 OHM
1
@ 8 ohms #1 8 OHM
2
@ 8 ohms #3,4 2-8 OHM
2 @ 16 ohms #1,2 2-16 OHM
* Jacks numbered here for purpose of illustration only:
To avoid damaging the amplifier and the
speaker cabinets, don’t use two 4 ohm cabi-
nets, or one 8 ohm and one 4 ohm cabinet at
the same time. Do not connect a single 16
ohm cabinet to the speaker output jacks.
A SPEAKER LOAD MUST BE CONNECTED
TO THE AMPLIFIER TO AVOID DAMAGING
THE UNIT.
ONE 8 OHM
ENCLOSURE
ONE 4 OHM
ENCLOSURE
TW0 16 OHM
ENCLOSURES
TWO 8 OHM
ENCLOSURES
SPEAKER CONNECTIONS
50 WATTS RMS
1234
®
BV-50H Guitar Amplifier