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BV-120HR RED VOODOO All Tube Guitar Amplifier
Introduction:
The BV-120HR is an all-tube, feature-packed professional stage performers' amplifier. Rugged construc-
tion, reliable American craftsmanship and two powerful channels of pure tube power are some of the trade-
marks of this impressive amplifier. This amplifier features two distinctly different 12AX7 tube-driven channels:
one with classic tube rhythm sounds and one offering you some of the finest lead and overdrive sounds of
any production amplifier.
Each channel features an all-tube preamp section with separate reverb level controls and three bands of
equalization for total tone control. The master Presence control lets you custom tailor the sound to suit your
particular needs. The effects loop can be quickly bypassed via the front panel switch or with the supplied
footswitch, and features a switchable “pad” for optimum compatibility with either floor pedals or rack-mount-
ed effects.
The Line Out signal is tapped directly from the speaker outputs, then attenuated and frequency-compen-
sated to replicate the sound of a miked speaker cabinet. Dual speaker jacks and an impedance selector
switch allow the use of multiple cabinets totalling 8 or 16 ohms. The BV-120HR delivers a solid 100 watts of
output power.
Features:
Here's a quick overview of the BV-120HR's features and controls. Additional information can be
found on the pages indicated.
• All-Tube Preamp and Power Amp: Classic tube sounds with Crate’s legendary performance and
reliability
• Two Completely Separate Channels: Independent level, tone and reverb controls (page 4)
• Enhanced Tone Controls (Ch. 2): Designed to Sammy Hagar’s specs, to get those “Red Rocker”
sounds
• Presence Control: Provides greater tone control and flexibility by allowing you to vary the upper
harmonics of your guitar (page 4)
• Footswitch Control: Remote channel selection and Effects Loop On/Off are available by using
the supplied footswitch (page 5)
• Switchable Effects Loop with Pad: Footswitch or front panel button controlled, the external
effects loop can be switched in or out with ease. A switchable pad provides optimum performance
from line-level rack mounted effects as well as floor-dwelling foot pedals (pages 4,5)
• Impedance Selector Switch: Proper impedance matching is essential for optimum performance
and life expectancy of a tube amplifier. These amps allow the use of 8 or 16 ohm speaker config-
urations (page 5)
• Line Out Jack: Taken directly from the speaker jacks, the Line Out signal is frequency compen-
sated to sound like a “miked” speaker cabinet. Use this jack to connect to the house mixing board,
a recording console or another performer’s powered monitor (page 5)
• DC Filament Supply: The first preamp tube has a DC filament supply for reduced hum
• Special “Red Rocker” Cosmetics: The unique cosmetics of the BV120HR serve as a tribute to
your good taste in musical equipment
• Musician Made in the U.S.A.
3
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BV-120HR RED VOODOO All Tube Guitar Amplifier
REVERB
5
CHANNEL 2
O
CHANNEL 1
O
CHANNEL
SELECT
EFFECTS LOOP
PAD (12dB)
5
5
5
O
O
5
O
O
5
4
6
4
6
4
6
4
6
4
6
4
6
3
7
3
7
3
1
7
3
7
3
7
3
7
2
8
2
8 2
8
2
8
2
8
2
8
ON
OFF
2
1
1
9
1
9
9
1
9
1
9
1
9
O
1O
O
1O
O
1O
O
1O
-5
+5
-5
+5
-5
+5
O
1O
-5
+5
-5
+5
-5
+5
O
1O
EFFECTS LOOP
POWER
STANDBY
PRESENCE
LEVEL
2
LEVEL
1
VOLUME
LOW
MID
HIGH
GAIN
LOW
MID
HIGH
VOLUME
INPUT
1
2
3
4 5
6
7
8
9
10
11
12
13
14
15
16
17
18
The Front Panel:
1. POWER: This switch applies AC voltage
to the amplifier. It is very important that this
switch be turned on for at least 20 seconds
prior to turning on the STANDBY switch.
The switch is illuminated when the AC
power is on.
6,7. REVERB: LEVEL 2, LEVEL 1: Adjust 13. CHANNEL SELECT: Switch between
the amount of reverberation on each chan- channels with this push-button switch. The
nel with these controls: at the "0" position adjacent amber LED glows when channel
the signal is "dry" (no reverb). As you bring 1 is selected (switch "out"), the red LED
the control up, the amount of reverb glows when channel 2 is selected (switch
increases.
"in"). When a footswitch is used for channel
switching, this switch is disabled.
2. STANDBY: This switch activates the
amplifier and should only be turned on after
the POWER switch has been on for a min-
imum of 20 seconds. This switch is illumi-
nated when the high voltage is being sup-
plied to the unit.
Channel 2:
Channel 1:
8. VOLUME: Set the output signal level of
channel 2 with this control. At the "0" posi- 14. LOW: Adjust the bottom end response
tion (full left) very little or no signal will be with this control. The low control covers a
heard; as you bring the control up (towards range of 16dB at 100Hz. This sets the
center) the output level of channel 2 amount of bass heard (and felt) from the
increases. Use this control along with your amp.
NOTE: Do not turn the STANDBY
switch on until the POWER switch
has been on for a minimum of 20 sec-
onds. This allows the tubes to prop-
erly warm up prior ro the application
of high voltage.
guitar's volume and the channel 2 gain
control (#12) to produce a wide variety of
sounds.
15. MID: Adjust the midrange response
with this control. The mid control covers a
range of 20dB at 300Hz. This controls the
9. LOW: Adjust the bottom end response “voice” of your guitar.
3. PRESENCE: Increase the level of upper
harmonics with this control. The presence
control allows a boost of up to 5dB at
10kHz.
with this control. The low control covers a
range of 16dB at 100Hz. This sets the
16. HIGH: Adjust the high end response
with this control. The high control covers a
amount of bass heard (and felt) from the
range of 10dB at 10kHz. This controls the
amp.
“bite” of your guitar.
4. EFFECTS LOOP PAD: This switch acti-
vates a 12dB pad on the effects send sig-
nal and corresponding gain recovery on
the return. In the “out” position the signal is
full strength which is best suited for line
level rack mountable effects. With the
switch “in” the signal is lower which is best
suited for foot pedal type effects.
10. MID: Adjust the midrange response
17. VOLUME: Set the output volume level
with this control. The mid control covers a
of channel 1 with this control.
range of 11dB at 650Hz. This controls the
18. INPUT: Connect your guitar or wireless
receiver into this standard 1/4" jack using a
shielded instrument cable.
“voice” of your guitar.
11. HIGH: Adjust the high end response
with this control. The high control covers a
range of 16dB at 10kHz. This controls the
“bite” of your guitar.
5. EFFECTS LOOP SWITCH: This switch
controls the effects return signal of the
effects loop. The loop is only active when
the switch is pressed in. When a footswitch
is used, this switch is disabled. The adja-
cent yellow LED glows when the loop is in
use.
12. GAIN: Adjust the overdrive (distortion)
level with this control. With the control
towards “0” (to the left) the signal is rela-
tively clean. As you bring the control
towards “5” (center position) the distortion
increases, along with the overall output
level. Keep turning the control towards “10”
and you’ll increase the distortion even
more.
4
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BV-120HR RED VOODOO All Tube Guitar Amplifier
125VAC, 50/60Hz
250VAC, 50/60Hz
T5A SLO-BLO
T2.5A SLO-BLO
SPEAKERS
100 WATTS RMS
EFFECTS
LOOP
IMPEDANCE
SELECTOR
CAUTION
FOOTSWITCH
RISK OF ELECTRIC SHOCK
DO NOT OPEN
DE CHOC ELECTRIQUE.
AVIS:RISQUE
NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRICAL SHOCK, SO NOT EXPOSE THIS EQUIP-
MENT TO RAIN OR MOISTURE.
8
16
MAIN
EXT.
LINE OUT
RETURN
SEND
S
(USE FIRST)
T
R
S
T
R
M a d e i n t h e U . S . A . b y
1 4 0 0 F e r g u s o n A v e .
•
S L M E L E C T R O N I C S
TIP
=
CHANNEL SELECT
EFFECTS LOOP
SLEEVE GROUND
AC LINE IN
•
S t . L o u i s , M O . 6 3 1 3 3
RING
=
=
19
20
21
22
23
24
25
26
27
The Rear Panel:
19. IMPEDANCE SELECTOR: For the
best performance and least strain on your
amplifier, you MUST properly match the
impedance of your amplifier to that of your
speaker cabinet(s). Set the selector switch
to the 8 or 16 ohm position, depending on
the total impedance of your speaker cabi-
net(s). The chart below can help you deter-
mine that impedance based on the follow-
ing combinations of speakers connected in
parallel.
22. LINE OUT JACK: This 1/4” jack sup- 25. FOOTSWITCH JACK: Connect
a
plies a line-level output signal from the stereo 1/4” (tip/ring/sleeve) here from a
power amp for patching into a mixing two-button footswitch (such as the Crate
board, recording console or external ampli- CFP-2) for remote control of channel
fier. The signal is tapped directly from the switching and the effects loop. The tip of
speaker outputs, then attenuated and elec- the jack is for the channel switching; the
tronically compensated to simulate the ring is for the effects loop. When a
sound of a “miked” cabinet.
23. EFFECTS LOOP
Connection from an external effects device
footswitch is connected here, the front
panel channel select and effects loop
switches are disabled.
RETURN:
is made via this jack. Connect a shielded 26. AC LINE IN: Firmly plug the female end
instrument patch cord from the output jack of the supplied power cord into this socket,
of the effect to the return jack. This jack is pushing it in until it is fully seated. Plug the
active only when the effects loop is male end of the cord into a properly
switched in. The return jack also doubles grounded AC outlet of the correct voltage.
as a "power amp in" jack, to feed a line- DO NOT DEFEAT THE GROUND PIN OF
level signal directly into the BV-60H/120H's THE AC PLUG! Use only the supplied
internal power amp. This is useful when power cord. If the amplifier is to be used
CAB. IMP.
8 OHMS
16 OHMS
16 OHMS
32 OHMS
32 OHMS
# OF CABS.
TOTAL IMP.
8 OHMS
16 OHMS
8 OHMS
16 OHMS
8 OHMS
1
1
2
2
4
20. MAIN SPEAKER JACK: Use this jack
to connect the amplifier to your primary
speaker cabinet. Always keep the imped-
ance at 8 or 16 ohms, with the impedance
selector switch (#19) at the proper setting.
"slaving" two amplifiers together.
outside of the United States, see your
authorized Crate dealer for information
about alternate line cords and power con-
verters if needed.
24. 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 27. FUSE: This fuse protects the amplifier
the effect. This jack is always active. The against damages caused by overload con-
send jack also doubles as a "preamp out" ditions in the unit. If the fuse blows, replace
jack, to feed a post-eq, pre-amplified signal it only with the same size and type as indi-
to a mixing board, recording console or cated on the rear panel. If the fuse blows
NOTE: Use the MAIN SPEAKER jack
first. Then, if an extension speaker is
desired, connect it to the EXT.
SPEAKER jack.
external amplifier.
continually, the line voltage may be incor-
rect, or the amp may need servicing.
21. EXT. SPEAKER JACK: Use this jack to
connect the amplifier to a secondary
speaker cabinet, after a speaker has been
connected to the main speaker jack (#20).
5
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BV-120HR RED VOODOO All Tube Guitar Amplifier
Some Suggested Settings:
SAMMY'S SOUNDS:
CHANNEL 2
REVERB
5
CHANNEL 1
O
CHANNEL
SELECT
EFFECTS LOOP
PAD (12dB)
5
5
5
O
O
O
5
O
O
5
4
6
4
6
4
6
4
6
4
6
4
6
3
7
3
7
3
1
7
3
7
3
7
3
7
2
8
2
8 2
8
2
8
2
8
2
8
ON
OFF
2
1
1
9
1
9
9
1
9
1
9
1
9
O
1O
O
1O
O
1O
O
1O
-5
+5
-5
+5
-5
+5
O
1O
-5
+5
-5
+5
-5
+5
O
1O
EFFECTS LOOP
PRESENCE
LEVEL
2
LEVEL
1
VOLUME
LOW
MID
HIGH
GAIN
LOW
MID
HIGH
VOLUME
(AS NEEDED)
(AS NEEDED)
CRUNCHY EDGE:
CHANNEL 2
SPARKLING CLEAN:
CHANNEL 1
REVERB
5
CHANNEL
SELECT
EFFECTS LOOP
PAD (12dB)
5
5
5
O
O
O
5
O
O
O
5
4
6
4
6
4
6
4
6
4
6
4
6
3
7
3
7
3
1
7
3
7
3
7
3
7
2
8
2
8 2
8
2
8
2
8
2
8
ON
OFF
2
1
1
9
1
9
9
1
9
1
9
1
9
O
1O
O
1O
O
1O
O
1O
-5
+5
-5
+5
-5
+5
O
1O
-5
+5
-5
+5
-5
+5
O
1O
EFFECTS LOOP
PRESENCE
LEVEL
2
LEVEL
1
VOLUME
LOW
MID
HIGH
GAIN
LOW
MID
HIGH
VOLUME
(AS NEEDED)
(AS NEEDED)
ROCK RHYTHM:
CHANNEL 2
FAT CLEAN:
CHANNEL 1
REVERB
5
CHANNEL
SELECT
EFFECTS LOOP
PAD (12dB)
5
5
5
O
O
O
5
O
O
O
5
4
6
4
6
4
6
4
6
4
6
4
6
3
7
3
7
3
1
7
3
7
3
7
3
7
2
8
2
8 2
8
2
8
2
8
2
8
ON
OFF
2
1
1
9
1
9
9
1
9
1
9
1
9
O
1O
O
1O
O
1O
O
1O
-5
+5
-5
+5
-5
+5
O
1O
-5
+5
-5
+5
-5
+5
O
1O
EFFECTS LOOP
PRESENCE
LEVEL
2
LEVEL
1
VOLUME
LOW
MID
HIGH
GAIN
LOW
MID
HIGH
VOLUME
(AS NEEDED)
(AS NEEDED)
MASSIVE METAL:
CHANNEL 2
REVERB
5
CHANNEL 1
O
CHANNEL
SELECT
EFFECTS LOOP
PAD (12dB)
5
5
5
O
O
O
5
O
O
5
4
6
4
6
4
6
4
6
4
6
4
6
3
7
3
7
3
1
7
3
7
3
7
3
7
2
8
2
8 2
8
2
8
2
8
2
8
ON
OFF
2
1
1
9
1
9
9
1
9
1
9
1
9
O
1O
O
1O
O
1O
O
1O
-5
+5
-5
+5
-5
+5
O
1O
-5
+5
-5
+5
-5
+5
O
1O
EFFECTS LOOP
PRESENCE
LEVEL
2
LEVEL
1
VOLUME
LOW
MID
HIGH
GAIN
LOW
MID
HIGH
VOLUME
(AS NEEDED)
6
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BV-120HR RED VOODOO All Tube Guitar Amplifier
A Word About Tubes:
To increase the life of the tubes, allow your amp to cool down before moving it. After about a year (or soon-
er if you're on tour or jammin' more frequently than most) you may notice the output of your amp just isn't as
"alive" as it used to be. If the sound from your amplifier starts to grow weak, lacks punch, fades up and down,
loses highs and lows, gets "funny" (clanking sounds, etc.), it's possible that the power tubes are wearing down
and may need replacing. Since power tubes work together in an amplifier, it is important that they all be
replaced at the same time with a matched set.
If the amp starts to squeal, gets noisy, loses gain or starts to hum, the preamp tubes may be bad. Insist
upon using only the highest quality, low-microphonic tubes!
NOTE: Tube replacement should always be done by a qualified service technician, since adjustment
of the internal biasing controls will be necessary after the new tubes are installed. Also, removal of the
tubes may expose extremely hazardous voltage levels, which could cause injury or death.
To help prolong the life of your tube amplifier, and to keep it in top performing condition, please observe
the following guidelines:
•Always match the impedance of your speaker cabinet(s) to the amplifier’s impedance selector switch
setting.
•In cold weather, allow the amplifier to warm up to room temperature before turning it on.
•After using the amplifier, allow it to cool down before moving it.
•Protect the amplifier from exposure to dust and moisture. If liquid gets spilled into the amplifier, or if it
gets dropped or excessively jarred, have it checked out at a service center before using it.
System Block Diagram:
CH.1
TUBE
STAGE
INPUT
CHANNEL
SWITCHING
LOW MID HIGH VOLUME
TUBE
STAGE
CH.2
TUBE
STAGE
TUBE
STAGE
TUBE
STAGE
TUBE
STAGE
GAIN
LOW MID HIGH VOLUME
PAD
SWITCHING
MAIN
SPKR
OUT
SEND
RETURN
POWER
AMP
REVERB
LEVEL 1
IMPEDANCE
SELECTOR
EFFECTS
SWITCHING
EXT.
SPKR
OUT
EFFECTS
LOOP
PRESENCE
REVERB
LEVEL 2
LINE
OUT
FREQUENCY
COMPENSATOR
7
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BV-120HR RED VOODOO All Tube Guitar Amplifier
Technical Specifications:
Output Power Rating
Gain
100 watts RMS @ 5% THD 8 or 16 ohm load, 120 VAC
Channel 1
Channel 2
66dB, tones at “10” @ 1kHz
96dB, tones @ “10” @ 1kHz
Tone Control Range
Channel 1
Low
Mid
High
16dB @ 100Hz
20dB @ 300Hz
10dB @ 10kHz
Channel 2
Presence
Low
Mid
High
16dB @ 100Hz
11dB @ 650Hz
16dB @ 10kHz
5dB @ 10kHz
Input Impedance
1M ohm
Maximum Signal Accepted
Tube Types
2.8V peak to peak
Preamp
12AX7A (3)
Power Amp
12AX7A (1), 6L6GT/5881 (4)
Line Out Level
1.2V RMS nominal
Power Requirements
120VAC, 60Hz, 180VA
100/115VAC, 50/60Hz, 180VA
230VAC, 50/60Hz, 180VA
Size and Weight
12”H x 30.25”W x 10”D, 50lbs.
Crate continually develops new products, as well as improves existing ones. For this reason, the specifications and information in this manual are subject to change without notice.
The BV-120HR is covered with high-quality, durable red Tolex®. To keep the cabinet looking its best, avoid
abrasive cleansers. Wipe the cabinet clean using a slightly dampened soft cloth. Do not spray cleaners directly
into the amplifier. Never use harsh cleaners on the hardware since they could damage their protective coatings.
©1999 SLM ELECTRONICS
A division of St. Louis Music
1400 Ferguson Avenue
St. Louis, Mo 63133
P/N 47-631-05 • 06/99
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