Crate Amplifiers BV-60 Musical Instrument Amplifier User Manual

Owner’s Manual for the
BV-60/BV-6212
All Tube Professional Series
Guitar Amplifiers
BV-60
BV-6212
®
by
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
Congratulations!
Your love of performing and driving ambition to be the best have brought you to a turning point in your musical
career: the incredible BV-60 or BV-6212 Professional Series guitar amplifier. An all-tube powerhouse of an amplifier designed to take you to the top and keep you there.
We know something about you: we know you were never impressed with those "toys" that some of your friends
called amplifiers. We know you were holding out until someone offered you an American-made, affordable piece
of professional equipment you could really sink your teeth into. A serious amplifier, designed for a serious musician: an amp with the sounds you've always looked for, the power you've always dreamed about, and the reliability you know you'll need. And all with a name you know you can trust: CRATE.
Like all Crate products, your BV-60/6212 is made with pride in America, using only the best components.
Extensive testing at the hands and ears of skilled technicians and musicians insures you that this amplifier is the
absolute best it can be.
In order to get the most out of your new amplifier, we strongly urge you to go over the information contained in
this manual before you begin playing.
®
And thank you for choosing
Contents:
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . .6
A Word About Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Adjusting the Hum Balance . . . . . . . . . . . . . . . . . . . . . . . .7
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Technical Specifications . . . . . . . . . . . . . . . . . . .back cover
CAUTION
ATTENTION
VORSICHT
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
ELEKTRISCHE SCHLAGGEFAHR
NICHT OFFENEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE
PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER A UN
TECHNICIEN QUALIFIE.
VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT
DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM
BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM
WARTUNGSPERSONAL ZU UBERLASSEN.
THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE
OF THE UNIT AND PREVENT ACCIDENTAL DAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARY GUIDELINES:
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN CHASSIS; DO NOT DEFEAT OR REMOVE THE GROUND PIN OF THE
POWER CORD; CONNECT ONLY TO A PROPERLY GROUNDED AC POWER OUTLET.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
CAUTION: NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION: THIS UNIT IS CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND PRESSURE
LEVELS CAN CAUSE PERMANENT HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED, AND EAR PROTECTION RECOMMENDED IF
UNIT IS OPERATED AT HIGH VOLUME. THE CHART BELOW SHOWS THE U.S. GOVERNMENT’S OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) REGULATIONS WHICH WERE IN EFFECT AT THE TIME OF THIS PUBLICATION FOR PERMISSIBLE NOISE EXPOSURE, PER
29CFR1910.95, TABLE G-16:
SOUND LEVEL DBA, DURATION PER DAY
SLOW RESPONSE
IN HOURS
90
8
92
6
95
4
97
3
100
2
SOUND LEVEL DBA,
SLOW RESPONSE
102
105
110
115
DURATION PER DAY
IN HOURS
1 - 1 1/2
1
1/2
1/4 or less
ACCORDING TO OSHA, ANY EXPOSURE IN EXCESS TO THESE AMOUNTS LISTED ABOVE COULD RESULT IN SOME HEARING LOSS.
EXPLANATION OF
GRAPHICAL SYMBOLS:
2
"DANGEROUS VOLTAGE"
= "DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
= "REFERREZ-VOUS AU MANUAL D'UTILISATION"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
Introduction:
The BV-60/6212 are all-tube, feature-packed professional stage performers' amplifiers. Rugged construction, reliable American craftsmanship and two powerful channels of pure tube power are some of the
trademarks of these new and impressive pieces of musician's equipment. Both amplifiers feature 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 stock 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 of your guitar to suit your particular needs.
The Line Out signal is tapped directly from the speaker outputs, then attenuated and frequency-compensated to replicate the sound of a miked speaker cabinet. Two pairs of speaker output jacks provide easy and
automatic impedance matching with a wide variety of cabinet configurations. The BV-60 and BV-6212 boast
a solid 60 watts of musical output power.
Features:
Here's a quick overview of the BV-60/6212's features and controls. Additional information can
be found on the pages indicated.
• Patented Channel Switching Circuitry: Achieves maximum use of each preamp tube – so unique
it’s patented!
• Boost Control: Like adding a third channel to your amp. This push-button switch gives a big boost
to the midrange frequencies and the overall gain of the overdrive channel (footswitchable) (page 4).
•Adjustable Presence Control: Fully adjustable upper harmonics level for changing the “presence”
of both channels (page 4).
•Auto-Biasing Circuitry: Want to change your sound? Change your tubes! Internal circuitry allows
the use of either 6L6 or EL34 power tubes with no bias adjusting (page 7).
•DC Filament Supply: The first preamp tube has a DC filament supply for reduced hum.
•Effects Loop: For noiseless patching of external effects, or use as a preamp out/power amp in connection (page 5).
•Balanced Out Jack: Taken directly from the speaker output signal, this electronically balanced and
frequency compensated output lets you patch into house sound boards, recording consoles, etc.,
with ultimate sonic fidelity (page 5).
• Footswitch Jacks: Two separate jacks – one for channel selection and boost control and one for
reverb on/off control – allow use of a two or three-button footswitch for total control (page 5).
• Speaker Jacks: Impedance-matched speaker connectors for up to four different cabinet configurations (page 5).
• High Cosmetic Appeal and Stage Presence: The unique cosmetics of the BV-60/6212 serve as
a tribute to your good taste in musical equipment.
• Musician Made in the U.S.A.
3
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
Channel 1
Reverb
Channel 2
BRIGHT
CHANNEL
INPUT
VOLUME
LOW
MID
HIGH
1
2
3
4 5 6
BOOST
GAIN
7
LOW
MID
HIGH
MASTER
REVERB
PRESENCE
8 9 10
11
12
13
14
15
The Front Panel:
Channel 2:
1. INPUT: Connect your guitar or wireless
receiver into this standard 1/4" jack using a
shielded instrument cable.
8. GAIN: Adjust the overdrive (distortion) level
with this control. With the control towards “0” (to
the left) the signal is relatively 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.
Channel 1:
2. VOLUME: Set the output volume level of
channel 1 with this control.
3. LOW: Adjust the bottom end response with
this control. The low control covers a range of
16dB at 100Hz.
4. MID: Adjust the midrange response with this
control. The mid control covers a range of 23dB
at 300Hz.
5. BRIGHT: Add a biting edge to your sound by
pressing this push-button switch in. The bright
switch adds 5dB at 5kHz.
6. HIGH: Adjust the high end response with this
control. The high control covers a range of
25dB at 10kHz.
7. CHANNEL: Switch between channels with
this push-button switch. The adjacent amber
LED glows when channel 1 is selected (switch
"out"), the red LED glows when channel 2 is
selected (switch "in"). When a footswitch is
used for channel switching, this switch is disabled.
4
9. BOOST: Add a third channel (sort-of) by
pressing this push-button switch in. The boost
switch adds 13dB at 1kHz.
10. LOW: Adjust the bottom end response with
this control. The low control covers a range of
8dB at 100Hz.
11. MID: Adjust the midrange response with this
control. The mid control covers a range of 7dB
at 700Hz.
12. HIGH: Adjust the high end response with
this control. The high control covers a range of
10dB at 10kHz.
13. MASTER: Set the output signal level of
channel 2 with this control. At the "0" position
(full left) very little or no signal will be heard; as
you bring the control up (towards center) the output level of channel 2 increases. Use this control
along with your guitar's volume and the Gain
control (#8) to produce a wide variety of sounds.
STANDBY POWER
16
17
14. REVERB: Adjust the amount of reverberation with this control: at the "0" position the signal is "dry" (no reverb). As you bring the control
up, the amount of reverb increases.
15. PRESENCE: Increase the level of upper
harmonics with this control. The presence control allows a boost of up to 5dB at 10kHz.
16. STANDBY: This switch activates the amplifier, and should always be turned on last. The
switch lights up when the high voltage power is
passing through to the tubes.
NOTE: When you first power up this amplifier, leave the Standby switch OFF for at least
20 seconds. This gives the power tubes a
chance to prepare themselves for action.
17. POWER: This switch applies AC voltage to
the amplifier, and should always be turned on
first. The switch lights up when the AC power is
on.
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
CAUTION
MADE IN THE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISQUE DE CHOC ELECTRIQUE.
AVIS: NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF FIRE OR
U.S.A.
TW0 16 OHM
ENCLOSURES
BY SLM ELECTRONICS – 1400 FERGUSON AVE. – ST. LOUIS, MO. 63133
U.S. PATENT # 5,012,199
TWO 8 OHM
ENCLOSURES
ELECTRICAL SHOCK, SO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
CAUT I O N:
AC LINE IN
TO REDUCE THE
R I S K O F F I R E, R E PL AC E
F U S E W I T H SA M E T Y PE A N D
R AT I N G .
MODEL
CH. SEL
AT T E NT I O N:
100V - 125V
230V - 250V
U T I L I SE R U N
F U SI BL E D E R EC H A R G E D E
M E M E T Y PE .
T2.5A SLO-BLO
T1.5A SLO-BLO
18
19
REVERB
FOOT
SWITCH
20
21
SEND
RETURN
EFFECTS
LOOP
22
BV-60
SERIAL #
115VAC–60Hz
360 WATTS MAX.
23
ONE 8 OHM
ENCLOSURE
ONE 4 OHM
ENCLOSURE
BAL.
OUT
SPEAKER CONNECTIONS
60 WATTS RMS
24
25
The Rear Panel:
18. FUSE: This fuse protects the amplifier
against damages caused by overload conditions 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.
19. AC LINE IN: Firmly plug the female end of
the supplied power cord into this socket, pushing 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.
20. CHANNEL SELECT FOOTSWITCH JACK:
Connect a stereo 1/4”plug (tip/ring/sleeve) here
from either a two or three button footswitch
(such as the Crate CFP-2 or CFP-3) for control
of channel switching. The tip of the jack is for
the channel switching; the ring is for boost control. When a footswitch is connected here, the
front panel channel select and boost switches
are disabled.
21. REVERB FOOTSWITCH JACK: Connect a
mono 1/4”plug (tip/sleeve) here from either a
one or three button footswitch for reverb on/off
control.
22. 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.
23. 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-60/62's internal power amp. This is
useful when "slaving" two amplifiers together.
24. BALANCED OUT JACK: This XLR connector supplies a balanced output signal from the
power amp for patching into a mixing board,
recording console or external amplifier. The signal is electronically compensated to simulate
the sound of a “miked” cabinet.
25. 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 impedance(s).
# of CABS
& IMPED(S)
1 @ 4 ohms
1 @ 8 ohms
2 @ 8 ohms
2 @ 16 ohms
JACK
LOCATION(S)*
#3
#1
#3,4
#1,2
JACK
LABEL(S)
4 OHM
8 OHM
2-8 OHM
2-16 OHM
* Jacks numbered here for purpose of illustration only:
TW0 16 OHM
ENCLOSURES
1
ONE 8 OHM
ENCLOSURE
TWO 8 OHM
ENCLOSURES
2
3
4
ONE 4 OHM
ENCLOSURE
SPEAKER CONNECTIONS
To avoid damaging the amplifier and the
speaker cabinets, don’t use two 4 ohm cabinets, 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.
5
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
Some Suggested Settings:
SPARKLING CLEAN:
Channel 1
BRIGHT
VOLUME
LOW
Reverb
Channel 2
MID
CHANNEL
HIGH
IN
BOOST
GAIN
LOW
MID
HIGH
MASTER
REVERB
PRESENCE
OUT
BLUESY:
Channel 1
BRIGHT
VOLUME
LOW
Reverb
Channel 2
MID
CHANNEL
HIGH
BOOST
GAIN
IN
LOW
MID
HIGH
MASTER
REVERB
PRESENCE
OUT
METAL:
Channel 1
BRIGHT
VOLUME
LOW
Reverb
Channel 2
MID
CHANNEL
HIGH
BOOST
GAIN
IN
LOW
MID
HIGH
MASTER
REVERB
PRESENCE
IN
SINGING:
Channel 1
BRIGHT
VOLUME
LOW
MID
CHANNEL
HIGH
BOOST
GAIN
IN
6
Reverb
Channel 2
LOW
IN
MID
HIGH
MASTER
REVERB
PRESENCE
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
A Word About Tubes:
Vacuum tubes can only last so long. Allowing your amp to cool down before moving it will help prolong the life of
the tubes. Even so, after about a year (or sooner 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 very likely that the
power tubes are worn out and 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 of tubes.
If you're looking to change the sound of your amp, you can replace the stock 6L6 power tubes with EL34's. 6L6
tubes tend to give you more of the "American" sound, with lots of solid power, even up to their full output, with a lot of
dynamic headroom. EL34 tubes tend to give you that "English/British" sound: they distort sooner and provide a more
controllable and less penetrating distortion effect when overdriven. Either way, your BV-60/6212 has been engineered
to facilitate power tube replacement, with automatic biasing when changing tube types. IF YOU DON'T CONSIDER
YOURSELF ADEPT WITH A SCREWDRIVER, REFER POWER TUBE REPLACEMENT TO A QUALIFIED SERVICE CENTER. Otherwise, unplug your amp, allow it to cool for at least thirty minutes, and proceed as follows:
• Turn the amp so you're looking at its rear panel.
• Unscrew and remove the wooden rear cover.
• Remove the power tubes one at a time by slightly spreading the wire tube clamps with one hand and gently
pulling the tube out of the socket with the other hand.
• When inserting new power tubes, carefully align the tab in the tube's plastic base with the slot in the socket
and press the tube gently but firmly into place.
• Replace the rear cover piece and tighten the screws. (Avoid over tightening.)
• Power up the amplifier and let it sit for at least twenty minutes before playing.
If the amp starts to squeal, gets noisy, loses gain or starts to hum, the preamp tubes may be bad. Since removal
of the tubes may expose extremely hazardous voltage levels, always refer replacement of the preamp tubes
to a qualified service center. Insist upon using only the highest quality, low-microphonic tubes!
System Block Diagram:
FOOTSWITCHES
CH. 1 LED
PATENTED
SWITCHING
CONTROL
STANDBY
POWER
CH. 2 LED
POWER
SUPPLY
BOOST
GAIN
EFFECTS LOOP
INPUT
TUBE
STAGE
TUBE
STAGE
VOLUME LOW MID HIGH
TUBE
STAGE
TUBE
STAGE
POWER
AMP
SPEAKER
OUTS
TUBE
STAGE
REVERB
PRESENCE
LOW MID HIGH MASTER
BRIGHT
REVERB
LEVEL
BALANCED
OUT
7
®
BV-60/6212 All-Tube Professional Series Guitar Amplifiers
Technical Specifications:
Output Power Rating
60 watts RMS nominal @ 5% THD
Input Impedance
1M ohm
System Gain
Tone Controls
Low
Mid
High
Bright
Ch. 1
74dB
16dB range @ 100Hz
23dB range @ 300Hz
25dB range @ 10kHz
5dB boost @ 5kHz
Low
Mid
High
Boost
Presence Control
5dB boost @ 10kHz
Effects Send/Return Level
0.7V RMS nominal
Balanced Out Level
0.4V RMS nominal, unloaded
Tube Complement
12AX7 (4), 12AU7 (1), 6L6 GT/5881 (2)
Internal Speaker(s)
Size and Type
BV-60
12” Crate 60 watt (1)
38 oz.
1 3/4”
8 ohm
Magnet
Voice Coil
Impedance
Ch. 2
87dB
8dB range @ 100Hz
7dB range @ 700Hz
10dB range @ 10kHz
13dB boost @ 1kHz
BV-6212
12” Crate 30 watt (2)
30 oz.
1 3/4”
16 ohm
Power Requirements
115V 60Hz, 105W; 3A Slo-Blo Fuse
Size and Weight
BV-60
19”H x 20”W x 10 1/2”D
48 lbs.
BV-6212
19”H x 28”W x 10 1/2”D
60 lbs.
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-60 and BV-6212 are covered with high-quality, durable Tolex®. To keep them looking their best, avoid
abrasive cleansers. Wipe the cabinets clean using a slightly dampened soft cloth. Do not spray cleaners directly
into the amplifier. Never use brass cleaners on the hardware since they could damage their protective coatings.
®
www.crateamps.com
©1996 SLM ELECTRONICS • A division of St. Louis Music • 1400 Ferguson Avenue • St. Louis, Mo 63133
P/N 47-584-02 • 09/96