B-52 ST100A User Manual
CAUTIONCAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
IMPORTANT SAFETY
INSTRUCTIONS!
1) Read these instructions.
2) Follow all instructions.
3) Keep these instructions.
4) Heed all warnings.
DO NOT turn on the ST-100A without the
5)
loudspeaker connected.
6) Do not use the ST-100A near water. Be extra
cautious when moving the ST-100A during
rain or while transporting it over wet surfaces
as water might splash onto the amplifier.
6) Clean only with dry cloth.
7) Do not block any ventilation openings and
operate in accordance with manufacturer’s
instructions.
8) Do not install near heat sources such as
radiators, stoves or other devices that may
produce heat.
9) Do not defeat the safety purpose of the
polarization or grounding-type plug. A
polarized plug has two blades with one wider
than the other. A grounding-type plug has two
blades and a third grounding prong. The wide
blade or the third prong is provided for your
safety. If the provided plug does not fit your
outlet, consult an electrician for replacement
of the obsolete outlet.
10) Protect the power cord from being walked on
or pinched, particularly at the plug and the
point where it exits the ST-100A amplifier.
11) Only use attachments / accessories specified
by B-52 Professional.
12) Unplug the ST-100A during lightning storms
and when not in use.
13) Refer all servicing to qualified personnel.
Servicing is required when the ST-100A has
been damaged in any way such as when
power-cord or plug is damaged, liquid has
been spilled into the amplifier, the unit has
been exposed to moisture or rain, does not
operate normally, or has been dropped.
14) To reduce the risk of fire or electric shock, do
not expose the ST-100A to rain or moisture.
15) Moisture can damage the ST-100A and can
cause corrosion of electrical contacts.
16) Keep the unit out of extended or intense
direct sun light. No containers filled with any
type of liquid should be placed on or near the
ST-100A.
Never remove the front or rear panels of
17)
the ST-100A while it is connected to an
electrical outlet.
INSIDE THIS INSTRUCTION MANUAL
Important Safety Instructions /
Features...............................................................2
Important Information........................................3
ST-100A Controls................................................4-5
Set-up & Warranty Information.........................5-7
Contact Information...........................................8
ST-100A FEATURES
This B-52 Stealth Series ST-100A has a 100% pure, all-tube
signal path, incredible tone and a wide array of guitarist friendly features. It combines Russian Sovtek 6L6 power tubes with
12AX7 preamp tubes for solid tube tone and classic breakup.
This roadworthy head provides serious musicians with
monstrous gain, extreme levels of distortion and a sparkling
clean channel. Selectable solid-state or tube rectification
through a Sovtek 5AR4 ensures complete tonal authenticity.
●
1/4” high input jacks
●
Overdrive channel with gain 1, gain 2 with contour, 3-band
EQ and level control
●
Clean channel with level control and 3-band EQ
●
Master volume and reverb
●
Rugged foot switch for channel select, reverb on/off and
gain select
●
Push switch for channel and gain select
●
Headphones line out
●
Effects send and return with level controls
●
Line out with level control
●
Selectable external speaker jacks
●
Ground lift switch
●
Rectifier select switch for: Tube A, Tube AB1 and
Solid-State
●
27” x 11” x 11” (W x H x D)
●
Weight: 52 lbs.
SOVTEK TUBE CHART
Power Tubes: 4 x 6L6
Preamp Tubes: 5 x 12AX7
Reverb Tube: 1 x 12AT7
Rectifier Tube: 1 x 5AR4
HEED ALL WARNINGS!
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WARNING: To reduce the risk or fire or
electrical shock do not expose this
equipment to rain or moisture.
ST-100A 100-WATT ALL-TUBE LEAD GUITAR AMPLIFIER!
Thank you for choosing the B-52 Stealth Series ST-100A amplifier. This guitar amplifier is perfect for
guitarists of every level. Whether you are playing to a stadium crowd of 50,000 or practicing at home in
your garage, the ST-100A will produce awesome crunch, smooth mids and crystal-clean highs. It is also
capable of producing massive amounts of distortion, perfect for any style from Blues to metal.
This instruction manual explains all that the ST-100A has to offer, how to operate and control each feature
so you can achieve the sound you desire. B-52
HIGHLY recommends that you read this detailed
instruction manual carefully and heed all warnings.
B-52 STEALTH SERIES LOGOS
B-52’s lead guitar speaker cabinets are fitted with chrome or gold logos. You will notice that the ST-100A tube
amplifier has a chrome finish. If you have purchased a B-52 LG-412V and/or LG-412S (pictured below) to accompany the ST-100A, as a half-stack or full-stack, simply replace the gold logo on the speaker grill with the chrome logo provided
inside the ST-100A packaging. To remove the gold logo, gently place a flat-head screw driver between the back of the logo and
metal grill and “pop” it off. To attach the chrome logo, B-52 recommends using a multi-purpose silicon, which can be purchased
from most hardware stores. Apply this silicon to the back of the chrome logo and push firmly onto the grill. Allow approximately
1hr to dry. If you already own a LG-412V or LG-412S and need matching B-52 chrome logos, please call 1-800-344-4384 to
request shipment.
B-52 Stealth Series Speaker Cabinets
(Recommended for use with ST-100A)
LG-412V –400-Watt RMS speaker cabinet - Slant
LG-412S –400-Watt RMS speaker cabinet - Straight
The B-52 LG-412V and LG-412S, 4 x 12” slant and
straight cabinets are a perfect complement to the
ST-100A all-tube amplifier. They offer awesome tone and
incredible projection. With four custom-built, 100-watt 12”
speakers, these cabinets provide crystal clear highs and
heavy distortion with classic breakup.
FEATURES:
●
4 x 100-watt, custom built, heavy-duty speakers
●
16-gauge metal grill for ultimate protection
●
Rear porting for extended low-frequency response
●
Metal handles, rubber feet and metal corners
●
Detachable casters for easy transport
●
Authentic black vinyl finish
HEARING DAMAGE, PROLONGED EXPOSURE TO EXCESSIVE SPL
B-52 Stealth Series amplifiers and speakers, including the ST-100A, are capable of producing sound pressure levels (SPL) sufficient to
cause permanent hearing damage to performers, production crews or people in the audience. Hearing protection devices such ear-plugs
are recommended. Caution should be taken to avoid extended SPL is excess of 90 dBA.
LG-412V
LG-412S
AMPLIFIER MODULE PRECAUTIONS
Do not attempt to service the ST-100A by yourself. Refer all servicing to a B-52 Stealth Series Authorized dealer. Service is required when
the ST-100A has had liquid spilled on or inside the unit, has been damaged in any way, has been exposed to rain or moisture, does not
operate normally or has been dropped.
WARNING – SHOCK HAZARD:
To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your ST-100A near a pool or other
standing water. Make sure all blades on the polarized power plug are fully inserted into the power source. Ensure the power cord is not
stretched, pinched or otherwise abused. Ensure the power cord is routed to avoid foot traffic. Your ST-100A amplifier should be cleaned only
with a dry cloth.
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