B-52 Stealth LG-7512 User manual

1

INPUT
010
GAIN1
010
GAIN2
010
CONTOUR
010
BASS
010
MIDDLE
010
TREBLE
GAIN SW.
OVERDRIVE CHANNEL
1234567 8
EXTERNAL SPEAKER
8 OHM
GND LIFT
S
19 20 21 22 23 2
4 OHM
1. Read these instructions.
2. Follow all instructions.
3. Keep these instructions.
4. Heed all warnings.
5. Do not use the LG-7512 near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation open-
ings. Use in accordance with the
manufacturer’s instructions.
8. Do not use near any 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 pro-
vided plug does not fit your outlet,
consult an electrician for replace-
ment 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 LG-7512 amplifier.
11. Only use attachments / accessories
specified by B-52 Pro-Audio.
12. Unplug the LG-7512 during lightning
storms or when un-used for long
periods of time.
13. Refer all servicing to qualified
personnel. Servicing is required
when the LG-7512 has been dam-
aged in any way such as when
power-cord or plug is damaged,
liquid has been spilled, been
exposedtomoistureorrain,doesnot
operate normally, or has been
dropped.
14. To reduce the risk of fire or electric
shock, do not expose the LG-7512 to
rain or moisture.
IMPORTANT SAFETY
INFORMATION
GETTING TO KNOW YOUR LG-7512
(1) Input: Connects the electric guitar.
(2) Gain 1: Adjusts the amount of distortion in Gain 1 channel (LED
for Gain1 indicates when Gain 1 channel is in use).
(3) Gain 2:Adjusts the amount of distortion in Gain 1 channel (LED
for Gain 2 indicates when Gain 2 channel is in use).
(4) Contour: Adjusts the overall tone quality of Gain 2 channel. Low
Contour setting emphasize middle frequency. A higher setting will
notch the mid-range to produce the crunch sound characteristic in
most heavy metal sound.
(5) Gain Switch: Selects Gain 1 or Gain 2 in O.D. channel.
(6) Bass: Adjusts the amount of low frequency boost or cut as
desired in O.D. channel.
(7) Middle: Adjusts the amount of mid frequency boost or cut as
desired in O.D. channel.
F F R R O O N N T T P P A A N N E E L L V V I I E E W W
INPUT
010
GAIN1
010
GAIN2
010
CONTOUR
010
BASS
010
MIDDLE
010
TREBLE
GAIN SW.
010
LEVEL
OVERDRIVE CHANNEL
CH. SEL.
010
LEVEL
010
BASS
010
MIDDLE
010
TREBLE
CLEAN CHANNEL
010
REVERB
010
MASTER PHONES
POWER
ON
LG-7512
12345678910 11 12 13 14 15 16 17 18
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE
LINE OUT
FOOT SWITCH
CHANNEL
GAIN REVERB
EXTERNAL SPEAKER
8 OHM
010
LEVEL
010
LEVEL
RETURN SEND
CAUTION - TO REDUCE THE RISK OF FIRE,
REPLACE ONLY WITH THE SAME TYPE OF FUSE.
GND LIFT
S/No.:
CC
19 20 21 22 23 24 26 27 28 29 30 31
010
LEVEL
25
4 OHM
R R E E A A R R P P A A N N E E L L V V I I E E W W
2
(19) AC Inlet: Connects AC power cord.
(20) Fuse Holder: Contains primary fuse.
(21&22) Ground-Lift: Remove ground from the circuit to eliminate excessive
60 cycle hum.
(23) External Speaker Jacks: Connects the external speaker(s) with a
impedances of 8 and 4 ohms.
(24) Line Out Jack: Connects a unit with line level input, e.g. mixer.
(25) Level Control: Controls the Line Out Level.
(26) Footswitch Jack: Connects a footswitch to select clean/overdrive
channel and gain1/gain2 channel.

INPUT
010
GAIN1
010
GAIN2
010
CONTOUR
010
BASS
010
MIDDLE
010
TREBLE
GAIN SW.
010
LEVEL
OVERDRIVE CHANNEL
CH. SEL.
010
LEVEL
010
BASS
010
MIDDLE
010
TREBLE
CLEAN CHANNEL
010
REVERB
010
MASTER PHONES
POWER
ON
LG-7512
12345678 910 11 12 13 14 15 16 17 18
CAUTIONCAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE
LINE OUT
FOOT SWITCH
CHANNEL
GAIN REVERB
EXTERNAL SPEAKER
8 OHM
010
LEVEL
010
LEVEL
RETURN SEND
CAUTION - TO REDUCE THE RISK OF FIRE,
REPLACE ONLY WITH THE SAME TYPE OF FUSE.
GND LIFT
S/No.:
CC
19 20 21 22 23 24 26 27 28 29 30 31
010
LEVEL
25
4 OHM
F F R R O O N N T T P P A A N N E E L L V V I I E E W W
INPUT
010
GAIN1
010
GAIN2
010
CONTOUR
010
BASS
010
MIDDLE
010
TREBLE
GAIN SW.
010
LEVEL
OVERDRIVE CHANNEL
CH. SEL.
010
LEVEL
010
BASS
010
MIDDLE
010
TREBLE
CLEAN CHANNEL
010
REVERB
010
MASTER PHONES
POWER
ON
LG-7512
12345678 910 11 12 13 14 15 16 17 18
CAUTIONCAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE
LINE OUT
FOOT SWITCH
CHANNEL
GAIN REVERB
EXTERNAL SPEAKER
8 OHM
010
LEVEL
010
LEVEL
RETURN SEND
CAUTION - TO REDUCE THE RISK OF FIRE,
REPLACE ONLY WITH THE SAME TYPE OF FUSE.
GND LIFT
S/No.:
CC
19 20 21 22 23 24 26 27 28 29 30 31
010
LEVEL
25
4 OHM
R R E E A A R R P P A A N N E E L L V V I I E E W W
3
(8) Treble: Adjusts the amount of high frequency
boost or cut as desired in the O.D. channel.
(9) Level: Controls the complete signal of the over-
drive channel.
(10) Channel Switch: Selects between clean and
overdrive channel. (LED for Overdrive Channel
indicates when O.D. is in use. LED for Clean
Channel indicates when clean channel is in use.
(11) Level: Controls the complete signal of the clean
channel.
(12) Bass: Provides desired amount of bass response
in clean channel.
(13) Middle: Provides desired amount of middle
frequency equalization in clean channel.
(14) Treble: Provides desired amount of high
frequency equalization in clean channel.
(15) Reverb:Adjusts the reverberation effect.
(16) Master: Controls the overall signal level of the
guitar amplifier.
(17) Phones: Connects a stereo headphone.
(18) Power Switch: Turns the amplifier ON or OFF.
(27) Footswitch Jack: Connects a footswitch to switch
reverb ON and OFF.
(28) Return Level: Controls the returning signal level.
(29) Return Jack: Connects the guitar amplifier to out
put of an effects unit.
(30) Send Level: Controls the sending signal level.
(31) Send Jack: Connects the guitar amplifier to input
of an effects unit.
Do not attempt to service the LG-7512 by your-
self. Refer all servicing to a B-52 Authorized
dealer. Service is required when the LG-7512
has had liquid spilled on it or has been dam-
aged in any way, the amplifier has been
exposed to rain or moisture, does not operate
normally or has been dropped.
AMPLIFIER PRECAUTIONS
To reduce the risk of fire or electrical shock, do not expose
this unit to rain or moisture. Do not operate your LG-7512
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 powercord is not stretched,
pinched or otherwise abused. Ensure the power cord is
routed to avoid foot traffic. Your LG-7512 amplifier should
be cleaned only with a dry cloth.
WARNING: SHOCK HAZARD!

Output Power 75 watts RMS @ 8 ohms
110 watts RMS @ 4 ohms
Input Impedance: 500K Ohms
Maximum Input Level: -45dB
Power Consumption: 160 Watts
S/N Ratio: Greater Than 100 dB
Affects Send: Load Impedance 1K Ohm or Greater
Nominal Output Level: -8 dB
Effects Return Impedance: 100K Ohms
Optimum Input Level: -8 dB
Line Out: 0dB / 1V RMS
Phones: 60mW into 8ohm
Equalization: Bass : +/- 15dB at 50Hz
Middle : +/- 10dB at 600Hz
Treble : +/- 18dB at 3KHz
Dimensions: 25” (W) x 19” (D) x 11” (H)
Weight: 51 lbs
FEATURES
WARRANTY
Thank you for choosing this B-52 Pro-Audio sound prod-
uct. B-52 manufactures some of the world’s best sound-
ing and most reliable professional speaker systems and
components. E.T.I. Sound Systems, Inc., manufacturers
of B-52, takes great pride in thoroughly testing each
B-52 product prior to shipment. Please read the warran-
ty terms and conditions below and carefully read the pro-
vided Limited Warranty Card for additional terms and
conditions.
B-52 AMPLIFIER: E.T.I. Sound Systems, Inc. warrants
the original purchaser that the B-52 amplifier will be free
from defects in material and workmanship for a period of
(2) TWO YEARS from the original purchase date. A
dated sales receipt will establish coverage under this
warranty. This warranty will automatically terminate (2)
two years after the original sales date. If this product is
defective in materials or workmanship as warranted
above, your sole remedy shall be repair or replacement
as provided above. See provided Limited Warranty Card
for additional terms and conditions.
B-52 CABINETS: E.T.I. Sound Systems, Inc. offers a
LIFETIME warranty to the original purchaser that B-52
cabinet’s construction will be free from defects in materi-
al and workmanship. A dated sales receipt will establish
coverage under this warranty. The warranty does not
cover service or parts to repair damage caused by neg-
lect, abuse, normal wear & tear and cosmetic appear-
ance of the cabinetry not directly attributed to defects in
material or workmanship, or service & repair, modifica-
tions to the cabinet which has not be authorized or
approved by E.T.I. Sound Systems, Inc. If this product is
defective in materials or workmanship as warranted
above, your sole remedy shall be repair or replacement
as provided above. See provided Limited Warranty card
for additional terms and conditions.
INCIDENTAL OR CONSEQUENTIAL DAMAGE: In no
event E.T.I. Sound Systems, Inc. be liable for any inci-
dental or consequential damages arising out of the use
or inability to use of any B-52 product, even if, E.T.I.
Sound Systems, Inc. or a B-52 dealer has been advised
of the possibility of such damages, or any other claim by
any other party. Some States do not allow the exclusion
orlimitation of consequentialdamages, so theabove lim-
itation and exclusion may not apply to you. This warran-
ty gives you specific legal rights and you may also have
other rights that may vary from State to State. See pro-
vided Limited Warranty card for additional terms and
conditions.
RETURN PROCEDURES: In the unlikely event that a
defect should occur, follow the procedure outlined below.
Defective products must be shipped together with a
proof of purchase, freight prepaid and insured to the
Authorized B-52 Dealer from whom you purchased the
product or directly E.T.I. Sound Systems, Inc. If a prod-
uct must be returned directly to E.T.I. Sound Systems,
Inc. for warranty replacement/repair, a Return
Authorization Number (RAN) must be obtained from our
Customer Service Department prior to shipping the prod-
uct. You may obtain RAN by calling 800-344-4ETI.
FOR YOUR PROTECTION: Please complete and mail
the Purchase Information Card within (10) ten days of
the date of purchase so that we may contact you direct-
ly in the event a safety notification is issued in accor-
dance with the 1972 Consumer Product Safety Act. In
addition, we ask that you complete the brief question-
naire so me may analyze your answers and in this way,
help us evaluate our customer needs. See provided
Limited Warranty card for additional terms and condi-
tions.
4
■1/4” high input jack
■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 spring reverb
■Foot switch for channel select, reverb on/off, gain select
■Push switch for channel / gain select
■Headphones line out
■Effects send and return with level controls
■Line out with level control
■External speaker jacks
■Ground lift switch
■Custom built, heavy-duty 12” speaker
■Detachable casters for easy transport
SPECIFICATIONS
E.T.I. SOUND SYSTEMS, INC.
3383 Gage Avenue, Huntington Park, CA, 90255
Phone: [phone] Fax: [phone]
National: 1-800-344-4ETI
Internet: www.B-52StealthSeries.com
E-mail: [email protected]
E.T.I. Sound Systems is dedicated to product excellence and therefore continuously
attempts to improve each and every model we manufacture. This ongoing process
includes refinements in design, materials and workmanship, which may result in prod-
ucts that differ than those described in our literature. All features, specifications, and
prices are therefore subject to change without notice.