User manual B-52 LG7512

1 F RO N T P A N E L VI E W F RO N T P A N E L VI E W IMPORTANT SAFETY INFORMATION 1. 2. 3. 4. 5. 6. 7. 8. 9. Read these instructions. Follow all instructions. Keep these instructions. Heed all warnings. Do not use the LG-7512 near water. Clean only with a dry cloth. Do not block any ventilation openings. Use in accordance with the manufacturer's instructions. Do not use near any heat sources such as radiators, stoves, or other devices that may produce heat. 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. Protect the power cord from being walked on or pinched, particularly at the plug and the point where it exits the LG-7512 amplifier. Only use attachments / accessories specified by B-52 Pro-Audio. Unplug the LG-7512 during lightning storms or when un-used for long periods of time. Refer all servicing to qualified personnel. Servicing is required when the LG-7512 has been damaged in any way such as when power-cord or plug is damaged, liquid has been spilled, been exposed to moisture or rain, does not operate normally, or has been dropped. To reduce the risk of fire or electric shock, do not expose the LG-7512 to rain or moisture. OVERDRIVE CHANNEL INPUT GAIN1 0 10 GAIN2 0 10 CONTOUR 0 10 GAIN SW. 0 BASS 10 MIDDLE 0 10 TREBLE 0 10 OVERDRIVE CHANNEL INPUT 1 (1) (2) (4) (5) (6) (7) GETTING TO KNOW YOUR LG-7512 GAIN1 0 10 2 GAIN2 0 3 10 CONTOUR 0 4 10 5 GAIN SW. 0 BASS 6 10 MIDDLE 0 7 10 TREBLE 0 8 10 1 (3) 10. 11. RE AR P AN E L VI E W RE AR P AN E L VI E W Input: Connects the electric guitar. Gain 1: Adjusts the amount of distortion in Gain 1 channel (LED for Gain1 indicates when Gain 1 channel is in use). 2 3 6 5 7 Gain 2: Adjusts the amount4 distortion in Gain 1 channel (LED 8 of for Gain 2 indicates when Gain 2 channel is in use). 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. Gain Switch: Selects Gain 1 or Gain 2 in O.D. channel. Bass: Adjusts the amount of low frequency boost or cut as desired in O.D. channel. Middle: Adjusts the amount of mid frequency boost or cut as desired in O.D. channel. EXTERNAL SPEAKER 12. 13. GND LIFT 19 20 21 GND 22 LIFT 4 OHM 8 OHM EXTERNAL SPEAKER 23 8 OHM 4 OHM 19 20 14. (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. 21 22 23 2 F RO N T P A N E L VI E W F RO N T P A N E L VI E W CLEAN CHANNEL POWER 0 LEVEL 10 CH. SEL. 0 LEVEL 10 0 BASS 10 MIDDLE 0 10 TREBLE 0 10 REVERB 0 10 MASTER 0 10 PHONES CLEAN CHANNEL LG-7512 ON 0 (8) LEVEL 10 9 (9) (10) 9 (11) (12) (13) (14) CH. SEL. BASS TREBLE LEVEL MIDDLE Treble: Adjusts the amount of high frequency boost or cut as desired in the O.D. channel. Level: Controls the complete signal of the overdrive channel. Channel Switch: Selects between clean and overdrive channel. (LED12 Overdrive Channel for 14 11 10 13 indicates when O.D. is in use. LED for Clean Channel indicates when clean channel is in use. Level: Controls the complete signal of the clean channel. Bass: Provides desired amount of bass response in clean channel. Middle: Provides desired amount of middle frequency equalization in clean channel. S/No.: Treble: Provides desired amount of high frequency equalization in clean channel. 0 10 0 10 0 10 0 10 10 11 12 13 14 PHONES MASTER REVERB (15) Reverb: Adjusts the reverberation effect. LG-7512 (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. 0 10 0 10 15 16 17 POWER 18 ON 15 CC Do not attempt to service the LG-7512 by yourself. 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 damCAUTION aged in any way, the amplifier has been RISK OF ELECTRIC SHOCK exposed to rain or moisture, does not operate DO NOT OPEN normally or has been dropped. AMPLIFIER PRECAUTIONS 16 17 18 CC 0 LEVEL 10 S/No.: FOOT SWITCH CAUTION - TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE OF FUSE. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL RE A R EQUIPMENT TO E W SHOCK, DO NOT EXPOSE THISP A N E L V IRAIN OR MOISTURE RE A R P A N E L V I E W RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION LINE OUT 24 0 LEVEL 10 CHANNEL REVERB GAIN FOOT SWITCH 26 25 27 CAUTION - TO REDUCE THE RISK OF FIRE, 10 0 REPLACE ONLY WITH THE SAME TYPE OF FUSE. 10 0 LEVEL WARNING: TO REDUCE THE RISK OF FIRE SEND OR ELECTRICAL LEVEL RETURN SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE 28 29 30 31 LINE OUT 24 (27) (28) (29) (30) (31) 25 CHANNEL REVERB GAIN 26 27 0 LEVEL 10 RETURN 0 LEVEL 10 SEND Footswitch Jack: Connects a footswitch to switch reverb ON and OFF. Return Level: Controls the returning signal level. Return Jack: Connects the guitar amplifier to out put of an effects unit. Send Level: Controls the sending signal level. Send Jack: Connects the guitar amplifier to input of an effects unit. 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! 28 29 30 31 3 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. Thank you for choosing this B-52 Pro-Audio sound product. B-52 manufactures some of the world's best sounding 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 warranty terms and conditions below and carefully read the provided Limited Warranty Card for additional terms and conditions. WARRANTY s s s s s s s s s s s s s 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 FEATURES INCIDENTAL OR CONSEQUENTIAL DAMAGE: In no event E.T.I. Sound Systems, Inc. be liable for any incidental 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 or limitation of consequential damages, so the above limitation and exclusion may not apply to you. This warranty gives you specific legal rights and you may also have other rights that may vary from State to State. See provided 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 product 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 product. You may obtain RAN by calling 800-344-4ETI. 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 material 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 neglect, abuse, normal wear & tear and cosmetic appearance of the cabinetry not directly attributed to defects in material or workmanship, or service & repair, modifications 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. Output Power SPECIFICATIONS Input Impedance: Maximum Input Level: Power Consumption: S/N Ratio: Affects Send: Nominal Output Level: Effects Return Impedance: Optimum Input Level: Line Out: Phones: Equalization: Dimensions: Weight: 75 watts RMS @ 8 ohms 110 watts RMS @ 4 ohms 500K Ohms -45dB 160 Watts Greater Than 100 dB Load Impedance 1K Ohm or Greater -8 dB 100K Ohms -8 dB 0dB / 1V RMS 60mW into 8ohm Bass : +/- 15dB at 50Hz Middle : +/- 10dB at 600Hz Treble : +/- 18dB at 3KHz 25" (W) x 19" (D) x 11" (H) 51 lbs 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 products that differ than those described in our literature. All features, specifications, and prices are therefore subject to change without notice. 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 directly in the event a safety notification is issued in accordance with the 1972 Consumer Product Safety Act. In addition, we ask that you complete the brief questionnaire 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 conditions. 3383 Gage Avenue, Huntington Park, CA, 90255 Phone: 323-277-4100 Fax: 323-277-4108 National: 1-800-344-4ETI Internet: www.B-52StealthSeries.com E-mail: info@B-52PRO.com E.T.I. SOUND SYSTEMS, INC. 4