User manual B-52 ST6012

IMPORTANT SAFETY INSTRUCTIONS! 1) 2) 3) 4) 5) Read these instructions. Follow all instructions. Keep these instructions. Heed all warnings. DO NOT turn on the ST-6012 without the loudspeaker connected. Do not use the ST-6012 near water. Be extra cautious when moving the ST-6012 during rain or while transporting it over wet surfaces as water might splash onto the amplifier. Clean only with dry cloth. Do not block any ventilation openings and operate in accordance with manufacturer's instructions. Do not install near 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 ST-6012 amplifier. Only use attachments / accessories specified by B-52 Professional. Unplug the ST-6012 during lightning storms and when not in use. Refer all servicing to qualified personnel. Servicing is required when the ST-6012 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. To reduce the risk of fire or electric shock, do not expose the ST-6012 to rain or moisture. Moisture can damage the ST-6012 and can cause corrosion of electrical contacts. 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-6012. Never remove the front or rear panels of the ST-6012 while it is connected to an electrical outlet. Important Safety Instructions / Features .........2 Product Information ...........................................3 ST-6012 Controls ................................................4-5 Set-up & Warranty Information .........................5-7 Contact Information ...........................................8 INSIDE THIS INSTRUCTION MANUAL 6) 6) 7) 8) 9) This B-52 Stealth Series ST-6012 has a 100% pure, all-tube signal path, incredible tone and a wide array of guitarist-friendly controls and features the legendary Celestion Vintage 30 loudspeakers. It combines Russian Sovtek 6L6 power tubes with 12AX7 preamp tubes for solid tube tone and classic breakup. This roadworthy combo 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. All-Tube signal path 2 x 12" Celestion Vintage 30s Overdrive Channel: Gain 1, Gain 2 with contour, 3-band EQ and level control Clean Channel: Level control and 3-band EQ Rectifier Select: Tube AB1, Tube A and Solid-State Line level send and return with level controls Pushswitch for channel and gain select Porcelain tube sockets for increased reliability Master volume Spring reverb Headphones line out Line out with level control Selectable 4/8/16 ohms external speaker jacks Ground lift switch Rugged footswitch for channel select, Reverb on/off and gain select Rugged 18mm Baltic birch construction Detachable casters for easy transport 27" x 21" x 11" (W x H x D) Weight: 73 lbs. ST-6012 FEATURES 10) 11) 12) 13) 14) 15) 16) 17) 2 RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION HEED ALL WARNINGS! WARNING: To reduce the risk or fire or electrical shock do not expose this equipment to rain or moisture. Thank you for choosing the B-52 Stealth Series ST-6012 combo. The B-52 ST-6012 is a feature-laden all-tube 2 x 12" open-backed combo with 60 relentless watts ripping through two Celestion Vintage 30s. The ST-6012's foundation is outstanding tone, versatility and power. Each channel - Clean and Overdrive - has its own set of gain, treble, mid and bass equalization controls for maximum flexibility. The Clean Channel goes from classic sparkle to serious crunch while the Overdrive Channel features two independent gain options. Gain 1 moves from bluesy grit all the way to metallic shred. Switching to Gain 2 provides the same wide tonal range as Gain 1 but with the addition of a contour control. The contour control adds or subtracts the all important mids, effectively producing three amazing sounds that are all footswitch controllable! A 3-position rectifier switch adds even more versatility, offering Tube AB1, Tube A and Solid-State settings. The ST-6012 also features solid Baltic birch construction, detachable casters and a three function heavy-duty footswitch. ST-6012 60-WATT ALL-TUBE LEAD GUITAR COMBO! Power Tubes: Preamp Tubes: Reverb Tube: Rectifier Tube: SOVTEK TUBE CHART 2 5 1 1 x x x x 6L6 / 5881 12AX7 12AT7 5AR4 Power Handling: Freq. Response: Nominal Impedance: Sensitivity (dB): Voice Coil Diameter: Magnet Weight: 70 watts 70-5K Hz 16 Ohms 100 1 3/4" 50 oz B-52 Stealth Series amplifiers and speakers, including the ST-6012, 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. Do not attempt to service the ST-6012 by yourself. Refer all servicing to a B-52 Stealth Series Authorized dealer. Service is required when the ST-6012 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. To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your ST-6012 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-6012 amplifier should be cleaned only with a dry cloth. HEARING DAMAGE, PROLONGED EXPOSURE TO EXCESSIVE SPL AMPLIFIER MODULE PRECAUTIONS WARNING ­ SHOCK HAZARD: 3 ST-6012 - Front Panel Features & Descriptions INPUTS GAIN SW. OVERDRIVE CH. SW. HIGH LOW GAIN1 0 10 GAIN2 0 10 CONTOUR 0 10 0 BASS 10 MIDDLE 0 10 TREBLE 0 10 VOLUME 0 10 INPUTS 1. 2. 3. 4. 5. INPUT CONNECTOR - HIGH: Connects your guitar to the 6. ST-6012. B-52 recommends that you always use a cable that is screened or shielded. 10 0 10 0 10 0 LOW HIGH [Try both inputs and use the GAIN1 sounds best to you. The one that GAIN2 CONTOUR bottom line is trust your ears!] INPUT CONNECTOR - LOW: Connects your guitar to the ST-6012. B-52 recommends that you always use a cable that is 7. screened or shielded. 1 2 3 4 5 OVERDRIVE CHANNEL ­ GAIN 1: Adjusts the amount of 6 distortion in Gain 1. (Activated LED indicates in use). OVERDRIVE CHANNEL ­ GAIN SWITCH: Push switch Selects 8. between Gain 1 and Gain 2 controls. Activated LED lights indicate which channel is currently use. OVERDRIVE CHANNEL ­ GAIN 2: Adjusts the amount of 9. 1 2 3 GAIN SW. 4 5 6 OVERDRIVE 16 OHMS ST-6012 - Rear Panel Features & Descriptions GND LIFT To reduce the risk of fire or electrical shock, do not expose this unit to rain or moisture. Do not operate your ST-6012 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 ST-6012 amplifier should be cleaned only with a dry cloth. WARNING: SHOCK HAZARD! distortion in Gain 2. (Activated LED indicates use). OVERDRIVE CHANNEL ­ CONTOUR: Adjusts the overall tone quality of Gain 2 in the overdrive channel. Low contour settings 10 10 0 0 10 10 0 0 emphasize middle frequencies. A higher setting will notch the VOLUME MIDDLE BASS TREBLE mid-range to produce the deep crunch sounds characteristic in most heavy metal type music. OVERDRIVE CHANNEL ­ BASS: Adjusts the amount of low frequency boost or cut as desired in the overdrive channel. Bass 11 10 9 7 8 is B-52's signature. Turning this control clockwise increases depth and low-end punch to your music. OVERDRIVE CHANNEL ­ MIDDLE: Adjusts the amount of mid-range frequencies as desired in the overdrive channel. Similar to the Clean Channel function, the O.D. Channel Middle control adds body and punch to your sound. OVERDRIVE CHANNEL ­ TREBLE: Adjusts the amount of high frequency boost or cut as desired in the overdrive channel. Turning this control clockwise adds clarity to your sound. 10. OVERDRIVE ­ VOLUME: Controls the overall signal level of the overdrive channel. LOUDSPEAKER OUTPUTS 11. CHANNEL SWITCH: Push switch selects between the clean 60 WATTS RMS and overdrive channels. Activated LED lights indicate which channel is in use. 12. CLEAN CHANNEL ­ VOLUME: Controls the overall signal level 8 OHM / 4 OHM (4 & 8 OHMS PARRALLEL JACKS) 7 8 9 10 CH. SW. 11 V 21 22 23 GND LIFT LOUDSPEAKER OUTPUTS 25 24 60 WATTS RMS 16 OHMS (4 & 8 OHMS PARRALLEL JACKS) 26 8 OHM / 4 OHM All-Tu 4 21. AC INLET & FUSE HOLDER: Connects AC powercord as well as contains primary fuse. 22. 3-SETTING RECTIFIER SWITCH: SOLID-STATE ­ Gives tightest low-end definition and fastest attack. TUBE AB1 ­ Punchy, warm and tighter definition than Tube A. TUBE A ­ "Vintage" attack and feel. Warmest sounding setting. 23. GROUND / LIFT SWITCH: Removes ground from the circuit to eliminate 60-cycle hum. 21 22 23 24. 16 OHM LOUDSPEAKER JACK: Connects loudspeakers(s) that require a 16 Ohm load. 25. EXTERNAL LOUDSPEAKER JACKS: Connects the ST-6012 to external loudspeakers such as the ST-412V or ST-412S with a 4 Ohm or 8 Ohm load. 26. SPEAKER SELECT SWITCH: Allows you to select appropriate 4 Ohm or 8 Ohm load loudspeakers. You must ensure that the switch is set to appropriate impedance rating that matches your loudspeaker. Note: Ensure that loudspeaker impedance matches the correct jack connectors. 24 25 26 All-Tub CLEAN MASTER ON 10 ON VOLUME 0 10 BASS 0 10 MIDDLE 0 10 TREBLE 0 10 REVERB 0 10 MASTER 0 PHONES 12 OLUME 0 13. 14. 10 12 15. 16. 17. be Professional Amplifier ST-6012 of the clean channel. Adjusting the volume control enables you to 18. INPUT / PHONE JACK: Connects headphones to the ST-6012. produce sparkling clean sounds to crunchy, dirty blues. Lower 19. STANDBY ON/OFF SWITCH: Allows the ST-6012 to remain PHONES ON for limited periods of inactivity without the risk of 10 0 10 10 0 0 10 0 turned settings 10 produce pure clean tones. Turning0this control clockwill wise will gradually produce moderate distortion. damaging / over-heating the amplifier tubes. When POWER MIDDLE STANDBY the Standby MASTER TREBLE REVERB BASS CLEAN CHANNEL ­ BASS: Adjusts the amount of low switch is in the STANDBY position the ST-6012 is in a nonAll-Tube Professional Amplifier frequency boost or cut as desired in the clean channel. Adding operational setting. When in Standby the tubes remain bass will increase the warmth of your sound. hot and ready for use. When the Standby switch is in the CLEAN CHANNEL ­ MIDDLE: Adjusts the amount of mid-range ON position the ST-6012 is operational and should not be left 17 14 15 16 13 18 20 frequencies as desired in the clean channel. Turning the middle inactive. DO NOT turn on the ST-6012 or19 the Standby have control clockwise will increase the amount of punch in your switch set to ON without it connected to a loudspeaker. 20. POWER ON/OFF SWITCH: Turns the ST-6012 on and off. sound. Setting the control all the way to the left will make your music sound more hollow. CLEAN CHANNEL - TREBLE: Adjusts the amount of high AMPLIFIER PRECAUTIONS frequency boost or cut as desired in the clean channel. Turning the Treble control clockwise will sharpen your sound, Do not attempt to service the ST-6012 by alternatively, turning the control counterclockwise softens your yourself. Refer all servicing to a B-52 sound. REVERB CONTROL: Adjusts the amount of reverb produced by Authorized dealer. Service is required when the amplifier. To increase the amount of reverb turn clockwise. CAUTION EFFECTSthe ST-6012 has had liquid spilled on it or FOOT SW LINE OUT RISK OF ELECTRIC SHOCK MASTER VOLUME: Controls the overall signal level of the has been damaged in any way, theDO NOT OPEN amplifier ST-6012. To increase the overall signal and/or volume, rotate LEVEL LEVEL LEVEL CAUTION: TO REDUCE THE RISK OF the control clockwise. The Master volume control allows you to FIRE, REPLACE ONLY WITH THE SAME has been exposed to rain or TYPE OF FUSE. moisture, does TO THE RISK preset the output levels of both the Clean and Overdrive FIRE OR ELECTRICAL not operate normally or has WARNING:THIS REDUCESHOCK, RAINNOT been EQUIPMENT TO DOOF dropped. EXPOSE Channels. OR MOISTURE 13 CLEAN 14 15 16 MASTER 17 18 All-Tube Professional Amplifier ST-6012 STANDBY POWER ON 19 ON 20 ST-6012 REVERB GAIN & CHANNEL RETURN SEND CC S/No.: FOOT 27 SW 28 REVERB GAIN & CHANNEL 29 RETURN e Professional Amplifier ST-6012 LEVEL EFFECTS 30 LEVEL 31 SEND 32 LEVEL OUT 33LINE34 RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION CAUTION: TO REDUCE THE RISK OF FIRE, REPLACE ONLY WITH THE SAME TYPE OF FUSE. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE CC S/No.: 27. FOOTSWITCH ­ REVERB INPUT JACK: Connects footswitch to turn Reverb On/Off. 28. FOOTSWITCH ­ GAIN AND CHANNEL SWITCH: Switch between Gain 1 and Gain 2 in the overdrive Channel. Also switches between clean and overdrive channel. 29. EFFECTS ­ RETURN JACK: Connects the ST-6012 to the output of an effects unit. 30. EFFECTS ­ RETURN LEVEL: Controls the input level of the returning signal from an effects unit. 31. EFFECTS ­ SEND LEVEL: Controls the sending level output to an effects unit. 27 28 29 30 32. EFFECTS - SEND JACK: Connects to the ST-6012 to the input off an effects unit. 33. LINE OUT LEVEL CONTROL: Controls the output level of the Line Out Level. 34. LINE OUT JACK: Connects the ST-6012 to an external linelevel device such as a mixing board. 31 32 33 34 5 LIMITED WARRANTY Thank you for choosing a B-52 sound product. B-52 manufactures some of the world's best sounding and most reliable professional speaker systems, amplifiers and components. E.T.I. Sound Systems, Inc., makers of B-52, takes great pride in thoroughly testing each B-52 product prior to shipment. ty will automatically terminate 90 Days after the original retail sales date. This 90-Day warranty does not cover service or parts to repair damage caused by accident, disaster, misuse, abuse, over-powering, negligence, inadequate packing or shipping procedures and service, repair or modifications of the amplifier which has not been authorized or approved by E.T.I.. This warranty is in lieu of all other expressed warranties. If this product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. HIGH-FREQUENCY DEVICES: E.T.I. Sound Systems, Inc. offers a LIFETIME warranty (effective January 1, 2002) to the original purchaser that B-52 high frequency (tweeters) devices will be free from defects in material and workmanship. A dated sales receipt will establish coverage under this warranty. This warranty does not warranty neglect or abuse. NO WARRANTY IS OFFERED ON HIGH-FREQUENCY DEVICES IN B-52 SYSTEMS WITH A BI-AMP SWITCH OPTION. The lifetime warranty on high-frequency devices does not cover service or parts to repair damage caused by accident, disaster, misuse, abuse, negligence, inadequate packing or shipping procedures or service, repair or modifications of the product which has not been authorized or approved by E.T.I. This warranty is in lieu of all other expressed warranties. If this product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. LOUDSPEAKER AND MID-RANGE COMPONENTS: E.T.I. Sound Systems, Inc. warrants the original purchaser that B-52 loudspeakers and/or midrange components will be free from defects in material and workmanship for a period of (5) FIVE YEARS from the original purchase date (effective January 1, 2002). A dated sales receipt will establish coverage under this warranty. This warranty will automatically terminate (5) years after the original retail sales date. This (5) five-year warranty does not cover service or parts to repair damage caused by accident, disaster, misuse, abuse, burnt voice-coils, over-powering, negligence, inadequate packing or shipping procedures and service, repair or modifications of the component which has not been authorized or approved by E.T.I.. This warranty is in lieu of all other expressed warranties. If this product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. B-52 CABINETS: E.T.I. Sound Systems, Inc. offers a LIFETIME warranty (effective January 1, 2002) to the original purchaser that a B-52's cabinet construction will be free from defects in material and workmanship. A dated sales receipt will establish coverage under this warranty. This warranty does not cover service or parts to repair damage caused by neglect, abuse, normal & wear and cosmetic appearance of the cabinetry not directly attributed to defects in material or workmanship, or service, repair, modifications of the cabinet, which has not been authorized or approved by E.T.I. If this product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. RETURN PROCEDURES: In the unlikely event that a defect should occur, follow the procedure outlined below. Defective products must be shipped, together with proof of purchase, freight pre-paid and insured to the Authorized B-52 Dealer from whom you purchased the product or directly to E.T.I. Sound Systems. If a product must be returned to E.T.I. Sound Systems for warranty replacement/repair, a Return Authorization Number must be obtained from our Customer Service Department prior to shipping the product. NEVER RETURN THE ENTIRE CABINET__JUST THE DEFECTIVE COMPONENT. Identify and remove the defective component. If you are uncertain which component is defective, or need directions for removing a component, please contact our Customer Service Department for assistance. Components which are a part of an original B-52 speaker box must be sent directly to E.T.I. Products must be shipped in the original packaging or its equivalent; in any case, the risk of loss or damage in transit is to be borne by the purchaser. The Return Authorization Number must appear in large print directly below the shipping address. Always include a brief description of the defect, along with your correct return address and telephone number. When calling to inquire about a returned product, always refer to the Return Authorization Number. If E.T.I. determines that the unit was defective in materials or workmanship at any time during the warranty period, E.T.I. has the option of repairing or replacing the product at no additional charge, except as set forth below. All replaced parts become a property of E.T.I. Products replaced or repaired under this warranty will be returned via ground-shipping-within the United States-freight prepaid. E.T.I. is not responsible for costs associated with expedited shipping, either to E.T.I. or the return of the product to the customer. INCIDENTAL OR CONSEQUENTIAL DAMAGE: In no event will E.T.I. 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. 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 which may vary from state to state. GUITAR AMPLIFIERS: E.T.I. Sound Systems, Inc. warrants the original purchaser that B-52 guitar amplifiers will be free from defects in material and workmanship for a period of (5) FIVE YEARS from the original purchase date (effective January 1, 2002). A dated sales receipt will establish coverage under this warranty. This warranty will automatically terminate (5) years after the original retail sales date. This (5) five-year warranty does not cover service or parts to repair damage caused by accident, disaster, misuse, abuse, over-powering, negligence, inadequate packing or shipping procedures and service, repair or modifications of the amplifier which has not been authorized or approved by E.T.I.. This warranty is in lieu of all other expressed warranties. If this product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. GUITAR AMPLIFIER TUBES: E.T.I. Sound Systems, Inc. warrants the original purchaser that amplifier tubes used in B-52 Stealth Series All-Tube Amplifiers will be free from defects in material and workmanship for a period of 90 DAYS from the original date of purchase (effective January 1, 2002). A dated sales receipt will establish coverage under this warranty. This warran- 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 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. CUSTOMER SERVICE: Our dedicated staff is ready to help you with any B-52 warranty or product questions you may have. Please call 323-277-4100 (9:00AM to 4:00PM Pacific Standard Time, United States). E.T.I. Sound Systems, INC. 3383 Gage Ave., Huntington Park, CA, 90255 6 3383 Gage Avenue, Huntington Park, CA, 90255 Phone: 323-277-4100 Fax: 323-277-4108 National: 1-800-344-4384 Internet: www.B-52PRO.com E-mail: info@B-52PRO.com 8 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.