User manual B-52 ST100A

IMPORTANT SAFETY INSTRUCTIONS! 1) 2) 3) 4) 5) 6) 6) 7) 8) 9) Read these instructions. Follow all instructions. Keep these instructions. Heed all warnings. DO NOT turn on the ST-100A without the loudspeaker connected. 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. 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-100A amplifier. Only use attachments / accessories specified by B-52 Professional. Unplug the ST-100A during lightning storms and when not in use. 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. To reduce the risk of fire or electric shock, do not expose the ST-100A to rain or moisture. Moisture can damage the ST-100A 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-100A. Never remove the front or rear panels of the ST-100A while it is connected to an electrical outlet. Important Safety Instructions / Features...............................................................2 Important Information ........................................3 ST-100A Controls................................................4-5 Set-up & Warranty Information .........................5-7 Contact Information ...........................................8 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. q q INSIDE THIS INSTRUCTION MANUAL ST-100A FEATURES q q q 10) 11) 12) 13) q q q q q q q q q 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 4 5 1 1 x x x x 14) 15) 16) Power Tubes: Preamp Tubes: Reverb Tube: Rectifier Tube: 6L6 12AX7 12AT7 5AR4 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-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. ST-100A 100-WATT ALL-TUBE LEAD GUITAR AMPLIFIER! 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 LOGOS B-52 Stealth Series Speaker Cabinets LG-412V ­400-Watt RMS speaker cabinet - Slant LG-412S ­400-Watt RMS speaker cabinet - Straight (Recommended for use with ST-100A) 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: q 4 x 100-watt, custom built, heavy-duty speakers q 16-gauge metal grill for ultimate protection q Rear porting for extended low-frequency response q Metal handles, rubber feet and metal corners q Detachable casters for easy transport q Authentic black vinyl finish LG-412S LG-412V 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. 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. 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. HEARING DAMAGE, PROLONGED EXPOSURE TO EXCESSIVE SPL AMPLIFIER MODULE PRECAUTIONS WARNING ­ SHOCK HAZARD: 3 ST-100A - Front Panel Features & Descriptions ON ON MASTER CLEAN POWER STANDBY ST-100A - Rear Panel Features & Descriptions CC S/No.: EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE the control clockwise. The Master volume control allows you to POWER ON/OFF SWTICH: Turns the ST-100A on and off. preset the output levels of both the Clean and Overdrive STANDBY ON/OFF SWITCH: Allows the ST-100A to remain Channels. turned ON for limited periods of inactivity without the risk of 10 0 10 0 10 10 0 0 10 10 0 0 damaging / over-heating the amplifier tubes. WhenPHONES the Standby 5. REVERB CONTROL: Adjusts the amount of reverb produced by POWER STANDBY MIDDLE TREBLE BASS VOLUME MASTER theREVERB To increase the amount of reverb turn clockwise. amplifier. switch is in the STANDBY position the ST-100A is in a nonoperational setting. All-Tube Professional Amplifier tubes remain 6. CLEAN CHANNEL - TREBLE: Adjusts the amount of high When in Standby the Sovtek frequency boost or cut as desired in the clean channel. Treble hot and ready for use. This bypasses the time required for the adds brightness to your music. Turning the Treble control tubes to warm up before use. When the Standby switch is in the 1 position the ST-100A is operational and should 3 be left 4 clockwise will sharpen your sound, alternatively, turning the 2 6 5 7 8 9 ON not control counterclockwise softens your sound. inactive. DO NOT turn on the ST-100A or have the Standby 7. CLEAN CHANNEL ­ MIDDLE: Adjusts the amount of mid-range switch set to ON without it connected to a loudspeaker. 3. INPUT / PHONE JACK: Connects headphones to the ST-100A. frequencies as desired in the clean channel. Turning the middle 4. MASTER VOLUME: Controls the overall signal level of the control clockwise will increase the amount of depth in your ST-100A. To increase the overall signal and/or volume, rotate music. Setting the control all the way to the left will make your music sound more hollow. 8. CLEAN CHANNEL ­ BASS: Adjusts the amount of low WARNING: SHOCK HAZARD! frequency boost or cut as desired in the clean channel. Adding To reduce the risk of fire or electrical shock, do not expose this unit to rain bass will increase the warmth of your sound. or moisture. Do not operate your ST-100A near a pool or other standing CAUTION ­ VOLUME: EFFECTS9. CLEAN CHANNEL FOOT SW Controls the overall signal level water. Make sure all blades on the polarized power plug are fully inserted LINE OUT RISK OF ELECTRIC SHOCK of the clean channel.Adjusting the volume control enables you to DO NOT OPEN into the power source. Ensure the powercord is not stretched, pinched or produce sparkling clean sounds to crunchy, dirty blues. Turned CAUTION: TO REDUCE THE RISK OF LEVEL LEVEL otherwise abused. Ensure the power cord is routed to avoid foot traffic. LEVEL FIRE, REPLACE ONLY WITH THE SAME all the way to the left you will experience clean sounds. A setting TYPE OF FUSE. Your ST-100A amplifier should be cleaned only with a dry cloth. WARNING: TO REDUCE THE RISK OF all the way to the right will produce moderate levels of distortion. FIRE OR ELECTRICAL SHOCK, DO NOT 1. 2. ON 1 2 ON All-Tube Professional Amplifier ST-100A PHONES MASTER 0 10 REVERB 0 10 TREBLE 0 10 MIDDLE 0 10 0 BASS 10 VOLUME 0 10 3 4 MASTER 5 6 7 CLEAN 8 9 ST-100A SEND RETURN GAIN & CHANNEL REVERB All-Tube Professional Ampl ST-100A 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 LINE OUT 21 LEVEL 22 23 LEVEL EFFECTS 24 25 LEVEL 26 FOOT SW 28 27 GAIN & CHANNEL REVERB CC S/No.: SEND RETURN All-Tube Professional Ampli ST-100A 21 4 21. LINE OUT JACK: Connects the ST-100A to an external linelevel device such as a mixing board. 22. LINE OUT LEVEL CONTROL: Controls the output capacity of the Line Out Level. 23. EFFECTS - SEND JACK: Connects to the ST-100A to the input off an effects unit. 24. EFFECTS ­ SEND LEVEL: Controls the sending level output to an effects unit. 25.EFFECTS ­ RETURN LEVEL: Controls the input capacity of 22 23 24 25 26 27 28 the returning signal from an effects unit. 26. EFFECTS ­ RETURN JACK: Connects the ST-100A to the output of an effects unit. 27. FOOTSWITCH ­ GAIN AND CHANNEL SWITCH: Switch between Gain 1 and Gain 2 in the overdrive Channel. Also switches between clean and overdrive channel. 28. FOOTSWITCH ­ REVERB INPUT JACK: Connects footswitch to turn Reverb On/Off. 29. SPEAKER SELECT SWITCH: Allows you to select appropriate CH. SW. OVERDRIVE GAIN SW. INPUTS E CH. SW. VOLUME 0 10 TREBLE 0 10 MIDDLE 0 10 0 BASS 10 CONTOUR 0 10 GAIN2 0 10 GAIN1 0 10 LOW HIGH ifier 10. CHANNEL SWITCH: Push switch selects between the clean between Gain 1 and Gain 2 controls. Activated LED lights and overdrive channels. Activated LED lights indicate which indicate which channel is currently use. 18. OVERDRIVE10 CHANNEL ­ 10 GAIN 1: Adjusts the amount of channel is10 use. 0 in 10 0 0 10 10 0 0 10 0 0 HIGH LOW distortion in Gain 1. (Activated LED indicates in use). 11. OVERDRIVE ­ VOLUME: Controls the overall signal level of the BASS GAIN2 MIDDLE CONTOUR TREBLE GAIN1 VOLUME overdrive channel. 19. INPUT CONNECTOR - LOW: Connects your guitar to the 12. OVERDRIVE CHANNEL ­ TREBLE: Adjusts the amount of high ST-100A. B-52 recommends that you use a cable that is frequency boost or cut as desired in the overdrive channel. screened or shielded. 20. INPUT CONNECTOR - HIGH: Connects your guitar to the Turning this control clockwise adds clarity to your sound. 10 OVERDRIVE CHANNEL ­ MIDDLE: Adjusts the amount of 15 ST-100A.16 17 18 that 19 use a 20 that 11 12 14 13 13. B-52 recommends you cable mid-range frequencies as desired in the overdrive channel. is screened or shielded. [Try both inputs and use the one that sounds best to you. The Similar to the Clean Channel function, the O.D. Channel Middle control adds body and punch to your sound. bottom line is trust your ears!] 14. OVERDRIVE CHANNEL ­ BASS: Adjusts the amount of low frequency boost or cut as desired in the overdrive channel. Bass is B-52's signature. Turning this control clockwise increases depth and low-end punch to your music. AMPLIFIER PRECAUTIONS 15. OVERDRIVE CHANNEL ­ CONTOUR: Adjusts the overall tone quality of Gain 2 in the overdrive channel. Low contour settings Do not attempt to service the ST-100A by yourself. Refer emphasize middle frequencies. A higher setting will notch the all servicing to a B-52 Authorized dealer. Service is LOUDSPEAKER crunch sounds characteristic in OUTPUTS mid-range to produce the deep 100 WATTS RMS required when the ST-100A has had liquid spilled on it or most heavy metal type music. has been damaged in any way, the amplifier has been 16. OVERDRIVE CHANNEL ­ GAIN 2: Adjusts the amount of exposed to rain or moisture, does not operate normally or distortion in Gain 2. (Activated LED indicates use). has been dropped. 4 OHM/8 OHM GND LIFT 17. OVERDRIVE CHANNEL ­ GAIN SWITCH: Push switch Selects (4 & 8 OHMS PARRALLEL JACKS) 16 OHMS 10 11 12 13 OVERDRIVE 14 15 16 GAIN SW. 17 18 19 INPUTS 20 29 4 OHM/8 OHM 30 LOUDSPEAKER OUTPUTS 31 100 WATTS RMS (4 & 8 OHMS PARRALLEL JACKS) 16 OHMS 32 GND LIFT 33 34 fier 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. 30. EXTERNAL LOUDSPEAKER JACKS: Connects the ST-100A to external loudspeakers such as the LG-412V or LG-412S with a 4 Ohm or 8 Ohm load. 31. 16 OHM LOUDSPEAKER JACK: Connects loudspeakers(s) that require a 16 Ohm load. 32. GROUND / LIFT SWITCH: Removes ground from the circuit 29 30 31 32 to eliminate 60-cycle hum. 33. 3-SETTING RECTIFIER SWITCH: SOLID-STATE ­ Gives tighest 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. 34. AC INLET & FUSE HOLDER: Connects AC powercord as well as contains primary fuse. 33 34 5 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. 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. Limited Warranty WARRANTY INFORMATION This Limited Warranty is effective as of January 1, 2002. Any warranty claim on B-52 products purchased before this date may be subject to monetary charges. Warranty valid ONLY to original purchaser with PROOF OF PURCHASE. 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. 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 coverahe 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.