ETI Sound Systems, INC AT-100 Stereo Amplifier User Manual
Contents
1. B 52 PROFESSIONAL 3383 Gage Avenue Huntington Park CA 90255 Phone 323 277 4100 Fax 323 277 4108 National 1 800 344 4384 Internet www B 52GUITAR com E mail info B 52PRO com 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 8 differ than those described in our literature All features specifications and prices are therefore subject to change without notice 100 WATT ALL TUBE AMPLIFIER IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions Heed all warnings DO NOT turn on the AT 100 without the loudspeaker connected Do not use the AT 100 near water Be extra cautious when moving the AT 100 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 yo2. OVERDRIVE CHANNEL CONTOUR Varies the critical midrange tone in the overdrive channels Adjusts from classic midrange punch to scooped metal madness OVERDRIVE CHANNEL GAIN SWITCH 1 Activates the CONTOUR control for Gain 1 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 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 LOUDSPEAKER OUTPUTS 20 21 22 23 24 24 TRI MODE RECTIFIER control adds body and punch to your sound 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 OVERDRIVE CHANNEL GAIN 2 Adjusts the amount of distortion in Gain 1 Activated LED indicates in use OVERDRIVE CHANNEL GAIN SWITCH Push switch Selects between Gain 1 and Gain 2 controls Activated LED lights indicate which channel is currently use OVERDRIVE CHANNEL GAIN 1 Adjusts the amount of distortion in Gain 1 Activated LED indicates in use INPUT CONNECTOR LOW Connects your guitar to the AT 100 B 52 recommends that you use a cable that is screened or shielded INPUT CONNECTOR HIGH Plug your
3. 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 modifica tions of the amplifier which has not been authorized or approved by E T l This warranty is in lieu of all other expressed warranties If this product is defective in materials or workmanship as warranted above your sole reme dy 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 prod uct NEVER RETURN THE ENTIRE CABINET JUST THE DEFECTIVE COM PONENT 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 direct
4. 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 and Low Input Jacks Overdrive channel with Gain1 Gain2 assignable Contour three band EQ and level controls Clean Channel with Level control 3 band EQ and Bright switch Master section with Volume Low Resonance and Reverb controls Rugged footswitch for Channel Select Gain Select Reverb on off and Effects Loop on off Push switches for channel gain select and Contour assign Effects send and return with level controls Line out with level control Two speaker output jacks selector switch for 4 8 or 16 ohms 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 x 6L6 6 x 12AX7 1 x 12AT7 1 x 5AR4 Power Tubes Preamp Tubes Reverb Tube Rectifier Tube HEED ALL WARNINGS WARNING To reduce the risk or fire or electrical shock do not expose this equipment to rain or moisture AT 100 100 WATT ALL TUBE LEAD GUITAR AMPLIFIER Thank you for choosing the B 52 AT 100 amplifier This g
5. 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 pro cedures and service repair or modifications of the component which has not been authorized or approved by E T This warranty is in lieu of all other expressed warranties If this product is defective in materials or workman ship 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 LIFE TIME 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 WARRAN TY IS OFFERED ON HIGH FREQUENCY DEVICES IN B 52 SYSTEMS WITH A BI AMP SWITCH OPTION The lifetime warranty on high frequen cy devices does not cover service or parts to repair damage caused by acci dent 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 l This warranty is in lieu of all other expressed warranties If this product is defective in materials or workman ship as warranted above your sole remedy shall be repair or replacement as provided above GUITAR AMPLI
6. Allows the AT 100 to remain of the amplifier Turning the control clockwise adds rich low end turned ON for limited periods of inactivity without the risk of 6 MASTER VOLUME Controls the overall signal level of the damaging over heating the amplifier tubes When the Standby AT 100 To increase the overall signal and or volume rotate switch is in the STANDBY position the AT 100 is in a non the control clockwise The Master volume control allows you to operational setting When in Standby the Sovtek tubes remain preset the output levels of both the Clean and Overdrive hot and ready for use This bypasses the time required for the Channels tubes to warm up before use When the Standby switch is in the 7 CLEAN CHANNEL VOLUME Controls the overall signal level ON position the AT 100 is operational and should not be left of the clean channel Adjusting the volume control enables you to inactive DO NOT turn on the AT 100 or have the Standby produce sparkling clean sounds to crunchy dirty blues Turned switch set to ON without it connected to a loudspeaker all the way to the left you will experience clean sounds A setting 3 PILOT JEWEL Power on indicator all the way to the right will produce moderate levels of distortion 4 MASTER REVERB CONTROL Adjusts the amount of reverb 8 CLEAN CHANNEL BRIGHT Adds high end sparkle produced by the amplifier To increase the amount of reverb turn 9 CLEAN CHANNEL TREBLE Adjusts the amount of high cloc
7. FIERS E T I Sound Systems Inc warrants the original pur chaser 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 serv ice 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 author ized or approved by E T I This warranty is in lieu of all other expressed war ranties 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 l Sound Systems Inc warrants the orig inal 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 This Limited Warranty is effective as of January 1 2002 Any warranty claim on B 52 prod ucts purchased before this date may be subject to monetary charges Warranty valid ONLY to original
8. akers including the AT 100 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 rec ommended Caution should be taken to avoid extended SPL is excess of 90 dBA AMPLIFIER MODULE PRECAUTIONS Do not attempt to service the AT 100 by yourself Refer all servicing to a B 52 Stealth Series Authorized dealer Service is required when the AT 100 has had liquid spilled on or inside the unit has been damaged in any way has been exposed to rain or moisture does not oper ate 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 AT 100 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 AT 100 amplifier should be cleaned only with a dry cloth O AT 100 FRONT PANEL FEATURES amp DESCRIPTIONS MASTER CLEAN ON REVERB LOW RES VOLUME VOLUME o TREBLE MIDDLE a POWER STANDBY 5 REVERB LOWRES VOLUME VOLUME TREBLE MIDDLE 0 46 1 POWER ON OFF SWITCH Turns the AT 100 on and off MASTER LOW RESONANCE Controls the overall resonance 2 STANDBY ON OFF SWITCH
9. guitar into either one Use the one that sounds best to you Always use a high quality shielded instrument cable se 1001 50 Ha 450 W 170 V 60 Hz 450W B e 130 V 50 Hr 450W MI ee 240 1 50 Hz 450 W IMPEDANCE 100 WATTS RMS TUBES SELECT SOLID STATE A TUBE ABe 4 OHMS 8 OHMS 16 OHMS 1A FAST BLOW i PARALLEL JACKS operate into any 4 ohm 8 ohm or 16 ohm cabinets s NOTE Always set the switch to match the impedance of your cabinet s LOUDSPEAKER OUTPUTS Connects the AT 100 to the speaker cabinets such as the AT 412A or AT 412B NOTE Always be sure the speakers are plugged in before attempting to operate the amplifier Always use a high quality heavy duty unshielded speaker cable Severe damage can occur from failing to connect the speakers and properly setting the impedance selector switch GROUND LIFT SWITCH Removes ground from the circuit to eliminate 60 cycle hum 38 39 E _5AS8 100 120V MW E 2 5458 220 230 240V MI 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 POWER TUBE FUSE Power tubes failure fuse AC INLET amp PRIMARY FUSE Connects AC powercord and houses primary fuse Always use correct value as indicated on amp panel chart 5 WARRANTY INFORMATION Limited Warranty Thank you for choosing a B 52 s
10. kwise frequency boost or cut as desired in the clean channel Treble WARNING SHOCK HAZARD adds brightness to your tone Turning this control clockwise will _ add brilliance to your sound Turning the control counter To reduce the risk of fire or electrical shock do not expose this unit to rain clockwise softens the tone or moisture Do not operate your AT 100 near a pool or other standing 10 CLEAN CHANNEL MIDDLE Adjusts the amount of mid range water Make sure all blades on the polarized power plug are fully inserted frequencies as desired in the clean channel Turning the middle into the power source Ensure the powercord is not stretched pinched or control clockwise will increase the amount of warmth in your otherwise abused Ensure the power cord is routed to avoid foot traffic tone Counterclockwise settings create a more pristine acoustic Your AT 100 amplifier should be cleaned only with a dry cloth kind of sound AT 100 Rear Panel Features amp Descriptions LINE OUT CAUTION EFFECTS pa A h RISK OF ELECTRIC SHOCK LEVEL LEVEL CAUTION 70 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 coil Le C S No Fallo Fa 26 EFFECTS SEND JACK Connects to the AT 100 to the input between Gain 1 and Gain 2 in the overdrive Channel Also off an effec
11. ly 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 l 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
12. ound 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 B 52 CABINETS E T l 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 nor mal amp 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 rem edy 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 origi nal retail sales date This 5 five year
13. specific legal rights and you may also have other rights which may vary from state to state 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 accor dance 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 CD EXPERIENCE THE POWER xs www B 52GUITAR com
14. ts unit switches between clean and overdrive channel 27 EFFECTS SEND LEVEL Controls the sending level output to 31 FOOTSWITCH EFFECTS REVERB Connects footswitch to an effects unit turn the reverb on off and the effects loop on off 28 EFFECTS RETURN LEVEL Controls the input capacity of 32 LINE OUT JACK Connects the AT 100 to an external line the returning signal from an effects unit level device such as a mixing board 29 EFFECTS RETURN JACK Connects the AT 100 to the 33 LINE OUT LEVEL CONTROL Controls the output capacity of output of an effects unit the Line Out Level EN 30 FOOTSWITCH GAIN AND CHANNEL SWITCH Switch 34 IMPEDANCE SELECTOR SWITCH Allows the AT 100 to safely OVERDRIVE TREBLE MI DDLE BASS GAIN 2 GAIN SELECT GAIN 1 DIERO 14 15 49 17 AD 9 QO QD 2303 e CLEAN CHANNEL BASS Adjusts the amount of low LEVEL 12 13 14 15 16 17 18 19 35 36 frequency boost or cut as desired Adding bass will increase the depth and fullness of your sound CHANNEL SELECT Push switch selects between the clean and overdrive channels Activated LED lights indicate which channel is in use OVERDRIVE VOLUME 2 Controls the overall volume of the high gain overdrive channel OVERDRIVE VOLUME 1 Controls the overall volume of the medium gain overdrive channel OVERDRIVE CHANNEL GAIN SWITCH 2 Activates the CONTOUR control for Gain 2
15. uitar 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 AT 100 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 AT 100 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 AT Series Speaker Cabinets Recommended for use with AT 100 AT 412A 480 Watt RMS speaker cabinet Slant AT 412B 480 Watt RMS speaker cabinet Straight The B 52 AT 412A and AT 412B 4x12 slant and straight cabi nets are a perfect complement to the AT 100 all tube amplifier They offer awesome tone and incredible projection With four custom built 120 watt 12 speakers these cabinets provide crystal clear highs and heavy distortion with classic breakup AT 412A FEATURES AT 412B 4 x 120 watt custom built heavy duty speakers Cloth finished front Rear porting for extended low frequency response Metal handles rubber feet and metal corners Detachable casters for easy transport Authentic black vinyl finish Baltic Birch Construction Mono Stereo Switchable HEARING DAMAGE PROLONGED EXPOSURE TO EXCESSIVE SPL B 52 Stealth Series amplifiers and spe
16. ur safety lf the provided plug does nat 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 AT 100 amplifier Only use attachments accessories specified by B 52 Professional Unplug the AT 100 during lightning storms and when not in use Refer all servicing to qualified personnel Servicing is required when the AT 100 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 AT 100 to rain or moisture Moisture can damage the AT 100 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 AT 100 Never remove the front or rear panels of the AT 100 while it is connected to an electrical outlet INSIDE THIS INSTRUCTION MANUAL Important Safety Instructions A 2 Important Information 11 3 AT 100 Controls en ee 4 5 Set up 8 Warranty Information 5 7 Contact Information 1111 1 8 AT 100 FEATURES This B 52 Stealth Series AT 100 has a 100 pure all
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