Peavey AlphaBass User's Manual
Contents
1. PWRAMP PREAMP swiTcH TUBE POWER N OUT Leal wE STAGE V RETURN 20 A GRAPHIC EO BALANCED UNE DIRECT OUT our POWER AMPLIFIER SECTION 6 6L6GC s with 12AT7 drive and 12AX7 predriver RATED POWER amp LOAD 160W RMS into 4 or 2 ohms POWER CLIPPING Typically 5 THD 1 kHz 120V AC line 170W RMS into 4 ohms 185W RMS into 2 ohms Bias must be reduced to measure FREQUENCY RESPONSE 40 1 dB 40 Hz to 10 kHz 140 watts into 4 onms HUM amp NOISE Greater than 95 dB below the rated power POWER CONSUMPTION 550 watts 50 60 Hz 120V AC PREAMP SECTION 2 12AX7 s THE FOLLOWING SPECS ARE MEASURED 1 kHz WITH THE CONTROLS PRESET AS FOLLOWS Push Bright Off Out Push Graphic On In Low amp High 10 Mid Q0 Post Gain 10 Graphic EQ 003 Nominal levels are with normal gain 5 Minimum levels are with normal gain 10 RARE SPECIFICATIONS PREAMP HIGH GAIN INPUT Impedance Very high Z 1M ohms Nominal Input Level 16 BV 150 mV RMS Minimum Input Level 44 dBV 6 mV RMS Meximum Input Level 0 dBV IV RMS PREAMP LOW GAIN INPUT Impedance High Z 44K ohms Nominal Input Level 10 JBV 300 mV RMS Minimum Input Level 38 dBV 12 mV RMS Maximum Input Level 8 dBV 2V AMS EFFECTS SEND Load Impedanco 20K ohms or greater Nominal Output Level 10 dBV 0 3V RMS EFFECTS RETURN Impedance Very high Z 470K ohms Designed Input Level 10 dBV 0 3V AMS Switching jack pro2. YEAR LIMITED WARRANTY REMEDY PEAVEY ELECTRONICS CORPORATION PEAVEY warrants this product EXCEPT for covers foots witches patcheords tubes and meters tobe free rom defects in material landworkmansh plora per odot one 1 year from date of purchase PROVIDED however that hile warranty feoxtondad only to the original real purchaserandissubject tothe Condit one exclusons and limitations hereinafter sel fort PEAVEY 90 DAY LIMITED WARRANTY ON TUBES AND METERS filis product contains tubes or meters Peavey warrants the tubes or motors contsinacin the product to bo trao from defects in mater land workmanship foraperiodo ninety 90 days trom dato of purchase PROVIDED however that this limited warranty is extended only 10 Ih original retai purchaser and is als subject to hb conditions exclusions and Timittions hereinater set tori CONDITIONS EXCLUSIONS AND LIMITATIONS OF LIMITED WARRANTIES Theee Imitod warranties shal be void and of no effect f a The iret purchase of the products fr the purpooo ot resale or b The orginal retail purchase s not made ftom an AUTHOR ZED PEAVEY DEALER or The product has bon damaged by accident or unreasonable use neglect improper service or maintenance or other causes not arising cut of defects in motera or workmanship or a Tho serial number sifixed to the product is altered defaced or removed In me event of a cet in material ancor workmanenig covored by hi limited warranty Peavey will a I
3. EGISTRATION CARD 1 Mall the completed WARRANTY REGISTRATION CARO t PEAVEY ELECTRONICS CORPORATION POST OFFICE BOX 2095 MERIDIAN MISSISSIPPI 39302 2898 a Keep the PROOF OF PURCHASE In the event warranty service is requires during the warranty period you will need this document There will be no Identification card legua by Peavoy Elcetronics Corporation 2 IMPORTANCE OF WARRANTY REGISTRATION CARDS AND NOTIFICATION OF CHANGES OF ADDRESS 3 Completion ane mailing of WARRANTY REGISTRATION CARDS Should notificat an become necessary forany condition thet may require correction the REGISTRATION GARD wili hel ensure that you are contacted and properly notified b Notice af address changes t you move from the address shown on the WARRANTY REGISTRATION GARD you should natity Peavey ofthe change of address so as io facilitato your receipt any bulletins or other forms of notification which may become necessary in connection with any condition That may require dissemination ot information or correction 3 You may contact Peavey directly by telephoning 801 62 6965 4 Please have the Peavey product name and serial number available when communicating with Peavoy Customor Sonics no stendionsnineogeaingrswcbonsanconte Sati sin swima g oct Wer casement NO gt 7 Toga ath prope wna nal nant Fired bksgerst evello paed ma buin encore TERS one dolo or abet Fes posing dd Ro pe eri SES Lese nae ott coats MU di MF ey 14 Cara so
4. NG BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE PROVIDED HOWEVER THAT IF THE OTHER TERMS AND CONDITIONS NECESSARY TO THE EXISTENCE OF THE EXPRESS LIMITED WARRANTIES AS HEREINABOVE STATED HAVE BEEN COMPLIED WITH IMPLIED WARRANTIES ARE NOT DISCLAIMED DURING THE APPLICABLE ONE YEAR OR NINETY DAY PERIOD FROM DATE OF PURCHASE OF THIS PRODUCT SOME STATES DO NOT ALLOWLIMITATION ON HOWLONG AN IMPLIED WARRANTY LASTS OR THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATIONS OR EXCLUSIONS MAY NOT APPLY TO YOU THESE LIMITED WARRANTIES GIVE YOU SPECIFIC LEGAL FIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH MAY VARY FROM STATE TO STATE THESE LIMITED WARRANTIES ARE THE ONLY EXPRESS WARRANTIES ON THIS PRODUCT AND NO OTHER STATEMENT REPRESENTATION WARRANTY OR AGREEMENT SY ANY PERSON SHALL BE VALID OR BINDING UPON PEAVEY Inthe event of any modif cation or disclaimer of exprass orimplid warranties or any limitation of remedies containedherein conflicts with applicable law then such modification disclaimer or limitation as tne case may be shall ho deemed to be media to the extent necessary 10 compiy with such law Your romodios for broach of these warranties ere limited to those remedies provided herein and Peavey Electronics Corporation gives this limited warranty only th respect 10 equipment purchased inthe United States of America INSTRUCTIONS WARRANTY R
5. OWNERS MANUAL INS ALPHABASS WARNING TO PREVENT ELECTRICAL SHOCK OR FIRE HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE BEFORE USING THIS APPLIANCE READ THE OPERATING GUIDE FOR FURTHER WARNINGS Front Panel AlphaBASS HIGH ENERGY TUBE BASS AMPLIFIER HIGH LOW PRI POWER Post E HIGH SEND RET 40 180 180 4b 040 Tan ESE SK 1k e E eO OO A STANDBY HIGH GAIN INPUT 1 Used for most electric guitars It is 6 dB louder than the Low Gain input LOW GAIN INPUT 2 Provided for instruments that have exiremely high outputs which can result in overdriving distorting the High Gain input If both inputs are used simultaneously the output levels are the same both are Low Gain PRE GAIN 3 Controls the input volume level of the channel BRIGHT SWITCH 4 Provides a preset boost 8 dB to treble frequencies To activate depress the switch to its in position GRAPHIC SELECT 5 The in position of this switch routes the instrument signal through the S band equalizer The out position removes the graphic equalizer from the signal path POST GAIN 6 Controls the overall volume level of the amplifier The final level adjustment should be made after the desired sound has been achieved 3 BAND PASSIVE EQ 7 Passive tone controls that regulate the low mic and high frequencies raspoctively EFFECTS SEND 8 Output for supplying signals to extern
6. al effects or signal processing equipment EFFECTS RETURN 9 Input for returning signals from external effects or signal processing equipment GRAPHIC EQUALIZER 10 This 9 band one octave equalizer provides 12 dB of boost or cut at each center frequency POWER SWITCH 11 Depress the switch to the On position The red pilot light LED will illuminate indicating power is being suppliedto the unit STANDBY SWITCH 12 Allows amp to be placed in standby or active mode In standby mode the tubes remain hot but the ampl operational 13 18 19 HIGH ENERGY TUBE AIphaBASS BASS AMPLIFIER SNE WARNING is 5 iti JF amp mn o ai 16 17 22 23 GROUND SWITCH 13 Three position rocker type switch which in most applications should be operated in its center or zero position There may be some situations when audible hum and or noise will come from the loudspeaker If this situation arises position the ground switch to either positive or negative or or until the noise is minimized NOTE Should the noise problem continue consult your Authorized Peavey Dealer the Peavey Factory or a qualified service technician THE GROUND SWITCH IS NOT FUNCTIONAL ON 220 240 VOLT MODELS LINE CORD 120V products only 14 For your safety we have incorporated a 3 wire line mains cable with proper grounding facilities It is not advisable to remove the ground pin under any circumstances If it is nece
7. ding to type of guitar type and gauges of strings type ol pickup and even type of pick Personal taste playing style and type of music greatly contribute to dosired tonality JF AlphaBASS HIGH ENERGY TUBE standay Power Amp Speaker System i t eeoj s Low Level Effects Device HIGH ENERGY TUBE AIphaBASS sass AMPLIFIER To Speaker Enclosure 2 ohms min a Footswitch Console NOTE System Should Not Be Operated Without Speaker Connected THIS LIMITED WARRANTY VALID ONLY WHEN PURCHASED AND REGISTERED IN THE UNITED STATES OR CANADA ALL EXPORTED PRODUCTS ARE SUBJECT TO WARRANTY AND SERVICES TO BE SPECIFIED AND PROVIDED BY THE AUTHORIZED DISTRIBUTOR FOR EACH COUNTRY Cas clauses de garantie ne sont valables qu aux Elats Unls et au Canada Dans tous es autres pays les clauses de garantie ete maintenance sont lxces parle dstributeur rational saquree par lul selon la legislation on viguour Diese Garantie st nur in den USA and Kanada gullig Alle Export Produkte sind der Garantio una dem Sarice des Importeurs des joweligen Landes unterworten Esta garantia os valida solamente cuando el producto es comprado en E U continentales o en Canada Todos os productos que sean comprados en elextranero estan sujetos alos garantias y servicio que cado distribuidor autorizado delormino y ofrezca en los diferentes paises ONE
8. ies and the other terms and conditions expressed herein heva been complied with Peavey will provide the necessary warranty serica o repair or replace the product and will etum i FREIGHT COLLECT to you the purchaser Peavey s liability o the purchaser for damages from any cause whatsoever and regardless of the form of sion including nogliganco is imita to tho actual damages up to ne eater at 509 00 or an amountoqualto the purchase price ofthe procuct that caused the damage or hats Ihe subject of or s directly related to the cause af action Such purchase Brice wil be that in effect far the specific produet when the cause of action arose Ths limitation of liability wil not apply to ciaims for personal injury cr damage 1o real property or angie persona property allegedly caused oy Peavey snegl gence Peavey doesnot assume ability or personal injury or property damage arising out of orcaubad by a non Poovey biteration or attachment nor does Peavey assumo any responsibly for damage to Interconnected non Puavey equipment thet may result from the normal functioning and maintenance of the Peavey equipment UNDER NO CIRCUMSTANCES WILL PEAVEY BE LIABLE FOR ANY LOST PROFITS LOST SAVINGS ANY INCIDENTAL DAMAGES OR ANY CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT EVEN IF PEAVEY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES THESE LIMITED WARRANTIES ARE IN LIEU OF ANY AND ALL WARRANTIES EXPRESS OF IMPLIED INCLUDI
9. nthe case o lubes or meters replace the detective componen winou charge 5 In oinar covered cases La cases Involving anything cther than covers footewitches patcheor s tubes or meters repair the detect in material or workmanship or replace ne product at Peavey option and provided however al in any case ll costs of shipping if necessary are paid by you the purchaser THE WARRANTY REGISTRATION CARD SHOULD BE ACCURATELY COMPLETED AND MAILED TO AND RECEIVED BY PEAVEY WITHIN FOURTEEN 14 DAYS FROMTHE DATE OF YOUR PURCHASE In order to obtain sonics under these warranties you must a Bring the detecte Item to any AUTHORIZED PEAVEY DEALER or AUTHORIZED PEAVEY SERVICE CENTER ard present therewith the ORIGINAL PROOF OF PURCHASE supplied to you by the AUTHORIZED PEAVEY DEALER in connection with your puronete from him of this produc Ifthe DEALER or SERVICE CENTER is unable 10 provide the necessary warranty service you wil be directed ta the nearest other PEAVEY AUTHORIZED DEALER or AUTHORIZED PEAVEY SERVICE CENTER wnich can provide such service or b Ship the dofcetivo om propa to PEAVEY ELECTRONICS CORPORATION International Service Genter Highway 80 East MERIDIAN MS 30301 including therewith a complete detalle description of the problem together with a legible copy of the orginal PROOF OF PURCHASE and a complete return eadress Upon Peavay s receipt of Inese items If the defect is remedial under these limited warrant
10. ssary to use the equipment without proper grounding facilities suitable grounding adaptors should be used Less noise and greatly reduced shock hazard exists when the unit is operated with the proper grounded receptacles FUSE 15 The fuse is located within the cap of the fusehoider If the fuse should fail IT MUST BE REPLACED WITH THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PREVENT VOIDING THE WARRANTY If the amp repeatedly blows fuses it should be taken to a qualified service center for repair WARNING THE FUSE SHOULD ONLY BE REPLACED WHEN THE POWER CORD HAS BEEN DISCONNECTED FROM ITS POWER SOURCE HUM BALANCE 16 A control to minimize hum To adjust first make sure that nothing is plugged into the amp but the speaker cabinet Turn the unit on and set the Pre Gain Pump and Post Gain controls at 7 While listening to the speaker closely gradually rotate the Hum Balance control using a screwdriver until hum is at a minimum This procedure is required periodically Reset Hum Balance after tube change SPEAKER OUTPUT 17 Provided fcr connection of external spoaker enclosures Minimum total impedance is 2 ohms A 4 ohm enclosure should be patched into the 4 ohm jack A 2 ohm speaker enclosure combination may be patched into the 2 ohm jack Two 4 ohm enclosures may be used by patching one enclosure into the 4 ohm jack and the other into the 2 ohm jack for 2 ohm operation POWER AMP IN 18 Provided for patching e
11. ul bo takan so mat oct da not a ono Sareea edite tn gite aot eles or any ela potat 15 Tes unl shoud ba checked by e quand secs Fiume Pri cias Bierce sui e Sone dy y ad Sees Features and specifications subject to change without notice Peavey Electronics Corporation 711 A Street Meridian MS 39302 2698 U S A 601 483 6365 Telex 504115 Fax 484 4278 91989 Printed in the U S A 80300980 2 89
12. viding Effects Send to Effects Return connection when not used PREAMP OUTPUT Load Impedance 1K ohms or greater LINE OUTPUT Load Impedance 20K ohms or greater Maximum Output Level 410 dBV 3V AMS DIRECT OUTPUT Load Impadance 600 ohms or greater Nominal Output Level 6 dBV 500 mV RMS Transformer balanced XLR connector SYSTEM HUM amp NOISE 2 NOMINAL INPUT LEVEL 20 Hz to 20 kHz unweighted 72 dB below rated power EQUALIZATION Normal Channel Only Special Low Mid amp Hich passive type EO Footswitchable 7 brand Graphic 12 dB 80 120 180 340 680 1 3K 2 6K 5K and 10 kHz Peak Notch Push Bright 10 dB 2 kHz EXTERNAL FOOTSWITCH FUNCTION Graphic EQ Defeat when selected with button Nominal Output Level 10 dBV 3V RMS POWER AMP INPUT Impedance High Z 22K ohms Designed Input Level 10 dBV 3V RMS Switching jack providing Preamp Output to Power Amp Input connection when not used TONE SETTING CHART E AIphaBASS ADJUST HIGH ENERGY TUBE TO TASTE BASS AMPLIFIER INPUTS COUNTRY CLEAN GA AlphaBASS HIGH ENERGY TUBE BASS AMPLIFIER ROCK MILD Gd AlphaBASS ADJUST HIGH ENERGY TUBE TO TASTE BASS AMPLIFIER INPUTS post HGH SEND RET GAOGCe MICH Low eect bo 120 10 940 voo rak Rak SX Tor E m ROCK CLEAN Tone settings given are general and will vary accor
13. xternal signals direct to the internal power amplifier A signal of 3 volts is necessary to drive the power amplifier to full power PREAMP OUT 18 The preamp output may be used to route the preamp signal to outboard power amplifiers crossovers ete This output provides a 3 volt signal level to drive other tube power amplifiers and should not be used as an effects send to signal processors or effects devices LINE OUTPUT 20 The line output provides a signal with level control to drive other power amplitier slave speaker systems See line output level LINE OUTPUT LEVEL 21 Controls the signal level at the line output jack This contro may be used as a balance control when slave power amp speaker systems are driven from the line output DIRECT OUTPUT 22 Provides 600 ohm transformer balanced signal to be used as direct patch into mixing consoles tape recorders etc The signal et this point has been frequency compensated for low noise operation REMOTE SWITCH JACK 23 Provided for the connection of the supplied remote footswitch Footswitch is used to select or bypass the 9 band graphic equalizer section NOTE Graphic select switch on the front panel must be in the In position in order to allow graphic selection with the remote footswitch TONE INPUT TUBE Tune m STAGE STAGE SEND Low mo wish ene pos PUSH GRAPHIC EFFECTS wel orcorswren m
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