Gallien-Krueger NEO SERIES NEO 1001/212 User's Manual
Contents
1. The internal speakers equal an 8 Ohm load No damage will result from operating the amplifier with the speakers disconnected 3 Speakon Outputs High current twist lock Speakon output connectors Pins 1 and 1 send a fullrange signal from the Main Woofer amplifier Pins 2 and 2 send a signal 5kHz and above from the Tweeter amplifier Use a four conductor Speakon cable when connected to a GK Horn Bi Amp compatible speaker cabinet Use a standard two conductor Speakon cable when connected to a non GK cabinet or if you re using a Speakon to 4 adapter See Horn Bi Amp System on page 8 for more information Caution Do not connect a Speakon cable labeled Bridge Mode to the Speakon Outputs This may result in damage to the amplifier A D T 3 Y o 2 TI D T n JR N Q q gt N q on am Seen o L Neo Series Bass Combo Amplifier Horn Bi Amp System Your amplifier incorporates GK s unique Horn Bi Amp System This feature is automatically engaged when you connect to a GK HBA compatible enclosure giving you completely independent control of the tweeter and woofer signals Now you can push the woofers to the max while the tweeter remains clean crisp and free of clipping distortion A smooth tight tone is easily dialed in by adjusting the Tweeter and Woofer Master controls on the amplifier s front panel TWEETER gt HI CUT WOOFER MASTER HI2. lt GALLIEN KRUEGER lt GAELIEN KRUEGER rl TTT TTITIITItity o GEERSEZEEE T SMBULENZEEE JARREREK 22 ee eee A UEREEE 2825 E58 REME 222 6S8Ee Merl ee titi ii tl SEES SE SER Seah 2S2e 3A5n See EBee _ 2S A SRS SS SSSA meiyitirtiii iiti Gace cil iritiryititiiyr JABEEESSRSEBDNAURR IIT IIIIITIII III I SSS eee RoE AR cele N 1 ieinintetel 1 Lt aaii Tir ic isc iy itty iit NER REE BBE BREN MERE SSEERRRSEEaE NODS ESSER OOC UM Re I EELT NNDB REBEROODAKA TINS SE RSREREBAAe RASS EERE NOS S88227N 20888 ZENON REGEM s Manual J NSEEBERESS74 ZAE OSSES 2527148 x GALLIEN KRUEGER Owner ra a Neo 1001 212 Neo 700 112 C O O O O T a Neo Series Bass Combo Amplifier Congratulations Your purchase of a new Gallien Krueger amplifier is surely the result of much careful consideration on your part For our part we at Gallien Krueger are pleased that you chose us and are determined that you will be a satisfied customer In choosing GK you now own an amplifier with many unique features which will allow you to create your own distinct sound To get the most out of your new amplifier please take a few minutes to read through this manual If you are in a hurry we suggest you at least read through the Quick Start section before setting up your new rig This will help get you started and give you a few quick tips but is not a subst
3. 5KHZ SEAMLESS LO X OVER O WOOFER BOOST cross over GAIN BOOST WOOFER MASTER 480W 700W BOOST GAIN i 1 IE Horn Bi Amp Mode This mode requires a GK Horn Bi Amp compatible bass cabinet Use a properly wired four conductor Speakon cable to connect to your cabinet Set the switch on the back of your GK HBA compatible enclosure to Bi Amp In this mode the cabinet s internal crossover is bypassed Use the Woofer Main knob to control the ouput signal to the woofer and the Tweeter knob to control the ouput signal to the horn Note The 50W horn amplifier has a fixed frequency output of 5kHz and up high frequencies only It will not provide a useable signal to drive a seperate speaker cabinet GK Speakon Cable Wire Configuration 1 Woofer Amp l Woofer Amp 2 Horn Amp 2 Horn Amp i UL K 0 ji E IFE e ale 0p IFR gi f Fullrange Mode This mode is compatible with virtually any standard bass cabinet Use a two conductor Speakon cable or a 4 speaker cable to connect to your cabinet If using a GK HBA compatible enclosure set the switch on the back of the cabinet to Fullrange In this mode the cabinet s internal passive crossover is used to split the signal between the woofer and horn Use the Woofer Main knob on the front of the amplifier to control your output level The Tweeter knob is not used Note To avoid the risk of damage to the amplifier do not us
4. Canada 120 Volt 60Hz UK Australia 230 Volt 50Hz Europe 240 Volt SOHz Japan 100 Volt S0Hz Korea 220 Volt 50Hz Standard IEC Receptacle
5. VOICING p oop NN Eu M S 5 MUTE VOLUME x4 eo PREJ POST 460W 8 Ohms 700W 4 Ohms 320W 8 Ohms 480W 4 Ohms 50W 8 Ohms 75W 4 Ohms w Mono Unbalanced 0 6V Rms 1 6V Rms IM Ohm Y Mono Unbalanced 50k Ohm Y Mono Unbalanced 220 Ohm Y Mono Unbalanced 10k Ohm XLR Balanced 500 Ohms Y Mono Unbalanced x2 Neutrik Speakon x2 10dB 60Hz 6dB 10dB 250Hz 6dB 10dB 1kHz 12 17dB 7kHz 11dB 20Hz 2dB 50Hz 10dB 500Hz 3dB 7kHz 9dB 10kHz TWEETER ALWAYS CROSSED OVER TWEETER TWEETER HI CUT SEND HI WOOFER 5 KHZ SEAMLESS LO _ MASTER X OVER 4 BOOST 5 p A 700w 480W RETURN 7 ll WOOFER BOOST CROSS OVER GAIN Crossover Noise Cooling Protection Dimensions Neo 1001 212 Neo 700 112 Weight Neo 700 112 Consumption Neo 700 112 Fuse Mains Voltage Mains Connect lt GALLIEN KRUEGER Neo Series Bass Combo Amplifier Owner s Manual Part 160 0260 A1 Neo 1001 212 Neo 1001 212 1 4PHONE SPEAKON OUTPUTS Triple pole constant voltage crossover at 5kHz 90dB A weighted Variable Speed Fan Full short circuit thermal amp RF protection Stable into reactive and mismatched loads Five second muted warm up 29 9H x 20 7W x 16D 19 7H x 20 7W x 16D 80 5lbs 54 5lbs 1476W full 317W average 994W full 230W average 100V 120V TISA 220V 240V TIOA USA
6. button Lock N Roll Transport System The Lock N Roll transport system is designed for quick and easy rolling of the combo on flat surfaces such as carpet flooring pavement etc To engage the lock and roll handle slide the locking latch below the handle to the right and lift the handle up until it stops Let go of the locking latch and the handle will lock into place Tilt the combo back and you re ready to go The 3 wheels on the bottom of the cabinet will automatically engage and allow for smooth rolling Note Never lift the amplifier by the Lock N Roll handle It is designed to be used with the wheels on the ground a 2 5e 0 oP Q m Neo Series Bass Combo Amplifier ICING FILTE TIVE EQUALIZATION BI AMP OUTPUT VOLUME CONTOUR PRESENCE ae HI MID LOW MID BASS BOOST pe WOOFER V aD T 49 LL eD C 49 A ma a O Son LL Front Panel Features 1 Balanced Direct Out An electronically balanced low impedance output that you can run to your P A system via a mic cable 2 Ground Lift Used to eliminate hum when connnecting to equipment that is running on a different ground system 3 Pre Post EQ Button Sets the Direct Out signal before or after the EQ 4 Direct Out Level Controls the output level of the Direct Out 5 Input A standard 4 input jack to plug in active or passive basses using an instrument shielded cable 6 14dB Pad amp Clip LE
7. the product will void your warranty If liquid enters the unit or any metal object such as a paper clip accidentally falls inside the enclosure disconnect the unit from the AC power source immediately and consult an authorized service station Setup To insure proper operation and to avoid potential safety hazards place the unit on a firm level surface Do not plug or unplug the instrument or speaker cable while the amplifier power is on Heat amp Ventilation For proper ventilation make sure there is at least 8 inches of clearance on top sides front and rear ofthe unit Avoid using in extremely hot or cold locations and areas that are exposed to direct sunlight or near heating equipment Avoid using in moist or high humidity areas Cleaning amp Maintenance Clean only with a dry cloth Never use benzene thinner alcohol or other volatile cleaning agents Do not use abrasive cleaners as they may damage the finish of metal parts Avoid spraying insecticides near the unit No other maintenance should be necessary Traveling If Traveling with the unit frequently we recommend a road case or cover to protect it from scratches and road wear Packaging The carton and packing materials used in shipping your new amplifier were specifically designed to cushion it from the shocks and vibration that occur during transport We suggest that you save the carton and packing materials for use in shipping in the event you move or t
8. your tone enabling the amplifier to accommodate a wide variety of playing styles with minimal fuss 4 5 String Bass The 4 5 String filter extends the low frequency range of the amplifier to accomodate the extra low range of the B string on 5 and 6 string bass guitars 4 string players may also find desirable results with this filter as well Contour The Contour is based on the same contour circuit as the 800RB but adds a variable control for precise tone shaping With the control at zero the response is essentially flat as in no shaping As the contour 1s increased it scoops out the midrange while subtly emphasizing the lows and highs Additionally it compensates to keep the overall volume level constant With it s variable control the Contour will accomodate everyone from the smooth finger style player to the aggressive slap player Presence The Presence control adds extra sparkle on the high end for better clarity and openness in your tone This is particularly useful when soloing or playing chords The Valve Effect Boost Your GK amplifier incorporates what we call the Valve Effect or G I V E Gate Induced Valve Effect technology We use field effect devices with the gate biased in such a way that emphasizes the optimum harmonic content of the signal This is controlled by the Boost knob Raising the Boost while lowering the Master will add more growl while keeping the sound level relatively consistent
9. D Reduces the input signal from your bass Press in if the Clip LED lights up excessively 7 Tuning Mute Button Mutes all output signals except for the Tuner output LED turns on when Tuning Mute is engaged 8 Volume Stage Sets the pre amp gain after the input 9 4 5 String Bass When engaged this extends the low frequency range O OOO OOO OOO OO YY O OOH CO OC RETURN TUNER 10 Contour Cuts the mid range frequencies while boosting lows amp highs 11 Presence Adds edge and definition to higher frequencies 12 Treble Active shelving type control which boosts and cuts the high frequencies 13 High Mid Active bandpass type control which boosts and cuts at about 1kHz 14 Low Mid Active bandpass type control which boosts and cuts at about 250Hz 15 Bass Active shelving type control which boosts and cuts the low frequencies 16 Boost A post EQ gain stage using GK s exclusive Valve Effect technology which adds growl as it is turned up 17 Tweeter Master volume control for the 50 watt horn amp Output signal is 5kHz and above 18 Tweeter Hi Cut Cuts frequencies above 10kHz which is useful for reducing hiss from the tweeter 19 Woofer Master Master volume control for the woofer Main amplifier Output signal is full range Neo Series Bass Combo Amplifier 20 Woofer Hi Cut Cuts frequencies above 5kHz from the Woofer output 21 Effects Sen
10. ER Set 9 12 o clock Set 12 3 o clock Front pickup recommended BI AMP OUTPUT BOOST pale ee POWER PROTECT T MAST E HI CUT SEND RETURN TUNER Set 9 12 o clock Set 12 3 o clock Both pickups recommended BI AMP OUTPUT BOOST TEETER we POWER PROTECT HI CUT er HI CUT SEND RETURN TUNER Set 9 12 o clock Set 12 3 o clock V A 3 i D V D n z Q T x b io 5 H Neo Series Bass Combo Amplifier Tech Talk Your GK amplifier is designed to be flexible and user friendly for maximum performance This is accomplished through these important features High Current Capability When a power amplifier is pushing a speaker cone and it needs to reproduce a high power transient like a string slap the amp must be able to deliver a high current pulse to maintain cone control Ifthe amplifier can t do this it simply cuts the transient off producing an unresponsive less out front sound Creating these high current pulses requires extra power devices four times the current required to deliver its rated power larger supply capacitors and intelligent protection logic GK is the only instrument amplifier manufacturer that goes to the trouble and expense and it is a big reason why GK amplifiers sound louder and cleaner than other brands at the same power rating Active Equalization There are a wide variety of equalizers used in instrument amplifiers today Passive equalizers are great but only allo
11. The growl is actually a small amount of even order harmonic distortion For most playing situations start with the Boost at 12 o clock Reduce for a cleaner sound or increase for more growl Neo Series Bass Combo Amplifier Horn Bi Amp Operation Bass players have always liked the growl they get from a slightly overdriven poweramp The problem is that growl sounds great through woofers but will destroy the horn tweeter In a typical fullrange system there is no way to get that growl while keeping the definition that the horn provides In GK s Horn Bi Amp system an active electronic crossover allows a fullrange signal through to the main woofer amplifier while only the high frequency portion of the signal SkHz and above is allowed through to the 50 watt Horn amplifier There are three primary benefits to this system over a traditional fullrange system e Significantly reduces the risk of blowing out the horn s diaphram e More accurate and natural sounding signal reproduction e Allows you to add as much growl to the woofer signal as you want while keeping the horn crystal clear Headroom Your GK amplifier uses a high gain low noise FET input stage with such a large dynamic range 60v p p that even basses with active electronics may not need to use the input pad The benefit to you is a cleaner signal with less his and much less overall noise Efficency The power supply of your amplifier uses a unique
12. current draw under full load conditions Connecting the amplifier to a line with specifications other than indicated above can create a safety or fire hazard and may damage the amplifier Connecting to the same circuit used by other heavy power devices such as high wattage lights may cause circuit breakers to trip Itis always a good idea to avoid using any audio equipment on the same AC circuit as equipment with motors such as air conditioners or refrigerators This will lessen the possibility of power variation and elec trical start up noise affecting your sound AC Power Cord To avoid safety hazards use only the power cord supplied with your unit Ifa replacement cord is needed make certain to use a standard IEC compliant cord Damaged power cords should be replaced immediately When setting up make certain that the AC plug is easily accessible Ifyou do not intend to use the amplifier for a considerable length of time disconnect the plug from the AC Mains Socket Earth Grounding Connection To prevent electric shock do not remove the grounding plug on the power cord or use any plug or extension cord that does not have a grounding plug pro vided Make certain that the AC outlet is prop erly grounded as well Do not use a ground lift adapter with this product Do Not Open the Amplifier Enclosure There are no user serviceable parts inside this product Opening the amplifier enclosure may present a shock hazard Modification to
13. d When used the signal path is in series meaning all of the signal goes through the Effects Loop 22 Effects Return Returns the Effects Loop signal to the signal path May also be used as a secondary input for another instrument or CD player The preamp signal is not interupted if the Send jack is not used 23 Tuner Out Parallel output comes directly off of the input stage Unaffected by the Mute button or any of the preamp functions 24 Power Protect LED The LED will be red for 5 seconds during power up then turns blue when the amp is ready Should a fault occur the amp will mute and the LED will turn red until the fault is corrected 23 Power On Off Button If you re not sure what this does you should probably not be operating electronic equipment 700W AMP PINS 1 1 Z00 W AMP WOOFER MASTER 50 W AMP ONEOR TWO 8 OHM CABINETS US PINS 2 2 C E 4 OHM CABINET pl 50W AMP TWEETER Or LR110409 ONE OR TWO 8 OHM HORNS 50W AMP ALWAYS CROSSED OVER TESTED TO SPEAKON OUTPUTS E65 CANADA UL6500 USA IEC65 EUROPE N382 Rear Panel Features 1 AC Receptacle Standard IEC Receptacle The power cord plugs in here 2 700W or 480W Amp Only 4 speaker output jacks Impedances Lower than 4 Ohms should not be used Higher impedances such as 8 Ohms 16 Ohms or No Load are acceptable One 4 Ohm one 8 Ohm or two 8 Ohm cabinets are okay One 4 Ohm and one 8 Ohm together is not recommended
14. d by a different ground system The Post EQ button allows you to set the Direct Out signal to either Pre or Post EQ Pre EQ With the Post EQ button out Pre the Direct Out signal is fed straight from the input stage and is only effected by the 14dB Pad Tuning Mute and the Direct Out Level control Adjustments to the voicing filters or EQ section will have no effect on the Direct Out signal Post EQ With the Post EQ button out Post any changes you make in the voicing filters EQ section Effects Loop if used and the Boost will effect the Direct Out signal going to the mixing console A Final Word You should now have a thorough understanding of how your new GK amplifier works and the advantages it offers in helping to get YOUR sound If you have any questions or comments please visit our website at www gallien krueger com or send us an email to info gallien com We wish you the best of times on your musical journey wherever it may lead you D O D Block Diagram INPUT DIRECT OUT lt nd Pq LEVEL Output Power Main Amp Neo 1001 212 Neo 700 112 Horn Amp Audio Inputs Instrument Input Level w 14dB pad Impedance Return Input Impedance Audio Outputs Send Output Impedance Tuner Output Impedance DI Output Impedance Speaker Out Equalizer Bass Lo Mid Hi Mid Treble Voicing Filters 4 5 String Bass Contour Presence 10d PAD CLIP AA je
15. design which switches between a low voltage rail for normal output levels and a high voltage rail to accomodate peak levels This much more efficient approach allows us to build amplifiers with significantly greater output level at a fraction of the heat and weight We ve also added a tempaerature sensitive cooling system with a variable speed fan Under normal conditions the fan will be off or spinning at a low speed As the amplifier works harder the fan speed increases maintaining a safe temperature level Intelligent Protection Circuitry Gallien Krueger amplifiers use intelligent protection cicuitry which constantly monitors for any unsafe Operating conditions such as short circuits or im 1 properly wired speaker cables If an unsafe condition is detected the output signal is immediately muted and the power light changes from blue to red The amplifier will remain muted until the fault is removed If the protection cicuit activates while playing turn the amplifier off and check that you have not exceeded the maximum recommended load described in this manual Direct Out Your GK amplifier includes an electronically balanced DI Direct Inject ouput for connecting to PA and recording consoles This output is calibrated for 1 0V 0 dBV and can be adjusted via the Level control to match the input sensetivity of the mixing console A Ground Gnd Lift switch is included to remove hum and buzz when connecting to equipment powere
16. e a four conductor Speakon cable with non GK cabinets Instead use a two conductor Speakon or 4 speaker cable CAUTION UNDER NO CIRCUMSTANCES SHOULD THE WOOFER MAIN AMP AND THE 50 WATT HORN AMP BE CONNECTED TOGETHER Sample Settings Your GK amplifier is versatile in its sound and tone Below are a few suggested amp settings that can be used as starting points to define your own sound Note At higher playing levels the contour should be set lower for mid range clarity To get SOORB voicing the contour should be set to 0 or 10 only LEVEL pou W Q o0 OdBV co DIRECT OUT LEVEL PEO EQ o0 OdBV LEVEL e 6 co VOICING FILTERS ACTIVE EQUALIZATION ara eae TREBLE HI MID LOW MID BASS Optional VOICING FILTERS ACTIVE EQUALIZATION ete PRESENCE TREBLE HI MID LOW MID BASS A 7 7 INPUT rae FLAT E f E fi D Optional VOICING FILTERS ACTIVE EQUALIZATION st rin PRESENCE TREBLE HI MID LOW MID BASS ae T INPUT ti Optional Jazz Fusion VOICING FILTERS ACTIVE EQUALIZATION COOUR lee TREBLE HI MID LOW MID BASS tort INPUT 7 za Optional Set Min 12 o clock Neo Series Bass Combo Amplifier Both pickups recommended BI AMP OUTPUT zal NELER be POWER PROTECT CUT Deg HI CUT SEND RETURN TUNER Set 9 12 o clock Set 12 3 o clock Both pickups recommended BI AMP OUTPUT BOOST rs tae iat POWER PROTECT HI CUT ree HI CUT SEND RETURN TUN
17. he amplifier needs repair Neo Series Bass Combo Amplifier Quick Start Plug It In Set the power switch to Off and con nect the supplied power cord to the amplifier s AC receptacle and an AC power outlet of proper voltage see safety information on page 4 for details External Cabinets If using an external speaker cabinet connect it to the free speaker output If you are using two 8 ohm or one 4 ohm external cabinet with a combo amplifier disconnect the internal speaker Be sure not to exceed the recommended speaker load below Maximum Recommended Speaker Loads EXTERNAL INTERNAL TOTAL SPEAKER S SPEAKERS LOAD 1x 8 ohm in 4 ohms 1x 4 ohm out 4 ohms 2x 8 ohm out 4 ohms Note Ifyou are using a GK Horn Bi Amp compatible speaker cabinet set it to Bi Amp using the switch on the back of the cabinet See Page 8 for more details on GK s Horn Bi Amp System Initial Front Panel Control Settings Set all EQ controls and the Boost control to 12 o clock The Voicing Filters should be turned all the way down to get a flat response Set the Input and Master Volumes at 0 Connect Your Bass Using an instrument shielded cable connect your bass to the Input jack and press the power switch on Input and Master Volume Settings Set the master to 12 o clock then gradually increase the preamp volume control to a comfortable listening level Ifthe Clip LED by the input jack lights up while playing engage the 14dB Pad
18. itute for reading the rest of the manual Your amplifier should have come with the following items please check the contents of the box to ensure that you have everything Power cord Owner s manual Warranty card Safety instructions sheet ee If your amplifier did not come with all the items listed or if you encounter problems while setting up your new equipment please contact your local dealer or GK as soon as possible Gallien Krueger Inc 2234 Industrial Drive Stockton CA 95206 phone 209 234 7300 fax 209 234 8420 Internet www gallien krueger com Email info gallien com i ERR yyy ydeell TEELALLI TERRELL p Je Vey Always Listening I have never seen the point in doing things the way others have done them I also have not been very interested in following the latest fad I m a Stanford educated engineer who worked my way through school as a musician Like all musicians I have lugged amplifiers up stairways and into car trunks always wondering why these things had to be so heavy bulky and hard to handle As I am the principal innovator at GK our products reflect my attitudes and life experiences I don t model my designs after other manufacturers products Instead I believe new and old problems are best solved with new solutions Having taken our own path GK products enjoy a unique unmatched sound allowing you every opportunity to make an origina
19. l statement Having supported my products for over thirty years I have learned from the story they tell Gallien Krueger is a reflection of that story and has a commitment to support that legacy Just as the products I created over thirty five years ago are still telling their story the products we create today will be talking to us tomorrow We ll be listening ec lls Robert Gallien Neo Series Bass Combo Amplifier Table Of Contents Safety nmformation ccccccccccccccccccccccccece COUUTOCK SUA sree eco ee cee E EE E Front Panel ControOlS sesessececsececcecceceese Rear Panel Contr GIS ccesicuessasesncesucessscseeessss Horn Bi Amp SyStemM ssssssssessoseesooeeooeees Sample DOMINOS cscs drosseseseversiorccnescnsscanssaces TOCH LAMK icc cccoseeercsucssscuewess cuserecseunsenenss SP CCLIICAUIONS 3 4445 4 554505045444s0a0 be sues e sauces No CO MAATA Nn A pd ph Warning this amplifier is capable of producing high sound pressure levels Continued exposure to high SPL s can cause dameage to your hearing Always set the volume at a safe listening level or use hearing protection if the unit is operated at higher levels CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with arrowhead The exclamation point within an symb
20. ol within an equilateral triangle is equilateral triangle is intended to intended to alert the user to the alert the user to the presence of presence of uninsulated dangerous voltage important operating and within the product s enclosure that may be of maintenance servicing instructions sufficient magnitude to constitute a risk of in the literature accompanying the electric shock to persons appliance WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT ATTENTION POUR EVITER LES CHOCS ELECTRIQUES INRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND D 2 D O gt o o n D rP Ti C mu 49 Some O Put PA J eD Put 49 N Neo Series Bass Combo Amplifier Safety Information Please read all enclosed safety precautions before connecting or operating this product Verify Line Voltage and Amperage Your new amplifier has been factory configured for use with the following 120 Volt 60Hz 15 A circuit for USA Canada 230 Volt 50Hz 10 A circuit for UK Australia 240 Volt S50Hz 10 A circuit for Europe 100 Volt 50Hz 15 A circuit for Japan 220 Volt 50Hz 10 A circuit for Korea Verify AC Circuit Capacity Before Use The high power output of your amplifier may require heavy
21. w you to cut signal loss not boost signal gain Graphic equalizers provide plenty of variation but are much better for room equalization When used with instruments they tend to sound unnatural or synthetic Parametric and semi parametric equalizers can sound natural and offer a great deal of flexibility but require some technical knowledge and great ears The equalizer in GK amplifiers is unique in the industry and reflects over 30 years of continuous development and refinement We ve developed a rotary four band active equalizer optimized for bass guitar The active circuitry allows you to either boost or cut at a given frequency with greater integrity in signal reproduction The treble is a shelving type control that boosts the high frequencies evenly Respectively the bass is a shelving control that evenly boosts the low frequencies The high mid and low mid are peak bandpass type controls with fairly wide Q bandwidth patterns which are much more musical sounding Each of the four bands are connected in series meaning the output of the first band is fed directly into the input of the next and so on This eliminates the rippling or combing that can happen with parallel EQ circuits The overall result from all of this 1s an equalizer that s flexible yet easy to use and sounds natural even at extreme settings 10 Voicing Filters The three stage voicing filter simplifies the process of shaping and coloring
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