Owner`s Manual
Contents
1. 4 aal 4 2 A INPUT Plug your bass into this jack using a shielded instrument cable B INPUT PAD Reduces input sensitivity to allow cleaner response with high output above 1 Volt RMS guitars Use the setting that sounds best NORMAL Full input sensitivity 10dB PAD Lower input sensitivity Active pre amplified bass guitars if you hear distortion even with the INPUT PAD switch active and a low not clipping GAIN D setting try replacing your guitar battery C MUTE Disables all audio output except the TUNER OUT V and HEADPHONES R jacks Useful when tuning up during instrument changes or while using headphones The LED lt indicates MUTE is on PROFESSIONAL BASS AMPLIFIER a wl PWR AMP ACTIVE DEFEAT CLIP TREBLE TRANSPARENCY EFX BLEND 9 ey oe o a be 2 2 mal Be lt el ve 5 Sannat auat a5 15 aust 1 D GAIN Adjusts the volume level of the preamp section After you adjust any tone or effects levels use the PRE AMP CLIP LED to find the best GAIN setting for the optimal signal to noise ratio PRE AMP CLIP Indicates when the preamp tone circuits or output buffer are being overdriven clipping causing signal distortion Occasional flashing is normal at your instrument s peak output levels The type of clipping that this LED indicates is not harmful to your amplifier so reduce GAIN if you2. WorkingPro Series BASS AMPLIFIERS OWNER S MANUAL swrsound com Important Safety Instructions This symbol warns the user of dangerous voltage levels localized within the enclosure This symbol advises the user to read all accompanying literature for safe operation of the unit A Read retain and follow all instructions Heed all warnings A Only connect the power supply cord to an earth grounded AC receptacle in accordance with the voltage and frequency ratings listed under INPUT POWER on the rear panel of this product A WARNING To prevent damage fire or shock hazard do not expose this unit to rain or moisture A Unplug the power supply cord before cleaning the unit exterior use a damp cloth only Wait until the unit is completely dry before reconnecting it to power A Maintain at least 6 inches 15 25 cm of unobstructed air space behind the unit to allow for proper ventilation and cooling of the unit A This product should be located away from heat sources such as radiators heat registers or other products that produce heat A This product may be equipped with a polarized plug one blade wider than the other This is a safety feature If you are unable to insert the plug into the outlet contact an electrician to replace your obsolete outlet Do not defeat the safety purpose of this plug A Protect the power supply cord from being pinched or abraded A This product should only be use
3. 15 or 415 this makes frequency changes more noticeable Adjust MID FREQ to the specific frequency then adjust MID LEVEL as desired NOTE When MID LEVEL is in the center 12 o clock position the midrange semi parametric equalizer is flat and has no effect on your signal regardless of the position of the MID FREQ control TIPS If you need to cut through the band a little more try boosting the 200 400Hz midrange frequency level If you like a more transparent or scooped sound try cutting the 800Hz midrange frequency level The midrange controls are especially useful in controlling fretless basses and their inherent qualities TREBLE Employs 8 shelving type circuit that boosts or cuts high frequencies and their subsequent octaves 15dB from about 2 kHz to 14 kHz TRANSPARENCY Boosts or cuts ultra high frequencies 15dB above 5kHz EFX BLEND Controls how apparent your effects loop sounds or more precisely the ratio of external effects loop wet signal to internal amplifier dry signal Used in conjunction with the rear panel Effects Loop jacks EFX BLEND is enabled when a 1 4 phone plug is inserted into EFFECTS RETURN S 6 Front Panel continued ENGAGE MI BASS INT PROFESSIONAL 0 BASS AMPLIFIER LIMITER PWR AMP ACTIVE DEFEAT CLIP K BASS INTENSIFIER A new SWR tone circuit that boosts of a chosen set of low frequencies combined with a
4. Accompaniment Connect a CD player or drum machine to EFFECTS RETURN Control the input level at its source and by using the EFX BLEND control J FOOTSWITCH Plug in the included footswitch here Use the footswitch to remotely switch MUTE and the BASS INTENSIFIER SWR Corona CA www swrsound com Made in Mexico U ci ci c 6 GND LIFT 3 0dB 10dB ape om UNBALANCED LINE OUT Provides unbalanced preamp output for an auxiliary amplifier or sound equipment that includes the effects loop signal Output level is controlled by GAIN D KV 9 0 Footswitch Unbalanced Tuner TUNER OUT Plug in your bass guitar tuner here to enable inline tuning Use MUTE C to disable audio output while tuning BALANCED XLR OUTPUT A true electronically balanced output suitable for studio and front of house live mixing consoles The function of each of the three BALANCED OUTPUT switches are described below Wiring for the XLR jack at the BALANCED OUTPUT is American Standard Pin Wiring 1 Ground 2 Positive 3 Negative DIRECT LINE Connects the BALANCED OUTPUT to a point in the signal path either before DIRECT or after LINE the onboard tone shaping circuits DIRECT pre EQ 1 LINE post EQ GROUND LIFT Disconnects the BALANCED OUTPUT ground connection pin 1 which may reduce hum noise due a ground loop non standard XLR wiring somewhere in the signal
5. 250V T4A 250V 3 5 in 8 9 cm 19 in 48 3 cm 13 5 in 34 3 cm 25 Ib 11 25 kg 4450000010 120V 60Hz USA 4450003010 240V 50Hz AUS 4450004010 230V 50Hz UK 4450006010 230V 50Hz EUR 4450007010 100V 50Hz JPN 1440 W 40 1V RMS 1kHz 700W RMS into 40 6 gt 0 1 THD 1kHz 440W RMS into 8Q 6 gt 0 1 THD 1kHz 3 9MQ 20mV 15dB 100Hz 15dB 6 2kHz 15dB MID FREQ frequency 15dB below CUTOFF freq 15dB 6 5kHz 20 27KQ 1kQ 1 5kQ 2 button Mute Bass Intensifier P N 065436 T15A 250V T8A 250V C Cc 3 5 in 8 9 cm 19 in 48 3 cm 13 5 in 34 3 cm 25 Ib 11 25 kg Product specifications are subject to change without notice 0 S 0 f 06 bed J A A Q 0 A O Y SWR Corona California USA SWR and WorkingPro are trademarks owned by Fender Musical Instruments Corporation Other trademarks are property of their respective owners 2005 FMIC All rights reserved WorkingPro Series Bass Amplifiers swrsound com 5
6. to disable speaker audio output NOTE While any headphones will work 75 ohms is optimum EFFECTS SEND RETURN Multi purpose jacks EFFECTS SEND provides a preamp output signal that includes onboard tone shaping Output level is controlled by GAIN D EFFECTS RECEIVE provides a power amp input that can be blended in any ratio with the onboard preamp signal using EFX BLEND J The Effects Loop circuit is on a side chain of the main circuit as in studio recording consoles to provide the full sound of your instrument AND the diversity of your effects units This circuit also reduces noise generated by effects units because it is located after the gain stages in the preamp signal path m Use only standard 1 4 mono phone plugs with these jacks Use a stereo to mono adapter if your source has a stereo plug 1 Effects Loop Connect EFFECTS SEND to your effects device input then connect the effects device output to EFFECTS RETURN NOTE Set the wet dry control on external effects units to the fully WET position to prevent phasing problems Set the input level on external effects as close to OdB as possible Multiple Amps Connect the primary unit s EFFECTS SEND to the auxiliary units EFFECTS RETURN The primary unit is used to control all auxiliary units except their MASTER Volumes Set EFX BLEND on all auxiliary units fully to WET Recording or Reinforcement Connect EFFECTS SEND to the sound equipment input
7. CHOC ELECTRIQUE NE PAS OUVRIR Headphones Effects Effects Return Send ATTENTION SUPERFICIE DE CHASSIS CHAUDE O FUSE Protects the amplifier from electrical faults Replace a blown fuse ONLY with a fuse of the type rating specified on the rear panel of your amplifier to protect your amplifier and maintain warranty coverage IEC POWER CORD SOCKET Connect the included power supply cord to a properly wired and grounded AC electrical outlet in accordance with the voltage and frequency ratings specified on the rear panel of your amplifier PARALLEL SPEAKER OUTPUTS WorkingPro Series amplifiers feature both 1 4 phone and Speakon speaker output jacks to provide flexibility in making your speaker connections Use the Speakon jacks whenever possible to take advantage of their superior power transfer efficiency and locking connectors All four jacks are full range and wired in parallel Read Speaker Connections and Impedance Guidelines before plugging anything into your amplifier IMPEDANCE GUIDELINES Use the impedance ratings on your amplifier and speakers to determine if a particular combination of speakers is appropriate for your amplifier NOTE All SWR bass speaker enclosures as well as most others are wired in parallel NOT in series therefore these Impedance Guidelines apply only to parallel speaker connections The illustration shows the total impedance loads of various combinations of speakers linked toget
8. do not forget about your amp after it has been installed in a rack case Continuous transportation and vibration can cause screws to become loose both on the WorkingPro and with your rack case rails We recommend that at least once a month you remove the WorkingPro from the case and tighten all outside screws and wipe off the outside of the chassis with a damp cloth Then check all the connections in your rack case and reinstall the unit Specifications WorkingPro 700 MODEL WorkingPro 400 PART NUMBERS 4450200010 120V 60Hz USA POWER REQUIREMENT POWER AMP MINIMUM IMPEDANCE SENSITIVITY POWER OUTPUT PRE AMP INPUT IMPEDANCE SENSITIVITY AT FULL POWER TONE CONTROLS BASS TREBLE MIDRANGE SEMI PARAMETRIC EQ BASS INTENSIFIER TRANSPARENCY SEND IMPEDANCE RETURN IMPEDANCE UNBALANCED LINE OUT SEND IMPEDANCE BALANCED LINE OUT SEND IMPEDANCE FOOTSWITCH INCLUDED EFFECTS LOOP LINE FUSE 110V 120V MODELS 230V 240V MODELS DIMENSIONS HEIGHT WIDTH DEPTH WEIGHT gt 4450203010 240V 50Hz AUS 4450204010 230V 50Hz UK 4450206010 230V 50Hz EUR 4450207010 100V 50Hz JPN 840 W 40 700mV RMS 1kHz 400W RMS into 40 6 gt 0 1 THD 1kHz 250W RMS into 80 6 gt 0 1 THD 1kHz 3 9MQ 15mV 15dB 100Hz 15dB 6 2kHz 15dB MID FREQ frequency 15dB below CUTOFF freq 15dB 6 5kHz 20 27kQ 1kQ 1 5kQ 2 button Mute Bass Intensifier P N 065436 T8A
9. power clarity and true full range response that s made SWR the choice of professionals for over twenty years Whether you ve chosen the WorkingPro 400 or 700 each model in the WorkingPro series combines the best classic SWR features e The famous preamp designed by original engineer Steve W Rabe e The Aural Enhancer e The 4 band active EQ with variable midrange with exciting new features like the footswitchable tuning mute e More flexibility with the XLR output e And especially the new exclusive Bass Intensifier circuit which simultaneously boosts and compresses a set of chosen frequencies to add pure low end thickness to your bass sound SWR since its founding in 1984 was created to serve one purpose to provide bass amplification products with professional quality tone features and power delivery for players of all levels and styles We sincerely thank you for choosing SWR and remain committed to helping you Amplify Your Future Read through this Owner s Manual before using your amplifier not only to ensure your safety and protect your investment but so the full potential of the SWR WorkingPro is at your command Please verify that the following items were included in your SWR WorkingPro packaging AC Cable Dual Footswitch SWR Catalog Front Panel PREAMP CLIP ENGAGE lt 4 6 gt go a BASS INTENSIFIER INPUT PAD INPUT 10dB Q
10. smooth fast acting compressor The boost and compression work in harmony to allow radical boosts in the chosen bass and lower midrange frequencies without the side effect of overdriving the amplifier circuitry Once dialed in it literally intensifies the bass tone in your sound It can be used as a boost for certain heavier sections of a tune or just as a part of your overall preferred sound ENGAGE Activates the BASS INTENSIFIER circuit as indicated by the LED x LEVEL Adjusts the amount of bass boost added by the BASS INTENSIFIER Hint Adjust slowly so you can hear the difference a small amount of this effect can have on your tone CUTOFF Adjusts the frequency range boosted by the BASS INTENSIFIER When fully counter clockwise only frequencies below 80Hz are affected When fully clockwise frequencies below 200Hz are affected To best hear what this control does 1 Decrease MASTER Volume to half its normal setting or less 2 Set LEVEL to maximum 3 Set CUTOFF to 80Hz 4 Play a note repeatedly low E or low A and slowly rotate CUTOFF clockwise You will hear additional frequencies being boosted as you turn the dial and the overall effect will seem louder because more frequencies are being boosted As always your ears are the best judge Take some time to experiment and hear what works best A 0 a L LIMITER This circuit is located after MASTER Volume and before t
11. d with a cart or stand that is recommended by the manufacturer A The power supply cord of this product should be unplugged from the outlet when left unused for a long period of time or during electrical storms A This product should be serviced by qualified service personnel when the power supply cord or the plug has been damaged or objects have fallen or liquid has been spilled onto the product or the product has been exposed to rain or the product does not appear to operate normally or exhibits a marked change in performance or the product has been dropped or the enclosure damaged A Do not drip nor splash liquids nor place liquid filled containers on the unit A CAUTION No user serviceable parts inside refer servicing to qualified personnel only A SWR amplifiers and loudspeaker systems are capable of producing very high sound pressure levels which may cause temporary or permanent hearing damage Use care when setting and adjusting volume levels during use A Hazardous voltages may be present within the cabinet even when the power switch is off and the power cord is connected Therefore disconnect the power cord from the rear panel power inlet before servicing The power inlet must remain readily operable 4 SWR WorkingPro Bass Amplifiers Congratulations on your purchase of an SWR WorkingPro amplifier You now own a feature packed professional quality SWR bass amplifier with the famous SWR tone
12. edances are the same each speaker will receive equal power from your amplifier However if their impedances are not all the same speakers with the impedance load If their lowest impedances will receive most of the power For example if you connect an 8 ohm speaker and a 16 ohm speaker to your amplifier the 8 ohm speaker will receive most of the power Take this into consideration when calculating power handling capacities and when positioning your bass speaker enclosures and power rating issues go to the SWR Website at www swrsound com click on Press then click on Articles then click on Plug and Play Setup Tips for Amps and Speakers an article by SWR founder Steve Rabe that ran in the August 92 issue of Bass Player Magazine gt C rT 8 Rear Pane continued Parallel Speaker Outputs O O 2 PAN N OR MOI 1 Caution CAUTION RISK SHOCK WARNING MAINTAIN 6 MINIMUM CLEARANCE FOR VENTILATION CAUTION CHASSIS SURFACE HOT WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TURI AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR A e Balanced Output Worki DETO 0 O80 Headphones Effects Effects Return Send DIRECT 8 LINE are A ATTENTION SUPERFICIE DE CHASSIS CHAUDE R HEADPHONES Plug in your stereo or mono headphones here Use MASTER Volume to control your headphone listening level Use MUTE C
13. he power amplifier in the signal path Therefore the circuit is driven by MASTER Volume Its threshold starting point is preset so you get the maximum overall apparent volume without overdriving the power amplifier or internal speakers DEFEAT Disables the internal LIMITER circuitry Cl LIMITER ON 4 LIMITER OFF DEFEATED ACTIVE Indicates exactly when the LIMITER circuit is working only when the LIMITER is ON POWER AMP CLIP Indicates when the power amp is being overdriven clipping causing signal distortion Unlike preamp clipping power amp clipping can be harmful to your equipment Therefore if the POWER AMP CLIP LED flashes often either engage the LIMITER or turn down the MASTER Volume MASTER VOLUME Use to set the loudness output from your speakers and headphones after all other levels are set including external effects MASTER Volume does not affect any output levels other than the SPEAKERS Q and HEADPHONES R POWER SWITCH Switches power on off to the amplifier as indicated by the LED 7 5 6 69 0 Corm Rear Panel 7 Parallel Speaker Outputs CAUTION RE E 4 ATTENTION WARNING MAINTAIN 6 MINIMUM CLEARANCE FOR VENTILATION CAUTION CHASSIS SURFACE HOT EI A WorkingPro 0 0 Balanced Output IN OR MOISTURE Ec 0 1 WARNING TO REDUCE THE RISK OF FIRE OR 1 aution 2 ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAI AVIS RISQUE DE
14. hear unwanted distortion while this LED is on NOTE If an effects device is overdriven by the output level of the EFFECTS SEND S jack reduce GAIN then increase MASTER Volume M to adjust the overall loudness of the amplifier gt SWrsouUund com gt E AURAL ENHANCER Featured on just about every SWR amplifier since the company s inception in 1984 it is a trademark part of the SWR Sound people have come to know and love It was developed to bring out the fundamental low notes of the bass guitar enhance the high end transients and reduce certain frequencies that mask the fundamentals The ultimate results are 1 A more transparent sound especially noticeable when slapping and popping and 2 Passive basses take on an active type of quality when set at 2 o clock or positions further clockwise How the AURAL ENHANCER works Think of it as a variable tone curve that changes depending on where you set the AURAL ENHANCER control knob As you rotate the control clockwise from the MIN position you are elevating low mid and high frequency points selected specifically because they re different than those of the individual Tone Controls This remains true up to about the 2 o clock position This position a favorite for many users brings out both the low end fundamentals and crisp highs and at the same time adds a little lower midrange to help cut through the band However
15. her Generally you will want to connect your amplifier to speakers with a total impedance load equal to the minimum impedance rating of your amplifier 4 ohms for your WorkingPro amplifier A Operating below the minimum impedance rating can easily overheat the amplifier and cause damage Operating above the minimum impedance rating will reduce the amplifier s maximum power output 0 6 70 60 6 7 gt SWR Corona CA www swrsound com Made in Mexico Footswitch Unbalanced Tuner Line Out Out SPEAKER CONNECTIONS ARATO Bieli 40 a6 46 96 016 a0 For an in depth discussion of impedance 06 5 30 36 76 06 5 30 ONLY connect one amplifier to your bass speaker enclosure s Two amplifiers WILL NOT work and may damage your equipment DO NOT connect speakers with a total impedance load below the minimum rating of your amplifier 4 ohms to prevent damage to your equipment See Impedance Guidelines below ONLY connect speakers with a total power handling capacity that is above the power output rating of your amplifier to prevent damage to your equipment ALWAYS switch your system power OFF before connecting or disconnecting speakers ONLY use unshielded speaker cable of 18 gauge or heavier such as 16 or 14 gauge for speaker connections Shielded instrument cable WILL NOT work and may damage your equipment Notice that different combinations of speakers can equal the same total imp
16. if you go further clockwise and past the 2 o clock position selected mids will start to drop off specifically a group of frequencies centered around 200 Hz At this point and after the effect becomes much more pronounced However the curves involved here are gentle as opposed to the very extreme curves you can create by boosting or cutting the Active Tone Controls EQ Most significantly for basses the AURAL ENHANCER will help bring out the fundamentals of your lower registers without masking them with overtones as is possible when using the BASS control only At the same time it opens up the sibilance characteristics of all instruments without being harsh Your ears are the best judge when it comes to settings that affect the tone of your instrument Obviously numbers curves and circuits mean nothing if not heard with your own ears So play a chord a repeated lick or a harmonic and turn the AURAL ENHANCER control to various points on the knob to hear the effect for yourself BASS Employs a shelving type circuit that boosts or cuts low frequencies 15dB from about 30Hz to 100132 centered at around 80Hz Front Panel continued 5 MIDRANGE SEMI PARAMETRIC EQ You have two midrange tone controls MID LEVEL boosts or cuts 15dB the FREQ level of midrange response at the specific midrange frequency selected by the MID FREQ knob To find a midrange frequency rotate MID LEVEL fully to either
17. path Normally leave this switch out GROUND LIFTED GROUNDED normal Lifting the ground connection will not solve hum noise due to bad cables poor connections miswired A C outlets nearby fluorescent lighting especially with single coil pickups or a cell phone close to your bass OdB 10dB Reduces the BALANCED OUTPUT by 10dB OdB normal 10dB padded C 7770 gt To preserve the beauty and reliability of your amplifier we recommend that you install your amplifier in a rack case The WorkingPro is completely ready to be rack mounted and needs no additional parts or accessories other than the rack screws and the case itself The WorkingPro takes up two full rack spaces 3 1 2 If the rack in which you mount your WorkingPro requires that the rubber feet on the bottom of the chassis be removed please remember to keep the screws handy in case you wish to reattach the rubber feet at a later date The WorkingPro should be mounted as close to the bottom of the rack case as possible If you must mount the WorkingPro in an area of the rack other than the bottom space a piece of wood or similar solid material should be installed between the bottom of the rack case and the bottom of the amplifier to prevent flexing of the Rack Mounting 9 amplifier s chassis Severe or constant flexing of the chassis can damage the amplifier and is not covered under the warranty Please
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