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method for cutting highly intrusive or severely 
problematic sounds such as feedback, excessive 
booming & body handling noise, background rumble, 
honky upper mid range or muddy lower mids
First try the Notch Filter on what seems to be the most 
problematic frequency spectrum leaving the other EQ 
controls at their centre position. Here are a few potential 
strategies

10.4.1 How to sweep out unwanted low end Bass

i) Set the NOTCH Frequency Rotary Pot ACW well below
useful tonal range of instrument or fully ACW

ii) Set the NOTCH-Q knob close to or fully ACW

iii) With the NOTCH Switch selected for channel, adjust 
the NOTCH-Q Width control from its minimum ACW 
setting slowly turning CW while listening to the amplified 
low strings until the tone of the low strings starts to thin 
out and clarify as required. Re-balance both controls 
slightly in order to fine tune the maximum amount of cut 
and the roll off point according to what sounds best

10.4.2 Excessive or problematic heavy Midrange:

Set NOTCH-Q and NOTCH Frequency controls around 
middle of dial and then, whilst listening to the amplified 
sound, adjust the NOTCH frequency control to find where
the cut is most effective. Increase or reduce the   
NOTCH-Q control until the problematic frequency is 
minimised without taking more useful tone than is 
necessary

10.4.3. Feedback Peak / Spikes & Feedback :

P.45

Содержание EDB-2 H.E

Страница 1: ...annel Pre amplifier Harmonic Enhancer INSTRUCTION MANUAL New for 2020 Acoustic Pre Amplifier EQ s D I Anti Feedback Blender Phantom Harmonic Enhancer For Pickups Microphones via Battery or D C Powering SUPERIOR ACOUSTIC AMPLIFICATION CONTROL ...

Страница 2: ...nable Notch Filter plus other versatile facilities to get the best possible trouble free sound from amplified acoustic stringed instruments with ease all from an exceptionally compact unit EDB 2 H E incorporates customer led Expanded Features now Dual Instrument Player friendly Featuring H E A T Harmonic Enhanced Analogue Technology offering enhanced tuneable natural High Harmonics Improved Class ...

Страница 3: ...balances feedback ground hum 2 Range Switches for Guitar Bass Violin Mandolin handling noise boom feedback Easy to read BBC Pro Audio design panel layout contrast Batteries Power Supply included as standard suits Europe North America Japan etc 100v 240v 3 Pre amplifier mounting methods New sturdier lightweight extra compact construction in Aluminium alloy Long Life Heavy Feel Controls that hold th...

Страница 4: ...d in UK Made in EU Congratulations on your astute purchase Please read this comprehensive manual carefully before first use of your EDB 2 H E Text is also available on our website www headwaymusicaudio com P 4 ...

Страница 5: ...ects Pedals and Rack Units Powered Monitor Speakers Headphone Amps Combo Amplifiers and Power Amplifiers EDB 2 H E also offers a uniquely developed Analogue Harmonic Enhancer feature perceived as an audio sparkle which replaces naturarlly inherent harmonics 1 1 5 Octaves above what is often lost from your instrument due to shortcomings or inadequacies in a pickup or microphone All can be achieved ...

Страница 6: ... or damaged with use of any but the included Power Supply Will likely to be damaged if rain or liquids are in contact CONTENTS OF EDB 2 H E RETAIL PACKAGING BOX I EDB 2 H E Pre amplifier x 1 EAN 7107718579859 II 1 x Belt clip screws x 2 III Power Supply as standard with mains plug for terri tory initially supplied P 6 ...

Страница 7: ...N 1 1 IMPORTANT SAFEGUARDS 1 2 1 6 SERVICNG REPAIRS RETURNS LEGAL 1 7 WARRANTY GUARANTEE TERMS 1 8 STORAGE TRANSPORT 2 0 EDB 2 H E POWER ON 3 0 PICKUPS MICROPHONES TO INTERFACE 3 1 LEAD CABLE NOTES 4 0 CH 1 JACK INPUT 5 0 MUTE LIVE SWITCHES ON CH 1 AND CH 2 6 0 ROTARY POT CONTROLS 6 1 GAIN CONTROLS 6 2 GAIN COMBINED WITH MASTER VOLUME 6 3 5 BAND INTERACTIVE EQ CH 1 CH 2 7 0 HARMONIC ENHANCER H E A...

Страница 8: ...14 0 AUXILIARY AUX IN 15 0 MASTER VOLUME 16 0 LINE OUT JACK 17 0 D I OUT XLR 18 0 POWERING BATTERIES OR POWER SUPPLY 19 1 PHYSICAL SPECIFICATIONS 19 2 ELECTRICAL SPECIFICATIONS 20 0 TROUBLE SHOOTER CHECKLIST HEADWAY PRODUCTS POLICY OF CONTINUAL IMPROVEMENT P 8 ...

Страница 9: ...utside signals Anti Feedback Option RANGE FILTER High Pass Filter Low Roll OFF Switches CH 1 CH 2 Violin 192Hz Guitar 85Hz Bass 41Hz MUTE CH 1 CH 2 Turns OFF Output Signals Re Red LED Live Denotes Pre Amp Output ON MASTER Sets Output Level to LINE OUT XLR D I OUT AUX IN levels EARTH GROUND LIFT Anti Hum Loop Disconnects Pin 1 re XLR OUT LOW BATTERY LED Lights PURPLE when Batteries are within hours...

Страница 10: ...l RETURN Mono Ch 1 to Tip SEND Mono Ch 1 to Tip LINE OUT Low Impedance Mono Mix Jack Out CH 1 JACK IN Switchable Phantom to Tip Ring Powers Electret Mics suitable Active Pickups PHANTOM POWER 11V TO CH 1 JACK IN SWITCH OFF RING TIP CH 2 MIC XLR IN Balanced with Phantom Power Option See XLR SWITCH CH 2 Stereo Mono JACK IN Routes Stereo to Both Channels if no Jack in CH 1 EXT POWER IN 18v DC Adapter...

Страница 11: ...EDB 2 H E Bottom Panel P 11 BATTERY COVER PP3 6F22 x2 BELT CLIP MIC STAND NUT Belt Clip as shown or Mic Stand Adapter 19 32 15mm BATTERY PANEL KNURLED SCREW ...

Страница 12: ...DB M PSU EU Europe Continental Mainland EDB M PSU NA North America S America Japan EDB M PSU AUS Australasia S Africa 1 1 2 EARTH PROTECTION GROUNDING To prevent electric shock ensure that any Input Output cables from EDB 2 H E are connected to amplification or signal processing devices e g mixers amplifiers effects units so that where Mains powered devices with an Earth Connection are used there ...

Страница 13: ...y EDB 2 H E and hands before re use SHOCKS WARNING Stop immediately the use of any sound equipment when even minor electric shocks are detected and seek a practical consultation from a qualified professional electronics repair technician 1 1 5 VENUE WARING Avoid venues with suspect electrical wiring damp or wet wires and or contacts or where sparks are visible 1 1 6 MICROPHONE SAFETY Where microph...

Страница 14: ...ERVICING REPAIR RETURNS All Headway servicing and repairs should be carried out by Headway Music Audio Ltd or any approved agents where applicable All returns must be sent pre paid and insurance against loss is sender responsibility Headway Music Audio Ltd will NOT be held responsible for losses in transit or for duty and taxes incurred e g where customs documentation is completed incorrectly Cust...

Страница 15: ...is unplugged before cleaning with a moist cloth Do not allow moisture to enter unit and do not use chemical or abrasive cleaning products 1 4 PRODUCT LIABILITY Headway Music Audio Ltd cannot be held responsible for damage to its products caused by the subjection to unreasonably high or low temperatures or due to wet conditions or for abuse or mishandling Headway Music Audio Ltd retains the right t...

Страница 16: ...ARRANTY GUARANTEE TERMS EDB 2 H E guarantee is valid for up to but no longer than 12 months from the date of purchase but valid only after the guarantee registration has been made online at www headwaymusicaudio com All guarantee issues will be subject to assessment by Headway and appointed service agents Headway Music Audio Ltd does not recognise or participate within guarantees warranties offere...

Страница 17: ... WHAT IF I HAVE NOT REGISTERED GUARANTEE If you have not registered the Guarantee Warranty within 30 days of purchase you are not covered by the 12 Month Guarantee unless you are the end retail customer and have purchased direct from Headway Music Audio Ltd If you have not registered it you retain your statutory rights under consumer law of the country in which you made the purchase and your contr...

Страница 18: ... any Instrument s are plugged in to their cables the cable are plugged into the EDB 2 H E and Mute Switches are ON Next move Power Switch slowly with a delay through middle Standby position for less noisy switching to ON when connected to a live sound system Lastly when ready for live sound Switch Mute s to Live on Channel s in use Red LED s cease illuminating This should be a virtually silent ope...

Страница 19: ...Under Saddle Pickup Systems e g HE4 G FEQ or Snake3 pictured above or forthcoming Headway Superbug Low Impedance Output with Fixed EQ according to model These pickups are one of the last prone to feedback and body noises P 19 ...

Страница 20: ...pedance Output that requires a short high quality lead into a High Impedance Input such as EDB 2 H E iii The Band Band2 pictured on Violin above Headway s The Band is a popular easy fit strap around Violin Contact Pickup with High Impedance Output The Band2 is latest tonal upgrade version for 2020 iv Active Magnetic Sound hole Pickups Low Impedance Output e g Headway SAM 1 pictured P 20 ...

Страница 21: ... types of pickups are generally the least prone to feedback SAM 1 carries pre EQ and Harmonic Enhancer Other active magnetic sound hole pickup typically require a lot of EQ and may still sound mellow or boxy P 21 ...

Страница 22: ...Piezo Contact Pickups e g forthcoming Headway SuperBug Low Impedance Output These should be less prone to feedback than Passive Contact Pickups and a lot less prone than Microphones vi Transducers or contact pickups High Impedance e g Headway Limpet Passive Contact Pickup P 22 ...

Страница 23: ...ically 3v 5v from their own power supplies MEMS are new to the analogue audio industry but carry hold a lot of potential to rival miniature Condenser Microphones i e a smaller footprint lower power consumption higher sensitivity flatter response and less expense xi True Condenser or Ribbon Microphones Run optimally at 48v from EDB 2 H E or most mixers via XLR connections they deliver high quality ...

Страница 24: ...ms or woodwind 3 1 CABLE LEADS NOTES Suitable Jack leads as used to the Input of the EDB 2 H E should have at least 80 screening preferably braided or at least conductive plastic shielding with extra extensive lapped screening to minimise hum and radio interference Denmark can have a particular problem with hum when using Mains electricity to run a sound system because there is no mains earth So e...

Страница 25: ...ended For Lower Impedence Magnetic Passive Pickups and Dynamic Mic s a max of 6m is recommended 3 1 2 LEADS FOR ACTIVE PICKUPS quality Active powered Pickup Systems of all types are least affected but are not unaffected by lead length and quality A maximum of 10m 33 is recommended For lengths above that go to balanced cables such as XLR outputs from Active D I Boxes e g EDB 2 H E 3 1 3 D I BALANCE...

Страница 26: ...ow silent tuning in front of audience or to switch off during periods of inactivity without re setting controls preventing howl sound feedback Two Mute Switches enable easy instrument swapping and quieter plugging unplugging when Live Mutes can also be used to switch off a feedback loop instantly ROTARY POT CONTROLS LOCATED ON TOP 6 0 GAIN CONTROLS CHANNEL 1 2 0dB 32dB Gain Graduated 0 10 Turn Rot...

Страница 27: ...e chain with the lowest noise levels EDB 2 H E is a multi function device which may be run on batteries which has made the achievement of a low noise performance challenging but this has been attained This is not mains powered nor is it a limited single function device or a digital software so some small amount of noise is necessary See Electrical Specifications 19 2 7 6 2 GAIN MASTER JOINT OPERAT...

Страница 28: ... LOCATED ON TOP Baxendall Interactive Musical Sounding EQ CW Clockwise right to Increase effect of Rotary Pot Controls from Centre position marked by Centre Detent ACW Anti Clockwise left to reduce effect of Rotary Pot Controls from Centre Position where you may be able to feel Centre Detents Detents may not be felt due to long life Heavy Feel Pots used potentiometers that hold their position Each...

Страница 29: ... e g Headway HE4 G FEQ for High End Acoustic Guitar Fixed EQ Nylon Strung Guitars played finger style Macaferri or Resophonic Guitars usually require flat mid range EQ or maybe with a slight boost unless they are played with mainly full chords in which case some mid cut may be preferable Violins and Mandolins often require treble cuts and low end cut below 200Hz as offered on EDB 2 H E Range Switc...

Страница 30: ...re cut rather than boosted 6 3 3 WHAT DETERMINES TONE There are a lot of overlapping influences At the top treble end alone they include reflectiveness and brightness of the room what fixtures fittings and people are in it the size of the space the instrument type and what it is constructed of strings type and condition tuning player style type of pic or fingers used pre amplifier effects power am...

Страница 31: ...nhanced or reduced by the Bass Control If you prefer a more sharply focussed Bass cut use the Notch Filter Guitar or Violin Range setting offers a fairly gentle additional bass roll off ii LOW MID CONTROL 12dB centred broadly approximately 590Hz With a broad sweep it allows control of lower Middle range of frequency spectrum which is centred above bass but below High Mid or Treble High These will ...

Страница 32: ... Mid ACW to thin out or hollow out tone reduce bias of middle guitar strings remove honkiness clunk or peakiness Increase Upper Mid CW to thicken tone add punch and increase bias towards middle strings iv PRESENCE CONTROL 7dB centred in narrow band approximately 2 8kHz Allows control of Presence which noticeably overlaps into lower treble and upper mid range areas but offers a useful narrow but di...

Страница 33: ...um which offers you increased brightness on turning CW or a jazzy mellow sound on turning ACW Treble overlaps mainly into Presence area However low strings will also produce high tones or harmonics Cut Treble ACW to reduce high end feedback harshness externally generated hiss squeaks from new strings or to compensate for over bright pickups or hard reflective rooms Increase Treble CW to compensate...

Страница 34: ... clarity to be heard in ensembles The 3 Way Channel Switch allows it to be applied to CH 1 CH 2 or Channels 1 2 The treble tone can be completely re shaped in this way without it needing to be overly bright by turning down treble control ACW Or an overly mellow pickup can have a huge boost in brightness by applying the HARMONIC EN HANCER while turning up treble control 7 1 PIEZO PICKUPS CERAMIC CR...

Страница 35: ...incorporates Harmonic Enhancement Analogue Technology 8 0 CHANNEL 2 MICROPHONE USE 8 1 INPUTS LOCATED ON FRONT END Channel 2 is suitable for a second pickup or Microphone on the same instrument or to facilitate and balance two instruments such as Guitar and Bass or Guitar and Vocals and provides a full independent set of EQ for each As with Channel 1 it suits Active and Passive Magnetic Piezo Pick...

Страница 36: ...acturers wiring or specifications Headway Music Audio Ltd will not be held liable for damage to other manufacturers pickup systems from Phantom Power The Ring Position suits more typical active pickup systems where wired for Phantom Power Tip position powering is required for many Electret Condenser Mic based systems 8 1 2 MIC INPUT XLR Impedance 2k Ohm XLR input accepts Dynamic Ribbon Condenser a...

Страница 37: ...tandard configuration See Phantom Power Electrical Specifications Microphone Notes 8 1 3 ON OFF MICROPHONE SWITCHING LOCATED ON TOP PANEL 2 Way Switch offers XLR ON OFF to minimise circuit noise to Jack In Channels and reduce battery power consumption when XLR is not in use 8 2 MICROPHONE USE NOTES Headway Music Audio suggests caution on the use of internal Mics within instrument bodies Miniature ...

Страница 38: ...ems causing a swirling effect and preventing clarity Finally the placement of a Mic inside a resonant chamber may produce uneven peaks and a tendency to low frequencies making them highly prone to feedback TESTING OR PERFORMANCE Musicians should bear in mind that they might judge the sound of an internal Mic at very low volumes but will often find it completely unusable at typical live performance...

Страница 39: ...d source GOOSENECKS If an internal Mic is on a flexible gooseneck you may lessen the problems by spending time finding the best sounding spot for placement but as soon as it inevitably moves or changes angle slightly or you take it to a different acoustic environment the problems are likely to worsen as it interacts differently with the room ANTI FEEDBACK ELECTRONIC DEVICES If used correctly these...

Страница 40: ...e stands or with Proel s Guitar body mounting bracket External Mics will still be prone to feedback compared to pickups however they should sound better than internal Mics DPA Headway recommends Miniature Instrument Microphones by DPA which are true Condensers HyperCardiod HE4 Headway s HE4 range of Co axial Piezo Cable Under Saddle pickups for acoustic instruments offer a more natural sound than ...

Страница 41: ...imum active system performance is required but where battery access may be restricted e g f Hole Instruments and Resophonic Guitars When using Phantom Power we recommend removing any battery in place in a pickup system whether new or expired which might be heated up or be damaged and leak You may then need to bridge the two battery snap terminals with a wire from positive to negative to complete t...

Страница 42: ... THE MANUFACTURER OR THEIR TECHNICAL SPECIFICATIONS BEFORE TRYING THIS FACILITY 9 2 3 WAY PHANTOM SWITCH OFF 11v to XLR IN 48v to XLR IN 48v powers true Condenser Microphones optimally Exceptional quality reproduction may be obtained in this way Many of them will also operate on a lower voltage 9 3 PHANTOM POWER CONSTRAINTS It is NOT possible to power the EDB 2 H E via Phantom Power from a Mixer d...

Страница 43: ...ower due to reduced functions Applying Phantom from a Mixer to EDB 2 H E will NOT damage the unit 10 NOTCH FILTER CONTROLS ANTI FEEDBACK LOCATED ON TOP Sometimes known as a Sweep the Notch Filter utilises two Rotary Pot Controls a Sliding On Off Switch and a sliding channel selector Switch It applies either to Channels 1 or 2 and applies to Line out and DI out P 43 ...

Страница 44: ...50Hz 6kHz Sets the approximate centre frequency from 50 Hz low bass 6kHz treble via a Rotary Pot to which the Q Pot sets a broad or narrow notch cut either side of the position 10 3 NOTCH FILTER SWITCHES i 2 Way Slider Switch determines whether the Notch Filter is In or Out This enables you to instantly determine whether you like the application set ON or OFF without altering settings The LED indi...

Страница 45: ...itch selected for channel adjust the NOTCH Q Width control from its minimum ACW setting slowly turning CW while listening to the amplified low strings until the tone of the low strings starts to thin out and clarify as required Re balance both controls slightly in order to fine tune the maximum amount of cut and the roll off point according to what sounds best 10 4 2 Excessive or problematic heavy...

Страница 46: ...of a body of sound to enable it to be perceived as full natural or balanced An alternative view would be that carefully tuned active EQ boost and cut can be used creatively beyond just problem solving 11 RANGE CONTROLS ANTI FEEDBACK CH 1 CH 2 LOCATED ON TOP 3 Way Slider Switches These set a High Pass Filter which rolls off low frequencies according to the requirements of three target instrument ty...

Страница 47: ...Ensure that Combo Amplifiers and P A speakers are capable to reproducing these Guitar and Bass frequencies as very small cabinets will typically not produce any fundamental frequencies below about 130 Hz Setting also applies to 12 String Electric and Nylon Strung Guitars Resophonic Guitars and Pedal Steel Guitars plus other mid range instruments e g Bouzouki most Banjos If applied to Baritone Guit...

Страница 48: ...ide to help set Notch Filter and Range switches Bass Guitar Double Bass E 40Hz 5 String Basses theoretically produce 30Hz on Low B string but there is no fundamental produced that low on the instrument and even if there was almost no bass amplifier could reproduce such low frequencies We perceive the 30Hz via the harmonics at an octave or more above i e at 60Hz Set on Bass Baritone Guitar B to B 6...

Страница 49: ...e may be little or no point trying to amplify the bass end of that acoustic instrument since it would be drowned out by Electric Bass Guitar Bass Drum or Keyboards etc It may be trying to feedback at lower volume levels than where an acoustic guitar s low tones are likely to be audible To achieve this effect set Range Switch on Violin further reduce Bass and Low Mid EQ controls and set Notch Filte...

Страница 50: ...r match diverse separate signals via 2 Channels in a mix similar to tiny time delays between them The function is also used to beat feedback It will change tone slightly which is inevitable In Phase Low position is normal Out of Phase via Channel 1 with Channel2 Or could be for Anti feedback Middle Position Out of Phase via Channels 1 2 with other non EDB 2 H E signals Alternative Anti feedback op...

Страница 51: ...rdrive Distortion Pedals for Acoustic Instruments if you wish to retain an acoustic sound Headway Music Audio Ltd recommends that Jacks Socket contacts be kept clean to retain full working operation Lubricating with e g Switch Cleaner with Lubricant or WD40 will prevent problems Send Return Sockets should treated with particular care 14 AUX IN IPod LOCATED ON RIGHT SIDE 3 5mm Diam Mini Jack Socket...

Страница 52: ... BALANCED OUTPUT VIA XLR LOCATED REAR END Less sensitive to cable quality specification or cable lengths May be interfaced with rack units pedals combo amplifiers headphone amps many digital recording interfaces and many power amps An XLR Output lead that terminates in a stereo balanced or Mono Jack Plug may be used if convenient Passive Transformer type D I s are designed for microphones only and...

Страница 53: ...over and access batteries Connection is via two fixed non reversible clips which should be pinched on tight Batteries should be new and identical and their condition checked before use to avoid damage or injury Dispose of leaking batteries responsibly Battery removal is unnecessary whilst using a Headway DC Adapter external Power Supply Unit or if EDB 2 P 53 ...

Страница 54: ... Hrs if Phantom Switch also ON which depends on current draw of device EDB 2 H E is Phantom Powering Lithium have the longest life but are relatively expensive and banned from normal international transit fitted not fitted or expired 2nd Alkali 70 Hrs of Power ON or less hours if EDM 1 H E Phantom Switch also ON Probably the best value non rechargeable battery to purchase in terms of cost per hour...

Страница 55: ...cturer claims of specification when new 1st Lithium Polymer Rechargeable PP3 at approx 100 Hours 2nd Lithium Ion Rechargeable PP3 at approx 60 Hours roughly comparable to Alkali when new 3rd Ni Mh Nickel Metal Hydride PP3 9v 280 mAh at approx 50 Hours 4th Ni Mh at 9 6V 220 mAh PP3 NiMH Rechargeable Battery at approx 40 Hours Headway advises keeping two spare PP3 batteries for EDB 2 H E 18 4 LOW BA...

Страница 56: ...ted or stressed as it will subsequently fail A loose loop held by a re useable nylon or double sided Velcro cable tie holding it together will allow it to last years See Specifications 19 for PSU details 19 SPECIFICATIONS OF EDB 2 H E EAN 7107718579859 19 1 PHYSICAL SPECIFICATIONS Approx Dimensions Aluminium Metal Box Length 160mm 6 3 Overall Length 167mm 6 57 Box Width 100mm 3 9 Overall Width 103...

Страница 57: ...and slightly brighten dull sounding Passive Magnetic Pickups Dynamic Mic s Gain Control to Ch 1 Jack Continuously variable 0 32dB Jack IN Offers Mono Signal path IN via Tip plus Phantom Power 11v option sent when switched on via Ring or Tip Switching Options Gain Control to Ch 2 Jack Continuously variable 0 32dB Jack IN Offers Mono to Ring Ch 2 or Stereo Signal path IN via Tip to Ch 2 Ring to Ch 1...

Страница 58: ...TOM POWERING OF ALL PRESENT PAST MODELS OF EDB PRE AMPLIFIERS Output XLR does NOT accept 48v Phantom from a mixer as milli amps power provided is not sufficient to power EDB preamplifier s high performance multi function features 19 2 5 PHANTOM POWER TO IN JACK SWITCHABLE IN Jack Socket 11v with 10 mA Current Limit on Ring option or 5K6 Resistor in Series for Tip setting 3 Way Switch Off Ring Tip ...

Страница 59: ... Noise Level True RMS 20 Hz 20 kHz At 20 dB gain EDB 2 H E produces 90 dB At 10 dB gain EDB 2 H E produces 94 dB Distortion THD See 6 1 Noise Notes 19 2 8 POWER SUPPLY UNIT D C Adapter Supplied as standard Mains Plug type PSU inclusion with EDB 2 H E determined by Trade Purchaser AC ADAPTER CE in EU UL Listed in USA PSE in Japan INPUT 100 240VAC 50 60 Hz 100mA OUTPUT 18VDC 0 5A N B Output power ca...

Страница 60: ...WOULD THEN BE TO i PURCHASE THE CORRECT PSU ADAPTER FROM HEADWAY ii TO USE BATTERIES iii TO USE A MAINS PLUG TYPE CONVERTER OR iv TO RETURN THE PRODUCT FOR A REFUND AND PURCHASE FROM YOUR OWN TERRITORY WITH THE CORRECT MAINS PLUG ON PSU ADAPTER Headway Music Audio will always supply the correct plug type to each territory where ordered with EDB 2 H E On occasions purchasers may opt to purchase EDB...

Страница 61: ...ice Pre amplifiers for long term use and use local re cycling and electronics collection schemes RoHS Regulations EDB 2 H E and other Headway products are made in accordance with RoHS Regulations and are made free of lead and other environmentally damaging substances 20 TROUBLE SHOOTER CHECKLIST 20 1 AVOIDING ACOUSTIC FEEDBACK ROOM RESONANCES Turn the amplifiers instruments and microphones down an...

Страница 62: ...pickup or magnetic pickup and decrease proportion of Contact Pickup or Mic or Increase proportion of Contact Pickup and reduce Mic level Where using Mics avoid Omni directional and use Uni Directional hypercardiod Move source closer to any Microphone in use Electronic feedback destroyers are rack units which when set up correctly automatically tune into and attenuate the troublesome feedback peaks...

Страница 63: ...RSH or BOOMY SOUND Use Notch Filter or EQ controls to hone in on and cut troublesome frequencies Under saddle pickups may not be fitted or seated correctly and evenly on the instrument Contact a professional luthier in order to have the installation checked and put right If a contact pickup is in use change its placement in order to get the best sound by locating the sweet spot and avoiding honks ...

Страница 64: ...rom mixer or optional Headway EDB EDM VAB PSU External power supply Turn down gain control or excessively boosted EQ controls or engage attenuation switch on some devices e g PAD control 15dB Avoid Passive D I boxes transformers which can change or degrade the sound of a pickup due to the way they load it and can add rhythmical load and discharge noises Check that a Power amp Output or Headphone O...

Страница 65: ...oil cable runs When using the XLR to Jack adaptor for a D I output set the Earth GND LIFT switch to cut earth loop hums if required Otherwise leave Earth Lift switch Off Use Notch Filter with narrow Q to hone in on troublesome hum and cut it at around 50 60Hz or cut fluorescent light buzz at around 100 130 Hz Mains Filters prevent noise transmitting through mains power which can affect amplifiers ...

Страница 66: ...used To avoid use highly screened jack leads into Inputs and use active pickups Use only current government licensed type approved multi channel radio Mics and radio transmitters of good quality If noise or broadcast radio interference is experienced change for conventional Microphones and high screen leads 20 5 INTERMITTENT or LACK OF SIGNAL Check that all connectors are pushed firmly into their ...

Страница 67: ... misshapen in any way Check that XLR leads are wired correctly as standard See Specifications If a socket is set too deeply recessed into an instrument a jack plug may not make full contact Check that mains supply is operating in chain of power supply with earth connected at all points It is recommended the best quality of connectors be used We recommend quality products Neutrik Deltron Schurter S...

Страница 68: ... Steel Strung Acoustic Guitar amplification EDM 1 H E Equaliser Direct Mini Ultra Compact 1 Channel EQ Pre amp with comprehensive new features including Tuneable Range Filter Phase Reverse Earth Lift and D I Output with 3 Band EQ Send and Return via Insert Point and Harmonic Enhancer Switch with im proved Pro Audio sound quality plus lightweight Alu minium enclosure supplied with 2 Adapters Plus v...

Страница 69: ...isting Products include HE4 e g HE4 G FEQ Active Under Saddle Pickup for Steel Strung Acoustic Guitar Also versions for Mandolin Bouzouki Nylon Strung Guitar Ac Bass etc Improved version introduced in 2019 Snake3 e g Snake3 AG Active Under Saddle Pickup for Steel Strung Acoustic Guitar Versions for other stringed Instruments PIC of Violin Bridge Pickup VL3 Bridge based Violin Pickup System Rosewoo...

Страница 70: ... the right to alter specifications components and prices without prior notice Validate your Guarantee only by registering it online within 30 days of purchase We recommend that to get the best possible sound you use only Headway Pickups and good quality Microphones such as the excellent DPA Miniature Instrument Mics P 70 ...

Страница 71: ...BSITE FOR AMENDMENTS ON RETURNS ADDRESS www headwaymusicaudio com EDB 2 H E EAN 7107718579859 Headway Music Audio Ltd VAT Tax number GB 924 7711 16 EORI number GB 924771116000 Company Reg No 05685289 MAKING INSTRUMENTS LOUDER SINCE 1995 The British Acoustic Specialists HEARING WAY AHEAD 2020 Headway Music Audio Limited P 71 ...

Страница 72: ...Lawrence Juber pictured with Headway EDB 2 Pre amp mounted via integral Microphone Stand Bracket INSERT NOTES P 72 ...

Страница 73: ... P 73 ...

Страница 74: ...INSERT NOTES P 74 ...

Страница 75: ...P 75 ...

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