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#14251 - Bass Op amends

1. Park Farm Inworth e Colchester e Essex e CO 5 9SH http www ashdownmusic com ap ABM RPIM 1 Amplifier Heads and ABM Combos MAG 250 Amplifier Head and Combos Electric Blue 150 Combos Thank you for purchasing your Ashdown Engineering Amplifier If you live in the UK please register your purchase by completing this form and return it to the following address Ashdown Engineering Ltd Park Farm Inworth Colchester Essex CO5 9SH Alternatively you can register online at httpz vwwwwwuashdownmusic com If you live outside the UK the local Zehdown distributor may have induded a spedfic registration form for your country Your Ashdown Engineering product details Model c a um Axe Ro EORR ow me ER COOL uox homo eee eee Se Se eee WORE eca ae ae ee a ja Tested Dy iced ee R he ee ee a a Serial number Ja sesa cnn Date 223 xk Bk OE ee 30x ee ee eS ee 5 Year Limited Lifetime Warranty Your Ashdown Engineering amplifier has been manufactured to the highest standards using the best selected meterials To ensure its optimum performance please ensure your amplifier is regularly serviced This product carries a LIMITED LIFETIME WARRANTY against defects in materials and workmanship for the orignd purchaser Ashdown Engneering will at their discretion replace or repair any product or part thereof which is found by Ashdown Engneering to be defective This warranty shall not aoply to the damage of covering fittings or fin
2. transformer but has better regulation i e provides more power on demand without sagging out and also has a minima external magnetic field which means that singe coil pick up basses are less likely to pick up mains hum from the amplifier e FET input circuit to the preamp for Warmth even when using the CLEAN input mix setting D C heaters for the TUBE section for low noise operation e Switch on delay for silent power up e Therrra trip for output protection e Relay switched speaker output lines for silent power down e Sub Bass output and Sub Harmonics facility for really serious bottom end Everything possible has been done to mae this a reliable top of the range minimum service high quality long lasting powerful bass amplifier We know you will appreciate the effort that has been put into the design and manufacture of this unit end you will be rewarded in your choice of bass arrplifier by long life and reliability ABM RPIV 1 MAG 250 amp ELECTRIC BLUE 150 ABM RPM 1 INPUT BASS nmn MIDDLE A f TREBLE OUTPUT Low INSTRUMENT o N 4 P Es gt EN m s e e iis E o LEVEL PUSHTO MUTE TUNERLINEOUT SUB OUT PUSH FLAT SHAPE e IN OUT INPUT LEVEL VALVE DRIVE E Q SUB SUB HARMONICS OUTPUT MUTE OUTPUTS MAG 250 INPUT BASS MIDDLE TREBLE OUTPUT INPUT LEVEL 220Hz 1 6 KHz e e POST es e HIGH LOW IN OUT IN OUT IN OUT IN OUT LEVEL TUNER LINE INS
3. E OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE WARNING ATTENTION THIS APPARATUS MUST BE EARTHED FOR CONTINUED PROTECTION AGAINST RISK OF FIRE REPLACE ONLY WITH SAME TYPE AND RATING OF FUSE UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE ET CALIBRE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR The lightning flash with the arrow head symbol within an equilateral triande is intended to alert the user to the presence of uninsulated dangerous voltage within this product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock The exclamation point within an equilateral triange is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying this product GROUNDING INSTRUCTIONS This product must be grounded earthed If it should malfunction or breakdown grounding provides a path of least resistance for electric current to reduce the risk of electric shock This product is equipped with a supply cord having an equipment grounding conductor and a grounding plug The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with the local codes and ordinances DANGER Improper connection of the equipment grounding conductor can result in a risk of electric shock Check with a qualified electrician o
4. TRUMENT INPUT DEEP BRIGHT EQ SUB SUB HARMONICS EFFECTS OUTPUT Electric INPUT BASS MIDDLE TREBLE OUTPUT amp cvw cq etet OG o0 09o HIGH LOW IN OUT IN OUT IN OUT ND RETURN INSTRUMENT INPUT DEEP BRIGHT EQ UB SUB HARMONICS EFFECTS OUTPUT INPUTS On the MAG 250 and Electric Blue 150 there are two choices of instrument input these are marked HIGH and LOW The HIGH input is high sensitivity and also high impedance to suit the output from PASSIVE basses The LOW input is low sensitivity and lower impedance to suit the output fromACTIVE basses The ABM has a singe instrument input provided linked to a PASSIVE ACTIVE selector switch switch out PASSIVE switch in ACTIVE INPUT CONTROL The INPUT control sets the signal level through the preamp in conjunction with the INPUT LEVEL VU Meter Electric Blue 150 uses a LED display This is adjusted to gve a reading of OVU on the meter yellow LED on Electric Blue 150 for average playing dynamics with occasional peaks into the red red LED on Electric Blue 150 regon Please note that this setting may require re adjustment after modification of the EQ controls PUSH FLAT SHAPE ABMRPM 1 only With this button in its OUT position a fixed E Q is superimposed on the preamp to gwe a bright but punchy character to the sound Pushing this button IN returns the preamp to a Flat frequency response This function mey also be controlled from a footswitch For the
5. and Sub Bass Processor FOOTSMWMTCH SOCKETS ABMRPM 1 Two stereo jack sockets marked SUB VALVE and EQ SHAPE are provided for connection of 2 way push on push off type foot switches The SUB footswitch mutes the Sub Harmonics when closed For this to On POWER operate the Sub Harmonics must already be activated with the front panel push switch For all other EI RE ee Nascar ae TEVELS RANGE PASS qb 4l s PASS SUB VALVE footswitches to operate the corresponding front panel push buttons must be in their OUT position C O e 7 ING ZF CROSSOVER AND OUTPUTS Rack Preamp RPMIL only so oHz va c QD QUT ob Ass cRossoven The BASS MAGNIFIER RACK PREAMP RPM1 has a built in high precision CROSSOVER with separate jack PRE AMPLIFIER D CROSSOVER AND OUTPUTS socket outputs for the HIGH PASS and LOW PASS signals Crossover frequency is adjustable from 35Hz to WARNING ATTENTION Eu PRETI c 160Hz with a level control for the LOW PASS output to adjust the balance between LOW and HIGH IUS acansrnscormenmnaccony ATTENTION C outputs signals There is also a FULL RANGE jack line output provided This section is provided with ideis rpm un ees BE ECHANGE DE d MAINS INPUT 50V A 115V 435m A MANUFACTURED IN ENGLAND BY ASHDOWN ENGINEERING switched output levels for simplified connection to power amplifiers that require either a OdB or 4dB signal level This swi
6. ay also be used to drive other power amplifiers to provide additional low bottom end to the system T he Low Pass filter is fixed at 160Hz OUTPUT LEVEL The OUTPUT control adjusts the overall level of the amplifier Adjust this for your preferred overall stage 300 500 WATT ABM HEAD COMBO playing volume SERIAL No MODEL No FOOTSWITCHYFOOTSWITCHY LINE INPUT SS p POWER 5 WARNING ATTENTION LINE INPUT ABM RPIMV 1 only FOR CONTINUED PROTECTION AGAINST RISK OF The rear panel has a Line Input socket for connection of other signal sources into the system This can be n ELT OE used for plugging a CD Tape or MiniDisc player into the amplifier for practising or rehearsing or for connection of a second preamp into the system CAUTION ATTENTION RISQUE DE CHOC ELECTRIQUE EFFECTS SEND RETURN rear panel on ABM RPM 1 amp front panel on MAG 250 amp Hectric Blue 150 DA I A serial effects loop is provided at a level of OdB The Effects Send and Return sockets for this are on the MAING ROUTIO A MESSA ASHDONNENGINEERING rear panel of the ABM RPM 1 and front panel of the MAG 250 and Electric Blue 150 below the D I socket The EFFECTS SEND socket can also be used as a Line Out socket if required The signal path through the preamp is only broken when a jack plug is inserted into the EFFECTS RETURN socket The EFFECTS 900 WATT ABM HEAD COMBO SEND is situated after the EQ Valve section
7. e amplifier and may cause problems with hum PUSH TO MUTE ABM RPIM 1 only W hen pushed IN this button mutes the output from the preamp to the power amp mutes the output from the D I socket and mutes the output from the Sub Out socket as well This leaves the output from the TUNER LINE socket still available to alow muted tuning An LED is provided next to this switch to indicate when the amplifier is muted This operates only from the front panel MUT E push switch i e pressing this button mutes all sound from the arrplifier and allows a tuner connected to the TUNER LINE socket to operate for silent tuning Release the button and you are back in action again ABM RPIV 1 MAG 250 amp ELECTRIC BLUE 150 TUNER LINE OUT SERIAL No MODEL No This output socket provides a line level signal that can be used either for a permanent connection to a tuner or a line output to slave up to other power amplifiers ABM RPM 1 users Please note that if this IT SEP EEUU socket is used as a slave output to other power amplifiers that the MUTE button will not mute the signal to the external power arrplifiers WARNING ATTENTION roce FOR CONTINGED PROTECTION AC AGAINST Rise OP SPEAKER SAI NS SUB OUT ABMRPM 1 only FIRE REPLACE ONLY WITH SAME TYPE AND RATING MIN LOAD 4 OHM This output socket provides a Low Pess filtered output for connection to a power arrplifier driving a sub ud 18 OR unit for additional extra low bottom end This m
8. e at a high volumne level or a any level that is uncorrforteble If you experience any hearing loss or ringing in the ears you should consult an audiologst 4 Make sure nothing interferes with the ventilation of the product when in use 5 The product should be located away from heat sources such as radiators heat regsters or other products that produce heat 6 The product should be connected to a power supply of the type described in the operating instructions or as marked on the product 7 The power supply cord of the product should be unplugged from the outlet when left unused for a long period of time 8 Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings 9 The product should be serviced by qualified personnel when a The power supply cord or the plug has been damaged or b Objects have fallen or liquid has been spilled into the product or c The product has been exposed to rain or rroisture or d The product does not appear to operate norrraly or exhibits a marked change in performance or e The product has been dropped or the enclosure damaged 10 Do not attempt to service the product All servicing should be referred to qualified service personnel 11 For continued protection against the risk of fire replace fuses only with those of the same type and rating as indicated on the back of the product WARNINGS USED ON THE EQUIPMENT TO REDUCE THE RISK OF FIR
9. eally fill out the sound and provide a character to the sound that is not possible by any other means The degree of Sub Harmonics is also dependant on the setting of the BASS control This facility is footswitchable on the ABM RPM 1 range via a socket on the rear panel For the footswitch to operate the Sub Harmonics must first be switched into circuit with the front panel push button DIRECT INJECT DI A balanced D I is provided on the front panel rugged metal latching XLR socket The ABM RPM 1 features a push button placed below the XLR that allows the user to choose either a Pre E Q Pre Sub signal or a Post E Q Post Sub and Effects siqnal the Pre E Q signal also includes the Shape facility if this is switched into circuit EBs and MAGs feature a Post E Q Post Sub and Effects signal The output signa from this XLR socket is set to a level and impedance suitable for connecting directly into the Microphone input of a mixing desk for either Direct Injection into the PA system or for recording T his must ONLY be used into a Balanced Microphone input It is not intended for any other type of connection This has a floating ground that is referenced to the mixing console it is plugged into and should not need ground lifting It is also unaffected by Phantom Powering on the Microphone input Make sure your XLR plug does not have the shell of the plug internally connected to the ground signa or this will connect the system to the chassis ground of th
10. footswitch to operate this button must be in its OUT position VALVE DRIVE ABM RPIV 1 only This routes the signal either through a clean Solid State amplification section control on zero or through a Dual Triode Tube arrplificatioryoverdrive section to add either tona character i e warrrth with the control set at 9 o clock a slight edge in the sound amp 12 o clock through to an increasing degree of Tube distortion overdrive as the control is advanced to maximum A Mix of these two amplification sections can be achieved with this control N B The degree of Tube distortion with this control will also depend on the setting of the INPUT control VALVE DRIVE IN OUT ABM RPM 1 only This push button switches the valve drive section IN or OUT This function may also be controlled from a footswitch For the footswitch to operate this button must be in its OUT position DEEP Electric Blue 150 amp MAG 250 With this button IN a fixed E Q is superimposed on the preamp to gve a BASS boost to the sound This gives 8dB at 50Hz BRIGHT Electric Blue 150 amp MAG 250 With this button IN a fixed E Q is superimposed on the preamp to gve aTREBLE boost to the sound This gves 10dB at 10kHz E Q IN OUT This button switches the Equalisation section IN or OUT i e the Bass Middle and Treble controls and the two sets of sliders rotary controls on Electric Blue 150 placed between these This facility is footswitchable on the ABM RPM 1 ra
11. ishes when affected by carelessness accident or extreme climete changes Nor does it apply to normel wear and tear of parts such as valves fuses lignt bulbs speakers controls etc Please complete the lower section of this warranty and return it within 10 days of purchase to Ashdown Engineering Ltd at the above address In the unlikely event of any defect please contact an authorised Ashdown Engneering dealer All transport charges are to be pre paid by the Owner Unless the regstration card is returned normal country warranty laws apply Important Registration Card Please complete and return this warranty within 10 days of purchase Indude any comments if possible Name gate ete Steere EX mom cu eee a Purchased from ccs Aktes 55 er ee ee eee eh ee ewe Ss Date RM IT GS a ee ek ee ere ee ee ee ee So ee So ere Model 2 6G tbs ERE au aa aa s xs a a aos ii e a Se iom es ee Se E jan UR an Serial Number 7 ICD ce a eS Oe eee eee ee CONVERTIR 226 Ge Gece SSS SEES OS SESE SES SHE SE Se SSE SEER NW E EE E EEG EE Ew WARNING When using electrical products basic precautions should be followed including the following 1 Read all the instructions before using the product 2 Do not use this product near water for example near a bathtub washbowl kitchen sink in a wet basement or near a swimming pool 3 This product may cause permanent hearing loss Do not operate for long periods of tim
12. nge via a socket on the rear panel For the footswitch to operate this button must be in its out position EQUALISATION This consists of BASS MIDDLE and TREBLE controls with two sliders rotary controls on Electric Blue 150 amp MAG 250 placed in between This can be used in a number of ways Firstly as a very simple Bass Middle and Treble tone control section as found on older traditional amplifiers This is done by leaving the two sets of sliders rotary controls on Electric Blue 150 amp MAG 250 set in their centre positions and using only the BASS MIDDLE and TREBLE controls to alter the overall tone e Secondly if more control is required then the sliders rotary controls on Electric Blue 150 amp MAG 250 can also be used to tailor the E O in the regons between the main tone controls This provides a very versatile Equalisation section that is simple to understand and operae yet provides a wide degree of variation It retains the simplicity of a three control tone section but provides the flexibility of a graphic equaliser SUB HARIMONICS This section consists of an IN OUT switch and a LEVEL control VV hen switched IN Sub Harmonics an octave below the notes being played are produced T he level of these Sub Harmonics relative to the straight bass sound can be adjusted using the LEVEL control This is very effective in thickening the sound end you will find in use that only a small degree of this lower octave is required to r
13. r serviceman if you are in doubt as to whether the product is properly grounded Do not modify the plug provided with the product if it will not fit the outlet have a proper outlet fitted The wires in this mains cord are coloured in accordance with the following code Green amp Yellow Earth Blue Neutral Brown Live CE MARK FOR EUROPEAN HARMONISED STANDARDS The CE mark which is attached to these products means it conforms to EMC Directive 89 69 EEC CE mek Directive 93 68 EEC and Low Voltage Directive 72 23 EEC This is a NO COMPROMISE design using the best parts available wherever possible Sorre examples of this are as follows e Gold plated jack sockets for reliability and long life e Full metal XLR sockets for strength and their positive latching facility e Powerful output stages for extra headroom rated in Engish RMS real power and not MUSIC or PEAK power as these can claim to be 2 or 3 times the actual red power of the amplifier e Doubling up of the cooling fans for reliability and reduced fan noise 2 fans can run a half the speed to provide the sare cooling capacity and as a consequence generate only half the noise of one fan running at twice the speed e Speed controlled fan drive circuit Again this reduces the amount of fan noise as the fans run slow when the unit is cool and increase in speed with output power demands e Powerful TOROIDAL mans transformer This is more expensive than a laminated stack
14. switched O AdBU EQUALISATION ABM 8dB 50Hz amp 4kHz 8dB 400Hz filter slope 6dB octave 47 15dB 45Hz 47 15dB 660Hz 47 15dB 7kHz shelving 47 15dB 110Hz 47 15dB 340Hz 47 15dB 1 3kHz 47 15dB 2 6kHz 3dB a 17Hz and 30KHz Electric Blue 150 3dB a 22Hz and 25K Hz Variable between 35 and 160Hz 230 115V Com 2 zy eee Q m TUI 71 Park Farm Inworth Colchester Essex CO 5 9SH E mail info ashdownmusic co uk
15. tches the levels of all three outputs RPM1 RACK MOUNT PREAMP SPEAKER OUTPUT except Rack Preamp RPML The Speaker Output sockets are also situated on the rear panel of the unit The ABM provides both jack and speakon connectors ABM MAG 250 amp ELECTRIC BLUE 150 PREAMPS INPUTS High Input Low Input Line Input ABM only Effects Return OUTPUTS Tuner Output Sub Output ABM only Effects Send D I Output Low Pass RPM1 only High Pass RPM1 only Full Range RPM1 only Speaker Outputs EQUALISATION Electric Blue 150 amp MAG 250 Impedance 3 9M Ohms Impedance LOK Ohms Impedance 22K Ohms Impedance 22K Ohms Impedance 22K Ohms Impedance 22K Ohms Impedance 22K Ohms 600 Ohn balanced Impedance 1K Ohms Impedance 1K Ohms Impedance 1K Ohms Minimum impedance 4 Ohms Bass 47 15dB 100Hz Shape Push Flat Lo Mid 47 15dB 220Hz Middle 47 15dB 660Hz Bass Hi Mid 47 15dB 1 6kHz Middle Treble 47 15dB 7kHz shelving Treble Deep 8dB 50Hz Slider1 Bright 10dB 10kHz Slider 2 Signa to Noise Better than 80dB EQ flat Slider 3 Distortion Less than 0 5 THD Slider 4 GENERAL SPEGCIHCATION Frequency Response Rack Preamp RPM1 Crossover Power Requirements Input range 150mV to 20V p p Input range 300mV to 40V p p Input level OdBu nomina Input level OdBu nomina Level OdBu nominal Level OdBu nominal Level OdBu nominal Level 20dBu nomina Level switched O AdBU Level switched O AdBU Level

#14251 - Bass Op amends

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