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1
USER MANUAL
WELCOME
USER MANUAL
BASIC PRECAUTIONS
BASIC PRECAUTIONS
WARNING - When using electrical
products, basic precautions
should be followed, including the
following:
1.Read all the instructions before
using the product.
Thank you
Thank you for purchasing your Ashdown Engineering Amplifier and welcome to the family!
We really think you’ve made the right choice and know that this amplifier will give you years of great
tone and service. It is a machine though and needs to be looked after, please read through this user
manual which will help you get the most out of your new Amp and keep it running as long as some
of our happiest and very famous customers.
REGISTER ONLINE
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 time
at a high volume level or at any
level that is uncomfortable. If you
experience any hearing loss or
ringing in the ears, you should
consult an audiologist.
5.The product should be located
away from heat sources such as
radiators, heat registers, or other
products that produce heat.
Here is where you need to visit to register your product:
6.The product should be
connected to a power supply
of the type described in the
operating instructions or as
marked on the product.
5 YEAR LIMITED WARRANTY*
Your Ashdown Engineering amplifier has been manufactured to the highest standards, using
the best- selected materials. To ensure its optimum performance, please ensure your amplifier
is regularly serviced. This product carries a five year warranty, against defects in materials and
workmanship, for the original purchaser. Ashdown Engineering will, at their discretion, replace
or repair any product or part thereof, which is found by Ashdown Engineering to be defective.
This warranty shall not apply to the damage of covering, fittings or finishes when affected by
carelessness, accident or extreme climate changes. Nor does it apply to normal wear and tear of
parts such as valves, fuses, light bulbs, speakers, controls etc. Loudspeakers have a 2 year warranty
from original purchase date only.
*Warranty with original purchase only.
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
4.Make sure nothing interferes
with the ventilation of the product
when in use.
Please register this product online so we can make sure we give you years of customer support
through our friendly in-house service centre.
http://www.ashdownmusic.com/contact/register.asp
to operate normally or exhibits
marked change in performance: or
e. The product has been
dropped, or the enclosure
damaged.
GROUNDING INSTRUCTIONS
This product must be grounded
(earthed). If it should malfunction
or break down, 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 or 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 suitable outlet
fitted.
The wires in this mains cord are
coloured in accordance with the
following code:
Green & Yellow - Earth
Blue - Neutral
Brown - Live
CE MARK FOR EUROPEAN
HARMONISED STANDARDS
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 moisture:
or
d. The product does not appear
The lightning flash with the
arrow head symbol within
an equilateral triangle 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 triangle is
intended to alert the user to
the presence of important
operating and
maintenance (servicing) instructions in the
literature accompanying this product.
The CE mark which is attached to
these products means it conforms
to EMC Directive (89/69/EEC), CE
mark Directive (93/68/EEC) and
Low Voltage Directive (72/23/EEC).
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
2
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3
USER MANUAL
AFTER 8 / PERFECT 10
HEADPHONES
LINE IN
MIX
MASTER
TREBLE
MIDDLE
BASS
GAIN
INPUT
USER MANUAL
AFTER 8 / PERFECT 10
FRONT PANEL
Headhopnes
A headphone jack socket is provided to allow stereo headphones to be plugged into the amplifier for silent practice. This cuts
out the main speaker when a jack plug is inserted.
LINE IN
A single balanced line input is provided for play along practice. Used in conjunction with the Headphones socket for silent
practice. Also see, MIX.
POWER
MIX level
Set the level of your Backing Track by using the ‘MIX’ Rotery control provided.
AFTER 8 Front Panel
MASTER level
Use the output level control to adjust the playing volume of the amplifier.
HEADPHONES
HEADPHONES
LINE IN
LINE IN
MIX
MIX
MASTER
MASTER
TREBLE
TREBLE
MIDDLE
MIDDLE
BASS
BASS
GAIN
GAIN
INPUT
INPUT
E.Q.
This passive EQ has bass, middle and treble tone controls.
GAIN
This adds tube emulated overdrive as a tube amp would when adding gain. From slight grit to full on overdrive.
POWER
Input
A single input jack socket is Provided for your instrument. This is a high impedance input designed to perfectly match the
impedance of the pick-ups on a passive bass. It also has sufficient headroom available to allow active basses to be used. Use
the input gain control to adjust for the sensitivity of your instrument.
POWER
PERFECT 10 Front Panel
Rear panel
Fused mains inlet socket
This is for connection of the unit to your countries mains power supply. Please ensure that the type and rating of mains fuse
marked on the rear panel is used when this is replaced.
after eight
Output Power
Input Impedance
Input Signal Range
E.Q.
20watts rms into 8 ohms
1 Meg ohm
100Mv to 10v
Passive Bass, Middle, Treble.
Perfect ten combo
Output Power
40watts rms into 8 ohms
Input Impedance
1 Meg ohm
Input Signal Range 100Mv to 10v
E.Q.
Passive Bass, Middle, Treble.
Back Panel
4
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
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Specifications
Power switch
the power to the unit is turned on with the rear panel power switch. A power led on the front panel will light to indicate that
the amplifier is switched on.
5
USER MANUAL
FIVE 15 / MINI STACK 100
LINE IN
INPUT
BASS
180Hz 340Hz
MIDDLE
1.3KHz 2.6KHz
HEADPHONES
TREBLE
VU
INPUT
MIX
MASTER
Front Panel
515 HEAD REAR PANEL
INPUT
A single input jack socket is Provided for your instrument. This is a high impedance input designed to perfectly match the
impedance of the pick-ups on a passive bass. It also has sufficient headroom available to allow active basses to be used. Use
the input gain control to adjust for the sensitivity of your instrument.
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.
INPUT CONTROL
SPEAKER
OUT sets the signal level through the preamp in conjunction with the INPUT LEVEL VU Meter. This is adjusted to
The INPUT
control
4 OHMS MINIMUM LOAD
give a reading of 0VU on the meter for average playing dynamics with occasional peaks into the red region. Please note that
the setting of this may have to be re-adjusted after modification of the E.Q. controls.
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
515 COMBO REAR PANEL
Inputs
High Input
Low Input
Effects Return
Impedance - 3.9M ohms
Impedance - 10k ohms
Impedance - 22k ohms
Input range 150mv to 20v p - p
Input range 300mv to 40v p - p
Input level 0dbu nominal
Outputs
Tuner Output
Effects Send
D.I.Output
Impedance - 10k ohms
Impedance - 22k ohms
600 ohms balanced
Level 0dbu nominal
Level 0dbu nominal
Level -20dbu nominal
Speaker Outputs
Frequency Response
Minimum Impedance - 4 ohms
-3db at 22hz and 25khz
Equalisation
Bass
Lo Mid
Middle
Hi Mid
Treble
+/- 15db @ 100hz
+/- 15db @ 340hz
+/- 15db @ 660hz
+/- 15db @ 1.6Khz
+/- 15db @ 7khz shelving
Signal to Noise
Distortion
Output Power
Better than 80db (E.Q. Flat)
Less than 0.5% Thd
100watts RMS into 4 ohms.
E.Q.
This consists of BASS, MIDDLE and TREBLE controls with two sliders placed between each control. 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 interposed between these controls set in their centre positions and using only the BASS, MIDDLE
and TREBLE controls to alter the overall tone.
Secondly, if more control is required then the sliders can also be used to tailor the E.Q. in the regions between the main tone
controls. This provides a very versatile Equalisation section, it is simple to understand and operate, 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.
Specifications
515 FRONT PANEL
LINE IN
This Jack input socket allows you to connect an external sound device (i.e Mp3 player, iPod etc.) using a cable (not supplied.)
Headphones
A headphone jack socket is provided to allow stereo headphones to be plugged into the amplifier for silent practice. This cuts
out the main speaker when a jack plug is inserted.
MIX LEVEL
The MIX control blends the overall level of the external sound source.
MASTER LEVEL
The MASTER control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage playing volume.
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.
TO REDUCE THE RISK OF FIRE OR
ELECTRICAL SHOCK DO NOT EXPOSE
THIS EQUIPMENT TO RAIN OR MOISTURE.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
6
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7
USER MANUAL
EB LITE 220
INPUT
BASS
INPUT LEVEL
340Hz
MIDDLE
1.6 KHz
OUTPUT
D.I.
TREBLE
PASSIVE
POST EQ
ACTIVE
INPUT
DEEP
EQ
COMPRESSION
SUB-HARMONICS
SEND
EB LITE 220
Direct inject ( d.I. )
A balanced d.I. Is provided on the front panel xlr socket. This provides a post E.Q. Post effects signal.
The output signal from this xlr socket is set to a level and impedance suitable for connecting directly into a balanced microphone input of a mixing
desk for either direct injection into the pa system or for recording.
Effects send/return
A serial effects loop is provided at a level of 0db. The effects send and return sockets for this are on the front panel 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 send is situated after the E.Q.
VU
BRIGHT
USER MANUAL
RETURN
EFFECTS
TUNER/LINE
OUTPUT
Front Panel
Tuner/line out
This output socket provides a line level signal that can be used either for a permanent connection to a tuner or a line output for connection to other
power amplifiers and speakers.
Output level
The output control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage playing volume.
OUTPUT POWER
Input control
The input control sets the signal level through
the preamp in conjunction with the input level vu meter. This is adjusted to give a reading of 0vu on the
EB LITE 220
meter for average playing
dynamics with occasional peaks into the red region. Please note that the setting of this may have to be re-adjusted after
DESIGNED IN THE UK AND MADE IN P.R.C.
modification of the E.Q. controls.
Deep
With this button in a fixed E.Q. is superimposed on the pre-amp to give a bass boost to the sound. This gives +8db at 50hz.
Bright
With this button in a fixed E.Q. is superimposed on the pre-amp to give a treble boost to the sound. This gives +10db at 10khz.
E.Q.
This button switches the equalisation section in or out i.e. the Bass, Middle and Treble controls and the two rotary controls placed between these.
Equalisation
This consists of bass, middle and treble controls with two more rotary controls 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 340hz and
1.6Khz controls set in their centre positions and using only the bass, middle and treble controls to alter the overall tone.
Secondly, if more control is required then the 340hz and 1.6Khz controls can also be used to tailor the E.Q. In the regions between the main tone
controls.
This provides a very versatile equalisation section, it is simple to understand and operate, 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.
Compression
Adding a small amount of compression gives a fat bottom end to the sound and allows a greater volume of amplification to be used without the
playing peaks distorting the amplifiers output stage.
You will also find that this will add definition to your playing bringing out notes within a run more clearly as it evens out the dynamics of your
playing. A large amount of compression can be used as an effect but it will tend to reduce the dynamics in your playing to such an extent that the
volume of the note will be the same no matter how hard or soft you hit the string.
Compression also adds sustain to notes making them longer before they die away.
The compression level control adjusts the degree of compression applied to the bass signal. For this to function correctly the input level must be
correctly set as described in the input control section above.
When the input level is correctly set there will be hardly any difference in volume between compression in and compression out. This is because the
MAG automatically compensates for the reduction in level that would be apparent when compression is added by increasing the overall gain to
restore the volume to its pre compression level, because of this you may notice an increase in background noise with high compression settings.
Everything possible has been done to make these reliable, minimum service, high quality, long lasting powerful bass amplifiers.
We know you will appreciate the effort that has been put into the design and manufacture of this unit and you will be rewarded in your choice of
bass amplifier by long life and reliability.
Inputs
High Input
Low Input
Effects Return
Impedance - 3.9M ohms
Impedance - 10k ohms
Impedance - 22k ohms
Input range 150mv to 20v p - p
Input range 300mv to 40v p - p
Input level 0dbu nominal
Outputs
Tuner Output
Effects Send
D.I.Output
Impedance - 10k ohms
Impedance - 22k ohms
600 ohms balanced
Level 0dbu nominal
Level 0dbu nominal
Level -20dbu nominal
Speaker Outputs
Frequency Response
Minimum Impedance - 4 ohms
-3db at 22hz and 25khz
Equalisation
Bass
Lo Mid
Middle
Hi Mid
Treble
Deep
Bright
+/- 15db @ 100hz
+/- 15db @ 340hz
+/- 15db @ 660hz
+/- 15db @ 1.6Khz
+/- 15db @ 7khz shelving
+ 8db @ 50hz
+ 10db @ 10khz
Signal to Noise
Distortion
Output Power
Better than 80db (E.Q. Flat)
Less than 0.5% Thd
220watts RMS into 4 ohms.
Specifications
220 WATTS RMS
Inputs
??? WATTS PEAK
There are two choices of instrument input, these are marked passive and active. The passive input is high sensitivity and high impedance to suit
passive bass instruments. The active input is much lower sensitivity and impedance to accurately match the signal from active bass instruments i.e.
Those with a built in battery powered pre-amp.
Compression is switched in/out with the push button adjacent to the compression level control.
Sub harmonics
This section produces sub harmonics an octave below the notes being played. The 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 and you will find in use that only a small degree of this lower octave is required to really fill out the
sound and provide a character that is not possible by any other means.
The degree of sub harmonics is also dependant on the setting of the bass control.
Sub harmonics are switched in/out with the push button below and to the left of the sub harmonics level control.
8
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
www.ashdownmusic.com
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9
USER MANUAL
MAG 300 / 600
INPUT
BASS
INPUT LEVEL
340Hz
MIDDLE
1.6 KHz
OUTPUT
D.I.
TREBLE
VU
BRIGHT
PASSIVE
POST EQ
MAG 300 / 600
Sub harmonics
This section produces sub harmonics an octave below the notes being played. The 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 and you will find in use that only a small degree of this lower octave is required to really fill out the
sound and provide a character that is not possible by any other means.
The degree of sub harmonics is also dependant on the setting of the bass control.
Sub harmonics are switched in/out with the push button below and to the left of the sub harmonics level control.
ACTIVE
INPUT
USER MANUAL
DEEP
EQ
COMPRESSION
OVERDRIVE
SUB-HARMONICS
SEND
RETURN
EFFECTS
TUNER/LINE
OUTPUT
Front Panel
Inputs
OUTPUT
POWER
There are two choices of instrument input, these are
marked
passive and active. The passive input is high sensitivity and high impedance to suit
300 WATTS RMS
passive bass instruments. The active input is much 500
lower
sensitivity
and impedance to accurately match the signal from active bass instruments i.e.
WATTS
PEAK
Those with a built in battery powered pre-amp.
Direct inject ( d.I. )
A balanced d.I. Is provided on the front panel xlr socket. This provides a post E.Q. Post effects signal.
The output signal from this xlr socket is set to a level and impedance suitable for connecting directly into a balanced microphone input of a mixing
desk for either direct injection into the pa system or for recording.
Effects send/return
A serial effects loop is provided at a level of 0db. The effects send and return sockets for this are on the front panel 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 send is situated after the E.Q.
Tuner/line out
This output socket provides a line level signal that can be used either for a permanent connection to a tuner or a line output for connection to other
power amplifiers and speakers.
Input control
The input control sets the signal level through the preamp in conjunction with the input level vu meter. This is adjusted to give a reading of 0vu on the
meter for average playing dynamics with occasional peaks into the red region. Please note that the setting of this may have to be re-adjusted after
MAG LITE 300
modification of the E.Q. DESIGNED
controls.
IN THE UK AND MADE IN P.R.C.
Output level
The output control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage playing volume.
Deep
With this button in a fixed E.Q. is superimposed on the pre-amp to give a bass boost to the sound. This gives +8db at 50hz.
Everything possible has been done to make these reliable, minimum service, high quality, long lasting powerful bass amplifiers.
Bright
With this button in a fixed E.Q. is superimposed on the pre-amp to give a treble boost to the sound. This gives +10db at 10khz.
We know you will appreciate the effort that has been put into the design and manufacture of this unit and you will be rewarded in your choice of
bass amplifier by long life and reliability.
Equalisation
This consists of bass, middle and treble controls with two more rotary controls 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 340hz and
1.6Khz controls set in their centre positions and using only the bass, middle and treble controls to alter the overall tone.
Secondly, if more control is required then the 340hz and 1.6Khz controls can also be used to tailor the E.Q. In the regions between the main tone
controls.
This provides a very versatile equalisation section, it is simple to understand and operate, 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.
Compression
Adding a small amount of compression gives a fat bottom end to the sound and allows a greater volume of amplification to be used without the
playing peaks distorting the amplifiers output stage.
You will also find that this will add definition to your playing bringing out notes within a run more clearly as it evens out the dynamics of your
playing. A large amount of compression can be used as an effect but it will tend to reduce the dynamics in your playing to such an extent that the
volume of the note will be the same no matter how hard or soft you hit the string.
Compression also adds sustain to notes making them longer before they die away.
The compression level control adjusts the degree of compression applied to the bass signal. For this to function correctly the input level must be
correctly set as described in the input control section above.
When the input level is correctly set there will be hardly any difference in volume between compression in and compression out. This is because the
MAG automatically compensates for the reduction in level that would be apparent when compression is added by increasing the overall gain to
restore the volume to its pre compression level, because of this you may notice an increase in background noise with high compression settings.
Compression is switched in/out with the push button adjacent to the compression level control.
Overdrive
This is a valve/tube emulated overdrive that is variable from a slight ‘edge’ or ‘warmth’ through to a fairly aggressive overdrive/distortion effect.
The actual degree of overdrive applied to the bass signal is also dependent on the setting of the input level control. The higher this is set, the greater
level of overdrive can be applied using the overdrives own rotary control.
Overdrive can be switched in with the push button above and to the right of the overdrive rotary control. The amount of drive applied to the
overdrive circuit is adjusted using this rotary control.
The overdriven bass signal is applied in parallel with the dry bass signal to ensure you never lose the full bottom end from your bass. Overdrive is
situated after the compression allowing for a sustained overdriven bass signal to be produced by adding a degree of compression along with the
overdrive itself.
10
Inputs
High Input
Low Input
Effects Return
Impedance - 3.9M ohms
Impedance - 10k ohms
Impedance - 22k ohms
Input range 150mv to 20v p - p
Input range 300mv to 40v p - p
Input level 0dbu nominal
Outputs
Tuner Output
Effects Send
D.I.Output
Impedance - 10k ohms
Impedance - 22k ohms
600 ohms balanced
Level 0dbu nominal
Level 0dbu nominal
Level -20dbu nominal
Speaker Outputs
Frequency Response
Minimum Impedance - 4 ohms
-3db at 22hz and 25khz
Equalisation
Bass
Lo Mid
Middle
Hi Mid
Treble
Deep
Bright
+/- 15db @ 100hz
+/- 15db @ 340hz
+/- 15db @ 660hz
+/- 15db @ 1.6Khz
+/- 15db @ 7khz shelving
+ 8db @ 50hz
+ 10db @ 10khz
Signal to Noise
Distortion
Output Power
Better than 80db (E.Q. Flat)
Less than 0.5% Thd
330watts RMS into 4 ohms. / 575watts RMS into 4 ohms.
Specifications
E.Q.
This button switches the equalisation section in or out i.e. the Bass, Middle and Treble controls and the two rotary controls placed between these.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
www.ashdownmusic.com
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11
OFF
USE NEUTRIK TOUCHPROOF CONECTORS ONLY!
DANGER OF SERIOUS INJURY OR DEATH! LETHAL VOLTAGES AT SPEAKER OUT SOCKETS! THIS UNIT CONTAINS A
VOLTAGE DOUBLER WHICH MEANS THAT THE OUTPUT IS GREATER THAN THE MAINS SUPPLY VOLTAGE.
JACK PLUGS MUST NOT BE USED!
MODEL No:-
ABM 1000
SERIAL No:FOOTSWITCH LINE INPUT
ASHDOWN 4 WAY
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, THIS APPARATUS SHOULD NOT BE EXPOSED TO RAIN OR
MOISTURE AND OBJECTS FILLED WITH LIQUIDS SUCH AS VASES,
SHOULD NOT BE PLACED ON THIS APPARATUS.
TO PREVENT THE RISK OF FIRE HAZZARD, REPLACE WITH SAME
TYPE 250 VOLT FUSE.
FUSE
115V
T8 A H
AVIS: DANS LE BUT DE REDUIRE LES RISQUES D’INCENDIE OU
DE DECHARGE ELECTRIQUE, CET APPREIL NE DOIT PAS ETRE
EXPOSE A LA PLUIE OU A L’HUMIDITE ET AUCUN OBJET REMPLI
DE LIQUIDE, TEL QU’UN VASE, NE DOIT ETRE POSE SUR CELUI-CI.
REMPLACER PAR UNFUSIBLE DE MEME TYPE ET DE 250 VOLTS.
230V
T5 A H
FX SEND
FX RETURN
MINIMUM LOAD 4 OHMS
50/60Hz V A.C.
MANUFACTURED IN THE UK BY:ASHDOWN ENGINEERING
USER MANUAL
ABM 1000 / 2000
POWER OUTPUT
630W RMS 1300W PEAK @ 8 OHMS
1000W RMS 2000W PEAK @ 4 OHMS
ABM 1000 / 2000
SUB HARMONICS
This section produces Sub Harmonics an octave below the notes being played. The 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 and you will find in use that only a small degree of this lower octave is required to really fill out the
sound and provide a character that is not possible by any other means.
The degree of Sub Harmonics is also dependant on the setting of the BASS control.
VU
Front Panel
INPUT
There is a single instrument input provided linked to a PASSIVE/ACTIVE selector switch. The Passive input (switch out) is high sensitivity and also
high impedance to suit the output from PASSIVE basses. The Active input (switch in) is low sensitivity and lower impedance to suit the output from
ACTIVE basses.
INPUT CONTROL
The INPUT control sets the signal level through the preamp in conjunction with the INPUT LEVEL VU Meter. This is adjusted to give a reading of 0VU
on the meter for average playing dynamics with occasional peaks into the red region. Please note that the setting of this may have to be re-adjusted
after modification of the EQ controls.
PUSH FLAT / SHAPE
With this button in its OUT position a fixed E.Q. is superimposed on the preamp to give a bright but punchy character to the sound. Pushing this
button IN returns the preamp to a Flat frequency response.
This function may also be controlled from a footswitch. For the footswitch to operate this button must be in its OUT position.
VALVE DRIVE
This routes the signal either through a clean Solid State amplification section (control on zero) or through a Dual Triode Tube amplification/overdrive
section in order to add either tonal character i.e. warmth with the control set at 9 o’clock, a slight edge in the sound at 12 0’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 provided by this control will also depend on the setting of the INPUT control.
VALVE DRIVE IN/OUT
This push button switches the valve drive section IN or OUT. This function may also be controlled from the Ashdown 4 way footswitch. For the
footswitch to operate this button must be in its OUT position.
E.Q. IN / OUT - This push button switches the Equalisation section IN or OUT i.e. the Bass, Middle and Treble controls plus the two sets of sliders
placed between each of these.
This function may also be controlled from the Ashdown 4 way footswitch. 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 placed between each control. 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 interposed between these controls set in their centre positions and using only the BASS, MIDDLE and TREBLE controls to alter the overall tone.
Secondly, if more control is required then the sliders can also be used to tailor the E.Q. in the regions between the main tone controls. This provides
a very versatile Equalisation section, it is simple to understand and operate, 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.
COMPRESSION
Adding a small amount of compression gives a fat bottom end to the sound and allows a greater volume of amplification to be used without the
playing peaks distorting the amplifiers output stage. You will also find that this will add definition to your playing bringing out notes within a run
more clearly as it evens out the dynamics of your playing.
A large amount of compression can be used as an effect but it will tend to reduce the dynamics in your playing to such an extent that the volume of
the note will be the same no matter how hard or soft you hit the string. Compression also adds sustain to notes making them longer before they die
away.
The Compression Level control adjusts the degree of compression applied to the bass signal. For this to function correctly the Input Level must be
correctly set as described in the INPUT CONTROL section (left).
When the Input Level is correctly set there will be hardly any difference in volume between Compression IN and Compression OUT. This is because
the amplifier automatically compensates for the reduction in level that would be apparent when Compression is added by increasing the overall gain
to restore the volume to its pre compression level, because of this you may notice an increase in background noise with high compression settings.
COMPRESSION IN/OUT
This push button switches the Compression IN or OUT. This function may also be controlled from the Ashdown 4 way footswitch. For the footswitch
to operate this button must be in its OUT position.
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USER MANUAL
DIRECT INJECT (D.I.)
A balanced D.I. is provided on a latching XLR socket. This has a push button placed below it that allows the user to choose either a Pre E.Q. signal
(button pushed IN) or a Post E.Q. Post Sub and effects signal (button OUT).
The output signal 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. This 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 signal ground or this will connect the system to chassis ground of
the ABM and may cause problems with hum.
PUSH TO MUTE
When 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 LINE Out socket as well. This leaves the output from the TUNER socket still available to allow muted tuning. An LED is provided next to this switch
to indicate when the amplifier is muted. This function operates only from the front panel MUTE push switch. i.e. pressing this button mutes all sound
from the amplifier and allows a tuner connected to the TUNER socket to operate for silent tuning. Release the button and you are back in action
again.
TUNER OUT
This output socket provides a line level signal that can be used for a permanent connection to a tuner.
The signal from this socket remains when all other outputs from the amplifier are Muted allowing all sound from the amplifier to be silenced while
tuning is in progress.
LINE OUT
This output socket provides a line level/post Output Level control signal for connection to an external power amplifier driving additional speaker
cabinets.
OUTPUT LEVEL
The OUTPUT control adjusts the overall level of the amplifier. Adjust this for your preferred overall stage playing volume.
INPUTS
High Input
Low Input Line Input Effects Return
Impedance 3.9M Ohms
Impedance 10K Ohms
Impedance 22K Ohms
Impedance 22K Ohms
Input range 150mV to 20V p-p
Input range 300mV to 40V p-p
Input level 0dBu nominal
Input level 0dBu nominal
OUTPUTS
Tuner Output Line Output Effects Send
D.I. Output
Impedance 1K Ohms
Impedance 10K Ohms
Impedance 22K Ohms
600 Ohms balanced
Level 0dBu nominal
Level 0dBu nominal
Level 0dBu nominal
Level -20dBu nominal
(rackmount preamp only) Low Pass (RPM-1 only) Impedance 1K Ohms
High Pass (RPM-1 only) Impedance 1K Ohms
Full Range (RPM-1 only)
Impedance 1K Ohms
Level switched 0/+4dBU
Level switched 0/+4dBU
Level switched 0/+4dBU
EQUALISATION
Shape (Push Flat) Bass
Middle
Treble
Slider1 Slider 2 Slider 3 Slider 4
+8dB @ 50Hz & 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
+/-15dB @ 45Hz
+/-15dB @ 660Hz
+/-15dB @ 7kHz shelving
+/-15dB @ 110Hz
+/-15dB @ 340Hz
+/-15dB @ 1.3kHz
+/-15dB @ 2.6kHz
Frequency Response -3dB at 17Hz and 30KHz
Rackmount Preamp Crossover
Speaker Outputs
Output Power
Variable between 35 and 160Hz
Minimum impedance 4 Ohms
1000watts RMS into 4 ohms. / 2000watts RMS into 4 ohms.
Specifications
ON
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
Ashdown Amplifiers reserve the right to change specifications without notice. E & O E. All contents © Ashdown 2011.
www.ashdownmusic.com
www.ashdownmusic.com
13
NOTES
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NOTES
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Ashdown Design & Marketing Ltd
Stevens Farm (The Stables), Mashbury Road, Chignal St James, Chelmsford, Essex CM1 4TX