Marshall AS100D owners Manual

1

From the Chairman

I would like to thank you personally for selecting the AS100D,

Acoustic Soloist combo.

The Marshall name has been associated with many fine products
over the years and our commitment to quality remains as constant
today as it did at the birth of Marshall Amplification, back in 1962.

In the case of the Acoustic Soloist amplifier range, much time and
research has gone into making their sound as natural as possible.
The design team, being guitarists, fully understand the needs of the
player and have brought their expertise fully to bear on these
products.

The AS100D also marks a significant milestone in Marshall
amplifier history as it was the first model to carry on board digital
effects, to give you the highest possible sound quality. You can also
rest assured that the Marshall hallmarks of design and engineering
excellence come as standard, ensuring that this amplifier will stand
the test of time, even after constant use.

I strongly suggest that you read this handbook carefully before
using your new amplifier, then keep it on hand for future reference.

I am certain that you will derive great enjoyment from your
Marshall Acoustic Soloist combo and wish you every success with it.

Yours Sincerely,

English

English

Introduction

The AS100D is a comprehensively featured 100 Watt combo amplifier, specially designed for use with a variety of
acoustic instruments. Between its four channels, this combo has the flexibility to handle instruments with piezo
transducers or magnetic pick-ups, plus microphones for both vocal and instrument reproduction. Its 2 x 50 Watt
stereo configuration gives you enough power to perform on stage with superb clarity, while the provision of a
balanced line out allows direct connection to an external PA system for larger concert venues.

The built-in digital effects add an entirely new dimension to the range of sounds available. If you want to add
further effects, then there is a parallel effects loop with level control.

One of the most difficult aspects of amplifying acoustic instruments is feedback. To help you eliminate this, the
AS100D features several ‘anti-feedback’ controls, including a Phase switch for each channel and frequency
controllable Notch Filters with selectable extra depth for channels 1 and 2. It also features a fourth channel suitable
for CD/MD, tape player or a drum machine if needed.

For clear and detailed performance, the AS100D is loaded with two 8" speakers and two high fidelity polymer dome
tweeters. There is also an internal limiter which allows you to push the maximum level from the stereo 50 Watt
output stage, whilst remaining distortion free.

Compact and portable, the AS100D offers great flexibility and is the ideal amplifier for the acoustic player who
wants the highest quality performance and natural tonal reproduction.

Channel 1 - Acoustic Instrument

1. Input Jack

This input will accept a normal mono jack lead
from a piezo transducer or magnetic pick-up.

Plug the lead from your guitar in here to connect
you to channel 1.

This is also a stereo input designed specially for
those acoustic instruments which feature a variety
of pickups (e.g. magnetic and transducer) fed
through a single stereo cable. In this mode the
signal from the ring of the stereo jack is
automatically routed through to channel 2 by
selecting the Link Ch 1 switch (item 11). This
allows separate pre-amp control for the two
different pick-ups.

2. Phase Switch

Reverses the phase of the signal to cut out
unwanted resonances caused by the instrument
and speakers being in phase.

Ensure that you test this in the position where you
will actually perform.

3. Gain Switch

Increases the amount of gain to the input and is
extremely useful for boosting the signal of pick-ups
with very low output levels.

4. Volume Control

Adjusts the volume level of channel 1.

5. Bass Control

Adjusts the amount of bottom end or bass in your
sound. Too much bass can cause unwanted
feedback, therefore care should be taken when
setting this control. The best position to start is 12
o’clock, then adjust from there as desired.

6. Parametric Mid Control

Cuts or boosts the mid-range of your sound. This
control works in conjunction with item 7 (mid
frequency control) to give the maximum possible
control over the all important mid-range of your
instrument’s tonal spectrum.

7. Mid Frequency Control

Adjusts the frequency of the mid-range control
(item 6).

8. Treble Control

Adjusts the high end or treble frequencies in your
tone. Again, care should be taken when setting this
control as too much treble will cause high pitched
feedback. The starting point of the 12 o’clock
position is best.

Channel 2 - Acoustic Instrument and
Microphone

9. Instrument Input

Mono jack input. Plug the lead from your guitar in
here to connect to channel 2 only.

Front Panel Features

The AS100D provides two separate pre-amps to capture the best sound out of your acoustic instrument.
Having two channels dedicated to acoustic instruments allows you to mix two types of commonly used pick-up
(piezo, magnetic or microphone), between either two mono jacks or a stereo jack.

10. Microphone Input

XLR type socket to connect a microphone to
channel 2.

11. Link Channel 1 Switch

Switch to link channel 2 (when an instrument with
a single stereo jack is connected) to the stereo
input of channel 1 (see item 1). Channel 2 level
and EQ settings will affect the signal connected to
the ring of the stereo input jack. (item 1). Refer to
block diagram.

12. Contour Switch

Changes the contour of the channel EQ by cutting
the mid-range by a predetermined amount.

13. Phantom Switch

If you require phantom power for your condenser
microphone, pressing this switch provides +15V.

14. Phase Switch

Reverses the phase of the signal to cut out
unwanted resonances caused by the instrument
and speakers being in phase. This can considerably
reduce the amount of low frequency acoustic
feedback.

Ensure that you test this in the position where you
will actually perform.

15. Volume Control

Adjusts the volume level of channel 2.

16. Bass Control

Adjusts the amount of bottom end or bass in your
sound. Too much bass can cause unwanted
feedback, therefore care should be taken when
setting this control. The best position to start is
12 o’clock, then adjust from there as desired.

17. Treble Control

Adjusts the high end or treble frequencies in your
tone. Again, care should be taken when setting this
control as too much treble will cause high pitched
feedback. The starting point of the 12 o’clock
position is best, then adjust from there to suit your
own preference.

Channel 1 and Channel 2 Mix
Anti Feedback Section

18. ‘On’ Switch

Activates the Anti Feedback filters (items 20 & 21)
for both acoustic instrument channels.

19. Depth Switch

Increases the depth for both notch filter controls
20 & 21.

20. Rotary Feedback Filter (Sweep 1)

Sweeps the band of frequencies most likely to
cause body resonance (the main offending
feedback frequencies) from 50Hz - 250Hz and
reduce it when selected.

21. Rotary Feedback Filter (Sweep 2)

Provides a second sweep of a broader band of
frequencies (60Hz - 650Hz) to help remove a
second offending frequency.

TIP: In order to select and eliminate the offending
frequencies, select the point where the feedback
just appears and move the frequency control until
it disappears. Next, increase the gain level until the
feedback reappears and adjust the frequency again,
then reduce the level slightly.

Channel 1 and Channel 2 Mix
Effects Switches

22. Internal Effects Switch

Activates the internal stereo digital effects section
for the acoustic instrument channels.

23. External Effects Switch

Activates the external effects loop for the acoustic
instrument channels.

Channel 3 - Microphone

24. Microphone Input

XLR type socket to take the input from an external
microphone for either vocal or instrument
reproduction.

25. Phase Switch

Reverses the phase of the signal to cut out
unwanted resonances caused by the instrument
and speakers being in phase.

Ensure that you test this in the position where you
will actually perform.

26. Phantom Switch

If you require phantom power for your condenser
microphone, pressing this switch provides +15V.

27. Volume Control

Adjusts the volume level of channel 3.

28. Bass Control

Adjusts the amount of bottom end or bass in your
sound. Too much bass can cause unwanted
feedback, therefore care should be taken when
setting this control. The best position to start is
12 o’clock, then adjust from there as desired.

29. Treble Control

Adjusts the high end or treble frequencies in your
tone. Again, care should be taken when setting this
control as too much treble will cause high pitched
feedback. The starting point of the 12 o’clock
position is best, then adjust from there to suit your
own preference.

30. Internal Effects Mix Control

Selects the amount of effect from the built-in
digital effects for channel 3 only.

32

English

English

31. External Effects Mix Control

Selects the amount of effect on channel 3 from any
external effects processor connected through the
FX Loop.

Channel 4 - Auxiliary

32. Phono Inputs

Left and right phono sockets for connection to
CD/MD/tape player, drum machine or other backing
equipment. This channel works in stereo.

33. Volume Control

Controls the volume level of the auxiliary channel.

Stereo Digital Effects

34. Program Select Control

Rotary control to select one of the 16 digital effects
programs.

35. Parameter Adjust Control

Adjusts the main parameter of the effect selected
by Program Select Control (item 34). The main
parameter is decay time for all Reverb and Delay
programs. For Chorus, Flange and Modulation
programs, it is the Speed.

36. Effects Level Control

Controls the amount of the digital effects signal in
the mix.

Master Volume

37. Master Volume Control

Controls the overall volume level of the AS100D.

38. Power Switch

This is the On/Off switch for the mains power to
the amplifier. When it is switched ‘On’, the switch
will light. Please ensure the amplifier is switched
off and unplugged from the mains electricity
supply before being moved.

Rear Panel Features

1. Mains Input

Your amp is provided with a detachable mains
(power) lead that is connected here. The specific
mains input voltage rating that your amplifier has
been built for is clearly marked on the back panel.
Before connecting for the first time, please ensure
that your amplifier is compatible with your
electricity supply. If you have any doubts, please
get advice from a qualified person. Your Marshall
dealer can help you in this respect.

2. Footswitch Jack Socket

For connection to the supplied remote footswitch
which provides switching of both internal and
external effects.

3. Effects Send

Sends the signal from the AS100D to the input of
an external effects processor.

4. Effects Level Control

Rotary control to adjust the external effects return
level.

5. Stereo Effects Return

Left / Mono and Right returns to accept the output
from an external effects processor. If the processor
is mono (such as a floor pedal), connect to the
Left / Mono return jack.

6. D.I. Outputs

Left and Right direct outputs, fully balanced for
connection to an external PA mixing desk.

7. Line Out

Unbalanced Left and Right direct outputs for
connection to recording or other outboard
equipment.

Power Output 100W RMS into 4 Ω (50W per side)

Potencia de salida 100W RMS sobre 4 Ω (50W per side)
Ausgangsleistung 100W RMS an 4 Ω (50W per side)
Puissance de sortie 100W RMS sous 4 Ohms (50W per side)

100W RMS / 4 Ω

Main Guitar • Input Impedance 1 MΩ

Impedancia de entrada principal de guitarra 1 MΩ
Guitar • Input Eingangsimpedanz 1 M Ω
Impédance d'entrée 1 M Ω

1 M Ω

Line Output • Level -10dBV * see Note 1

Nivel de salida -10dBV * ver nota 1
Line Output • Ausgangspegel -10dBV * siehe Hinweis 1
Niveau de sortie -10dBV * voir note 1

-10dBV

FX Send • Level -10dBV, +4dBV * see Note 2

Nivel de envío FX -10dBV, +4dBV * ver nota 2
FX Send • Ausgangspegel -10dBV, +4dBV * siehe Hinweis 2
Niveau de sortie d'effet -10dBV, +4dBV * voir note 2

-10dBV, +4dBV

Microphone • Input Impedance 1 k Ω

Microphone • Impedencia 1 k Ω
Microphone • Input Eingangsimpedanz 1 k Ω
Microphone • Impédance d’entrée 1 k Ω

1 k Ω

Weight 21kg

Peso 21kg
Gewicht 21kg
Poids 21kg

21kg

Size (mm) 600 x 540 x 261

Tamaño (mm) 600 x 540 x 261
Maße (mm) 600 x 540 x 261
Taille (mm) 600 x 540 x 261

600 x 540 x 261

➲

EUROPE UNIQUEMENT - Remarque: Ce matériel a été testé: il est conforme aux directives européennes EMC (Environnement

E1, E2 et E3 EN 55103-1/2) et aux directives sur les appareils basse tension.

➲

EUROPE UNIQUEMENT - Remarque: La consommation en crête du AS100D est de 21 ampères.

Note: Cet équipement a été testé et approuvé conforme aux normes fédérales sur les appareils numériques de Classe B selon le

résolution fédérale américaine. Ces limites sont désignées pour fournir une protection raisonnable contre les interférence en installation
résidentielle. Cet appareil génère, utilise et peut émettre des fréquences radio et, en cas d’installation ou d’utilisation différente de ce qui
est préconisé dans ce mode d’emploi, il peut entraver la bonne réception des équipements de télévision ou radio avoisinants. Cependant,
nous ne pouvons garantir l’absence d’interférences selon l’application utilisée. Si cet appareil est source d’interférence (vérifiez en plaçant
l’appareil sous ou hors tension à plusieurs reprises), nous vous encourageons à appliquer l’une des mesures suivantes:

◆ Réorientez ou déplacez l’antenne de réception.

◆ Augmentez la distance entre l’appareil et le récepteur.

◆ Connectez le matériel sur une ligne secteur différente de celle du récepteur.

◆ Consultez votre revendeur ou un spécialiste TV/Radio.

➲

EUROPE ONLY - Note:This equipment has been tested and found to comply with the requirements of the EMC directive

(Environments E1, E2 and E3 EN 55103-1/2) and the Low Voltage directive in the E.U.

➲

EUROPE ONLY - Note:The Peak Inrush current for the AS100D is 21 amps.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the following measures:

◆ Reorient or relocate the receiving antenna.

◆ Increase the separation between the equipment and the receiver.

◆ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

◆ Consult the dealer or an experienced radio/TV technician for help.

➲

SÓLO PARA EUROPA - Nota: Este equipo ha sido examinado y se ha comprobado que cumple la normativa EMC (Apartados

E1, E2 y E3 EN 55103-1/2) y la normativa de Baja Tensión de la U.E.

➲

SÓLO PARA EUROPA - Nota: La corriente de pico en el encendido del AS100D es de 21 amperios.

Nota: Este equipo ha sido examinado y calificado como aparato digital de Clase B, de acuerdo con la parte 15 de la normativa FCC. Esta

calificación fue definida para garantizar una protección razonable contra interferencias en una instalación doméstica. Este equipo genera,
utiliza y puede radiar energía de radiofrecuencia y, si no se instala y utiliza de acuerdo con las instrucciones, puede producir
interferencias indeseadas a las radiotransmisiones. De todas formas, no hay una garantía total de que no ocurran interferencias en
ciertas instalaciones. Si este equipo produce interferencias perjudiciales a la recepción en aparatos de radio o televisión, lo cual se puede
deducir observando el efecto al encender y apagar el equipo, se sugiere al usuario que intente corregir estas interferencias siguiendo una
o varias de las siguientes medidas:

◆ Reorientar o reubicar la antena receptora de la radio o televisión.

◆ Aumentar la separación entre el equipo y el aparato receptor.

◆ Conectar el equipo en un enchufe de un circuito de alimentación distinto de aquel al que va conectado el receptor.

◆ Consultar con el vendedor o con un técnico experto en radio y TV.

➲

GILT NUR FÜR EUROPA - Hinweis: Dieses Gerät entspricht den Anforderungen der EMC Richtlinien (Anlagen E1, E2

und E3 EN 55103-1/2) und den Anweisungen für Niederspannung der E.U und wurde entsprechend getestet.

➲

GILT NUR FÜR EUROPA - Hinweis: Die Stromspitze beim Einschalten liegt beim AS100D bei 21 Ampere.

Die entsprechenden Grenzwerte stellen einen ausreichenden Schutz vor störenden Interferenzen beim Gebrauch im Wohnbereich
sicher. Dieses Gerät generiert und arbeitet im Radiofrequenzbereich und kann eine entsprechende Strahlung aussenden. Wird das
Gerät nicht entsprechend den Bedienungsanweisungen benutzt, so kann es zu Störungen beim Empfang von Radio- oder TV­Signalen kommen. Es ist grundsätzlich nicht auszuschließen, daß es bei einigen Anwendungen zu derartigen Störungen kommen
kann. Sollte dies einmal der Fall sein (zur Überprüfung sollte das Gerät an- und ausgeschaltet werden) so schlagen wir die
folgenden Lösungsansätze vor:

◆ Positioniere die Empfangsantenne anders.

◆ Vergrössere den Abstand zwischen dem Verstärker und dem Empfangsgerät.

◆ Benutze einen anderen Netzanschluß für beide Geräte.

◆ Konsultiere einen Händler oder geschulten Radio-Fernsehtechniker.

21

* Note 1: Recommended for connection to inputs with
input impedance >20K Ω

* Nota 1: Se recomienda conectar a entradas con
impedancia superior a 20K Ω

* Hinweis 1: Empfohlen für Inputs mit eine
Eingangsimpedanz >20K Ω

* Note 1: Recommandée pour une impédance d'entrée
supérieure à 20K Ω

* Note 2: Recommended for use with line level equipment
(i.e. rack processor etc.)

* Nota 2: Se recomienda utilizar con equipo con nivel
nominal de línea ( como procesadores de rack, etc...)

* Hinweis 2: Empfohlen für die Benutzung mit Equipment auf
Linepegel (z.B.Studioeffektgeräte etc.)

* Note 2: Recommandée pour des niveaux de ligne de type
processeur d'effets en rack.

AS100D Technical Specification

English

Español

Deutsch

Français

20

Technical

TécnicasTechnische

Techniques

Keep these instructions • Conserve estas instrucciones • Bewahre diese Bedienungsanleitung gut auf.

Conservez toutes ces instructions •

2322

Instrume

Treble

E

y

S

Volume

Powe

Gain

e

Phase

Ph

Ph

m

C

L

Ph

I

X

E

FX

Inp

On

D

h

Halls

R

Plates

N

C

Fl

D

y

C

Modulatio

1

3

6

7

9

10

11

1

13

14

15

16

Stereo Digital Effects

Master

Program

FX

Ch 1

2 Anti-Feedback

Acoustic Channel 1

Acoustic Channel 2

Aux

Microphone

Vol

L

l

Adj

Volume

BassVolume

V

e

Bass

+

id+T

+

0

10

0100100100100

10

01001001060Hz

650Hz

50Hz

250Hz

250Hz

2.5kHz

D.I. Output

Line Out

Effects Loop

Mains Input

1

9 10 12 13 15 16 17 24 27 28 29 30 31 32 33 38

2 34 5 6 7 8 20 21 34 35 36 3718 19 22 23

1411 2625

1 2 3 4 5 6 7

AS100D Front Panel

AS100D Rear Panel

Acoustic Channel 1

Phas

ut

olume

Bass

Acoustic Channel 2

ink Ch1

anto

nt Microphone

ontour

This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired operation.

This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

Ch 1

&2 Anti-Feedback

M

Mid Frequenc

reble

Trebl

ept

weep 1 Sweep 2

ase

antom

WARNING!:

!

THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.

AVIS!:

ELECTRIQUES, N’EXPOSEZ JAMAIS CET APPAREILA L’HUMIDITE OU ALAPLUIE. CONNECTER CET APPAREIL A LATERRE.

SHOCK HAZARD. DO NOT TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE

RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES RISQUES D’INCENDIE ET DE DECHARGES

nt. F

Program

FX

xt.

-

4 -

-

2

Ch / Dly / Room

ooms
on Linear

horus

ange
ela
horus Room

n

Stereo Digital Effects

9

8

10

7

6

5

4

3

2

16

1

11

12

13

14

15

ust

eve

Microphone

Aux

Master

Acoustic

Soloist

ume

O

I

r

Effects Loop

xt. FXInt. FX

CAUTION!:

REFER SERVICING QUALIFIED SERVICE PERSONNEL.

ATTENTION!:

AUCUNE PIECE SUSCEPTIBLE D’ETRE REPAREE PAR VOS SOINS. FAITES TOUJOURS APPELAUN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.

REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS

POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE COUVERCLE. CETAPPAREIL NE COMPORTE

Input

D.I. Output

Line Out

Designed, Engineered & Quality Controlled by

Marshall Amplification plc, Bletchley,

Milton Keynes, England.

Made in China

Output 2x50 Watts RMS into 4 Ω

-

+ Left / Mono Right Left Right Left Right

Level ReturnSendFootswitch

MODEL: AS100D

Mains Input

280 Watts

120V ~ 60Hz

2524

AS100D Block Diagram

INSTRUMENT

TIP

RING

CH1

AUX
MIC

CH2

PHANTOM 15V

MIC

AUX

CH3

GAIN

VOL

LOW MID FREQ HIGH

VOL

VOL

LOW HIGH

LOW HIGH

CONTOUR

-1

-1

PHASE

-1

PHASE

REVERB

EXT. FX

PHASE

DEPTH

SWEEP 1 SWEEP 2

EXT. FX

REVERB

DIGITAL

REVERB

ADJUST

SEND

RETURN

RIGHT

PROGRAM LEVEL

LEVEL

(BACK)

NOTCH

R

TAPE IN

L

FOOTSWITCH

CH4

VOL

RIGHT

LEFT

D.I. RIGHT

LINE OUT RIGHT

MASTER

LIMITER

LINE OUT LEFT

D.I. LEFT

P.A.

P.A.

TWEETER

CROSSOVER

DRIVER

TWEETER

CROSSOVER

DRIVER

L-MONO