ENGLISH

From Jim Marshall
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 is 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,
WARNING! - Important safety instructions
WARNING: This apparatus must be earthed!
A PLEASE read this instruction manual carefully before switching on. B ALWAYS use the supplied mains lead, if a replacement is required please contact your authorised Marshall Dealer. C NEVER attempt to by-pass the fuses or fit ones of the incorrect value. D DO NOT attempt to remove the amplifier chassis, there are no user serviceable parts. E Refer all servicing to qualified service personnel including replacement of fuses and valves. Servicing is required when the apparatus has been damaged in any way, such as the power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally or has been dropped. F NEVER use an amplifier in damp or wet conditions. G ALWAYS unplug this apparatus during lightning storms or when unused for long periods of time. H Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles and at the point where they exit from the apparatus. I DO NOT switch the amplifier on without the loudspeaker connected. Note: This equipment has been tested and found to comply with the requirements of the EMC directive (Environments E1, E2 and E3) and the Low Voltage directive in the E.U. EUROPE ONLY - Note: The Peak Inrush current for the AS100D is 21 amps. 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. CAUTION: Any changes or modifications not expressly approved by the party responsible for compliance may void the users authority to operate the equipment. Note: It is recomended that all audio cables used to connect to the AS100D are of a high quality screen type. These should not exceed 10 metres in length. WARNING : Do not obstruct ventilation grille and always ensure free movement of air around the amplifier! USA ONLY - DO NOT defeat the purpose of the polarised or grounding type plug. A polarised plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

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 for Reverb, Delay and Chorus 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.
AS100D Front Panel Features
The AS100D provides two separate preamps 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.

3. Gain Switch

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

4. Volume Control

Adjusts the volume level of channel 1.
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 speciality 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 17). This allows separate preamp control for the two different pick ups.

5. Bass Control

Adjusts the amount of bottom end or bass in your sound. Too much bass can cause unwanted feed back, therefore care should be taken when setting this control. The best position to start is 12 oclock, 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 instruments tonal spectrum.

7. Mid Frequency Control

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

2. Phase Switch

Follow all instructions and heed all warnings KEEP THESE INSTRUCTIONS !
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.

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 oclock position is best.
AS100D Front Panel Features 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.
AS100D Front Panel Features Channel 1 and Channel 2 mix Anti Feedback Section.

18. On Switch

Activates the Anti Feedback filters (items 21 & 22) for both acoustic instrument channels.

27. Volume Control

Adjusts the volume level of channel 3.

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.

28. Bass Control

10. Microphone Input
XLR type socket to connect a microphone to channel 2.

19. Depth Switch

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

33. Volume Control

Controls the volume level of the auxiliary channel.

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 oclock position is best, then adjust from there to suit your own preference.

Stereo Digital Effects

34. Program Select Control
Rotary control to select one of the 16 digital effects programs.
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.
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.
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.
21. Rotary Feedback Filter (Sweep 2)
Provides a second sweep of a broader band of frequencies (60Hz - 650Hz) to help remove the 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 back off the level slightly.
30. Internal Effects Mix Control
Selects the amount of effect from the built in digital effects for channel 3 only.

12. Contour Switch

Changes the contour of the channel EQ by cutting the Mid by a predetermined amount.
31. External Effects Mix Control
Selects the amount of effect on channel 3 from any external effects processor connected through the FX Loop.

13. Phantom Switch

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

36. Effects Level Control
Controls the amount of the digital effects signal in the mix.

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.

Master Volume

37. Master Volume Control
Controls the overall volume level of the AS100D.
Channel 1 and Channel 2 mix Effects Switches
22. Internal Effects Switch
Activates the internal stereo digital effects section for the acoustic instrument channels.
AS100D Rear Panel Features

1. Mains Input

Plug the mains power cord provided in here

15. Volume Control

Adjusts the volume level of channel 2.
23. External Effects Switch
Activates the external effects loop for the acoustic instrument channels.

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.

16. Bass Control

Channel 3 - Microphone

24. Microphone Input

XLR type socket to take the input from an external microphone for either vocal or instrument reproduction.
2. Footswitch Jack Socket
For connection to the supplied remote footswitch which provides switching of both internal and external effects.

6. D.I. Outputs

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

3. Effects Send

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

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 oclock position is best.then adjust from there to suit your own preference.

25. Phase Switch

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

7. Line Out

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

4. Effects Level Control

Rotary control to adjust the external effects return level.

26. Phantom Switch

AS100D Front Panel

Acoustic Channel 1

Anti-Feedback

Program

1 - 3 Halls 4 - 6 Rooms 7 - 9 Plates 10 Non Linear 11 Chorus 12 Flange 13 Delay 14 Chorus Room 15 Ch/Dly/Room 16 Modulation

Master

Int. FX

2.5kHz

Ext. FX

Volume

Mid Frequency

Treble

Sweep 1

Sweep 2

Adjust

Acoustic Channel 2

Microphone

Link Ch1

Phase R

Contour Phantom

Phantom

Instrument

AS100D Rear Panel
NOTE: 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.

WARNING!: AVIS!:

SHOCK HAZARD. DO NOT OPEN. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. THIS APPARATUS MUST BE EARTHED.

CAUTION!:

TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
Output 2x50 2x50 Watts RMS 4 Output Watts RMS into 4
RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR. POUR EVITER LES RISQUES DINCENDIE ET DE DECHARGES ELECTRIQUES, NEXPOSEZ JAMAIS CET APPAREIL A LHUMIDITE OU A LA PLUIE. CONNECTER CET APPAREIL A LA TERRE.
ATTENTION!: POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES, NE PAS OUVRIR LE COUVERCLE. CET APPARRIL NE COMPORTE
AUCUNE PIECE SUSCEPTIBLE DETRE REPAREE PAR VOS SOINS. FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION.
D.I. Output Effects Loop Line Out

Made in England by:

Mains Input
Marshall Amplification plc, Bletchley, Milton Keynes, England.

Footswitch

280 Watts 120V ~ 60 Hz

Send Level

Left / Mono

Return

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.

English

Front Panel Features From the Chairman
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.
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,
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.

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 oclock, 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 instruments tonal spectrum.

7. Mid Frequency Control

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

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.

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 oclock position is best.

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.
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.

4. Volume Control

Adjusts the volume level of channel 1.

10. Microphone Input

XLR type socket to connect a microphone to channel 2.
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.
31. External Effects Mix Control
Selects the amount of effect on channel 3 from any external effects processor connected through the FX Loop.
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.
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.

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.

36. Effects Level Control
Controls the amount of the digital effects signal in the mix.

12. Contour Switch

Changes the contour of the channel EQ by cutting the mid-range by a predetermined amount.
Channel 1 and Channel 2 Mix Effects Switches
22. Internal Effects Switch
Activates the internal stereo digital effects section for the acoustic instrument channels.

33. Volume Control

Controls the volume level of the auxiliary channel.

Master Volume

37. Master Volume Control
Controls the overall volume level of the AS100D.

13. Phantom Switch

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

Stereo Digital Effects

34. Program Select Control
Rotary control to select one of the 16 digital effects programs.

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.

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.
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.

15. Volume Control

Adjusts the volume level of channel 2.

25. Phase Switch

16. Bass Control

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.

4. Effects Level Control

Rotary control to adjust the external effects return level.

26. Phantom Switch

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.

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 oclock position is best, then adjust from there to suit your own preference.

27. Volume Control

Adjusts the volume level of channel 3.

28. Bass Control

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

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.
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.

3. Effects Send

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

29. Treble Control

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.
30. Internal Effects Mix Control
Selects the amount of effect from the built-in digital effects for channel 3 only.
AS100D Technical Specification

Power Output

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

Technical

Main Guitar Input Impedance
Impedancia de entrada principal de guitarra Guitar Input Eingangsimpedanz Impdance d'entre

1 M 1 M 1 M 1 M

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.

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

Effects Loop

D.I. Output

Line Out

Designed, Engineered & Quality Controlled by

Mains Input

Marshall Amplification plc, Bletchley, Milton Keynes, England.

Made in China

Output 2x50 Watts RMS into 4

Left / Mono

Footswitch

Return

MODEL: AS100D

280 Watts 120V ~ 60Hz

AS100D Block Diagram

VOL INSTRUMENT

TIP RING

LOW MID FREQ HIGH -1

GAIN VOL AUX MIC LOW HIGH -1 PHASE

SWEEP 1

SWEEP 2 NOTCH
TWEETER D.I. RIGHT P.A. CROSSOVER
CONTOUR PHANTOM 15V LOW HIGH -1 REVERB PROGRAM ADJUST LEVEL FOOTSWITCH EXT. FX VOL PHASE REVERB R TAPE IN L LEFT VOL RIGHT
LINE OUT RIGHT MASTER LIMITER

DRIVER

MIC AUX
LINE OUT LEFT D.I. LEFT P.A.

TWEETER CROSSOVER

DIGITAL REVERB

EXT. FX

DRIVER LEVEL (BACK)

SEND RETURN

L-MONO