Marshall AS50R manual

Marshall AS50R
8.5 · 4
PDF manual
 · 5 pages
English
manualMarshall AS50R
1

From the Chairman

I would like to thank you personally for selecting the AS50R,
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 right back at the birth of Marshall Amplification back
in 1962.
In the case of the Acoustic Soloist, much time and research has
gone into making the sound as natural as possible. As all of my
designers are also guitarists, they fully understand the needs of the
player and bring their expertise to bear on all our products. You can
also rest assured that every Marshall amplifier has been designed
and engineered to the highest possible standards, so as a result will
stand the test of time and constant use.
I strongly suggest that you read this handbook carefully before
using your AS50R and then keep it on hand for future reference.
I am certain that you will get great enjoyment from your Marshall
Acoustic Soloist combo and wish you every success with it.
Yours Sincerely,
English
English

Introduction

The AS50R is a compact and portable 50 Watt combo amplifier specially designed for use with acoustic
instruments. Between its two channels, this combo has the flexibility to handle instruments with transducers, such
as piezo or magnetic pick-ups (channel 1), or microphone for either vocal or instrument reproduction (channel 2).
The built-in Chorus effect is assignable to either or both channels and the Reverb can be controlled and balanced
between the channels to create just the right ambience. If you want to add further effects, then there is an on-board
parallel effects loop which can be balanced between the channels in the same way as the Reverb.
One of the most difficult aspects of amplifying some acoustic instruments is feedback. To help you eliminate this,
the AS50R features several ‘anti-feedback’ controls, including a Phase switch and a frequency controllable Notch
Filter. The combination of these two elements will give you precise control of the frequencies where feedback is
likely to occur and help you to eliminate them.
For clear and detailed performance, the AS50R is loaded with two 8" speakers and a high efficiency piezo tweeter.
There is also an internal limiter which allows you to push the maximum level from the 50 Watt output, whilst
remaining distortion free.
Neat and compact, flexible and portable, the AS50R is the ideal amplifier for the acoustic player who wants a
system as suitable for small gigs as it is at home.

Front Panel Features

Channel 1 - Acoustic Instrument Channel

1. Input Jack

Plug the lead from your guitar in here. The high
impedance of this input will help you to get the
best from the passive or active piezo or magnetic
pick-ups.

2. Volume Control

Controls the volume level of the Acoustic Channel 1.
A good place to start with this control is the half
way, or 12 o’clock position, then adjust according
to the sensitivity of your pick-up.

3. Bass Control

Adjusts the amount of bass, or bottom end of the
instrument’s tone. Care should be taken when
setting this control as adding excessive bass can
cause unnatural howling. Again, the half way
position is the best place to start.

4. Treble Control

Adjusts the treble, or top end of your sound.
Careful adjustment will make your high notes lively
but not too harsh. It is worth noting that set in
higher positions, this control will induce a certain
amount of noise.

Channel 2 - Microphone / Aux Channel

5. Phono Inputs

Inputs to take connection from a tape or CD player.

6. Microphone Input

Balanced XLR type input for connection of a
microphone and suitable for vocal or instrument
applications.

7. Jack Input

Input to take any source, such as a drum machine,
keyboard, etc.

8. Volume Control

Controls the volume level of the Microphone / Aux
Channel 2. A good place to start with this control is
the half way, or 12 o’clock position, then adjust
according to the sensitivity of your pick-up

9. Bass Control

Adjusts the amount of bass, or bottom end of your
sound. Care should be taken when setting this
control as adding excessive bass can cause
unnatural howling. Again, the half way position is
probably the best place to start.
10.

Treble Control

Adjusts the treble, or top end of your sound.
Careful adjustment will make your high notes lively
but not too harsh. It is worth noting that set in
higher positions, this control will induce a certain
amount of noise.

Master Section

11. C

horus Assign Switches

Allows the built in Chorus effect to be selected on
either channel individually, or both channels
together.
12.

Chorus Speed Control

Controls the speed of change of frequency for the
built-in Chorus effect.
13.

Chorus Depth Control

Controls the amount of change of the frequency
shift for the built-in Chorus effect.

Manual

View the manual for the Marshall AS50R here, for free. This manual comes under the category guitar amplifiers and has been rated by 4 people with an average of a 8.5. This manual is available in the following languages: English. Do you have a question about the Marshall AS50R or do you need help? Ask your question here

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Marshall AS50R specifications

Below you will find the product specifications and the manual specifications of the Marshall AS50R.

The Marshall AS50R is a guitar amplifier that is widely regarded for its versatile and reliable performance. It is specifically designed to amplify the sound of electric guitars, delivering a clean and powerful sound that can fill small to medium-sized venues. Featuring a solid construction, the Marshall AS50R ensures durability and longevity. It is equipped with a 50-watt power amplifier, which provides sufficient volume for live performances or studio recording. The amplifier's compact size makes it easy to transport, allowing musicians to take it to different gigs or practice sessions. The AS50R includes a range of controls that allow users to fine-tune their sound. It features independent channels for both the guitar and microphone inputs, granting the flexibility to connect different types of instruments or audio sources. Additionally, the amplifier provides bass, treble, and reverb controls, enabling musicians to shape their desired sound. In terms of connectivity, the AS50R offers various options. It comes with a built-in reverb effect, which adds depth and ambience to the sound. The amplifier also features a balanced XLR line output, allowing for direct connection to a mixing console or audio interface for recording purposes. It even includes an auxiliary input, enabling users to connect external devices, such as a smartphone or MP3 player, to play along with backing tracks. Overall, the Marshall AS50R is a reliable and versatile guitar amplifier that provides musicians with a clean and powerful sound. With its solid construction, range of controls, and various connectivity options, it is a suitable choice for both live performances and studio recording.

General
BrandMarshall
ModelAS50R
Productguitar amplifier
LanguageEnglish
FiletypeUser manual (PDF)

Frequently Asked Questions

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Marshall AS50R below.

How do I connect my acoustic instrument to the Marshall AS50R amplifier?

To connect your acoustic instrument to the Marshall AS50R amplifier, follow these steps: 1. Locate the input jack on the front panel of the amplifier. It is labeled as "Input Jack." 2. Plug the lead from your acoustic instrument into the input jack. The high impedance of this input is designed to optimize the sound quality for passive or active piezo or magnetic pickups. 3. Adjust the volume control for the Acoustic Instrument Channel. Start with the control set at the halfway or 12 o'clock position, and then adjust it according to the sensitivity of your pickup. 4. Use the bass control to adjust the amount of bass or bottom end in your instrument's tone. Be cautious not to add excessive bass, as it can cause unnatural howling. Starting at the halfway position is recommended. 5. Adjust the treble control to fine-tune the top end of your sound. Careful adjustment will make your high notes lively without being too harsh. Note that setting the control to higher positions may introduce some noise. By following these steps, you can successfully connect your acoustic instrument to the Marshall AS50R amplifier and optimize the sound for your performance.

Why is there no sound coming from the acoustic instrument channel of the Marshall AS50R amplifier?

If there is no sound coming from the acoustic instrument channel of the Marshall AS50R amplifier, you can troubleshoot the issue by following these steps: 1. Check the connection: Ensure that the lead from your acoustic instrument is securely plugged into the input jack labeled "Input Jack" on the front panel of the amplifier. 2. Verify the volume control: Adjust the volume control for the Acoustic Instrument Channel. Start with the control set at the halfway or 12 o'clock position, and then gradually increase the volume to check if the sound is audible. 3. Check the bass and treble controls: Make sure that the bass and treble controls are not set to extreme positions. Set them to the halfway position initially and adjust them as needed to achieve the desired tone. 4. Test the instrument: Try connecting a different acoustic instrument to the amplifier to determine if the issue is with the instrument itself. 5. Check for other connections: If you are using any additional effects pedals or devices, ensure that they are properly connected and functioning correctly. By following these troubleshooting steps, you can identify and resolve the issue of no sound coming from the acoustic instrument channel of the Marshall AS50R amplifier.

How do I adjust the volume, bass, and treble on the acoustic instrument channel of the Marshall AS50R amplifier?

To adjust the volume, bass, and treble on the acoustic instrument channel of the Marshall AS50R amplifier, follow these steps: 1. Locate the volume control for the Acoustic Instrument Channel on the front panel of the amplifier. It is labeled as "Volume" and is specific to this channel. 2. Turn the volume control clockwise to increase the volume or counterclockwise to decrease it. Start with the control set at the halfway or 12 o'clock position and adjust it to your desired level. 3. Find the bass control on the front panel. It is labeled as "Bass" and is used to adjust the amount of low-frequency or bottom-end in your instrument's tone. 4. Turn the bass control clockwise to increase the bass or counterclockwise to decrease it. Start with the control set at the halfway position and adjust it to achieve the desired amount of bass in your sound. 5. Locate the treble control on the front panel. It is labeled as "Treble" and is used to adjust the amount of high-frequency or top-end in your instrument's tone. 6. Turn the treble control clockwise to increase the treble or counterclockwise to decrease it. Start with the control set at the halfway position and adjust it to achieve the desired amount of treble in your sound. By following these steps, you can easily adjust the volume, bass, and treble on the acoustic instrument channel of the Marshall AS50R amplifier to customize your sound according to your preferences.

Can I use a microphone with the Marshall AS50R amplifier?

Yes, you can use a microphone with the Marshall AS50R amplifier. Here are the steps to do so: 1. Locate the Microphone Input on the front panel of the amplifier. It is a balanced XLR type input labeled as "Microphone Input." 2. Connect your microphone to the Microphone Input using an XLR cable. Ensure that the cable is securely plugged into both the microphone and the amplifier. 3. Adjust the volume control for the Microphone / Aux Channel. Start with the control set at the halfway or 12 o'clock position, and then adjust it according to the sensitivity of your microphone. 4. Use the bass control to adjust the amount of bass or bottom end in the microphone's sound. Be cautious not to add excessive bass, as it can cause unnatural howling. Starting at the halfway position is recommended. 5. Adjust the treble control to fine-tune the top end of the microphone's sound. Careful adjustment will make the high notes lively without being too harsh. Note that setting the control to higher positions may introduce some noise. By following these steps, you can successfully use a microphone with the Marshall AS50R amplifier and achieve the desired sound for your vocals or instrument applications.

How do I connect a microphone to the microphone/aux channel of the Marshall AS50R amplifier?

To connect a microphone to the microphone/aux channel of the Marshall AS50R amplifier, follow these steps: 1. Locate the microphone input on the front panel of the amplifier. It is labeled as "Microphone Input" and is a balanced XLR type input. 2. Use an XLR cable to connect the microphone to the microphone input. Ensure that the cable is securely plugged into both the microphone and the amplifier. 3. Adjust the volume control for the microphone/aux channel. This control is labeled as "Volume" and is specific to this channel. Start with the control set at the halfway or 12 o'clock position, and then adjust it according to the sensitivity of your microphone. 4. If needed, adjust the bass and treble controls to fine-tune the sound of the microphone. The bass control adjusts the amount of low-frequency or bottom-end, while the treble control adjusts the amount of high-frequency or top-end in the microphone's sound. By following these steps, you can successfully connect a microphone to the microphone/aux channel of the Marshall AS50R amplifier and adjust the volume and tone to suit your needs for vocal or instrument applications.

Why is there feedback when using a microphone with the Marshall AS50R amplifier?

When using a microphone with the Marshall AS50R amplifier, feedback can occur due to various reasons. Here are some possible causes and solutions to address the feedback issue: 1. Positioning: Ensure that the microphone is positioned correctly. Avoid placing it too close to the speakers or in a position where it picks up sound from the amplifier. Adjust the microphone's position to minimize the chances of feedback. 2. Volume levels: Check the volume levels of the microphone and the amplifier. If the microphone volume is set too high, it can cause feedback. Reduce the microphone volume and adjust the amplifier's volume accordingly to find the optimal balance. 3. Notch Filter: The AS50R amplifier features a frequency controllable Notch Filter. Use this control to identify and reduce frequencies that are causing feedback. Adjust the Notch Filter to target the specific frequencies where feedback occurs. 4. Phase Switch: The AS50R amplifier also includes a Phase switch. Experiment with different positions of the Phase switch to find the setting that minimizes feedback. By following these steps, you can troubleshoot and address the feedback issue when using a microphone with the Marshall AS50R amplifier, ensuring a clear and uninterrupted sound experience.

What is the purpose of the phase switch on the Marshall AS50R amplifier?

The purpose of the phase switch on the Marshall AS50R amplifier is to help control and eliminate feedback. Here's a concise explanation of its function: 1. Feedback: Feedback occurs when sound from the amplifier is picked up by the microphone and re-amplified, creating a loop that results in a high-pitched squeal or howling sound. 2. Phase Switch: The phase switch on the AS50R amplifier allows you to change the phase relationship between the amplifier's output and the microphone's input. 3. Feedback Control: By experimenting with the phase switch, you can find the setting that minimizes or eliminates feedback. In some cases, flipping the phase switch can help cancel out certain frequencies that are prone to feedback. 4. Adjusting the Switch: Try different positions of the phase switch while monitoring the sound. Find the setting that provides the clearest and most feedback-free sound. By using the phase switch on the Marshall AS50R amplifier, you can effectively control and reduce feedback, ensuring a clean and enjoyable sound experience.

How do I use the frequency controllable notch filter on the Marshall AS50R amplifier to eliminate feedback?

The purpose of the frequency controllable notch filter on the Marshall AS50R amplifier is to help eliminate unwanted feedback and resonant frequencies. Here's a concise explanation of how to use it: 1. Locate the notch filter control on the front panel of the amplifier. It is labeled as "Notch" and is specific to each channel. 2. Turn the notch filter control to adjust the frequency at which the filter operates. This allows you to target specific frequencies that are causing feedback or unwanted resonances. 3. Start by setting the notch filter control to the halfway or 12 o'clock position. This is a good starting point to identify the problematic frequencies. 4. Gradually turn the notch filter control clockwise or counterclockwise to find the frequency that minimizes or eliminates the feedback. Listen for changes in the sound and adjust accordingly. 5. Fine-tune the notch filter by making small adjustments to the control until you achieve the desired result. Be mindful not to overcompensate and remove frequencies that are essential to your sound. By using the frequency controllable notch filter on the Marshall AS50R amplifier, you can effectively reduce feedback and improve the overall sound quality of your performance.

Is the manual of the Marshall AS50R available in English?

Yes, the manual of the Marshall AS50R is available in English .

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