User manual MARSHALL AMPLIFIER ACOUSTIC AS50D SOLOIST

[. . . ] 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. English One of the most difficult aspects of amplifying some acoustic instruments is feedback. To help you eliminate this, the AS50D 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 AS50D is loaded with two 8" speakers and a high fidelity polymer dome tweeter. [. . . ] I am certain that you will get great enjoyment from your Marshall Acoustic Soloist combo and wish you every success with it. 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. 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. 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. 4. 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. Chorus Assign Switches Allows the built in Chorus effect to be selected on either channel individually, or both channels together. Channel 2 - Microphone / Aux Channel 5. Phono Inputs Inputs to take connection from a tape or CD player. 12. Chorus Speed Control Controls the speed of change of frequency for the built-in Chorus effect. 6. Microphone Input Balanced XLR type input for connection of a microphone and suitable for vocal or instrument applications. This input supplies phantom power. Dr Jim Marshall OBE and daughter Victoria (Managing Director) 13. Chorus Depth Control Controls the amount of change of the frequency shift for the built-in Chorus effect. 1 Note: When using the Chorus, higher speed settings usually sound better with lower depth settings and vice versa. Frequency Control If feedback occurs when the Master Volume is set to the desired performance level, select the switch (item 17) and rotate this control until the offending frequency is eliminated. 14. [. . . ] DI Out XLR type output for connection to PA or similar external equipment. Note: Both the Line Out and DI out carry exactly the same signal at different levels and both are placed before the Master Volume so changing the overall level of the amplifier will not affect the signal from the DI or Line Output. 5. Effects Send Jack Jack socket to connect to the input of an external effects processor. 2. Footswitch Jack Jack socket for connection of the optional footswitch (model PEDL-10029) for switching the Reverb and Chorus functions on and off. 6. [. . . ]