Marshall Amplification Acoustic Soloist AS80R Bedienungsanleitung

Acoustic

Soloist

AS80R

Combo

Handbook

Marshall Amplification plc

Denbigh Road, Bletchley, Milton Keynes, MK1 1DQ, England

Tel: (01908) 375411

Fax: (01908) 376118

Web Site - http://www.marshallamps.com

Whilst the information contained herein is correct at the time of publication,

due to our policy of constant improvement and development, Marshall

Amplification plc reserve the right to alter specifications without prior notice.

Nov ‘98

Acoustic Soloist -AS80R.

Due to the increased popularity of acoustic

and electro/ acoustic instruments, a dedicated

amplification system that can accurately

reproduce the pureness of an acoustic’s unplugged

sound is a must for many performers.

To amplify the subtle nuances and natural

characteristics of acoustic instruments requires an

amplifier of great flexibility and superb overall

tone.

The unique design and high versatility of the

Acoustic Soloist offers all this within its three

independent channels, each designed for a specific

purpose but with the flexibility to provide much

more -plus the ability for each channel to be used

simultaneously.

Channel 1 -Microphone.

Featuring a balanced XLR connector into a

studio grade pre-amplifier with active volume and

EQ controls.

A phase switch is provided to prevent

problems when linking an instrument in

conjunction with a pick-up device through another

channel.

The flexibility of this channel enables the use

of a microphone for either instrument or vocal

reproduction, making the Acoustic Soloist ideal

for the ‘solo’ performer playing small gigs, where

space is at a premium.

Channel 2 -Magnetic Auxiliary.

As well as being perfect for magnetic or piezo

type acoustic pick-ups, this multi purpose channel

is also ideal for inputing a backing tape or drum

machine.

A shift switch re-voices the channel to suit

clean, electric guitar and is excellent for jazz or

country style playing. This makes the Acoustic

Soloist the ideal amp for singers who also need to

play acoustic and electric rhythm guitar for their

backing.

Channel 3 -Transducer.

The main Transducer channel is intended for

piezo type acoustic transducers either direct from

the instrument or from pre-amped devices.

It's highly flexible features include active

volume and EQ, two specially designed anti-

feedback filters and a unique ‘pick attack’ control

which accentuates the contrast between plectrum

and finger picking styles.

It also has a ‘pedal level’ effects loop suitable

for connecting floor pedals such as delays,

compressors, swell pedals etc, exclusively through

this channel.

The Master Section.

The Acoustic Soloist boasts an 80 watt stereo

(40 watts per side) power amplifier specifically

designed for wide frequency response and low

distortion. Semi ‘soft knee’ limiting is included so

maximum headroom can be achieved cleanly

without any undue harshness.

The built in stereo reverb creates warm,

natural depth while Marshall’s renowned

analogue chorus provides a stereo spread that adds

incredible width to the sound.

The Rear Panel.

The Acoustic Soloist features a ‘Phase

Reversal’ switch on the rear panel that will help to

eliminate one of the most common problems

associated with amplified acoustic instruments -

unwanted feedback and overtones. Furthermore, it

does so without compromising the tone in the

slightest.

WARNING!

PLEASE READ THE FOLLOWING LIST CAREFULLY.

A. The Plug attatched to the mains lead provided is wired in accordance with the

following colour code. Blue -neutral. Green/Yellow -Earth. Brown -Live (UK only).

B. Always ensure that the value of the fuse corresponds to the rating marked on the plug.

C. Never under any circumstances, operate the amplifier without an earth.

D. Always have this equipment serviced or repaired by competent, qualified personnel.

E. Do not attempt to remove the amplifier chassis, there are no user serviceable parts

inside.

G. Never use any amplifier in damp or wet conditions.

H. Please read this instruction manual carefully before switching on.

Also included are stereo line-outs, for direct

linking to larger sound re-inforcement systems,

an effects loop with mono send and stereo return

jacks and Reverb/ Chorus footswitch jack.

Speaker complement.

To help ensure that the Acoustic Soloist’s

sound remains warm and natural, we’ve used two

specially voiced Celestion 10" speakers that have

extended low and high frequency response with a

flat mid-range. This means that the sound always

has superb clarity and dynamic response even at

high volume levels. Also a piezo type dome

tweeter provides all the high-end crispness you

could ever need.

Front Panel

Channel 1 -Microphone.

1. XLR -Balanced input.

Input to mic, pre-amplifier.

2. Phase switch.

Reverses the phase of channel 1 only -to

prevent frequency cancellation problems when

mic’ing an instrument in conjunction with a pick-

up device through another channel.

3. Active Volume/ gain control.

For optimum headroom/ noise performance

controls the channel gain level.

4. 3 Band active EQ.

Provides cut and boost of + or -12 dB at

80 Hz (lo), 600 Hz (mid) and 8 KHz (hi).

5. Chorus in/ out push switch.

Selects the chorus in or out of this channel.

Channel 2 -Magnetic Auxiliary.

6. Jack input.

Jack input of approximately 10 Meg input Z.

7. Shift push switch.

Selects flat response for acoustic and tailored

response for electric guitar.

8. Active Volume/ Gain control.

Controls the channel gain level.

9. 3 Band Active EQ.

Provides cut and boost of + or - 12 dB at

80 Hz (lo), 600 Hz (mid) and 8KHz (hi).

10. Chorus in/ out push switch.

Selects the chorus in or out of this channel.

Channel 3 -Transducer.

11. Jack input.

With source select pushswitch for piezo or

pre-amped input. Piezo -10 meg input. Pre-amp -

100K input.

12. Active Volume/ Gain control.

Controls the channel gain level.

13. FB1 & FB2 Anti-Feedback filters.

Very narrow notch filters centered on the two

frequency bands normally problematic with

acoustic guitars.

14. Pick Attack control.

Centre off control to add or subtract the

higher harmonics of the signal to either remove

pick noise or accentuate these frequencies when

utililising finger style playing.

15. Pedal Level Effects Loop.

(Pre gain and EQ) Effects loop to match

floor pedals. 1 meg Ohm return impedance to

prevent interaction with swell pedals.

16. Fixed EQ.

Sweepable mid range circuit + or -12dB,

250Hz to 2K5Hz.

17. Low and high active E.Q.

Provides cut and boost of + or -12 dB at

80 Hz (lo) and 8 KHz (hi).

Master Section.

18. Mix control.

Controls the level of effects/ dry signal when

using external effects processors through the

effects loop.

19. Stereo Reverb.

With depth control, footswitchable with LED

status indicator.

20. Output volume.

Controls the overall output volume level.

21. Stereo Chorus.

Front panel on/ off switch for Stereo Chorus

with LED indication. Note:( this item is also

footswitchable (see item 23).

For the footswitch to function the panel

switch should be pushed to the‘in’position.

22. Stereo Chorus.

Dual voice LFO’s with resonance, intensity

and rate controls.

Rear Panel

23. Footswitch jack.

Twin footswitch for chorus and reverb

switching functions.

24. Effects Send jack.

Jack socket to feed the input of an external

effects processor.

25. Effects Return jacks.

Sockets to accept the left and right outputs

from an external effects processor.

26. Phase Reversal switch.

Reverses the system phase to enhance

acoustic control (feedback and overtone

elimination) when using the amplifier in a

confined space with the guitar.

27. Line Out jacks.

Left and right line out jacks suitable for

direct connection to PA or recording mixers.

7 86

4 5 12 14 20191813

9 10 15

17 22

Volume

Microphone

-12

010 -12 -12

Chorus

-120 10 -12 -12

Mid Hi Volume

Transducer

Input

Send Return

FBF1

010010 010- + 010010 010

Reverb

On Chorus

FBF2 Attack FX Return Reverb Output

Volume

Mid Hi -12-12 250 -12

Mid

E.Q.

Frequency HiLoPedal Loop

Shift

Phase Input source

Flat

Elec.Guitar Positive

Negative

Piezo

Preamp

Acoustic Control

+12 2k5 +12

min

010

Intensity

Chorus

Rate Modulation

Power

Resonance

Model A1080

+12 +12 +12

max Fast

AACC

CCOO

OOUU

UUSS

SSTT

TTII

IICC

SSOO

OOLL

LLOO

OOII

IISS

SSTT

Volume Lo

Magnetic/Auxillary

+12

LFO1 LFO2

Slow

AS80R Front Panel

Left Right Rev/Chorus

Footswitch

Line Out Effects Return

Right

+ –

Output

Phase

Left Effects send

MAINS INPUT

230V ~ 50 Hz

350 Watts

Where applicable, This Apparatus Must Be Earthed

WARNING! No user serviceable parts inside; refer servicing to qualified

personnel only.

WARNING! Risk of shock. Do not open

AVIS! Risque de choc. Ne pas ouvrir.

Fire & Shock Hazard: Do not expose this unit to rain or moisture.

Manufactured in Great Britain by: Marshall Amplification plc, Bletchley,

Milton Keynes.

27 26 25 24 23

AS80R Rear Panel

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