Marshall Amplification JCM800 Series - Manual (Page 26)

“Picture this, Me, my guitar, a wall of Marshall
AS100Ds. Oh yeah, and one very angry looking
front of house engineer. Heaven!”
Aziz Ibrahim
Acoustic Amplifiers
AS50D Combo • AS100D Combo
Right:
AS50D Combo
Bottom:
AS100D Combo
Marshall Amplification Product Catalogue 49
“Above all I like the sound, which has never been
so close to the acoustic specs of my guitar. I love
the idea of bringing it to the gig or to a rehearsal
instead of my massive rack.”
Pierre Bensusan
48 Marshall Amplification Product Catalogue
When designing amplifiers for acoustic guitar, while many
of the functions and features may differ from their electric
guitar counterparts, the same appreciation of tone is
essential, as is listening to customer feedback. As a direct
result, innovative features, clear and natural tone plus
stylish looks are what our acoustic combos are all about.
The AS Series acoustic amplifiers allow you to express
your emotions with passion.
AS50D Combo
The AS50D is a 50 Watt combo housing 2x8" custom voiced speakers
and a single high fidelity soft polymer dome tweeter as used on the
AS100D, a combination which allows for clear and detailed sound
reproduction across the entire range. This compact and highly portable
combo features two channels, each of which has its own independent
volume and tone controls. A variety of inputs give the AS50D the ability to
handle all-comers: the high impedance input on Channel 1 is perfect for
piezo or magnetic pickups. Channel 2 boasts RCA phono inputs plus a
balanced phantom powered XLR type input in addition to its jack input,
making it the perfect host for voice, instrument or even backing track.
The AS50D also contains a high quality digital effects section featuring an
adjustable Chorus which is assignable to either or both channels.
The studio quality natural sounding digital Reverb and the parallel Effects
Loop can be balanced between the two channels.
One of the most difficult aspects of amplifying certain acoustic
instruments is feedback. Therefore, anti-feedback controls include a
Phase switch and a frequency controllable Notch Filter. Another useful
AS50D feature is an internal Limiter which allows you to drive the
maximum level from the 50 Watt power stage, yet remain distortion free.
Neat and affordable, flexible and portable, the AS50D is ideal for the
acoustic musician who wants an amp which is perfectly suited to
intimate gigs.
AS100D Combo
For the acoustic player who wants it all, we offer the comprehensively
featured and powerful AS100D – a 50 Watt + 50 Watt, 2x8" combo with
two high fidelity polymer dome tweeters. The AS100D has been
specially created for use with a variety of acoustic instruments and now
boasts new and improved speakers conceived by our design experts
in conjunction with Celestion. 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. For those using two pick-ups via a single stereo jack, the
two main Acoustic Channels (1 and 2) can be linked together via a
‘Link’ switch, affording you independent Volume and EQ controls for
each pick-up.
The other two channels are a dedicated Microphone (Ch.3) and an
Auxiliary (Ch.4), the latter of which has phono (RCA) stereo inputs
specifically for use with external audio equipment. The AS100D also
houses an internal limiter to ensure you can achieve maximum output
while your sound remains distortion free.
Even though the AS100D’s 50 Watt + 50 Watt stereo configuration offers
more than enough power for many typical acoustic music venues, a
stereo pair of balanced XLR DI Outs and Line Outs allow you to connect
directly to an external PA system for larger venues. When playing live,
one of the most difficult aspects of amplifying acoustic instruments is
unwanted feedback. To help eliminate this, the AS100D features several
anti-feedback controls. These include an individual Phase switch on
channels 1, 2 & 3 plus two frequency controllable Notch Filters with
selectable extra depth for channels 1 & 2.
The superb quality of the sixteen built-in, adjustable stereo digital effects
(10 Reverbs, Delay, Chorus and more) adds an entirely new dimension to
the already wide range of sounds this professional combo has to offer.
Additionally, there is also a stereo Parallel Effects Loop, complete with
Level Control, on the rear panel.
Compact and portable, the stylish AS100D offers great flexibility and is
the ideal amplifier for the acoustic player who wants the highest quality
performance with absolutely natural tonal reproduction.
FEATURES AS50D AS100D
Output (RMS) 50 Watt 100 Watt Stereo (50 Watt per side)
Channels 2 4
Volume Control (1 per channel) ✓ ✓
Independent Tone Network per Channel ✓ Ch. 1, 2 & 3
Microphone Input ✓ Ch. 2 & 3
Phase Switch ✓ Ch. 1, 2 & 3
Phantom Power Ch.2 Ch. 2 & 3
Phono Inputs Ch.2 Ch. 4
Anti-Feedback Notch Filter ✓ Ch. 1 & 2
Digital FX ✓ ✓
Master Volume ✓ ✓
Digital Reverb ✓ ✓
FX Loop Mono Stereo
D.I. Outputs Mono Stereo Balanced
Line Out Mono Stereo Unbalanced
Polymer Dome Tweeter 1 2
Speakers 2 x 8” 2 x 8”(Celestion)
Dimensions (mm) 550 x 415 x 255 605 x 530 x 270
Weight (kg) 16 21
AMPLIFIER SPECIFICATION