Marshall Amplification JCM800 Series Acoustic Amplifiers, Pierre Bensusan, Aziz Ibrahim

Acoustic Amplifiers

AS50D Combo • AS100D Combo

Pierre Bensusan

“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.”

Aziz Ibrahim

“Picture this, Me,my guitar,a wall of Marshall AS100Ds. Oh yeah,and one very angry looking front of house engineer. Heaven!”

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.

Right:

AS50D Combo

Bottom:

AS100D Combo

AMPLIFIER SPECIFICATION

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

48 Marshall Amplification Product Catalogue

Marshall Amplification Product Catalogue 49