ADVANCED MEMORYMOOG MODIFICATION (LAMM)
more than twenty years ago and built by Moog Music before 1984, the
Memorymoog has earned a reputation for the highest quality analog
sound of any polyphonic synthesizer. However, the Memorymoog has
been plagued with hardware instabilities and operating system
shortcomings that have compromised its reliability and frustrated
the players who have used it. Furthermore, current standards of
operating system flexibility include a level of MIDI implementation
that goes far beyond the feature set that has heretofore been
available on the Memorymoog.
The Lintronics Advanced Memorymoog (LAMM) retains the high
quality sound and synthesis capabilities of the original
Memorymoog, but raises the reliability of its hardware and the
functionality of its operating system to 1997 standards. In
particular, the entire operating system has been redesigned to
implement a wide range of MIDI functions, and to give a more
clearly-arranged and accessible user interface for the Memorymoog.
Not only does the Advanced Memorymoog possess many features
not found in any other synthesizer, but it has a user interface
that is so clear and intuitive that many players find that they
seldom have to refer to the user's manual.
The LAMM has been developed over the past six years by a
design team headed by Rudi Linhard. Rudi is the
driving force behind Lintronics, a German firm, that
specializes in synthesizer design and modification.
At the present time, some eight dozen Advanced Memorymoogs
are in the field (mostly in Europe), and the user response has been
overwhelmingly positive. Many of these users have been using the
Memorymoog in live performance situations, which was previously
Writing for the German Keyboards Magazine, Matthias Becker says
"Working with Advanced Memorymoog proves to be much
easier than with a stock Memorymoog. Operation is simpler and
faster because of the greater amount of information presented in
the display, and sound management becomes child's play with the
Bankloader/Manager software and MIDI. These things aside, the
stability of the oscillators is what will likely impress Memorymoog
connoisseurs the most. In the two months that I worked with the
Advanced Memorymoog, I had, believe it or not, absolutely no
Installation of LAMM in standard Memorymoogs and Memorymoog
Plus's is performed in 91452 Wilhermsdorf, Germany by
Lintronics, Inc.. The installation, including exhaustive
burn-in and testing, normally takes about two weeks.
ADVANCED MEMORYMOOG MIDI IMPLEMENTATION
Advanced Memorymoog has a rich MIDI implementation that goes
far beyond the capabilities of most other synthesizers. Virtually
all front panel controls and switches transmit MIDI control change
messages in real time. Similarly, sound parameters represented by
front panel controls and switches may all be addressed by incoming
MIDI control change messages. Thus for instance, all sound changes
that the player produces by manipulating front panel controls and
switches may be stored, edited, and played back with a MIDI
In addition, the Advanced Memorymoog receives the following
MIDI messages: Program Change, Note-on velocity, Channel Pressure,
Pitch Bend, Modulation Wheel, Breath Controller, Foot Pedal,
Portamento Amount, and Master Volume.
Six data filters are provided: Wheels on/off, Potentiometers
on/off, Program Change on/off, System Exclusive on/off, Switches
on/off, and remaining Controllers on/off. The Wheels filter
operates on incoming data streams, while all other filters operate
on both incoming and outgoing data streams.
Other MIDI features include availability of both POLY and OMNI
mode, support of Local On/Off messages, and selectable send and
The Memorymoog's arpeggiator or LFO may be synchronized by the
system's MIDI clock, while the instrument's Autotune feature may be
activated by a MIDI Tune Request message. And finally, individual
sounds or complete banks of 100 sounds may be dumped or loaded via
All of the
Advanced Memorymoog's functions, including its potent MIDI
implementation, are managed by a smoothly-working, easy-to-use
operating system. The instrument's programming functions and
servicing routines are accessed through seven Menus of no more than
ten items each. These menus are:
MODE: Offers choices for how the keyboard and panel controls
will respond when used in the polyphonic mode.
MODE: Selects number of currently active voices and note
priority when used in the monophonic mode.
ARPEGGIATOR: Specifies arpeggio-related
CONTROLLER: Manages the MIDI and cassette data
transfers. MIDI: Selects MIDI filter functions and specific MIDI
SPECIALS: Assigns MIDI Mod, Velocity, and Pressure to
specific synthesis parameters; selects arpeggio clock; selects
velocity processing mode; assigns function to footswitch
SERVICE: Offers a selection of routines for use by
service technicians. Those who are familiar with the original
Memorymoog operating system will appreciate the Advanced
Memorymoog's greatly-improved operation. Among the major
switch setting can now be stored on a per-sound basis.
in the keyboard mode causes the display to show the current mode
instead of just the word EDIT. In addition, the selection of the
operating mode and number of voices has been simplified by the
omission of the need to hit the ENTER key for these
Lock function is new, and allows the user to prevent the front
panel controls from being continuously scanned. This prevents the
accidental changing of sounds (e.g. during a live gig), and enables
faster arpeggiation and MIDI processing.
function has been added to the arpeggiation section, which allows
the lower two octaves of the keyboard to be played normally, while
the upper three octaves are used for arpeggiation. All arpeggiation
modes can now be locked with the Key Hold function.
original Memorymoog's operating system would crash when the program
sequencer was called up with an empty sequence. The Advanced
Memorymoog now simply displays CLEARED in this
following circuit improvements and additions are made to every
jacks are installed on the rear expansion slot's cover plate: MIDI
IN and MIDI OUT ports, a 1/4" stereo output jack, a 1/4" mono
output jack and a FILTER input jack. Stereo output circuitry is
added. If the mono output jack is used simultaneously with the
stereo output jack, then the Memorymoog's six voices are spread
across the stereo field (the placement of the individual voices is
fixed internally). The volume of the stereo output can be adjusted
only with the programmable volume pot, and the value can be stored
with each individual sound.
A new digital noise circuit below the stereo output
board eliminates the digital loop effect of the original noise
- The power
supply is checked for cold solder points and defective
voice cards are removed, checked, repaired if necessary, and
modified for the Lintronics Autotune algorithm. Forty-six
oscillator adjustments are replaced with high-stability precision
multi-turn potentiometers. Oscillator capacitors and resistors are
replaced with high stability parts.These modifications ensure the
long-term stability of the oscillators.
boards are removed, checked for cold solder joints, tested, and
repaired if necessary. Modifications for pitch bending, modulation
wheel, foot pedal, and octave signals are made. After these
modifications, the cutoff frequency in Keyboard Tracking mode is
not only controllable by the keyboard, but also by the transpose
switch, tune control, and pitch wheel.
- The Octave
Board is modified so that the setting of the octave switch can be
stored on a per-sound basis.
Digital Board is rebuilt so that the reset switch functions
reliably. Microprocessor and program ROMs are replaced with
upgraded components. MIDI interface circuitry is
panel components are removed, checked, and replaced if necessary.
The front panel is cleaned, and missing or damaged knobs are
replaced with original Moog parts as availability
upgraded circuit boards are reinstalled, the instrument is 100%
tested, then allowed to burn in for 7 days, then tested
INPUT: External audio signals can be fed through the
Memorymoog's VCF and VCA circuitry (including envelopes and LFO)
with the FILTER Input board, the input jack for which is located on
the Memorymoog's expansion slot next to the stereo output
JACK MODIFICATION: The normal Memorymoog transmits only
Keyboard and Glide voltages through the CV-OUT jack. With the
CV-OUT modification, the Advanced Memorymoog adds
Pitch-Bend, Octave, Tune, and Modulation voltages. This is
particularly useful when driving a Minimoog from the CV-OUT. The
Minimoog's third oscillator must no longer be reserved for
modulation and can be used as a sound source.
PRODUCTS AND SERVICES
Advanced Memorymoog operating system is documented with a
complete, carefully-prepared user's manual. The manual includes
full MIDI implementation and system exclusive information. A copy
of the user's manual accompanies each LAMM installation.
Atari ST (called L.A.M.B.), WIN95 and MAC
Bankloader/Manager programs are included with each LAMM
installation. It supports the uploading, downloading, and
management of the Memorymoog's sounds, as well as wave sequencing,
experiments, etc. User support is available by FAX, mail, E-mail
(prefer- red) or by phone.
INSTALLATION IN A MEMORYMOOG PLUS
LAMM upgrade is designed for installation in a stock
Memorymoog. It may also be installed in a Memorymoog Plus. However,
LAMM installation in a Memorymoog Plus entails first
removing the sequencer and MIDI circuitry and restoring the
instrument to standard Memorymoog configuration.
associated with installing the LAMM in an unmodified
Memorymoog, and completing related upgrade work, is performed at
the Wilhermsdorf, Germany office of Lintronics,
wish to send in your Memorymoog for a LAMM installation,
contact Lintronics by mail, phone, FAX or E-mail and ask for
the actual waiting time for the upgrade. If your instrument arrives
in non-operating condition, or requires the replacement of major
components, the LAMM installation may take more time or cost
more than our standard price. We are happy to discuss this
contingency with you, either before you ship your instrument to us,
or after it has arrived at Lintronics.
1984 by Rudi Linhard, Lintronics, Inc.
currently specializes in building innovative electronic musical
interfaces, and in restoring and rebuilding instruments made by
other companies (e.g. Moog). Besides performing LAMM
installations, Lintronics currently offers a line of MIDI-
Interfaces), and is repairing synthesizers.
TERMS OF SALE
Upgrade for a stock Memorymoog in good working order
Upgrade for a stock Memorymoog Plus in good working
Alphanumeric Display with Dot-Matrix
For shipping we recommend: DSV
LINTRONICS, Franziska-Barbara-Str. 10