Documents, presets, manuals Alesis MidiVerb III – Audiofanzine. ALESIS MidiVerb 3 (M3) Service Manual P/N: 4-A ATTENTION! THIS DOCUMENT CONTAINS SENSITIVE PROPRIETARY INFORMATION. Does anybody have a PDF of the instruction manual and effects chart for the MidiVerb III?.

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There are 15 configurations in all, consisting of various effects combinations – though in all cases, the input filter of the EQ section comes first in the chain.

Alesis MidiVerb 3 Manuals

The second parameter, Chorus Speed, gives you control over the modulation rate of the effects – pitch in the case of chorus and time in the case of flanging. The sets up the address the address buss see section 4. If you are not the authorized, intended recipient, you are hereby notified that any review, dissemination, distribution or duplication of this document is strictly prohibited.

Memory mapped input works much the same. Following the emergence of Yamaha’s hugely popular SPX90, a few years ago, it quickly became clear that the way forward was the area of multi-effects, where a single unit was capable of providing reverb, chorus, ADT, flanging and delay in various combinations – and, of course, under the control of MIDI. If this 1C is extremely hot, to the touch, then it is faulty.

Replace only with the same or equivalent type recommended by the manufacturer.

Alesis MidiVerb 3 Manuals

Note that the first units released did not incorporate the full reset circuit described below. When the switch is turned off, the capacitor will hold that level indefinitely [barring internal leakage ].

This time however, instead of strobing a clock line, the output enable of the selected latch is strobed, placing it’s information on the data buss. From there, the inputs are buffered by U1, and passed through the input potentiometers. If you are not authorized, please contact Alesis and destroy all copies of this document. The six parameters available for control are reverb decay time, reverb level, delay time, delay level, delay regeneration feedback and chorus speed – giving a total of 48 routing options together with control of modulation amplitude by either a positive or negative amount.


The summed stereo signal is sent to the anti-aliasing filter consisting of most of U4, and associated resistors and capacitors. AC power supply cords should be placed such that no one is likely to step on the cords and such that nothing will be placed on or against them.

We believe that most, if not all of the original boards that went out have been retrofitted, so their occurance in field should be extremely rare. Control over delay consists of two straightforward parameters for adjusting Delay Time and Regeneration feedback – which, aldsis you think about it, is really all you need.

If the product is not used for any significant period of time, the product’s AC power supply cord should be unplugged from the AC outlet. Although these values can never be abovemidivwrb two byte packed format is retained for consistency. Check reset U32 pin 9both during power up, and down.

Full text of “Alesis: alesis midiverb 3 m3 service manual”

Any comments or suggestions you may have pertaining to the document are welcome and encouraged. Of course, in practice, being restricted to mono delays means little more than not being able to set up those intensely irritating ping-pong’ effects which seem to crop up on most units these days if you think you’ve just unearthed an underlying prejudice of mine, you’d be right.

This reduces any audio pop during the attack portion of the input signal, and allows for a faster response to small signals.

The M3 also utilizes a double buffering system to ensure smooth operation, i. By varying the placement and amplitude of incoming samples, discrete time delays are achieved. Bad power supply rail. A total of 24 algorithms are available, divided equally between chorus and flanging effects. Any messages received via MIDI within 40 milliseconds after a parameter change may be ignored.


All leftover SRAM space is used for the to store variables for it’s own use. Shortly after the release of the product, it was found that this simply wasn’t enough if the unit was turned off, and manjal turned back on rapidly, the unit would occasionally fail to reset. Even with its restricted programming options, the Midiverb soon exhausts the range of conventional characters and starts to rely on cryptic combinations of upper and lower case letters which often defy recognition without the instruction manual in your hand.

The chart on the following page was created in an effort to relieve the beleaguered technician from having to “discover” aleesis of the common faults we have seen. The Midiverb III keeps you on the right side of that line and for that reason alone I’d recommend it wholeheartedly. Danger of explosion if battery is incorrectly replaced.

Each significant binary weight starting with the Most Significant Bit is taken in turn, thus requiring only 16 comparisons to achieve a final value.

MIDI midiverrb is less complicated than it sounds and is simply a means of setting up the unit so that program change numbers sent via MIDI may be directed to any of the Midiverb’s programs. Faulty transistor Q2, Q3. This buss multiplexes between low order addresses 1st 8 bitsand data. When mixed together, and converted back into analog, these delays simulate the reflections associated with natural reverbs, and delays, as well as non natural effects such as reverse reverbs, and gated reverbs.

Incidentally, all mapping functions are global and cannot be stored with individual programs.

But you do need to optimise your signal levels if noise isn’t to become a problem, particularly with flanging. The product should not be used near any water or in moisture.