polynominal logo
Synthesizers Drum machines Samplers Effects 8-16bits+ toys HOME

Alesis D4

 

 

 

alesis d4
audio demo Country: USA
Weight: 2 kg
Dimensions: 43,6 (H) x 483 (W) x 200 (D) mm
audio demo trend price : 70€
manual demo sample video comments

Alesis D4
Drum Module (1991)

 

Digital rackmount module based on PCM samples features 12 analog trigger inputs controlled by DYNAMIC ARTICULATION technology.

D4 display

 DYNAMIC ARTICULATION


info RACKMOUNT
single rack unit.
Main panel features a 16 X 2 lines display, 12 push buttons, a data encoder and a preview trigger (non-dynamic) pad.

Back panel terminals connectors:
- main signal output
- AUX output
- 12 jack triggers inputs
- footswitch input for hit-hat control or assignable to other functions
- headphones (frontal).

acPower supply is external AC-AC type 9V / 830 mA original is P3.






edit TECH main core is a 8-bits 8031 / 80C31 MPU which manages 16 voices polyphony - converter DAC is a Burr-Brown PCM54.

STRUCTURE: the D4 sound generation is based on plain PCM samples on the ROM wavetable - the basic sound architecture is the KIT (a kind of patch) composed by up to 61 PCM samples shots.

 

sample structure

 



edit WAVETABLE
internal mask ROMs contain 541 PCM waveforms at 16 bits resolution - most are mono-sampled but some are stereo natives.
*FREE* Download a full D4 set sampled wav

bassdrum (x99) demo
snare drum (x99) demo
cymbals-hihats (x55) demo
tom (x92) demo
FX (x80) demo
percussion/chromatics (x76) demo

 



samples



edit INTERFACE EDIT
classic nineties programming with submenus.




edit EDIT
basic sound parameters includes panning, pitch tuning and analog out assignment following 4 configurations:
- A: 2 stereo pairs
- B: 1 stereo
- C: 2 mono
- D: 4 mono.


trigger drum input

 

trigger TRIGGERS each sound is assigned to one of 12 trigger inputs based on custom DYNAMIC ARTICULATION system technology, compatible with most trigger systems.

Some dedicated trigger parameters matches the drummer playmode behavior:
- sensibility adjustment
- 8 velocity curves
- decay time
- crosstalks: a threshold gate filters nearby pads vibrations (PIC)


triggers sumup


midi MIDI the drum brain works also with standard Midi system but the implementation is rather poor offering just a few Midi CC# like volume, pitch bending and program change.
Check out full Midi Parameters LIST.


clock midi

 


memroy MEMORY
:
- 21 RAM user kits
Kits and configuration are saved to SRAM memory - data can be backup to Midi exclusives datas.

internal d4
*click for bigger picture* (ABOVE)Battery replacement: 3V BR-2325 lithium battery soldered to mainboard, replacement involves soldering

 


midi
OS lastest version is 1.4 burnt in a single 64 Kb EPROM 8 bits model TMS27C512.

internal d4
- DOWNLOAD LATEST FREE BINARY -




memroy RELATED MODELS:

alesis dm5

DM5 (1996) updated D4 at 18 bits resolution and 500 sounds VIDEO

- DM6
(2009) VIDEO

- DM10 (2012) VIDEO



effet VST PLUGIN / SAMPLED VERSION there is no official D4 VST plugin, however some free samples collections:

  name price
free d4 samples

FREE!


full set sampled

info

free D4 samples
DOWNLOAD

 

 

demoAUDIO DEMO

demo factory demo
demo drum pattern
demo electro drum machine TR-808
demo heavy kit
demo standard kit 1
demo standard kit 2



video VIDEO SELECTION

video1 DIY Electronic Drum Set video2
demo DIY Electronic Drum Set knocking on

 

alesis d4 advert

 

Company: Alesis
Model: D4
Class: Drum Module
Dates: 1991
Price: 70€
Synthesis: PCM rompler
Display: 16 X 2 lines
Polyphony: 16 voices
Resolution: 16 bits
N. waves : 541 PCM
Trigger inputs: 12
Memory: 21 kits
CPU: 8031
DAC: PCM54
Demo: 6

 

alesis d4 reset procedure

D4 Factory Reset procedure

HOLD VOICE AND OUTPUT WHILE POWERING ON

 

 

 

manual
MANUAL


manual
SERVICE MANUAL


manual
-more demo
- more free samples set

 

midi

D4 TEST MODE Power up while holding the "MIDI"+
"DRUMSET" buttons simultaneously.

 

edit

*FREE* Download a full D4 set sampled



original scan
manual original Brochure

 

Alesis D4 for sale

alesis d4 for sale
CHECK OUT EBAY OFFERS

 

banner d4

 

 

CPU INTEL REVISION BOARD CHIP
awardSPECIAL AWARDS:

cheap as hell!
Cheap as hell


comment


REVIEW "good dynamics and clear converters at the time , If you're on budget it's ok"

manual manual
-many sounds - some outdated sounds
-cheap
limited edit

Add a comment / review

 

 

polynominal logo
      For sale Comment Contact
Synthesizers Drum machines Samplers Effects 8-16bits+ toys HOME

alesis d4 2.5 out of 5 based on 62 ratings. price €80