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

Roland TR-909

 

 

 

roland tr909

logo 909

audio demo trend price : 2000-2500€
manual service manual demo video sample comments

Roland TR-909 rhythm composer (1983)

The legendary cult drum machine considered maybe as sought-after as the elder brother TR-808.

This was a commercial failure and Roland retired the machine from the market after a few months.

logo

sequencer

info LAPTOP (weight: 4.5 kg) .
Main panel features a basic segments display , 31 knobs, 23 buttons and 16 pads with no velocity.

Back panel terminal connectors:
- main out
- 10 individual outputs
- Midi interface
- tape interface
- 5-DIN sync input
- a +5V pulse trigger out controlled by rimshot
- pedalswitch input for start/stop
- memory cartridge slot

 

info SOUND based on a CPU NEC UPD7811G manages 10 channles each with individual mix levels.
The sound generation is an hybrid between
- analog
- PCM digital samples


data 909

info ANALOG family is generated like by several mini-synthesizers with individual circuits, onboard VCO oscillators, noise generators, envelope VCA stages and filtered by lowpass filters.
Each percussions have different controls:


side 909

Bass Drum
tune sets the pitch
decay sets the lenght
attack adds a click at the beginning .

Snare Drum
tune sets the pitch
tone emphasizes the VCF filter and the total decay
snappy sets the amount of white noise

Low tom
pitch sets the tuning
decay sets the relative lenght

Mid tom
pitch same as low tom but with different range
decay sets the relative lenght

High tom
pitch same as low tom but with different range
decay sets the relative lenght

Rim Shot
no control

Handclap
no control


info DIGITAL section offers 3 PCM samples coded at 6 bits resolution and 18 kHz frequency, the rest of the audio signal path is pure analog including EG, VCF and VCA.
PCM shots are stored in a 32 Kb ROM HITACHI HN61256P.

side 909


Hi-Hat (open)
decay makes a long open sound
tune sets the pitch

Hi-Hat (close)
channel-shared with opened hihat circuit
they canno be played at same time

Crash
tune sets the pitch of the sample

Ride
tune sets the pitch of the sample

pcm samples



info SEQUENCER
is based on famous 16 step step entries or tapping method.
There are 3 main sequencer functions that enhance the pattern groove:
ACCENT: makes a specific step louder for a single instruments or all
SHUFFLE: swings the beat for a more human rhythms
FLAME: adds a syncope on a step. It does not apply to: rimshot, claps, hihats, crash and ride



info SYNC internal tempo range from 37 to 290 BPM or external clock sync is possible in 3 ways:
- 5 DIN SYNC signal at 24 PPQ
- Midi clock
- tape syncsequencer

info MIDI it is possible to trigger the sound percussions directly by Midi, but implementation is rather basic and offers only ON/OFF messages.



info MEMORY
the internal RAM holds
- 4 songs
- 48 patterns (max 896 measures) i
Patterns and songs are saved if batteries (2X 1.5V) are fitted, then these can be saved to tape dump or in a M-64C RAM cartridge.

 

info REPAIR AND MODDING the tr909 is a pretty reliable machine; the first troubles are usually the pots that scratches or jump values.
There are many custom modding on the machine available on the net. Below a little gallery:

custom tr909 a custom tr909 b custom tr909 3 pic 1 : ebay auction
pic 2: custom synth.co.uk
pic 3:scandinaviaworks.co.uk



info
RELATED FAMILY

tr8 Roland TR-8 - digital tr808 and 909 emulation from 2014.
jomox xbase09 JOMOX Xbase 09 commercial analog-digital clone
novation drum station Novation drumstation rackmount l digital clone from 1996
909 clone

DIY clone project from synthage.com

VIDEO

tr909 clone

DIY clone project website

 

VIDEO



effet
VST PLUGIN & SAMPLED there are some free and commercial samples set, app and VST:

  name price link demo
Waveshapper bedroom producer free
(tape processed)
effet demo2
sampleset 2 simenschi.com free

effet N/A
dr55 free samples d16.pl commercial VST effet demo2
dr55 free samples Thomas Nomaier free VST
effet N/A
boom 808 ios wavealchemy commercial effet N/A



demoAUDIO DEMO

audio demo


Demo5 with
elka synthex
roland Tb303
Simmons SDSV


effet Soundcloud TR-909


demo1 demo2

video VIDEO CLIP SELECTION

Roland TR-909 Drum Machine demo Roland TR-909 & Elektron A TR-909 ROLAND TR-808
Drum Machine demo with Elektron A with ROLAND TR-808

 

roland tr909

 



TR 909 RESET PROCEDURE:

HOLD TRACK #1 AND PATTERN #1 AND POWER ON
.

info


FREE!

service manual
tr909 service manual

 

GOOD LINK

tr909 online
TR909 ONLINE

 

 


FUN

Roland TR-909 Drum Machine demo
THE GIANT TR909

a 2.7 meters tr909 created by audiovisual group RAY.
The machine is a big trigger for a Tr8

 


roalnd tr909 brochure

 

 

roalnd tr 909 flyer

 

 

tr909 specs

 

 

 

shirt from ebay

 

 

mug from ebay

 

 

pillowfun

 

 

wow!

 

 

start stop bassdrum pot alps


manual

- pure history
-
sounds like no one

manual

- expensive
-
overused
-may need technical care

comment



"OK, it is an expensive techno toy and you do not care for this kind of sounds, but You will NOT find any clones, VST, fancy DIY that match a true tr909."



 

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

all snapshots*, sounds, texts copyright Polynominal.com / Eric Pochesci
*gadget merchandising from ebay auctions
* swimsuit by ETSY
* DIY clones property of their respective owners

Roland tr909 5 out of 5 based on 18 ratings. price €2000