Acid 303-Style Bass

Sounds like: Squelchy, snarling bassline where the filter chirps open on every accented note.

Sound type: bass · Genre: Acid House, Techno · Style: TB-303 acid bass sequences

A squelchy, resonant filter-sweep bass built for long sequenced runs — the character comes from a fast filter envelope chasing high resonance, distorting as it opens on accented steps.

Open this patch in the interactive Patchpad

Digitone II

Exact match: WAVETONE Saw wave

SYN page 1 · WAVETONE

• TUN1: 0
• WAV1: Saw (PRIM table)
• PD1: 0
• LEV1: 100
• TUN2: 0
• WAV2: Saw (PRIM table)
• PD2: 0
• LEV2: 0

SYN page 2 · WAVETONE

• OFS1: 0
• TBL1: PRIM
• MOD: OFF
• RSET: ON
• OFS2: 0
• TBL2: PRIM
• DRIF: 0

FLTR page 1 · Multi-mode

• FREQ: 40
• RESO: 95
• TYPE: 0 (LP)
• ENV: 89
• ATK: 0
• DEC: 20
• SUS: 13

AMP page

• ATK: 0
• DEC: 20
• SUS: 102
• REL: 38
• MODE: ADSR

FX page

• OVER: 25

Digitone II's WAVETONE machine (select with FUNC+SYN). WAV1 is a real saw from the PRIM table with LEV2 at 0 and MOD OFF, so this is a real oscillator wave, not an FM stand-in. P-lock FLTR page's FREQ and RESO per step (TRIG-hold + the encoders in Grid Recording) for the classic acid movement — a static setting undersells this patch.

Syntakt

Exact match: Saw into a resonant, fast-enveloped filter

SYN — SY RAW

• WAV1: Saw
• TUNE: 64
• NLEV: 0
• OVER: 20

FLTR PAGE 1

• FREQ: 40
• RESO: 95
• TYPE: Lowpass
• ENV: 89

AMP PAGE 1

• ATK: 0
• DEC: 20
• SUS: 102
• REL: 38

AMP PAGE 2

• MODE: ADSR

SY RAW's plain saw plus FLTR PAGE 1's fast Decay and high Resonance gives the same squelchy movement — Syntakt's analog-style filter overdrives naturally at this Resonance, standing in for a dedicated drive. AMP PAGE 2's MODE must be set to ADSR (the default for SY machines, but drum machines default to AHD), or SUS/REL on AMP PAGE 1 are ignored. P-lock FREQ per step for the acid runs since melodic Syntakt tracks have no true mod matrix either.

Novation Summit

Exact match: Saw into a resonant, fast-enveloped filter

OSCILLATOR 1

• WAVE: Sawtooth
• RANGE: 8'

FILTER

• SHAPE: LP
• SLOPE: 24dB
• FREQUENCY: 40
• RESONANCE: 95
• SOURCE: Mod Env 1
• ENV DEPTH: 45

MOD ENVELOPE 1

• ATTACK: 0
• DECAY: 30
• SUSTAIN: 13
• RELEASE: 20

AMP ENVELOPE

• ATTACK: 0
• DECAY: 20
• SUSTAIN: 102
• RELEASE: 38

MODULATION MATRIX

• Slot 1 sA: ModWheel
• Slot 1 Destin: Filt Res
• Slot 1 Depth: +30

EFFECTS

• DISTORTION LEVEL: 25

Summit's filter can self-oscillate near max Resonance for an even more aggressive acid tone. FILTER's SOURCE is routed to Mod Envelope 1 (not the Amp Envelope) to keep the fast, note-independent squelch separate from the Amp Envelope's own shape. Live control: the Mod Wheel opens resonance through Mod Matrix slot 1; ride the panel Env Depth knob by hand for the sweep amount.

Arturia MiniFreak

Exact match: VAnalog saw; single envelope drives the filter

OSCILLATOR

• TYPE: BasicWaves
• WAVE (Morph): 50 (pure sawtooth)
• TIMBRE (Sym): 0
• SHAPE (Sub): 0
• VOLUME: 100

ANALOG FILTER

• TYPE: Low Pass
• CUTOFF: 32
• RESONANCE: 75
• ENV/VELO: 70

ENVELOPE

• ATTACK: 0
• DECAY: 20
• SUSTAIN: 80
• RELEASE: 20

DIGITAL EFFECTS · FX1

• TYPE: Distortion
• INTENSITY: 30
• AMOUNT: 40

MODULATION MATRIX

• Source (row): Velo/AT
• Destination (column): Cutoff
• Amount: +30

Macros

• M1: Resonance
• M2: Filter ENV/VELO

Osc 1 is BasicWaves with Morph at 50 (pure sawtooth): the Morph knob runs from a square (0) through a sawtooth (50) to a double sawtooth an octave up (100), Sym only changes the pulse width below 50, and Sub adds a sine an octave down (0 here). Mod Matrix: the Velo/AT row to the Cutoff column at +30. Macros: M1: Resonance; M2: Filter ENV/VELO. Values are on MiniFreak's native 0-100 scale.

Dreadbox Typhon

Exact match: Saw into a resonant, fast-enveloped filter

FRONT PANEL

• WAVE: ~1-2 o'clock (VCO1 square blended toward VCO2 saw, for buzzy content)
• CUTOFF: ~3 o'clock (moderately closed)
• RESON: ~4-5 o'clock (high, near self-oscillation)
• EG LEVEL: ~3-4 o'clock (strong filter envelope amount)
• FILTER TIME: ~2 o'clock (toward the fast end)
• AMP TIME: ~12 o'clock (medium)
• VOLUME: ~12 o'clock (global, not stored in the preset)

FILTER ADSR

• ATTACK: 0
• DECAY: 20
• SUSTAIN: 10
• RELEASE: 30

AMP ADSR

• ATTACK: 0
• DECAY: 15
• SUSTAIN: 80
• RELEASE: 25

FX1

• TYPE: Hard Clipping
• GAIN: 30
• LVL: 20
• MIX: 40

SET

• VCO GLIDE: 0
• VCO LVL: 100
• VCF TRACK: 0
• VCF FFM: 0
• VCA LVL: 100

The 8 FRONT PANEL knobs are physically unmarked, so RESON/CUTOFF/EG LEVEL above are clock positions, not percentages — push RESON further clockwise for genuine self-oscillation. M1/M2/M3 are left unused; ride CUTOFF live for accents beyond what the Filter ADSR provides.

Compared with other synths: FX1's built-in Hard Clipping stands in for the overdrive used on the other synths.

ASM Hydrasynth Desktop

Exact match: Saw into a resonant, fast-enveloped filter

OSCILLATOR 1

• MODE: Single
• WAVE: Saw
• SEMI: 0
• CENTS: 0
• KEYTRACK: 100%

FILTER 1

• TYPE: LP Ldr24
• CUTOFF: 40.0
• RESONANCE: 95.0
• ENV 1 AMOUNT: 63
• KEYTRACK: 0%

AMP

• AMP LEVEL: 110.0

ENVELOPE 1

• ATTACK: 0 ms
• DECAY: 220 ms
• SUSTAIN: 16.0
• RELEASE: 300 ms

ENVELOPE 2

• ATTACK: 0 ms
• DECAY: 90 ms
• SUSTAIN: 102.0
• RELEASE: 150 ms

Macros

• Macro 1: Filter 1 Resonance
• Macro 2: Filter 1 Env 1 Amount

Envelope 1 is pre-wired to Filter 1 (its ENV 1 AMOUNT knob decides how much reaches Cutoff) and Envelope 2 is pre-wired to Amp, so no Mod Matrix routing is needed for either. Macros 1-2 here are real performance Macros, not the Mutator oscillator-shaping modules — those are a separate part of the synth and aren't used by this patch.

How the synths compare

Resonance and filter-envelope amount are pushed unusually high on purpose — that's the entire acid character. Back them off for a tamer, more conventional filtered bass. Digitone II uses WAVETONE's real saw.

Patchpad is a free reference of drum patterns and synth patches written for real hardware: Digitakt II, Digitone II, Syntakt, Novation Summit, Arturia MiniFreak, Dreadbox Typhon and ASM Hydrasynth Desktop.