# Reverb Effects — Parameter Guide > Source: DeepMind 12 Owner's Manual, pp. 95–106 (§9.2–9.3) > Parent: [effects.md](../effects.md) ## Overview The DeepMind 12 offers 13 reverb effects: 10 pure reverbs and 3 reverb-combo effects (chorus+reverb, delay+reverb, flange+reverb) that pack two effects into one FX slot. Most reverbs share a common parameter set (PreDelay, Decay, Size, Damping, Diffusion, Mix, LoCut, HiCut) with variant parameters for each type's character. Parameters marked `*` are available as mod matrix destinations. --- ## TC-DeepVRB (TC Deep Reverb) — type 22 Nine iconic reverb modes from TC Electronic. Only 5 parameters but covers a wide range of tones. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|-----|-----|:----:|-------------| | 1 | PST | Preset | — | — | — | | Ambience, Church, Gate, Hall, Lo Fi, Modulated, Plate, Room, Spring, Tile, Default | | 2 | DCY | Decay | s | 0.1 | 6.0 | * | Time for reverb to dissipate (range is preset-dependent) | | 3 | TON | Tone | % | -50 | 50 | * | Positive = brighter; negative = darker | | 4 | PDY | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source signal | | 5 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | --- ## AmbVerb (Ambient Reverb) — type 4 Lexicon 480L-inspired. Creates a virtual acoustic space that adds warmth without coloring the direct sound. 10 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|-------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.2 | 7.3 | * | Reverb dissipation time | | 3 | SIZ | Size | — | 2.0 | 100 | | Perceived space size | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay within reverb tail | | 5 | DIF | Diffusion | — | 1.0 | 30 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low frequencies below value are excluded | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High frequencies above value are excluded | | 9 | MOD | Mod | % | 0 | 100 | | Reverb tail modulation depth | | 10| TGN | TailGain | % | 0 | 100 | * | Volume of reverb tail | --- ## RoomRev (Room Reverb) — type 27 Lexicon 480L-inspired room simulation. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PRE | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.3 | 28.9 | * | Reverb dissipation time | | 3 | SIZ | Size | m | 4.0 | 76 | | Perceived room size in meters | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay in tail | | 5 | DIF | Diffusion | % | 0 | 100 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | LFX | BassMult | — | 0.2 | 4.0 | * | Low-frequency build-up control | | 10| SPR | Spread | — | 0.0 | 50 | | Stereo emphasis | | 11| SHP | Shape | — | 0.0 | 250 | * | Reverb envelope contour | | 12| SPI | Spin | % | 0 | 100 | | Randomization/modulation within reverb | --- ## VintageRev (Vintage Room Reverb) — type 28 EMT250/Quantec QRS-inspired small room reverb with warmth. 12 parameters including freeze. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PRE | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | SIZ | Size | % | 1 | 100 | | Room size (affects Decay range) | | 3 | DCY | Decay | s | 0.1 | 20.7 | * | Dissipation time (range depends on Size) | | 4 | LFX | Lo Mult | — | 0.1 | 10 | * | Low-frequency build-up | | 5 | HFX | Hi Mult | — | 0.1 | 10 | * | High-frequency build-up | | 6 | DEN | Density | % | 0 | 100 | * | Reflection density (slightly affects decay) | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | ERL | ER Level | % | 0 | 100 | * | Early reflection level | | 10| ERD | ER Delay | ms | 0.0 | 200 | | Early reflection delay time | | 11| MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 12| FRZ | Freeze | — | OFF | ON | * | Freezes reverb tail into continuous response | --- ## HallRev (Hall Reverb) — type 1 Lexicon 480L-inspired concert hall reverb. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.2 | 4.9 | * | Reverb dissipation time | | 3 | SIZ | Size | — | 2.0 | 200 | | Perceived hall size | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay in tail | | 5 | DIF | Diffusion | — | 1.0 | 30 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | LFX | BassMult | — | 0.5 | 2.0 | * | Low-frequency build-up | | 10| SPR | Spread | — | 0.0 | 50 | | Stereo emphasis | | 11| SHP | Shape | — | 0.0 | 250 | * | Reverb envelope contour | | 12| MOD | ModSpeed | — | 0.0 | 100 | | Reverb tail modulation rate | --- ## ChamberRev (Chamber Reverb) — type 26 Lexicon 480L-inspired chamber reverb. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PRE | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.3 | 28.9 | * | Reverb dissipation time | | 3 | SIZ | Size | m | 4.0 | 76 | | Perceived space size in meters | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay in tail | | 5 | DIF | Diffusion | % | 0 | 100 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | LFX | BassMult | — | 0.2 | 4.0 | * | Low-frequency build-up | | 10| SPR | Spread | — | 0.0 | 50 | | Stereo emphasis | | 11| SHP | Shape | — | 0.0 | 250 | * | Reverb envelope contour | | 12| SPI | Spin | % | 0 | 100 | | Randomization/modulation within reverb | --- ## PlateRev (Plate Reverb) — type 2 Lexicon PCM-70-inspired plate reverb. Bright, high initial diffusion — the sound of countless hit records since the 1950s. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.3 | 28.9 | * | Reverb dissipation time | | 3 | SIZ | Size | m | 4.0 | 39 | | Virtual room size in meters | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay in tail | | 5 | DIF | Diffusion | % | 0 | 100 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | LFX | BassMult | — | 0.2 | 4.0 | * | Low-frequency build-up | | 10| XOV | Xover | Hz | 10 | 500 | * | Crossover point for bass | | 11| MOD | ModDepth | — | 1.0 | 50 | | Reverb tail modulation depth | | 12| MDS | ModSpeed | — | 0.0 | 100 | | Reverb tail modulation rate | --- ## RichPltRev (Rich Plate Reverb) — type 3 Lexicon 480L-inspired plate with richer modulation. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | s | 0.3 | 28.9 | * | Reverb dissipation time | | 3 | SIZ | Size | m | 4.0 | 39 | | Virtual room size in meters | | 4 | DMP | Damping | Hz | 1000 | 20000 | * | High-frequency decay in tail | | 5 | DIF | Diffusion | % | 0 | 100 | | Initial reflection density | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HC | HiCut | Hz | 200 | 20000 | * | High-frequency exclusion | | 9 | LFX | BassMult | — | 0.2 | 4.0 | * | Low-frequency build-up | | 10| SPR | Spread | — | 0.0 | 50 | | Stereo emphasis | | 11| ATK | Attack | — | 0.0 | 100 | * | Reverb envelope contour | | 12| SPN | Spin | % | 0 | 100 | * | Randomization/modulation within reverb | --- ## GatedRev (Gated Reverb) — type 5 Lexicon 300/480L-inspired. Originally achieved by combining reverb + noise gate. Great for 1980s-style snare and punchy drums. 10 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | ms | 140 | 1000 | | Reverb dissipation time (note: ms, not seconds) | | 3 | ATK | Attack | — | 0.0 | 30 | * | How fast reflection density builds up | | 4 | DEN | Density | — | 1.0 | 50 | * | Number of reflections in the simulated room | | 5 | SPR | Spread | — | 0.0 | 100 | | How reflections distribute through envelope | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HIF | HiSvFreq | Hz | 200 | 20000 | * | Hi-shelving filter frequency at reverb input | | 9 | HIG | HiSvGain | dB | -30 | 0 | * | Hi-shelving filter gain at reverb input | | 10| DIF | Diffusion | % | 0 | 100 | | Initial reflection density | --- ## Reverse (Reverse Reverb) — type 6 Lexicon 300/480L-inspired. Turns the reverb trail around, placing it before the sound source. Ethereal, swelling crescendo effect. 9 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|------|--------|:----:|-------------| | 1 | PD | PreDelay | ms | 0.0 | 200 | | Time before reverb follows source | | 2 | DCY | Decay | ms | 140 | 1000 | | Reverb dissipation time (note: ms, not seconds) | | 3 | RIS | Rise | — | 0.0 | 50 | * | How quickly the effect builds up | | 4 | DIF | Diffusion | — | 1.0 | 30 | | Initial reflection density | | 5 | SPR | Spread | — | 0.0 | 100 | | Reflection distribution through envelope | | 6 | MIX | Mix | % | 0 | 100 | * | Wet/dry balance | | 7 | LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 8 | HIF | HiSvFreq | Hz | 200 | 20000 | * | Hi-shelving filter frequency at reverb input | | 9 | HIG | HiSvGain | dB | -30 | 0 | * | Hi-shelving filter gain at reverb input | --- ## ChorusVerb (Chorus & Reverb) — type 24 Combines chorus shimmer with a chamber reverb in one FX slot. Inspired by Lexicon PCM-70. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|-------|--------|:----:|-------------| | 1 | SPD | Speed | Hz | 0.0 | 4.0 | * | Chorus LFO rate (time-sync options: 4 to 1/64 bars) | | 2 | DEP | Depth | % | 0 | 100 | * | Chorus modulation depth | | 3 | DLY | Delay | ms | 0.5 | 50 | | Chorus delay time | | 4 | PHS | Phase | — | 0.0 | 180 | * | LFO phase offset between L/R channels | | 5 | WAV | Wave | % | 0 | 100 | | LFO shape: sine → triangular | | 6 | BAL | Balance | — | -100 | 100 | * | Chorus ↔ reverb balance | | 7 | PRE | PreDelay | ms | 0.0 | 200 | | Reverb pre-delay | | 8 | DCY | Decay | s | 0.1 | 5.0 | * | Reverb dissipation time | | 9 | SIZ | Size | — | 2.0 | 200 | | Reverb space size | | 10| DMP | Damping | Hz | 1000 | 20000 | * | HF decay in reverb tail | | 11| LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 12| MIX | Mix | % | 0 | 100 | * | Overall wet/dry balance | --- ## DelayVerb (Delay & Reverb) — type 25 Combines delay with chamber reverb in one FX slot. Inspired by Lexicon PCM-70. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|-------|--------|:----:|-------------| | 1 | TIM | Time | ms | 1.0 | 1500 | | Left channel delay time (time-sync options: 4 to 1/64 bars) | | 2 | PAT | Pattern | — | 1/4 | 1X | | Right channel delay ratio | | 3 | FHC | FeedHC | Hz | 200 | 20000 | * | High-frequency trim in feedback path | | 4 | FBK | Feedback | % | 0 | 100 | * | Feedback amount | | 5 | XFD | X-Feed | % | 0 | 100 | * | Amount of delay sent to the reverb | | 6 | BAL | Balance | — | -100 | 100 | * | Delay ↔ reverb balance | | 7 | PRE | PreDelay | ms | 0.0 | 200 | | Reverb pre-delay | | 8 | DCY | Decay | s | 0.1 | 5.0 | * | Reverb dissipation time | | 9 | SIZ | Size | — | 2.0 | 200 | | Reverb space size | | 10| DMP | Damping | Hz | 1000 | 20000 | * | HF decay in reverb tail | | 11| LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 12| MIX | Mix | % | 0 | 100 | * | Overall wet/dry balance | --- ## FlangVerb (Flanger & Reverb) — type 23 Combines flanger with chamber reverb in one FX slot. Inspired by Lexicon PCM-70. 12 parameters. | # | Abbr | Parameter | Units | Min | Max | Mod* | Description | |--:|------|-----------|-------|-------|--------|:----:|-------------| | 1 | SPD | Speed | Hz | 0.0 | 4.0 | * | Flanger LFO rate (time-sync options: 4 to 1/64 bars) | | 2 | DEP | Depth | % | 0 | 100 | * | Flanger modulation depth | | 3 | DLY | Delay | ms | 0.5 | 20 | | Flanger delay time | | 4 | PHS | Phase | — | 0.0 | 180 | * | LFO phase offset between L/R channels | | 5 | FBK | Feed | % | -90 | 90 | * | Positive or negative feedback | | 6 | BAL | Balance | — | -100 | 100 | * | Flanger ↔ reverb balance | | 7 | PRE | PreDelay | ms | 0.0 | 200 | | Reverb pre-delay | | 8 | DCY | Decay | s | 0.1 | 5.0 | * | Reverb dissipation time | | 9 | SIZ | Size | — | 2.0 | 200 | | Reverb space size | | 10| DMP | Damping | Hz | 1000 | 20000 | * | HF decay in reverb tail | | 11| LC | LoCut | Hz | 10 | 500 | * | Low-frequency exclusion | | 12| MIX | Mix | % | 0 | 100 | * | Overall wet/dry balance | --- ## Choosing a reverb | Want this... | Use this | Why | |---------------------------------|------------------------|----------------------------------------------| | Simple, great-sounding reverb | TC-DeepVRB (type 22) | Only 5 params; 9 preset modes cover most needs | | Warm ambience, minimal coloring | AmbVerb (type 4) | TailGain + Mod for depth without dominance | | Natural small room | RoomRev (type 27) | Size in meters; Spin for realism | | Vintage warmth | VintageRev (type 28) | ER controls + Freeze for textures | | Classic hall | HallRev (type 1) | Workhorse; good Shape + Spread control | | Bright plate | PlateRev (type 2) | Crossover + mod for shimmer | | Rich, animated plate | RichPltRev (type 3) | Attack + Spin for evolving tails | | Punchy 80s drums | GatedRev (type 5) | Fast decay (ms); Attack + Density | | Ethereal swells | Reverse (type 6) | Rise control for crescendo builds | | Chorus + reverb (save a slot) | ChorusVerb (type 24) | Balance knob blends the two | | Delay + reverb (save a slot) | DelayVerb (type 25) | X-Feed sends delay into reverb | | Flanger + reverb (save a slot) | FlangVerb (type 23) | Negative feedback for jet-engine sweeps |