Coilshift - Standard Jazz Bass

COILSHIFT: STANDARD JAZZ BASS EDITION Transform your stock Fender Jazz Bass into 14 legendary active, vintage, and acoustic pickup configurations. OVERVIEW Coilshift is the first collection of pickup and control-harness digital twins engineered for Neural Amp Modeler (NAM) and the Darkglass Anagram pedalboard. Rather than modeling an amplifier or speaker cabinet, these models capture the fundamental electro-acoustic physics of: • Pickup coil inductances, eddy currents, and DC resistance • Magnetic aperture geometry and spatial string comb-filtering • Era-accurate potentiometer loading and tone capacitor values • Instrument cable capacitance drag (750 pF) • Active onboard discrete preamps and EQ buffers This edition is specifically calibrated for a 34" Standard Jazz Bass with stock passive neck and bridge single-coil pickups. RECOMMENDED SIGNAL CHAIN Place Coilshift as the very first block in your signal path: [Fender Jazz Bass] -> [Block 1: Coilshift NAM Preamp] (Input / Pickup Front-End) -> [Block 2: Amp / Drive / Preamp] (Darkglass B7K, SVT, B-15, etc.) -> [Block 3: Speaker Cabinet IR] (8x10, 4x10, 1x15, etc.) -> [FOH / Audio Interface / DAW] JAZZ BASS KNOB GUIDE Keep physical Master Tone at 100% (Wide Open) for all models. Set your two physical Volume knobs according to the target model: Both Volumes 100% (Parallel Pair) • Use for: 01, 02, 07, 08, 11 • Provides dual single-coil aperture scoop and branch summing. Neck 100%, Bridge 0% (Solo Neck) • Use for: 04, 05, 06, 12, 14 • Provides single-line sensing with maximum low-frequency string excursion. Bridge 100%, Neck 0% (Solo Bridge) • Use for: 03, 09, 10, 13 • Places sensing at the bridge datum (63.5mm), only 2.5mm from the StingRay spot. THE 14 DIGITAL TWIN VOICINGS Jazz Bass Family 01. Modern Active Jazz Bass (NYC 2-Band) Knob Setting: Both Volumes 100% Sadowsky-style active 2-band buffer with cable isolation (1M ohm in, 100 ohm out). Wideband hi-fi shimmer with +4 dB active bass/treble boost. 02. Vintage '60s Jazz Bass Pair Knob Setting: Both Volumes 100% True 1:1 acoustic and electrical identity match (0.0 dB flat). Dual single-coils loaded by vintage dual 250k volume pots (125k net) and 47nF cap. 03. '60s Jazz Bridge Single-Coil Knob Setting: Bridge 100%, Neck 0% True 1:1 physical identity match (63.5mm datum). Focused midrange growl and Jaco Pastorius staccato finger bite. Precision Family 04. Modern Ceramic Split-P (Boutique 500k) Knob Setting: Neck 100%, Bridge 0% Single-sensing line captures full string fundamental excursion. Modeled after Bartolini 8CBP with 500k harness, 22nF cap, and hybrid treble bleed for tight percussive attack. 05. Vintage '62 P-Bass (Alnico V) Knob Setting: Neck 100%, Bridge 0% Vintage CTS 250k harness with Paper-in-Oil 47nF cap. Lower eddy damping, touch-sensitive dynamics, and organic woody bloom. 06. Split-P Motown Rolloff (47nF Shunt) Knob Setting: Neck 100%, Bridge 0% Pure, pillowy sub-bass fundamental mass (James Jamerson / Pino Palladino flatwound tone). P/J & Music Man 07. Modern Active P/J Bass Knob Setting: Both Volumes 100% Dual-pickup branch matching with Sadowsky/Spector active 2-band buffer. Aggressive modern slap snap and deep sub-bass foundation. 08. Vintage '80s Passive P/J Bass Knob Setting: Both Volumes 100% 1980s Fender Special / Yamaha BB style Alnico V split/single pair with dual 250k volume loading. Thick hard-rock punch and woody attack. 09. Music Man StingRay (Active 2-Band MM) Knob Setting: Bridge 100%, Neck 0% The Jazz bridge pickup (63.5mm) sits only 2.5mm from the genuine StingRay sweet spot (66.0mm). Synthesizes the authentic 2.5 kHz hollow mid-scoop and 7.2 kHz metallic clank peak. Progressive, Rock & Acoustic Transducers 10. Rickenbacker 4003 Bridge (4.7nF HPF) Knob Setting: Bridge 100%, Neck 0% High-output bridge coil with vintage 4.7nF series high-pass filter. Cuts sub-bass mud below 150 Hz for aggressive pick clang and grit. 11. P/MM Hybrid (Series Sum) Knob Setting: Both Volumes 100% Precision split-coil and Music Man humbucker in series. Massive +6.0 dB inductive voltage boost with forward, muscular 1.6 kHz punch. 12. Gibson Mudbucker Ultra Series Knob Setting: Neck 100%, Bridge 0% Extreme overwound neck humbucker (14.4H inductance). Subterranean low end with steep natural top-end rolloff. 13. Dingwall Fanned Multi-Scale Bridge Knob Setting: Bridge 100%, Neck 0% 34"-37" fanned-fret angled bridge sweet spot (48.0mm datum) with high-tension wave-speed clank filter. 14. Upright Acoustic Double Bass (Bridge Piezo) Knob Setting: Neck 100%, Bridge 0% Direct bridge force sensor simulation (Underwood / Realist style) featuring velocity-to-force leaky integration, 32 Hz rumble cut, and acoustic body bloom. LICENSE & DISCLAIMER License: These neural model files are licensed for personal and commercial musical performances, recording, and production. Redistribution, sublicensing, or resale of the raw model files or derived profiles without permission is strictly prohibited. Trademark Disclaimer: All product names, trademarks, and registered trademarks (such as Fender, Precision Bass, P-Bass, Jazz Bass, J-Bass, Music Man, StingRay, Rickenbacker, Gibson, Dingwall, EMG, and Darkglass) are the property of their respective owners. These names and references are used solely to identify the historical instruments, physical pickup architectures, and analog circuits analyzed and modeled in this project. Coilshift is an independent project and is not affiliated with, sponsored by, or endorsed by any of these manufacturers.