ZIAA ARCHIVE RECORDPROTOTYPES
PROT-039prototypeVERIFIED RECORD
3-Meter Longitudinal Spring Reverb Tank with Magnetic Eddy Dampers (Revision 2.3)
PROT-039: SPRING-LONGITUDE-V2CLEARANCE: 4-DELTASTATUS: ARCHIVED SUPERSEDEDYEAR: 2023
3-Meter Longitudinal Spring Reverb Tank with Magnetic Eddy Dampers (Revision 2.3)
Discipline: Experimental Audio Systems · Lead Researcher: Rowan Vance
OPERATIONAL ABSTRACT
A long-decay mechanical spring reverberator housing three parallel high-tensile steel springs, modulated by adjustable permanent neodymium magnetic damping brakes. Enhanced revision 2 with improved low-noise shielding and updated real-time firmware.
TECHNICAL SUMMARY & TRANSDUCTION DYNAMICS
Voice coil transducers directly drive longitudinal acoustic waves down tensioned steel coils. Movable copper plates create magnetic eddy currents that dynamically shorten reverberation decay from 12s to 1.5s. Calibrated for studio and field use under ZIAA experimental protocols. Harmonic distortion measured under 0.02% across primary operating range.
ENGINEERING SPECIFICATIONS
DIMENSIONS
560 × 280 × 155 mm
OPERATIONAL BANDWIDTH
25 Hz – 54 kHz
POWER CONSUMPTION
36 W (12V DC Linear Supply)
SIGNAL-TO-NOISE
114 dB (A-Weighted @ 1 kHz)
PRIMARY TRANSDUCER
High-compliance magnetic driver transducers with balanced pickup coils
COMPUTATIONAL CORE / DSP
Discrete discrete class-A JFET preamplifiers with active EQ filtering
VECTOR TECHNICAL SCHEMATIC // BLUEPRINT
FIG 4.3 // NON-HERMITIAN WAVEGUIDE & STANDING WAVE VELOCITY
NODE: SPRING-LONGITUDE-V2-CAVPLAYABLE PROTOTYPE ACOUSTIC EMISSION BENCH
ZIAA ACOUSTIC SYNTHESIS TEST BENCH // V4.1STANDBY
SPRING-LONGITUDE-V2 // CALIBRATION PROFILE
CH-A TIME-DOMAIN OSCILLOSCOPE (1024-PT)STEREO BINAURAL
CH-B 64-BAND SPECTRAL OCTAVE DECOMPOSITION20 Hz – 20 kHz
CARRIER165.0 Hz
FM RATE12.1 Hz
BINAURAL Δ±4.5 Hz
CUTOFF960 Hz
RESONANCE Q12.0
CAVITATION14%
WAVE:
FILTER:
35%
BILL OF MATERIALS (BOM) & COMPONENT TOLERANCES
| Component | Supplier | Part No. | Tolerance |
|---|---|---|---|
| Precision Audio Transducer Assembly | ZIAA Precision Machining Shop | ZIAA-TX-138 | ±0.02 mm |
| Ultra-Low-Noise Operational Amplifiers | Texas Instruments / Burr-Brown | OPA1612A-SOIC8 | 0.000015% THD+N |
| Embedded DSP Microcontroller Core | PJRC / STMicroelectronics | Teensy 4.1 ARM Cortex-M7 | Industrial -40C to +85C |
| Conductive Plastic Continuous Potentiometers | Bourns Electronics | 3852A-282-103AL | ±10% Linear |
| Machined Anodized Aluminum Enclosure | ZIAA Mechanical Prototyping Bench | ENC-AL-208 | MIL-A-8625 Type II |
BENCH & FIELD OPERATION NOTES
- High acoustic output capability: monitor SPL levels during resonant feedback experiments.
- Precision optical components: protect lenses from direct dust and moisture during field deployment.
SPECULATIVE PATENTS:PAT-2023-039
FIELD SITES:Field Station Epsilon (Sub-Glacial Hydrophone Array)