TH OTTO bit
TH OTTO bit DSP Amplifier | 2200 W | 14 CH DSP + 8 x 275 W @ 2 ohm | D-class Fully Bridgeable
TH OTTO BIT is the intelligence at the centre of the system. Two Analog Devices processors work in parallel at 24 bit/96 kHz, preserving the full resolution of the recording, while EVOCA models the behaviour of every Thesis driver and corrects deviations before they become audible. Eight channels, sixteen DSP channels over the A2B bus, and bit Wave to shape every zone on board.
Amplifier Tech Data
| Channels | 8 |
| Class | ADC (Advanced D-Class) |
| Power supply voltage / fuse | 11 ÷ 15 VDC |
| Idling current | 2.7 A |
| Standby Current Draw | 1.7 mA |
| Consumption @ 14.4 VDC, 2Ω, Max Musical Power | 100 A |
| Remote IN | 4 ÷15 VDC (1 mA) |
| Remote OUT | 6.5 ÷15 VDC (150 mA) |
| Efficiency Rated Power | 85% (4 ohms rated power) |
Amplifier Stage
| Distortion - THD @ 1 kHz, 4Ω, 70% Rated Power | <0.04% THD+N @70% Rated Output Power, 4Ω, 1kHz |
| Bandwidth @ -1.5 dB | 7 - 42k Hz |
| Damping factor @ 1 kHz, 4Ω, 2 VRMS | 125 |
| S/N ratio (A weighted @ 1 V Input) Master Input | 98 dBA |
| Total Power RMS | 2200 W |
| Minimum load impedance | 2 ohms (STEREO) / 4ohms (BRIDGE) |
| Output Continuous Power (RMS) @14.4 VDC, 1% THD |
170W x 8 (4ohms) 275W x 8 (2ohms) 550W x 4 (4ohms - Brigded 1/2, 3/4, 5/6, 7/8) |
| Adjustable Crossover | Yes |
Inputs / Outputs
| Pre-In Sensitivity | 0.6 ÷ 6 Vrms (10 kΩ impedance) |
| Digital Input | Yes |
| Pre Outputs | 6 |
| Low Level Inputs | 12 |
| Digital IN | Coaxial S/PDIF , Max 96 kHz / 24 bit |
| Sub Out (RCA Pre Out) | 6 Vrms |
Digital Signal Processor
| Audio DSP Converter | 2 x Analog Devices ADAU1467 automotive qualified audio processor. |
| Filter type | Full / High-Pass / Low-Pass / Band-Pass |
| Filter mode and slope |
Linkwitz-Riley @ 12/24/36/48 dB/Oct. Butterworth @ 6/12/18/24/30/36/42/48 dB/Oct. Bessel @ 6/12/18/24/30/36/42/48 dB/Oct. Chebyshev @ 6/12/18/24/30/36/42/48 dB/Oct. QLP @ 6 dB/Oct. |
| Crossover frequency | 20 Hz ÷ 20 kHz |
| Phase control | 0° / 180°, All-Pass filters |
| Analog Input Equalizer (20 ÷ 20k Hz) | 12 Biquad + Delay |
| Output Equalizer | Parametric/Graphic Biquad: 15 poles, 20 Hz ÷ 20 kHz |
| Time Alignment Distance | 0 ÷ 510 cm / 0 ÷ 200.8 inches |
| Time Alignment Delay | 0 ÷ 15 ms |
| Time Alignment Step | 0.01ms |
| Input/Output electrical RTA | Yes |
Control Connections
| DRC Port | CAN-BUS |
| ADC Port | RS-232 |
| 1 Wire | Customizable functions (+ 12 V activated) over 4 Control Inputs |
| From / To Personal Computer | USB-C 1.1 / 2.0 / 3.0 Compatible |
General Requirements
| PC connections | Windows 10, Windows 11 (min. res. 1024 x 768) |
| Software/PC requirements | Bit Wave |
| Ambient operating temperature range | -15°C ÷ 55°C (5 °F to 131 °F) |
Dimensions
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| Dimension A | 360 mm (14.17 in) |
| Dimension B | 320 mm (12.6 in) |
| Dimension C | 203 mm (7.99 in) |
| Dimension D | 163 mm (6.42 in) |
| Dimension E | 55 mm (2.17 in) |
| Dimension C1 | 239 mm (9.41 in) |
Features
- Dual-Core DSP architecture, 2 x Analog Devices ADAU1467
- Processing at 24 bit/96 kHz, Hi-Res Audio certified
- EVOCA: predictive driver modeling that corrects deviations before they become audible
- bit Wave tuning software: routing, parametric EQ and per-zone configuration
- A2B digital bus, up to 16 channels over a single twisted pair
- CAN-BUS, RS232 and customizable control wires for on-board integration
- Available in 12 V and 24 V architecture
Technologies
The full resolution of the recording, at sea.
Certification issued by the Japan Audio Society under IEC 60268-5 test conditions, covering the complete system from source to speaker. Frequency response extended to 40 kHz, one octave beyond the market standard in the high frequencies. Audison is the only brand in the marine industry to offer complete certified systems.
Two processors, one system.
Two Analog Devices processors working in parallel with dual microcontroller units, processing at 24-bit/96 kHz for routing flexibility, high-performance signal processing and system scalability.
Correction that happens before distortion does.
Patented loudspeaker virtualisation and protection technology based on Wave Digital Filters. It uses the Thiele and Small parameters of each driver for adaptive modeling, reduces distortion, increases SPL within safe operating limits and protects the speaker in real time through coil current sensing. Predictive correction, not reactive.
The system, made tunable.
Tuning software with signal routing, parametric equalisation and per-zone configuration in a single interface, designed to turn a complex multi-zone marine installation into a controlled, repeatable result.
Sixteen channels, one twisted pair.
Simultaneous transmission of audio streaming and control signals for up to sixteen channels over a single cable, with no intermediate analog conversion. RS232, CAN Bus and analog trigger interfaces complete the integration with onboard systems.
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