Audison Thesis HV ventilation

Audison Thesis HV venti - 2-Channel Power Amplifier in Dual‑Mono with High Current Reserve

The Audison Thesis HV venti is a 2‑channel amplifier designed for uncompromising signal purity and performance. Its dual‑mono architecture with four Synchro‑PWM power supplies, a MOSFET‑/BJT‑hybrid output stage with IGBT technology, and a Class A preamplifier form the basis for controlled drive and high dynamics – even with low-impedance loads. You get a power amplifier that consistently uses discrete components and offers symmetrical signal handling.

Technical Highlights

• Dual‑Mono Design: Four Synchro‑PWM power supplies for fast transient response and maximum channel separation.
• MOSFET‑BJT‑Hybrid: Discrete IGBT topology with two Hitachi‑DMOS stages as drivers for complementary Sanken Power‑BJTs (30 A peak, 200 W power dissipation each).
• Class‑A Preamplifier and Drivers: Symmetrical design up to the driver outputs, dedicated 90‑V power supply per channel, separate 150‑V power supply, thermally stabilized.
• Input Stages: Symmetrical input with JFET‑differential (first stage) and complementary BJT‑differential (second stage); Cascode‑voltage amplifier with buffer.
• Signal routing via relays, completely discrete components, separate power supply board for interference reduction.
• "Dual Power" for switching between Hi‑Current and Hi‑Power; "Bias Selector" for adjusting the Class‑A proportion.
• Integrated crossover module and 5‑mm aluminum housing with side cooling channels.

Technical Data

• Channels: 2
• Amplifier Class: A‑Class
• High‑Level Input: Yes
• Low‑Level Input: Yes
• Digital Input: No
• Supply Voltage: 11 – 16 V DC
• Idle Current: 4.2 A
• Idle Current in Switched-Off State: 0.006 mA
• Current Consumption @ 14.4 V DC, 2 Ω, Max. Music Power: 90 A
• Remote IN: 7 – 16 V DC, 1 mA

• THD (100 Hz, 4 Ω, 70% Pn): < 0.05 %
• Frequency Response (−3 dB, 2 VRMS, 4 Ω): 4 Hz – 75 kHz
• S/N (A‑weighted @ 1 V): 100 dB
• Damping Factor (1 kHz, 4 Ω): 80
• Input Sensitivity Pre‑In: High 0.25 – 1.6 VRMS; Low 1 – 7 VRMS
• Total RMS Power: 1600 W
• Output Power (RMS) @ 14.4 V DC, 1% THD:
• 2 x 400 W into 4 Ω
• 2 x 800 W into 2 Ω
• 1 x 900 W into 4 Ω (bridged)
• Adjustable Crossover: No (external/supplied modules)

• Inputs: Pre IN L/R (ABS)
• Outputs (Bypass): Pre OUT L/R (ABS)
• Filter Path A (Stereo): High‑/Low‑pass 45/55/65/80 Hz, 12 dB/Oct.
• Filter Path B (Mono): Low‑pass 45/55/65/80 Hz, 24 dB/Oct.

• Fuse: 100 A
• Further Functions: Demo‑Mode ext. Supply 12 V DC / 600 mA; Ext. Cap Terminals min. 18 V DC
• Weight: 15 kg

• Dimensions (A/B/C): 510 × 85 × 280 mm

• Special Features: IGBT‑output stage circuitry; Class‑A preamplifier, intermediate stages and drivers; Dual‑Mono with four Synchro‑PWM power supplies; exclusively discrete components; relay‑signal paths; fully symmetrical inputs; separate power supply board; "Dual Power"; "Bias Selector"; high-quality crossover module included; solid 5‑mm aluminum housing with side cooling channels.

Installation & Compatibility

The Thesis HV venti operates as a 2‑channel power amplifier or bridged as a mono amplifier into 4 Ω. Thanks to high‑ and low‑level inputs, it can be integrated into both factory and aftermarket systems. The Pre‑Outs simplify the setup of larger systems. With 100‑A fusing and a 11–16 V vehicle electrical system range, the power supply is clearly defined. The external/supplied crossover module provides fixed crossover frequencies (45/55/65/80 Hz) – stereo with 12 dB/Oct., mono with 24 dB/Oct. "Dual Power" allows you to adjust the operation to current or power requirements, while the "Bias Selector" controls the Class‑A proportion for your setup. The compact dimensions of 510 × 85 × 280 mm facilitate placement in the vehicle.