Productbeschrijving
Thesis HV venti is a 2-Channel Amplifier from Audison with dual-mono construction and four synchro-PWM power supplies.
The MOSFET-BJT hybrid configuration uses discrete IGBTs, two Hitachi DMOS, and two pairs of complementary Sanken Power BJTs, each designed for 30 A peak current and 200 W power loss.
The Class A preamplifier and driver is symmetrically built up to the driver outputs, with 90 V supply for the front-end stage and two separate channels.
A separate 150 V power supply is thermally stabilized and biased in Class A.
The symmetrical input combines a complementary JFET differential and a complementary BJT differential; the voltage amplifier is implemented as a cascode with a buffer.
The output power is 400 W x 2 at 4 Ohm, 800 W x 2 at 2 Ohm, and 900 W x 1 at 4 Ohm at 14.4 VDC and 1% THD, with a total RMS power of 1600 W.
The bandwidth is 4 Hz to 75 kHz, the S/N ratio is 100 dB, and the damping factor is 80.
Additional features include fully relay-switched signal routing, exclusively discrete components, Dual Power and Bias Selector functions, Hi and Low Level inputs, and a 5 mm aluminum housing with two side cooling channels.
Features 2-Channel Amplifier Dual-mono construction with four synchro-PWM power supplies MOSFET-BJT hybrid configuration with discrete IGBTs; two Hitachi DMOS drive two pairs of complementary Sanken Power BJTs (each 30 A peak current, 200 W power loss) Class A preamplifier and driver, symmetrically built up to the driver outputs Fully symmetrical input circuit with complementary JFET differential (first stage) and complementary BJT differential (second stage) Voltage amplifier as a cascode with buffer to drive the output stage Separate power supply: 90 V for front-end and channels; separate 150 V power supply, thermally stabilized and biased in Class A Manufactured exclusively with discrete components; signal routing exclusively via relays Power supply on a separate board Dual Power function to switch between Hi-Current and Hi-Power Bias Selector to change the Class A percentage Hi Level Input and Low Level Input High-quality Crossover module included 5 mm aluminum housing with two side cooling channels Technical Specifications Channels: 2 Amplifier Class: A-Class Hi Level Input: Yes Low Level Input: Yes Digital Input: No Supply Voltage: 11–16 VDC Idle Current: 4.2 A Idle Current when Off: 0.006 mA Power Consumption at 14.4 VDC, 2 Ohm, maximum music power: 90 A Remote IN: 7–16 VDC, 1 mA Distortion (THD) @ 100 Hz, 4 Ohm, 70% rated power: < 0.05 % Bandwidth (-3 dB, 2 VRMS, 4 Ohm): 4 Hz – 75 kHz Signal-to-Noise Ratio (A-weighted @ 1 V): 100 dB Damping Factor (1 kHz, 4 Ohm): 80 Input Sensitivity (Pre-In high): 0.25 – 1.6 VRMS Input Sensitivity (Pre-In low): 1 – 7 VRMS Total RMS Power: 1600 W Output Power (RMS) @ 14.4 VDC, 1% THD, 2 channels at 4 Ohm: 400 W x 2 Output Power (RMS) @ 14.4 VDC, 1% THD, 2 channels at 2 Ohm: 800 W x 2 Output Power (RMS) @ 14.4 VDC, 1% THD, 1 channel at 4 Ohm: 900 W x 1 Adjustable Crossover: No.
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