BEYOND
THE ABSOLUTE
In the Marche region, a geographical area world-famous for the production of esteemed musical instruments, Audison started its long history in the pursuit of audio preformance perfection.
Four Synchro-PWM power supplies allow a very fast transient current response and create a Dual Mono configuration.
HV venti employs a unique output power stage topology, discrete IGBT, made by two Hitachi DMOS driving two pairs of complementary Sanken power BJT, each rated for 30A peak current and 200 W dissipation.
It is made of two groups, Front End pre-amplifier and control unit. The whole stage is balanced up to the driver outputs. The power supply voltage is 90 V and is specific for this stage and dedicated to the two separate channels. The separate 150 V power supply is thermally stabilized and A Class biasing. Input is balanced with the first stage, complementary JFET differential and the second stage, complementary BJT differential. The voltage amplifier is Cascode type with a buffer to drive the output stage.
Channels | 2 |
Class | A-Class |
Hi Level Input | Yes |
Low Level Input | Yes |
Digital Input | No |
Power supply voltage / fuse | 11 ÷ 16 VDC |
Idling current | 4.2 A |
Idling current when off | 0.006 mA |
Consumption @ 14.4 VDC, 2Ω, Max Musical Power | 90 A |
Remote IN | 7 ÷ 16 VDC - 1 mA |
Distortion - THD @ 100 Hz, 4Ω, 70% Rated Power | <0.05% |
Bandwidth A | (-3 dB, 2 VRMS, 4 Ω): 4Hz ÷ 75 kHz |
S/N ratio A | (A weighed @1 V): 100 dB |
Damping factor A | (1kHz, 4 Ohms): 80 |
Input sensitivity Pre-In | Input sensitivity (high): 0.25 ÷ 1.6 VRMS Input sensitivity (low): 1 ÷ 7 VRMS |
Total Power RMS | 1600 W |
Output Power (RMS) @14.4 VDC, 1% THD |
• 2 Ch: 400 W x 2 (4Ω) • 2 Ch: 800 W x 2 (2Ω) • 1 Ch: 900 W x 1 (4Ω) |
Adjustable Crossover | No |
Input Type | Pre IN: L/R (ABS) |
Filters Outputs | Pre OUT (pre in bypass): L/R (ABS) |
Filter Pass A | Crossover frequencies High pass & Low pass stereo 45 - 55 - 65 - 80Hz, 12dB/oct. |
Filter Pass B | Crossover frequencies Lo-pass mono 45 - 55 - 65 - 80Hz, 24dB/oct. |
Fuse | 100 A |
Other Fucntions | Demo mode ext. supply: 12 VDC - 600 mA ; Ext. Cap terminals: 18 VDC cap min |
Weight | 15 kg |
Dimension A | 510 mm |
Dimension B | 85 mm |
Dimension C | 280 mm |
According to the definition of HiRes audio provided by JAS (Japan Audio Society – jas-audio.or.jp), HV venti far exceed the above 40 kHz bandwith analog requirement, providing an astonishing 5 ÷ 75k Hz (@ -3 dB, 2 VRMS, 4 Ω).
Unique output power stage topology, FUNCTION discrete IGBT, realized with a complementary pair of Hitachi DMOS driving two pair of complementary Sanken power BJT, each rated for 30A peak current and 200W dissipation.
A revolutionary function allowing the user to select the amplifiers output power configuration and the operating class.
Four Synchro-PWM power supplies allow for a very fast transient current response and to create a Dual Mono configuration.
Fully balanced JFET differential preamplifier inputs with output buffer for control unit.