Four Synchro-PWM power supplies enable a very fast transient response and create a dual-mono configuration.
The HV venti utilizes a unique power stage topology with discrete IGBTs consisting of two Hitachi DMOS driving two pairs of complementary Sanken Power BJTs, each rated for 30A peak current and 200W power dissipation.
A-CLASS PREAMPLIFIER AND DRIVER
It consists of two groups, the front-end preamplifier and the control unit. The entire stage is balanced up to the driver outputs. The supply voltage is 90 V and is intended specifically for this stage and for the two separate channels. The separate 150 V power supply is thermally stabilized and class A biased. The input is balanced with the first stage a complementary JFET differential and the second stage a complementary BJT differential. The voltage amplifier is a cascode amplifier with a buffer to drive the output stage.
SPECIFICATIONS
TECHNICAL DATA OF THE AMPLIFIER
- Channels 2
- Amplifier class A-Class
- Hi Level Input Yes
- Low Level Input Yes
- Digital input No
- Supply voltage / fuse 11 - 16 VDC
- No-load current 4.2 A
- No-load current when switched off 0.006 mA
- Power consumption @ 14.4 VDC, 2Ω, max. music power 90 A
- Remote IN 7 - 16 VDC - 1 mA
AMPLIFIER SECTION
- Verzerrung - THD @ 100 Hz, 4Ω, 70% Nennleistung <0.05%
- Bandwidth A (-3 dB, 2 VRMS, 4 Ω): 4Hz ÷ 75 kHz
- S/N ratio A (A weighed @1 V): 100 dB
- Attenuation 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
INPUTS
- 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.
MORE
- Fuse 100 A
- Other Fucntions Demo mode ext. supply: 12 VDC - 600 mA ; Ext. cap terminals: 18 VDC cap min
- Weight 15 kg
DIMENSIONS
- Dimension A 510 mm
- Dimension B 85 mm
- Dimension C 280 mm
PROPERTIES
- Exclusive circuit IGBT (Insulated Gate Bipolar Transistor).
- A class preamplifier, intermediate stages and drivers.
- Dual-mono design with four power supply units in Synchro-PWM
configuration.
- Manufactured exclusively with discrete components.
- The signal switching is carried out exclusively with relays.
- Fully balanced input circuit.
- Power supply on separate circuit board to avoid interference.
- Dual Power" function for switching between Hi-Current and Hi-Power.
- Bias Selector' function to change the percentage in the A class.
- High-quality crossover module included in the scope of delivery.
- 5 mm aluminum housing that connects two lateral cooling channels.
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