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- Jul 24, 2006
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Helix A4 Competition 4-channel Amplifier
Used for 7 month, still in extremely good condition
http://i102.photobucket.com/albums/m118/louisbrand/Helix.jpg
Driver with class A technology
Outputstage with 24 MosFet transistors
RMI (realmixed input) for forming an optimised mono-summation signal from the left and right channels
NFI (noisefree input) for distortion-free listening
Intelligent active crossover
Bass Boost Control 0-9 dB, adjustable center frequencies 30-120 Hz
Mono/Bridged/ Stereo switch
8.0 volt input for connection to any signal source
ADC - Anti Distortion Choke to eliminate distortions
Intelligent temperature and power controlled switching power supply
Separate speaker protection circuit with current limitation for speaker short-circuiting, cable contact with car chassis, low impedance and wrong connection
CPS - Color Protection System
SMD - Surface Mounting Devices for constant assembling quality
Double-sided, extra strong (2x 110u) and copper plated pc-board for best power and signal transmission and protection against vibrations
24-karat gold-plated solid connectors suitable for 25 m²/ gauge 4 cables
Temperature-optimised heatsink for highest efficiency
1% accurate components for perfect audiophile sound quality and maximum power
Smoked-grey plexi cover with both side printing
Technical Data:
Cont. power rating RMS/Max. power at 4 Ohms RMS/12 V 4 x 60/85 Watt
Cont. power rating RMS/Max. power at 4 Ohms RMS/13,8 V 4 x 85/160 Watt
Cont. power rating RMS/Max. power at 2 Ohms RMS/13,8 V 4 x 153/300 Watt
Cont. power rating RMS/Max. power at 4 Ohms RMS/13,8 V bridged 2 x 270/450 Watt
Cont. power rating RMS/Max. power at 2 Ohms RMS/13,8 V bridged 2 x 395/650 Watt
Total harmonic distortion: < 0,009%
Signal to noise ratio: > 100 dB
Damping factor: > 450
Frequeny range: 20 Hz -20 kHz
TIM distortion: < 0,016%
Input sensitivity: 500 mV - 8 V
Fuse: 3 x 25 A
Input impedance: 10 kOhm
Bassboost adjustable channel: C und D 0 - 9 dB
Dimensions (HxWxD) mm: 35 x 240 x 432
Weight netto: 4,7 kg
http://www.audiotec-fischer.com/englisch/produkte/a4.html
Used for 7 month, still in extremely good condition
http://i102.photobucket.com/albums/m118/louisbrand/Helix.jpg
Driver with class A technology
Outputstage with 24 MosFet transistors
RMI (realmixed input) for forming an optimised mono-summation signal from the left and right channels
NFI (noisefree input) for distortion-free listening
Intelligent active crossover
Bass Boost Control 0-9 dB, adjustable center frequencies 30-120 Hz
Mono/Bridged/ Stereo switch
8.0 volt input for connection to any signal source
ADC - Anti Distortion Choke to eliminate distortions
Intelligent temperature and power controlled switching power supply
Separate speaker protection circuit with current limitation for speaker short-circuiting, cable contact with car chassis, low impedance and wrong connection
CPS - Color Protection System
SMD - Surface Mounting Devices for constant assembling quality
Double-sided, extra strong (2x 110u) and copper plated pc-board for best power and signal transmission and protection against vibrations
24-karat gold-plated solid connectors suitable for 25 m²/ gauge 4 cables
Temperature-optimised heatsink for highest efficiency
1% accurate components for perfect audiophile sound quality and maximum power
Smoked-grey plexi cover with both side printing
Technical Data:
Cont. power rating RMS/Max. power at 4 Ohms RMS/12 V 4 x 60/85 Watt
Cont. power rating RMS/Max. power at 4 Ohms RMS/13,8 V 4 x 85/160 Watt
Cont. power rating RMS/Max. power at 2 Ohms RMS/13,8 V 4 x 153/300 Watt
Cont. power rating RMS/Max. power at 4 Ohms RMS/13,8 V bridged 2 x 270/450 Watt
Cont. power rating RMS/Max. power at 2 Ohms RMS/13,8 V bridged 2 x 395/650 Watt
Total harmonic distortion: < 0,009%
Signal to noise ratio: > 100 dB
Damping factor: > 450
Frequeny range: 20 Hz -20 kHz
TIM distortion: < 0,016%
Input sensitivity: 500 mV - 8 V
Fuse: 3 x 25 A
Input impedance: 10 kOhm
Bassboost adjustable channel: C und D 0 - 9 dB
Dimensions (HxWxD) mm: 35 x 240 x 432
Weight netto: 4,7 kg
http://www.audiotec-fischer.com/englisch/produkte/a4.html
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