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Symmetrical Output Amplifier
The
Updated Printed circuit board for this Amplifier is now Available! So
see the Available PCB's page.
The
Update PCB for this Amplifier Module is available Now! , It features
improved bandwidth, much better Thermal compensation for the MOSFET O/P
stage. This modification also allows the use of IRF Devices to be used
with this design. Which previously was a problem due to the special
thermal control requirements needed for these devices.
Updated
schematic of Symmetrical Amplifier
The
Amplifier is fully designed and built be me and was first published in
Silicon Chip Magazine in June 1994 as a Power Amplifier Module and has
been sold all over Australia, New Zealand, Thailand, Ceylon, Malaysia
and Greece.
It has a power rating of 230 Watts RMS into 8 Ohms Per Channel and 400
Watts RMS into 4 Ohms Per Channel.
Total Harmonic Distortion is typically 0.005%, Signal to Noise Ratio of
-122dB unweighted(20Hz to 20Khz)
A-weighted -126dB, Damping Factor Greater than 200 at 8 Ohms. The Power
supply is a conventional unregulated supply, consisting of a 600VA
Toroidal Transformer with 24000uF electrolytic capacitors per voltage
rail.
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