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Old 5th September 2012, 04:44 PM   #1
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Join Date: Jul 2012
Location: Verona
Default what do you think about this amplifier

Hi I've made my first MOSFET power amplifier, in the output stage I used the IRFP140 with IRFP 9140. The features are these:
rails +/- 21 V unregulated
output rms power 20W into 4ohm
thd 1 khz into 4 ohm 0.0028%
thd 20khz no load 0.002%, 8 ohm 0.03%, 4 ohm 0,064%
signal to noise ratio 97 dB (1W into 4ohm), 108 dB (20W 4ohm)
thd is referred into pure resistive loads.
So how is my amplifier? what do you think about it?
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Old 5th September 2012, 05:10 PM   #2
Bone is offline Bone  United Kingdom
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Location: Dorset, UK
Can't tell as there are no pictures nor a circuit
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Old 5th September 2012, 05:21 PM   #3
qusp is offline qusp  Australia
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Location: Brisbane, Australia
we dont do Ouija board readings here
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Old 5th September 2012, 07:06 PM   #4
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Join Date: Nov 2005
Location: East Coast of South Africa
Originally Posted by qusp View Post
we dont do Ouija board readings here
An why not? We seem to do everything else here.
Kindest regards
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