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Ovation sx-Amp Interior View

Ovation sx-Amplifier: A 15 W Class A Current Feedback Amplifier

March 22, 2014 · by Bonsai · in Power Amplifiers

Update January 2018: For the sx-Amplifier, you can now buy a complete set of very high quality Double Sided THP Gold Flashed PCB’s from Jim’s Audio here: sx-Amplifier DSTHP Gold Flashed PCB Set If you are having problems wiring up…

Ovation e-Amp Modules

Ovation e-Amp: A 180 Watt Class AB VFA Featuring Ultra Low Distortion

February 2, 2014 · by Bonsai · in Power Amplifiers

The e-Amp is a 180 Watt RMS (very conservatively rated into 8 Ω ) fully balanced symmetrical (‘FBS’) amplifier featuring an emitter follower triple (EFT) bipolar output stage and beta enhanced VAS stage. The amplifier can be configured using jumpers…

Ovation 250

Ovation 250 Power Amplifier

January 15, 2014 · by Bonsai · in Power Amplifiers

The Ovation 250: A 250W per Channel Audio Power Amplifer (updated 1st June 2013) This amplifier was built in 2005/2006 and this write-up originally published in 2009. Introduction Diy Audio is a wonderful activity:-  if  you cannot  afford a $10 000  power…

UBx Universal JFET Buffer

January 7, 2013 · by Bonsai · in Pre Amplifiers

A while back, one of the diyAudio forum members who was building the nx-Amp (here’s the thread on DIYaudio.com) enquired about either reducing the amplifier’s overall gain, or providing a volume control facility. Since both the 15 W class A …

Noise in Current Sources and Current Mirrors

August 15, 2002 · by Bonsai · in Audio Design Library

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