Collection of Class B topologies <100mA Idle and Sound closest by Class A - Page 4

ontoaba · 2nd May 2011, 11:54 PM

Yes it is a secret, because it using different way to handle loudspeaker than currently available. Too soon to be shared.

The buffer is simple but waste more power than SE classA, not suitable for direct loudspeaker driving. I am using power gain with only 11nS small signal lagging. The other fascinating is power amplifier cost without power supply only ~$30 with 200W output and sounds better than SEclassA. The other pity is I am not sell it here

.

ontoaba · 3rd May 2011, 01:02 PM

Try with this for starting (see pict). Add some diode, resistors and some elco. Then, give both that SE, secret buffer each. They will sounds good and will more sounds good after secret buffer given. And more sounds good if it has good damper. But sadly still not as real as real sound.

tiefbassuebertr · 05:03 PM

I am still looking to Peavey's approach "low bias currents" (read post #25 and #26).
I have found this patent:
http://www.patentgenius.com/patent/6975172.html
http://www.pat2pdf.org/patents/pat6975172.pdf
but Peavey has earned more than 180 patents.

moschfet · 26th December 2011, 06:09 PM

I have a simple MOSFET amplifier from me, which runs in class-ac. The amplifiers sound absolutely excellent

I will improve the circuit and build something with bipolar.

Bemos - Eine verzerrungsarme Mosfetendstufe in class-B, Elektronik-Selbstbauprojekte - HIFI-FORUM

forr · 26th December 2011, 09:24 PM

Seems not to have been mentionned yet :

Audio Amplifier Circuit Design

tiefbassuebertr · 30th December 2011, 06:28 PM

Quote:

Originally Posted by forr

Seems not to have been mentionned yet :

Audio Amplifier Circuit Design

Yes.
there are follow thread arround this amp variant
MJR-7 Mosfet Amplifier of M. Renardson

tiefbassuebertr · 06:40 PM

Quote:

Originally Posted by moschfet

I have a simple MOSFET amplifier from me, which runs in class-ac. The amplifiers sound absolutely excellent

I will improve the circuit and build something with bipolar.

Bemos - Eine verzerrungsarme Mosfetendstufe in class-B, Elektronik-Selbstbauprojekte - HIFI-FORUM

Interesting project. I would like to know the diagrams of the gate currents from the output MOSFETs in case of normal operating mode (sine wave and square wave) and in case of clipping - both from LTspice and in real live.

What about the sonic differences between the topologies about
Poweramp with IRFP4668
and
http://www.diyaudio.com/forums/solid...n-2sk1058.html

tiefbassuebertr · 27th July 2012, 08:04 AM

Who knows more about the sonic character from the topology about follow URL ??
ultimate Fidility amp with new VAS.(breaking barriers <10ma Standby current)

2nd May 2011, 11:54 PM	#31
ontoaba diyAudio Member Join Date: Nov 2009 Location: Kudus, & Malang	Yes it is a secret, because it using different way to handle loudspeaker than currently available. Too soon to be shared. The buffer is simple but waste more power than SE classA, not suitable for direct loudspeaker driving. I am using power gain with only 11nS small signal lagging. The other fascinating is power amplifier cost without power supply only ~$30 with 200W output and sounds better than SEclassA. The other pity is I am not sell it here.

26th December 2011, 05:00 PM	#33
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	I am still looking to Peavey's approach "low bias currents" (read post #25 and #26). I have found this patent: http://www.patentgenius.com/patent/6975172.html http://www.pat2pdf.org/patents/pat6975172.pdf but Peavey has earned more than 180 patents. Last edited by tiefbassuebertr; 26th December 2011 at 05:03 PM.

26th December 2011, 06:09 PM	#34
moschfet diyAudio Member Join Date: Jul 2008 Location: Hannover	I have a simple MOSFET amplifier from me, which runs in class-ac. The amplifiers sound absolutely excellent I will improve the circuit and build something with bipolar. Bemos - Eine verzerrungsarme Mosfetendstufe in class-B, Elektronik-Selbstbauprojekte - HIFI-FORUM __________________ Regards http://xipix.de/

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
low crossover-distortion class AB output stage topologies	capslock	Solid State	72	10th May 2013 07:48 PM
Class A does sound better!	RobertS61	Pass Labs	42	29th September 2007 02:45 PM
The best sound on the class D	felixx	Class D	11	28th December 2006 10:07 PM
class B and AB idle current	demons_wing	Solid State	6	6th October 2004 05:14 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

26th December 2011, 09:24 PM	#35
forr diyAudio Member Join Date: Dec 2004 Location: Next door	Seems not to have been mentionned yet : Audio Amplifier Circuit Design

27th July 2012, 08:04 AM	#38
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	Who knows more about the sonic character from the topology about follow URL ?? ultimate Fidility amp with new VAS.(breaking barriers <10ma Standby current)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read