recommendations for mosfet output

rtill · 8th September 2009, 06:30 PM

http://i898.photobucket.com/albums/a...tputmosfet.jpg

anyone have a good driver section they'd be willing to share for this output section?
I have tried a few driver designs and the amp should be pushing 90-100 watts but it just isn't very loud.

nigelwright7557 · 8th September 2009, 08:34 PM

Quote:

Originally Posted by rtill

http://i898.photobucket.com/albums/a...tputmosfet.jpg

anyone have a good driver section they'd be willing to share for this output section?
I have tried a few driver designs and the amp should be pushing 90-100 watts but it just isn't very loud.

Thats a pretty poor circuit.
If the pot wiper comes undone the output transistors will be destroyed.

Why not just look for a good class AB MOSFET amplifier circuit ?

rtill · 8th September 2009, 08:40 PM

cuz I already have it built, would like to utilize it somehow. Any suggestions for a driver section? I am not looking for anything great, just suggestions to where it would be loud.

rtill · 9th September 2009, 01:42 PM

anyone?

AndrewT · 01:57 PM

save the bits you can and start again with a new and proper amplifier.

danzup · 02:52 PM

Quote:

Originally Posted by rtill

http://i898.photobucket.com/albums/a...tputmosfet.jpg

anyone have a good driver section they'd be willing to share for this output section?
I have tried a few driver designs and the amp should be pushing 90-100 watts but it just isn't very loud.

Use a SRPP with tube 6n2p (Russian tube) for driving this type of final amplifier.
Only this type of pre will drive correct .
Or an zen / pass preamp.
Have used this schematics for a hybrid amp .
( Output for 1 pair of SK1058/SJ162 only 25 W ... 45w depend on power source characteristics ! )

rtill · 9th September 2009, 03:48 PM

http://i898.photobucket.com/albums/a...tzenpreamp.gif

something like this?

8th September 2009, 06:30 PM	#1
rtill diyAudio Member Join Date: Sep 2006	recommendations for mosfet output http://i898.photobucket.com/albums/a...tputmosfet.jpg anyone have a good driver section they'd be willing to share for this output section? I have tried a few driver designs and the amp should be pushing 90-100 watts but it just isn't very loud.

9th September 2009, 01:55 PM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	save the bits you can and start again with a new and proper amplifier. __________________ regards Andrew T. Last edited by AndrewT; 9th September 2009 at 01:57 PM.

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8th September 2009, 08:40 PM	#3
rtill diyAudio Member Join Date: Sep 2006	cuz I already have it built, would like to utilize it somehow. Any suggestions for a driver section? I am not looking for anything great, just suggestions to where it would be loud.

9th September 2009, 01:42 PM	#4
rtill diyAudio Member Join Date: Sep 2006	anyone?

9th September 2009, 03:48 PM	#7
rtill diyAudio Member Join Date: Sep 2006	http://i898.photobucket.com/albums/a...tzenpreamp.gif something like this?

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