mosfet choice

hihopes · 12th July 2007, 01:00 PM

I am replacing the mosfets in my hybrid power amp. The originals are 10n16 & 10p16 Exicons. I can replace them with the same mosfets, or with the 20p series (for about 2x the price) or buz900/905 for a little more than the 10n/p's. I would like to know whether there will be any sonic advantage in deviating from the originals? (I will not have the luxury of being able to match them.)

richie00boy · 12th July 2007, 01:23 PM

The 20 versions are double-die so have twice the capacitance. This may impact the sound but I doubt it.

As for the BUZ, I doubt very much you will notice any difference.

gbyleveldt · 12th July 2007, 01:40 PM

Those Hybrid amps are notoriously temperamental. I wouldn't put anything else in than the original.

AndrewT · 12th July 2007, 02:15 PM

Hi,
these are all laterals and from what I read all are based on the original Hitachi design, maybe even produced under licence.

Don't use the double unless you are prepared to debug any problems.

hihopes · 12th July 2007, 05:38 PM

Thanks for your input guys. It is much appreciated. Unless anyone has suggestions for a better choice, I will stick with the originals.

FastEddy · 12th July 2007, 06:47 PM

MOSFETs in Aussieland FYI:
http://www.altronics.com.au/index.as...&Submit=SEARCH
http://www.jaycar.com.au/productResu...p?FORM=KEYWORD
http://www.rockby.com.au/searchres.c...imageField.y=0

... and these guys used to have a nice little guide / cross reference web page for the power MOSFETs they use: http://www.aussieamplifiers.com/

Leolabs · 13th July 2007, 02:49 AM

Hitachi's LATFET???

hihopes · 13th July 2007, 06:20 PM

Thanks Fast Eddie. Checked out your links.

Hitachi's latfet? Can you be a bit more specific, Leolabs?

12th July 2007, 01:00 PM	#1
hihopes diyAudio Member Join Date: Sep 2004 Location: Cape Town	mosfet choice I am replacing the mosfets in my hybrid power amp. The originals are 10n16 & 10p16 Exicons. I can replace them with the same mosfets, or with the 20p series (for about 2x the price) or buz900/905 for a little more than the 10n/p's. I would like to know whether there will be any sonic advantage in deviating from the originals? (I will not have the luxury of being able to match them.)

12th July 2007, 01:23 PM	#2
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	The 20 versions are double-die so have twice the capacitance. This may impact the sound but I doubt it. As for the BUZ, I doubt very much you will notice any difference. __________________ www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, kits and more

12th July 2007, 01:40 PM	#3
gbyleveldt diyAudio Member Join Date: Jun 2006	Those Hybrid amps are notoriously temperamental. I wouldn't put anything else in than the original. __________________ The walls between art and engineering exist only in our minds - Theo Jansen

12th July 2007, 06:47 PM	#6
FastEddy diyAudio Member Join Date: Jun 2006 Location: North Californie	MOSFETs in Aussieland FYI: http://www.altronics.com.au/index.as...&Submit=SEARCH http://www.jaycar.com.au/productResu...p?FORM=KEYWORD http://www.rockby.com.au/searchres.c...imageField.y=0 ... and these guys used to have a nice little guide / cross reference web page for the power MOSFETs they use: http://www.aussieamplifiers.com/ __________________ Over compression is a problem with modern CD recordings

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12th July 2007, 02:15 PM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, these are all laterals and from what I read all are based on the original Hitachi design, maybe even produced under licence. Don't use the double unless you are prepared to debug any problems.

12th July 2007, 05:38 PM	#5
hihopes diyAudio Member Join Date: Sep 2004 Location: Cape Town	Thanks for your input guys. It is much appreciated. Unless anyone has suggestions for a better choice, I will stick with the originals.

13th July 2007, 02:49 AM	#7
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Hitachi's LATFET???

13th July 2007, 06:20 PM	#8
hihopes diyAudio Member Join Date: Sep 2004 Location: Cape Town	Thanks Fast Eddie. Checked out your links. Hitachi's latfet? Can you be a bit more specific, Leolabs?

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