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Old 17th September 2005, 02:27 PM   #1
rmihai is offline rmihai  Canada
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Default Elliott Sound MOSFET Power Amplifier

I am looking to build this project: http://sound.westhost.com/project101.htm

It seems to be exactlly what I need for my speakers.

Any experiences with it? Any opinions?

Please let me know. Any input HIGHLY aapreciated.

Thank you
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Old 17th September 2005, 02:48 PM   #2
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Did you search?

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More than enough opinions here I think...
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Old 17th September 2005, 03:15 PM   #3
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The P101 is the first DIY amp I built. I think it sounds absolutely beautiful. I have no problem recommending it to people and it goes together very nicely. Rod is very helpful when needed.

Blessings, Terry
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Old 17th September 2005, 05:11 PM   #4
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Hitachi no longer makes the Lateral MOSFETs used in the amplifier -- these are no manufactured by Renesas -- or you can use Exicons.
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Old 17th September 2005, 06:56 PM   #5
rmihai is offline rmihai  Canada
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I know Hitachi stoped manufacturing these latereal Mosfets. but I have a source from someone who bought large quantities more then 10 years ago.
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Old 17th September 2005, 08:40 PM   #6
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Old 17th September 2005, 09:25 PM   #7
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Quote:
Originally posted by jackinnj
Hitachi no longer makes the Lateral MOSFETs used in the amplifier -- these are no manufactured by Renesas -- or you can use Exicons.
Rod actually states in his contuction pages "The ECX10N16 and ECX10P16 or ECX10N20 / ECX10P20 (from Profusion PLC in the UK) are at least as good as the originals - they may even be slightly better."

So there's no problem with output devices.

regards
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Old 17th September 2005, 10:24 PM   #8
mandat is offline mandat  Poland
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What do you think about Holton's one?
Some time ago there was available schematic of Anthony Holton's MOSFET power amplifier at his homepage.
http://www.aussieamplifiers.com/
This amp scales perfectly up to 800W by paralleling the next complimentary MOSFET pairs.
P: 200W/8 Ohm & 400W/4 Ohm for eight pairs of IRFP240/IRFP9240
BWT: 4Hz - 56kHz (+/-3dB)
S/N unweighted: -122dB (20Hz - 20KHz)
S/N A weighted: -126dB (20Hz - 20KHz)
nominal Vin: 1.2V RMS (dla 200W/8ohm
THD: <0.07% (20Hz - 20kHz) (typ <0.005%)
DF: 200

You can see Holton's amp schematic here (post dated 22 Lip 2004, 10:05)
http://www.audiostereo.pl/forum_wpisy.html?temat=9991
If you are interested in receiving schematic of this amp&PCB, mail me.

You can change original transistors to BC550, BD911/912 and 5 pairs of 2SK1530/2SKJ201 you can get
P: 450W/4 Ohm or 300W/8 Ohm
BWT: +/- 3 dB 18 Hz - 72 kHz
+/- 1 dB 27 Hz - 53 kHz
S/N 92 dB
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Old 18th September 2005, 09:26 AM   #9
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" Stone age " amps...
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Old 18th September 2005, 09:48 AM   #10
PMA is offline PMA  Europe
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Upupa - how about this one?

http://web.telecom.cz/macura/tw_40.gif

Do not hesitate to click, it is a full version ..
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