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rhr9
Starting Member
7 Posts |
 Posted - 2007/12/15 : 17:23:05
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Hi there ,
This is my first post in this section , and I want to
present my OTA using just one IRF150 per chanel ,working in class A.
Each chanel has its own power supply .
[URL=http://imageshack.us] [/URL]
[URL=http://imageshack.us] [/URL]
[URL=http://imageshack.us] [/URL]
[URL=http://imageshack.us] [/URL]
The initial topic is here :
http://www.diyaudio.com/forums/showthread.php?s=e2f493a586a0883010b6e2b8eb93b548&threadid=73598
Did anybody else build this amp ?
Best wishes !
@ + Philippe.
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Bernt Jansson
400.000-klubben
19763 Posts |
Posted - 2007/12/15 : 18:10:10
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| Nice work!!! How´s the sound? |
MVH Bernt Mitt system
"Det enda man kan vara praktiskt taget säker på är att en rak tonkurva alltid är fel." - Ingvar Öhman
Jobbar för Jorma Design och gillar bashorn
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rhr9
Starting Member
7 Posts |
Posted - 2007/12/15 : 18:28:54
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Hi Bernt ,
It sounds lovely on my FE208 Fostex Full range drivers ( 98 dB ) .
I am using a tube preamp to drive properly the OTA .
@ + Philippe. |
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Micke Y
100.000-klubben
7701 Posts |
Posted - 2007/12/15 : 21:17:52
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Very nice amplifier, very good with MY speakers  . What kind of effect do you get out of that transistor? Do you use feedback?
Michael |
When a man steals your wife, there is no better revenge than to let him keep her.
"Se inte ner på 3 ackord låtar, tänk hur många bra vi har gjort med bara 2" Billy Gibbons ZZ Top
Pälsar skall sitta på djur i skogen, inte på människor i stan. |
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ohmega
Member
4651 Posts |
Posted - 2007/12/16 : 07:12:42
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| Philippe: Wow..love it....built like a tank.. |
Medlem i klubbstugan SVAVEL - "Vi kör så det ryker"
Mitt Hifi-intresse är ingen prylhobby - det är en materialsport :) Anläggning: DVD-Denver + Naim Nait2 + Epos ES11 OCH FT-1600 MkII + 200 CD-skivor |
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CarlssonH
Skämtsam
1265 Posts |
Posted - 2007/12/16 : 10:04:22
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Is this a version of "The Monster" designed by Jean Hiraga?
Anyway, it really is a beauty |
A balanced diet is a cookie in each hand. |
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rhr9
Starting Member
7 Posts |
Posted - 2007/12/16 : 10:33:37
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Thanks for all your appreciations !
This amplifier doesn' t use any feedback . It has got a bias current of 3 Amp . The sound getting out of the IRF150 is very realistic , very dynamic , as if you could touch each instrument that you listen to .
It isn' t a version of Jean Hiraga's 8W Monster . I am going to build it also , on a battery version . On the Monster Amp , there are 8 transistors per chanel .
@ + Philippe.
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