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PHASE LINEAR 400 SERIES TWO
PHASE LINEAR 400 SERIES TWO
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Old 25th August 2011, 08:23 AM   #1
east electronics is offline east electronics  Greece
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Default PHASE LINEAR 400 SERIES TWO

i am happy to have one of these for service ...

i was wondering if anyone knows who is the designer of this amplifier . Looking at the style of heatsinks that remind very much the Grandson from GAS ..

thanks
Sakis
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 25th August 2011, 09:00 AM   #2
poynton is offline poynton  United Kingdom
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The answer is in one of the threads on the forum.
I have most of them saved but could not find it in a quick look! Too busy at the moment !


Andy

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Old 25th August 2011, 09:12 AM   #3
east electronics is offline east electronics  Greece
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was too lasy to google it ..... but actually i did

the onlu true designer with six tons of inovation in each and every design !!!

BOB CARVER !!!
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 25th August 2011, 02:57 PM   #4
Tajzmaj is offline Tajzmaj  Slovenia
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I don't know what is wrong with your amp but if you need to replace outputs than match them......and adjust the idle again. If you need I have some information ......
At the end check it for oscillations and instabilities at clipping....maybe you will need to install some caps to reduce such things.....And finally. If you want to upgrade it be careful. For an example. you can expect some problems if input op amp is replaced with some other type.....
Feel free to ask. I have some experience with those ,,PL,, amps.
Best regards, Taj
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Old 25th August 2011, 03:00 PM   #5
east electronics is offline east electronics  Greece
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thanks Taj for your kind help ... dont worrie i have my way arround amplifiers ... if it comes need though i will let you know

thanks again
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 25th August 2011, 06:34 PM   #6
sregor is offline sregor  United States
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AFAIK the Phase Linear series two amps were built after Carver sold the company to Pioneer - So probably had some Pioneer engineers in the differences between the series two and earlier designs - Like full complimentary symmetry and Japanese outputs. Just my 2 cents.
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Old 25th August 2011, 07:00 PM   #7
east electronics is offline east electronics  Greece
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havent opened the unit yet but i will and let you know and post pictures
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 25th August 2011, 07:22 PM   #8
east electronics is offline east electronics  Greece
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ok ...this got to be some medium state unit it works with LF356 and outputs are xpl 909 driven by an RCA 66546

eventhough in the service manual are writen all available options like MJ15024 or 2SD555 ( very helpfull of them )

Good machine to play with i think ...
i wonder how happy this amp will be if opamps are replaced to something more modern ...

Nice weekend toy for me

kind regards sakis
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 25th August 2011, 07:44 PM   #9
east electronics is offline east electronics  Greece
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very playfull machine ...so easy to open and work on like i never seen before ... then again the service manual is also very informative ...
very very nice
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

Last edited by east electronics; 25th August 2011 at 07:59 PM.
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Old 25th August 2011, 08:20 PM   #10
tiefbassuebertr is offline tiefbassuebertr  Germany
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check out this threads:
A simple stereo Amp aroud a 2N3773
http://www.diyaudio.com/forums/solid...ear-400-a.html
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