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Old 3rd March 2011, 08:51 AM   #1
cobipz is offline cobipz  Serbia
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Join Date: Feb 2010
Default ROTEL RA1070

Hi-f(r)iends !!!
I have a Rotel RA 1070 integrate amp for 5-6 years...
Maybe its time to upgrade???
Do someone have a sugestion or project that allready do this???
73
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Old 3rd March 2011, 09:57 AM   #2
Bone is offline Bone  United Kingdom
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Join Date: Jun 2004
Location: Dorset, UK
If you are satisfied with the sound it gives, keep it. 6 years is not a long time. Why fix it if it aint broke
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Old 3rd March 2011, 10:17 AM   #3
cobipz is offline cobipz  Serbia
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Join Date: Feb 2010
Maybe the sound will be beter
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Old 8th March 2011, 10:08 PM   #4
jbaric is offline jbaric  Croatia
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Join Date: Nov 2004
Location: Zagreb
RA-1070 is very similar to RA-985BX, but with extra user options (display, input settings, ...) . Preamp and power amp sections are probably 90% the same.

You can download SM here:

http://www.bwgroup-support.com/downl...A-985BX-TM.pdf

1070 and 985 are fantastic integrated amps to begin with, but you can upgrade them to be much better.

Stuff to do:

reduce global FB and increase local FB (input diff. degeneration, VAS degeneration)
remove unnecessary coupling caps (2 in series), leave only one cap at power amp input
upgrade all caps in power supply and local decoupling
......
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Old 9th March 2011, 09:20 AM   #5
cobipz is offline cobipz  Serbia
diyAudio Member
 
Join Date: Feb 2010
Quote:
Originally Posted by jbaric View Post
RA-1070 is very similar to RA-985BX, but with extra user options (display, input settings, ...) . Preamp and power amp sections are probably 90% the same.

You can download SM here:

http://www.bwgroup-support.com/downl...A-985BX-TM.pdf

1070 and 985 are fantastic integrated amps to begin with, but you can upgrade them to be much better.

Stuff to do:

reduce global FB and increase local FB (input diff. degeneration, VAS degeneration)
remove unnecessary coupling caps (2 in series), leave only one cap at power amp input
upgrade all caps in power supply and local decoupling
......
jel bi mogo po nashki da mi objasnis
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Old 9th March 2011, 02:28 PM   #6
jbaric is offline jbaric  Croatia
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Join Date: Nov 2004
Location: Zagreb
Quote:
Originally Posted by cobipz View Post
jel bi mogo po nashki da mi objasnis
Discussions on diyaudio on English only

I will contact you trough pm
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Old 10th March 2011, 09:29 AM   #7
cobipz is offline cobipz  Serbia
diyAudio Member
 
Join Date: Feb 2010
i vos only ask if the ansver for my quescion be on our serbo-croatian language...my english wrighting is so bad
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