adjust VR 601 while monitoring voltage between TP1 and TP3 for 7 mv (millivolt ) reading for one chanel
adjust vr 602 while monitoring voltage between TP2 and TP4 for 7 mv ( millivolt ) reading for the other chanel
regards sakis ( information for the available service manual )
adjust vr 602 while monitoring voltage between TP2 and TP4 for 7 mv ( millivolt ) reading for the other chanel
regards sakis ( information for the available service manual )
Hi Sakis, wrong thread etc. but RA 1060 Rotel - similar? There's no urgency, its an old job never completed.
sure Ian ....what can i do for you ??? service manual or adjustment procedures ??
Wow, that was quick, quick service hehe.
It was the bias setting which I stupidly didn't check for before replacing output Txs.
I thought you may have had this one in the file for RB1080 too. thks
It was the bias setting which I stupidly didn't check for before replacing output Txs.
I thought you may have had this one in the file for RB1080 too. thks
well Ian its not the exact same thing ...see attachment please that is a part of the service manual ... ( e mail me i f you want it ) ( for the 1060 ...its not in the same file with 1080 works diferent )
kind regards sakis
kind regards sakis
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I think with those figures and warm-up note it should be fine thank you very much, Sakis. I had presumed 12mv and now I know better. Thank you too for the offer of manual details. Can I offer you a beer or would you like something better?
i am fine Ian thanks....i would be actually tempted to listen to it either way 5 or 12 mv and for sure it will run hotter with a bit nore bias ....
often if i service amps that are supposed to used from normal people and no party animals i try to keep that bias up ( up means to a reasonable up )
kind regards sakis
often if i service amps that are supposed to used from normal people and no party animals i try to keep that bias up ( up means to a reasonable up )
kind regards sakis
just been looking at the schematic of the 1080 and i ve seen that is a 200w very symmetric and inetersting amplifier but still doesnt use any vi limmiter for the output section nice approach for a hifi machine but not really safe for this ammount of power ...
if the power supply is good that design will easilly produce 200w at 8R and almost double at 4 ( even though specs say 300 and that is not really possible without any limmiting )
so either the supply is poor or the estimation is academic
still remains an interesting amplifier
if the power supply is good that design will easilly produce 200w at 8R and almost double at 4 ( even though specs say 300 and that is not really possible without any limmiting )
so either the supply is poor or the estimation is academic
still remains an interesting amplifier
Those amps rock and slamm. Was a former happy owner of two RB1090's driving an Infinity IRS Beta system. My friend bought a RB1080. Great amps. Saddly enough though my RB1090's turned out not to be so reliable. Both broke. My grandpa bought one, and his broke to later 🙁
With kind regards,
Bas
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