Question about Rotel Audio Players & Recorders

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Not playing in stereo

Im running a Rotel RC 850 and two Rotel RB 850's. I have it wired so one power amp runs the bass and the other the top end. It used to work ok and ive changed nothing. The ON/OFF-MONO tone knob would sometimes bring the stereo back if i switched it back and forth.

Posted by Mark Roberts on

  •  Mark Roberts
    Mark Roberts Oct 18, 2012

    Imput is from a Technics SL-PG560A. Speakers are Bi wired Accustic Energy AE109. When i say it was ok , i ment its not been used or dismantled but now has this fault. Ive rewired so each power amp so each amp runs each speaker and i get good sound from one speaker but only a very faint sound from the other speaker. I was thinking ive a problem with one of my power amps. Thanks for your imput David.

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1 Answer

greg degelman

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You have blowin a IC in it, Power amps are not suppose to be use for the purpose you were useing it for.You are dam lucky they didn,t go up in smoke.

Posted on Oct 22, 2012

  •  Mark Roberts
    Mark Roberts Oct 22, 2012

    absolute rubbish. A CD player going through a Rotel RC-850 and two Rotel RB-850's. With a pair of AE 109 speakers. WHY is this wrong????????

  • greg degelman
    greg degelman Oct 22, 2012

    Because i brought a adcom power amp from a guy last winter,End had had it hooked up the same way you had yours hook up.Where the IC for the left chanel was fried .End i am a retired Eletronic Technicain,After working at it for over 40 (Years) Idiot.)

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maaaartin

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SOURCE: I have no sound coming from my amp a rotel rb 981

it is never advised to change wires while the amp is switched on. you may have blown your diodes on your post amp then you have a problem.
have you tried other speakers tested your speaker on another system to rule them out as OK?
if you open the case be careful not to touch any large capacitor as they may still be chared and can give you a nasty belt.
any fuses should be easy to find and to see if they are blown. ensure you get the same rate fuse when you replace. if you see any charing of diodes then i think repair may be costly. good luck.

Posted on Nov 12, 2009

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Jack

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SOURCE: left channel doesnt produce sound as vu meter

Hi
from your description it looks like the switch causing this problem
replace the switch might solve this problem unless its cause some short on the main circuit
if you want to fix he Amp let me know

[email protected]

Jack

Posted on Oct 21, 2010

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No sound to remote speakers in dining & deck areas.


Incoming from WHAT? Ampifiers accept inputs via RCA connections and send amplified audio to the speakers via the + and - OUTPUT terminals.

I'm guessing your colored wires are from your speakers and that there is a piece of this puzzle we do not see - how the speakers on the deck and in the dining area are wired.

You say, "was working ok previously"... previous to WHAT? Something changed.

You can probably troubleshoot and resolve this yourself.

Set the amp to a medium output level.

If the wires are simply leading to either or both pairs of speakers you could select any two of them and connect them to one side of the amp. Only a pair going to the same speaker(s) will produce sound. Once you identify one pair, the other pair probably goes to the other speakers. Connect them to the other channel output.

The last piece would be to establish correct phasing between the speakers. Bass response will suffer if they're not IN-phase. Play something with substantial bass. Listen closely, then reverse the wires on one side only. Test again. If it IMPROVES you have it right. If it losses bass, put the wires back the way they were.

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Two more appear to be trade only: Charles Hyde and Son, and Wizard.
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if you open the case be careful not to touch any large capacitor as they may still be chared and can give you a nasty belt.
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