Question about Rotel Audio Players & Recorders

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Hello, I have a Rotel RA-840BX2 and would like to add a volume controlled line output for my powered sub. If you had a service manual for it could you identify where I can hook up into? I can handle the wiring and soldering. Thanks!

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If your powered subwoofer could accept speaker level input, like, say a Klipsch KSW-series, you wouldn't need it.

Posted on Mar 14, 2011

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Idealistic graphic equaliser model 31-9081


Connect your Denon outputs to the Realistic main inputs.
Connect your Realistic main out to the Rotel tuner in.

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Connect your tape 1 out puts to your Rotel cd inputs.

And you should be good to go.

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You need an hdmi switch (Either discrete IR or RS232 addressable for control) with more inputs than what you need now for future devices. It should have a digital or sub hdmi audio out. This output will go to a receiver input. Your receiver is now basically a sound bar, since only one input is being used.

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I cannot get equal volume on both channels. It snaps crackles,


If it's an old type control then you can spray it with Servisol switch cleaner. You might have to take the top cover off to get better access.

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1 Answer

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Hi,
I think RA 12 is not existing type, but RA 12xx types exist.
Please try this link, and I hope you will find the relevant documentation.
Good luck!
gylacz

Mar 18, 2013 | Audio Players & Recorders

1 Answer

I'm not sure how to hook up a powered sub woofer to my rx4109 reciever


It doesn't have a specific low-frequency or subwoofer output.

Depending on your unnamed subwoofer we may be able to work something out. Any sub should be able to work with a full-range Line Level feed.

If you use a Line Level input you won't have volume control of the sub through the receiver.

That would be available at either Tape Out or Aux Out. Just run an RCA pair (or combined to one male out if that's what the sub amp requires).

Whichever one you use, you won't be able to activate that function for listening as it would remove the input to the sub amp.

If your sub accepts speaker level High Level inputs you could drive it with speaker outputs and yoi WOULD have some volume control, assuming the sub had a way to match its initial volume to your other speakers.

Of course, the manual for your sub might explain some of this, too.

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My Rotel RA-931 integrated has an intermittent left channel. It occasionally cuts out or loses most of its volume. The key thing is this: if I crank the volume it'll suddenly come back and be okay for a...


This could be a bad solder joint, or dirt in the volume control. Try spraying the volume control with Servisol Video 40, available from electronic shops such as Maplin, or Radio Shack.

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Manual circuit diagram


I don't believe that Rotel service manuals are available outside of authorized service centers. Can you provide us with the problem that you have? Perhaps we can guide you through the repair.

Thanks,
Dan

Sep 20, 2009 | Rotel Audio Players & Recorders

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Rotel RA01 amp - volume control


Make sure you connected your record player in the right inputs. Better try it to a line level auxilliary input that is sure to pass the volume control. hope this helps..

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Problem with Rotel RA 870


Since it is a Rotel, it is a good unit and worth fixing. At this point, you need to take it to a good repair shop and let a qualified tech look at it. There are no user serviceable parts inside and if you go poking around in there, you WILL make the problem worse. Rotels' are nice units and represent a good value in stereo gear. Take it to a reputable repair shop that repairs Rotel under warranty. If thats not available to you, then a good repair shop should be able to get you going. Good luck...Rob

May 09, 2008 | Audio Players & Recorders

1 Answer

Rotel RA 9808X Amplifier


I'd suspect that one of the two output transistors on that channel has gone bad. If you are unsure how to test or troubleshoot this, then you might try replace both the NPN and PNP outputs and catch the bad one that way. If your amp uses an output module then you would of course have to replace the module which would replace all the output transistors on both channels. Good luck. Another thing to look out for, is the emitter bias resistors. They are the large white ceramic ones near the outputs. Sometimes one of those will open up too. They will be of a very small resistance value like .5 ohms (point five ohms) or something in that general ballpark, and have a wattage value of typicaly 5 watts. So they are pretty big resistors. Be sure to check them all even if you do find a bad output transistor. They will often go out with the transistor. Good luck.

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