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No Left Output

Recently my Rotel amp only outputs from the right channel. Left channel is very quiet and grainy. I have took cover off and checked components, nothing obvious. Can anyone help?

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Check stereo settings after that if it still persists your left channel is goin out

Posted on May 22, 2009

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1 Answer

Left speakers do not work


As power amps are just two amps joined together all you need do is identify the left channel and compare it with the right. Ignore any parts common to both channels. The first thing to do is a visual check. If something looks broken burnt, or odd compared with the right channel then you have probably found the culprit. I suspect you could have a power output failure. It might be that the output devices are separate transistors. They might need to be replaced.
By the way just follow either the internal speaker leads or the connections to locate the right and left channels.

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1 Answer

Left channel suddenly gone quiet, left channel works perfectly.


Hi, firstly switch the output rcas over on your amp/mixer and see if the problem stays in the left channel or has now gone to the right. If it stays in the left it is a problem with your amp/mixer. If it moves to the right the problem is in the turntable. Likely causes for turntable problems are cartridge being damaged or stylus damage. If you have another cartridge try that. Cheers john

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Hi i trying to figure out how to wire up my rca's i have a pionner deck in on the back of it it has front output,rear output,sub output ,and also a audio output .now im trying to up it to a clarion eq that...


The "Front output" from the Pioneer deck would connect to the "Main In" on the Clarion EQ. I'm assuming that your Clarion EQ can only deal with one input, and will send the adjusted (equalized) signal out both of the outputs.
The "Front output" from the Clarion EQ should go to the "Front Input" on the 4 channel amp.
The "Rear output" from the Clarion EQ should go to the "Rear Input" on the 4 channel amp.
The "Sub output" from the Pioneer deck would connect to the Left/Right Input on the Epicenter. The Left/Right Output on the Epicenter would need a Y-splitter for each side, so that you could connect each amp separately. One suggestion would be to use one sub amp for both subs.

Feb 18, 2011 | Clarion Car Audio & Video

1 Answer

@I got a bose acoustmass 7 it has three inputs left right center,and three outputs left right center dont have paper work I need like a diagram or instructions on hooking it up please help.


you need to run the left speaker output from the amp to the left speaker input on the Bose, the right speaker output on the amp to the right speaker input on the Bose, the center channel output on the amp(assuming it has one), to the center channel input on the Bose...then the right output on the Bose , to the right Speaker..the Left output on the Bose to the left speaker...and finally the center channel output on the Bose to the center speaker

Jan 07, 2011 | Bose Acoustimass 5 III System

1 Answer

Amp won't power up,anymore! Even with new parts installed,removed


Hiya, dont have a diag either what you will have to try and is compare the left channel with the right. There will be 2 driver transistors (also likely on heatsink) close to the outputs. Check which driver drives which output on the left, then match it on the right. Those same drivers could very well also be a problem on the right as they often go with the outputs. There is a possibilty they have smoked again. See here to test FETS
http://www.4qdtec.com/mostest.html

Basically the left will match the right but not similar locations but definitely by track joins.

Also check the power resistors at the output. Often also go.

Hope that helps

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1 Answer

Help with my power amplifier


This sounds like there is a problem with the final output stage. Is this a new amp? Is it under warranty?

Dan

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1 Answer

No right channel output


Feed the amp with the left channel preamp to the right channel input on amp and check output. If you get output from amp then pre amp nedds to be checked out if still no output then amp is suspect. Randy

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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.

Jan 18, 2007 | Rotel RMB-1095 Power Amplifier

2 Answers

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if you say you checked the wireing ,did you check the speaker. disconnect on of the other speakers and connect up the center to see if you get sound. still no sound speakers bad. Got sound try unpluging unit for a couple of hours then try it again. still no center . Time for the repair shop. Good Luck

May 26, 2006 | Rotel RMB-1095 Power Amplifier

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