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Why did my receiver lose volume on the right channel

Changed speaker wires an they are ok, Where can I get parts

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I will assume this right channel problem is present no-matter the chosen input....radio, CD, etc. "Changed speaker wires"...did you swap ONLY the wires from left channel to right or did you also swap speakers? Defective speaker woofers (wiring and/or crossover failures) leave only the tweeter to reproduce music in that speaker, which we perceive as both a huge volume and tonal reproduction difference compared to the "other" speaker. Keep up your "process of elimination" troubleshooting techniques as this will lead you to the problem.

Posted on Apr 01, 2015

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Posted on Jan 02, 2017

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1 Answer

Receiver channel volume not identical


Remote controls normally do not adjust stereo volume levels independently, and I will assume that the problem is present on ALL input settings (tuner, CD, etc.). Check "balance" control settings, speakers and speaker wires for possible problems. Balance control at 12:00? Inspecting speaker wires and speakers do not reveal problems? Have you swapped speakers to see if problem reverses? Try this "process of elimination" and hopefully you'll ID the problem.

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In dolby digital mode i can not get any voice volume. All other sounds are ok


Assuming that you mean Dolby digital 5.1, confirm that you have a center channel properly connected and perform the following;

Using the remote, enter the menu on the receiver and navigate to the selection labeled "LEVEL." Toggle through the selections until you reach the "CENTER CHANNEL". You will be able to use the remote to increase the volume of that channel in .5dB increments.

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I have an old Sansui 400 receiver. I get no sound from the left channel--both A and B speaker options. The speaker and wires are OK, because they work when hooked to the right channel contacts.


The problem seems to be the left transistor part of the unit. Try this:change A versus B speakers, asuming speaker A was working properly. If still speaker A, now connected to left output does not work, you will probably have transistor malfunction on the left channel of the receiver. Any electronic store will substitute the left transistors.
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1 Answer

Is there a wiring diagram for the nikkai EAPA450 Amp


Hi, if you still need a photocopy of instructions email me mail@srands.co.uk

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me mail@srands.co.uk

Dec 01, 2009 | Car Audio & Video

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Here you go buddy:
http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&externalId=C225335&fes=true&mdl=STRDE685

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if the cables are ok and the speaker are ok also beside good setting you will have a problem of the output stage in your receiver.

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Left Surround Channel


Try to tighten the screws at the back where you insert your A/V jacks.

Thanks!

Apr 10, 2008 | Onkyo TX-DS575 Receiver

1 Answer

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If under warrenty please return. This seems to be a internal problem with this device

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2 Answers

Loss of volume on left channel


Marantz SR 5200/6200 lost audio or crackling on left or right channel except in mode s-direct is now fixed !
The root cause is a defective inegrated circuit on DSP board (the one with digital inputs). To fix it change the chip CS4391 by a new one or better by the improved version CS4392. On my device a capacitor was cut close to this IC : replace one 1uF after changing the IC. For any question search me with my callsing "F5RCT"; i have a spare IC for the one who is able to change it !
I'm amateur radio and engineer

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