I have lost output to one speaker but get both channels on headphone socket. Switching input wires has no effect but when I press mono button I get sound from both speakers.
This is only happening on Phono input everything else works ok.
Sugden A28 amplifier
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Re: loss of one channel to speaker
When you say switching input wires you mean your source? that you switch it? you only have switch problem, it is mechanical type swutch need to clean only, if still possible. i dont know if you can find replacement.
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First things first. Check the speaker connections and wire to be certain it is all good. Because if it is not then even when you get the missing channel going it will blow if the cables are faulty.
Next try a pair of headphones. If you can hear sound in both channels there is nothing wrong with the power amp. Instead it is the headphone socket, which is switching the channel off. You should replace the headphone socket if it is.
If the channel is still missing, then you must pull out the plug and look inside the unit. Either follow the missing channel back from the speaker socket or go straight to the heat sink. Look for damaged or burnt components. Remember the good channel's components are the same as the bad one. So compare the two. With the good channel as a guide to what they should look like.
If everything is connected correct, the only thing I can think of, is you don't put in a surround signal. If you only feed 2 way stereo, only two speaker will work. Also if you switch to stereo, the other channels will stop working. Check the cables, the settings and the input.
Some info from the manual: The Dolby Digital and DTS listening modes can only be selected if your Blu-ray Disc/DVD player is connected to
the AV receiver with a digital audio connection (coaxial,
optical, or HDMI).
• The listening modes you can select depends on the format of the input signal. To check the format, see "Displaying Source Information"
• While a pair of headphones is connected, you can select the following listening modes: Mono, Direct, and Stereo.
• While Speakers A and B are on, you can select only the
Direct, Stereo, Mono, or T-D (Theater-Dimensional) listening mode.
Plus this Bit of info on the speakers A and B buttons. While Speakers B is on, channels are reduced to 2.1 in the
If you can access the speaker configuration it should provide test tones to each speaker. If you can't the speaker A and B are not set right.
If you have pressed the stereo or mono button no sound will be heard except from the front two or the sub.
I'd need to know what mixer you have, to know if there is a [line out] connection socket and an [internal amp in] connection socket.
"each with own poweramp" I presume means the ep1500's and NOT that the speakers are active (ie containing amps)
***If any of your speakers are active, ask the question again, with more detail.***
So if all your speakers are passive, I offer the following.
I assume there is [effect send] and [effect return] on the mixer
effect send>quadraverb>effect return
mixer line out > eq > compressor > sonic maximizer > crossover
sub output of crossover> amp > sub
high output of crossover to mixer's internal amp input
mixer's speaker output > main speakers
monitor output > other side of eq (>other side of compressor if desired, but use sparingly ) > other side of sonic max if it is true stereo , otherwise skip > amp > monitors
If your mixer doesn't have an input to its internal amp, we are "back to the drawing board"
With questions like this it pays to give as much detail as possible; model and make of each component etc
I have done my best with the the info you have provided.
Don't feed amp outputs into powered speakers
Hello, As far as I examine this model on the web,I discover that your TV has the following features as:
Feature: Combination TV/VCR featuring 13-inch TV and 2-head mono VCR
Feature: Front AV input jacks for game system; 181-channel tuner for access to unscrambled cable broadcast
Feature: 1 video, 1 audio (mono) input in front; RF coaxial antenna input in back
Feature: Mono output and built-in speaker; headphone jack
This means that you do not have "A/V output" jack to complete your desire.. Sorry about it.. Take care and please Remember to rate/vote and give me 4 Thumbs Up for Helping out the Community :) Hope this helps!
There can be any number of reasons for this problem - solve it diagnostically by starting with something that you know is working and work through systematically to the other end.
Test a microphone on a separate amp to make sure it works okay. Check amp and speakers working. Check that all output cables from mixer to amp are working by testing separately.
Plug microphone into a channel on mixer. Also plug in headphones and turn headphone volume control up.
Make sure input sensitivity knob is turned up a bit (say half way) and main output faders (yellow) are up.
Check that channel is turned on (little button just above the channel fader- needs to be pressed down)
press pfl (pre-fade listen) button (next to button to switch channel on)- do you get any sound on main output or headphones or any indicator lights on mixer to show signal is getting that far (eitehr the individual channel metering lights or the main ones in the central section)?
turn off pfl - make sure channel fader (slider) is up - normal position is ) - about 3/4 of way up. Check lights again on individual channel and main output section - any signs?
Is the sub mix button for the channel pressed down - in which case you will need to bring sub mix (red) output faders up as well as main faders.
If you have got signs of signal on the individual channel but not main see if the channel has been routed somewhere odd (like a subgroup of channels).
Plug a working amp and speakers into one of the auxiliary outputs and use the relevant auxiliary send knob (on each channel just above the faders and pfl switches) to pan some signal to that auxiliary out - do you get anything? There is also a headphone socket for listening to the auxiliary channels (with a selector switch /knob to determine which one - make sure it is in the right position) try listening to the auxiliary output with headphones - anything? If yes the problem lies in the main output section.
Check that there is not a jack plug in the insert socket (to route signal through an external effects unit) without a matching return jack being plugged in - if appropriate is relevant effects unit switched on and correctly set up - if unsure remove the insert plug to take it out of the system.
Make sure any mute buttons are not switched in on main outputs.
Contrary to what's posted above, the Marshall MG series does not pass the speaker power output through the headphone jack, and inserting the headphones into the jack does not disable the speaker. The headphone amp is a separate circuit and it's input is taken before the master volume. So Jan's post is exactly right. Turn off the master volume and turn up all the other gain/volumes as high as they will go. The other issue is that the headphone jack's output does not drive low efficiency headphones well, so you need some headphones similar to Sony's MDR-V700s to hear it well. Earbuds just don't cut it.
apply a spray contact cleaner in headphone socket(the place where you put your headphone jack)-and insert the jack in and out many times because it maybe problem inside-check your speaker cable for good condition.and firmly connected.
setup of bridge mono mode:-1-turn your amplifier off.2-connect input wiring to channel(1) input--3-connect speaker across positive outputs terminals-do not use negative terminal when amplifier is operating in bridge mono mode.4-turn down (fully counter clockwise)of channel (2).