Can't route effects to two channels of my mixer. If I plug into input 1 of my power amp, I have effects. If i plug into input 2 of my power amp, I get no effects. I tried both Crown and QSC power amps. Could it be a routing problem with my Lexicon?How do I fix it so effects will go to both channels?

Based on my research, the Yamaha PMH5000 mixer features two 1/4-inch "insert" jacks for connecting external effects processors, such as compressors or equalizers, to individual channels. These jacks are not intended for connecting external power amps.
However, the PMH5000 does have two "main out" jacks that can be used to send the mixed audio signal to external power amps. These are typically located on the back of the mixer and may be labeled as "L/R" or "Main Out."
When you connect an external power amp to the main out jacks, the signal is sent directly to the power amp and is not routed through the internal power amps of the mixer. The external power amp then amplifies the signal and sends it to the speakers.
It is important to note that when using external power amps, you should adjust the volume levels carefully to avoid damaging the speakers or the power amp.

First, plug it in. Next connect the speakers. Center all eq controls both master and channel. Turn off any reverb or effects. Turn the master volume 1/2 way up. Plug a sound source into channel 1 wiyj the channel volume all the way off. Turn on the amp. Slowly raise the channel volume until you heat output. If you get nothing, it's broken.

Line level output of the mixer would go into the line level inputs of the EQ, and the EQ line level outpputs to the line level inputs of the amplifier. If you are faced with a mix of unbalanced inputs or outputs, to balanced inputs or outputs it gets a little complicated because you need to matrix the balanced signal to unbalanced load and vice versa. There is no single answer to doing this either.

RCA jacks are unbalanced, 2 conductor 1/4 inch connections are unbalanced most of the time. XLR and 3 conductor 1/4 inch jacks and plugs can be either balanced or unbalanced.If either are wired so left and right are a single ring or tip on the 3 conductor 1/4 inch jack, it is unbalanced and they would share a common ground lead. XLR wired with one pin common with shield and right and left have a single conductor on the plug or jack, that is unbalanced.

Effects plug into mixer, mixer plugs into power amp. Others may want the mixer and the effects plugged into the power amp for the most available inputs. (when multiple inputs are available.)

Effects and mixer are a line level output and the mixer can be considered a line level input as well. A mic mixer has gain amplifiers for the inputs that are below line level such as unamplied microphones. It is possible to parse to absurdity, but the gist of it is above assuming you do not want to apply the same effects to everything all at once.

Should be an Aux 1 or 2 output jack on the right side of the mixer. You can come out of the 1 or 2 OUTPUT jack to the input on your processor, and then from the output of the processor to Effects return or to a channel input. By going to a channel input you can then blend the processor's signal with a slider into the sound system with the other channels, while adding tone if needed. By going back into the Effects return, you just blend it overall by adjusting the Effects return knob.
To feed the channels through the processor, turn the AUX 1 or 2 knob up on each individual channel you want to go through the processor. Make sure the AUX 1 (or 2 if you are using that) MASTER knob is turned up on the right side of the console, otherwise nothing will go to the processor. You should see the processors' input light showing signal, if not check your connections. Good luck

ok, first thing will be the effects processor. look for the "aux sends" output jacks near the bottom center of the rear panel. run a 1/4 inch instrument cable from "aux send" 3 out into the input on the vocal processor, and run another from aux 4, if the effects processor has 2 inputs. then, from the vocal processors output, run 1/4 inch cables back into the "stereo returns" on the mixer, (located on the rear panel on the bottom, extreme left) 2 outputs per input, since its making stereo effects. so, if you ran just send 3 into the processor, you should have a left and right return instrument cables into the mixer for "stereo return" 3 (left and right). if your processor has 2 imputs, and you are using both "aux send" 3 and 4, then you will have to have a pair of cables going to each "stereo return" for 3 & 4. -to apply effects to a microphone(s), you would adjust the individual aux send levels for each channel you want to have effects, and you would have to ensure that the master aux sends and returns are also turned up..

ok, the snake is simple, each xlr (3 prong mic) connector on the snake is labeled, so, just plug each xlr jack into the corresponding channel on the board, and plug the first 2 1/4 inch ends of the snake into the "C/R out balanced" outputs on the board, located on the rear panel, up and to the left a bit.

at the stage end of the snake, ues a 1/4 inch instrument cable to copnnect the first 2 1/4 inch jacks on the snake to the left and right inputs of the crossover. then, from the crossover, connect the sub power amp to the "low" stereo outputs of the crossover with instrument cables, and connect the main speakers amp to the "high" stereo outputs of the crossover with instrument cables. if its an adjustable corssover, you will want to have it crossed over somewhere about 80-120 hz to allow only the lowest frequencies to the subs.

now, from the amps to the speakers, we ane going to have to use heavier 12-14 gague SPEAKER CABLES, instead of light gague instrument cables. hook the subs up to the stereo speaker outs of the sub amp with speaker cables, and do the same for the main speakers.

just use the main left and right outputs of the behringer to run xlr (3 prong balanced) to 1/4 inch (looks like a big headphone plug) cables into the inputs of the crown amp. the mixer has the xlr outputs and the amp has 1/4 inch inputrs, sop the cables will have to reflect that on both ends. run the outputs of the amp (rca outputs, i believe, you may have to get a rca plug to 1/4 inch jack adapter, and then use a 1/4 inch speaker cable) to the inputs of the speakers, again, the amp has rca outputs and the speakers will likely have 1/4 inputs, so you will have to address that wil an adapter. have each speaker in its own channel.

I suspect one of the upfront IC amps has been damaged. This can happen if people power the mixer from a receptacle that is different from where other connected equipment is powered such as amp. For example, mixer is at one end of the hall and other inouts such as an output of a guitar amp is plugged in. If a ground fault or spike occurs, teh ground bounce can exceed the common mode voltage of the input amps.

In your case, the inpout amps are discrete transistor types.

A voltage surge into the inputs of your unit would LIKELY pop two bypass caps that are 330pf. For channel 2 these are C205 and C206. Check those for shorts.

VERIFY audio is available at the "send" (tip) of the channel insert connector... this verifies the preamp stage. You can PROBABLY plug a set of headphones in to check this... ONLY one side will have sound of course. Verify this is a good test by checking a working channel. The level will be quite low and we are looking for just some signal.

IF you do have signal on the channel insert send which is the "tip" of the channel insert with the trim turned up, let me know and I will check the schematic for the next thing to check farther down the line.

Each mic channel is MONO. You could use a 1/8 stereo splitter cable into two mic channels and then PAN them opposite to retain the stereo.

You can also use a splitter cable into the 1/4 inch stereo inputs on the mixer. The 1/8 inch plug must be a stereo plug that then splits to two RCA plugs or two 1/4 inch plugs.

Note that the manual specifies that the Tape/CD out is merely paralleled off the mains out. This means that your main fader controls the level to the CD/TAPE output... which may mean your main output has to be too loud to get adequate output from the CD/TAPE outs to be effective. This would require balancing the levels into your external amp better.

For dj use, industry standard would be something like a Pioneer DJM600 mixer. 4 channels w/ effects and a mic input. To use kaoss it's best to go into Send/Return input through the effects. By tapping on Send, all sound is sent out to the kaoss pad, and comes back into the mixer into the Return inputs. By doing this you can have the kaoss pad on sitting next to the mixer ready to apply effects all the time. Then connect the master outputs from mixer into your amp, or straight to powered speakers. Kaossilator is more of an instrument than effects unit, so plug in to channel 3 after your 2 cdjs in channel 1 and 2. You still have a spare channel left. I use 2 x 1200s and 2 x cdjs with kaoss pad through effects channel in this way. A 4 channel mixer is plenty.