Astonishing that
Yamaha don't include a diagram (or at least an explanation) on how to hook up effects. Look up "AUX send/return" and "Insert" (or something similar) in the Index of the manual - it's the Aux (send/returns) and the inserts that you will use to hook up effects. It surely mentions this somewhere in the manual.
You could download the Mackie 1604 manual (available free), which has clear diagrams on how effects are connected. Hookup for the
yamaha will be much the same - any mixer for that matter.
Reverb, for the most part, is used on an Aux buss: connect your reverb's output to the mixer's Aux return (this may be mono or stereo, but for now, use just a mono connection), and the mixer's Aux 1 send to the reverb's input.
In the case of mono connection, it's often the case that the Left channel is used (see your rev's instruction manual).
This should give you access to reverb on any of the 16 individual channels of your desk, via just the one reverb unit - turn up the Aux 1 knob on whichever channel you wish to add reverb to.
An channel's 'insert' point is for processing on that particular channel, like compression while tracking, using a Y-cable. Control is performed entirly on the effect unit itself, Aux controls are not used, of course. There's plenty of information on the 'ins and outs' of Y-cables and how they should be used, just do a search.
But I feel you are talkign about Aux related effects, such as reverb, in which case, try what I suggested above and see if it helps. Something to note: liek the Mackie, there may be gain controls on the mixer that govern send/return levels. If they are down, you won't get any Aux effect through. See that they are set halfway or so (the Mackie has an indent for this setting).
WHOOPS, you did say, EQ, sorry. Which could mean one of two things. Certainly an EQ will work on the stereo buss (stereo out) of the mixer, or if there is a 'main buss insert' point a la Mackie (consisting of a stereo pair of jacks) you might want to 'patch it in' just there.
Sorry for all the Mackie references, but I believe the Yamaha is along similar lines and therefore probably has a similar set of connections/controls. I may be wrong though!
