It's a standard connect for this style. mid way down horizontal holes with finger screw compression securing wires. Works great and allows for easy removal of banana plugs if changing to a application where they cant be used. Can be reused over and over allowing for non permant applications. .
The spacing of the plugs don't fit my Denon AVR-2113ci or AVR-3300 receivers. It does fit my Klipsch and M&K speakers, though. Even if the spacing did fit my Denon receivers, the side-fed wires would make the back of the receiver too crowded. After trying this and the other kind of plug where the wires go straight in the end of the plug rather than the side, the kind where the wires go straight in the end of the plug are harder to assemble but make a cleaner setup on the back of a receiver.
There are several on the market similar to these used mostly for automotive and home systems. In my case, I needed connectors that were not made as flimsy as most, considering the quality of metal used, density and temp resistance of the plastic, the gauge of wiring that could be used, and how tight the wires are held. I always trim to the least wire exposure and solder tinned before using. I use these because they seem to handle high current better than the more available cheapies, and these spreaders don’t fold under pressure causing a loose fit. My use is with dummy loads; a set and combination of 8 ohm high wattage resistors in a configuration that allows me to test amplifiers using 2, 4, and 8 ohm loads from a wattage selection of 300 to nearly 2000 watts RMS per channel. Even with a 300 Watt 8 ohm load, the resistors can get very hot which mean the audio current through these connectors is sustaining without metal weakening or getting hot. But when I step up to the 2400 watt RMS PA amps, the “current pass through” is easily sustained. I’ve burned some of the cheaper ones. The biggest plus of all is the price, beating every place I’ve shopped and that was many. I’m a retired Audio Tech and still at it. I’ve learned over the years; only settle for the best if you can get it, and if you can’t, make it. I’ll keep using and recommending these bananas until someone comes up with better ones, proves that they are, and maintains the price.
I've tried many styles of Banana Jacks some costing $10 each, these are the best ones out there, period. They handle 12 gauge wire with ease and no tools are required (small screw drivers are needed on most other styles). I usually buy a dozen at a time of Red and Black. The only draw back to these is their size - if space is tight they might be too large if equipment is in a tight case.
Perfect to use with my Onkyo receiver! I'm new to home theater systems, so after a little bit of experimenting I figured out the right way to connect the plugs to the speaker wire, and now they work perfectly.