I couldn't use these with my Sony, Onkyo or Yamaha receivers or my speakers as a unit. I had to cut the bridge to make them singles in order to use. My new Yamaha surround receiver didn't recognize my speaker connections until I hard wired them on both sides. Sad experience.
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.
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.
The screw stops tightening at a certain distance. In my case, my wire strands were not significant enough to cause the screw to bind against the wire properly. So the wires pulled out of the plug with ease. If I had soddered my wire endings I think it would have worked fine.
Price was great. However, one of the banana plugs didn't work. It took about an hour to figure out, replacing cables, amplifiers, speakers. I've never seen an inert object such as a banana plug not work.
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April 9, 2017
Check your receiver speaker terminal spacing first.
I've never had a problem before with these banana plugs till I purchased an Onkyo TX-NR656. I expected/assumed that receiver speaker terminals were a standard distance between each other for the + and -. Not so with my new Onkyo, so check first before ordering as you may need to go to the singles for a lessor cost.
These were perfect for cleaning up the back of my Amp and I like to mess around back there all the time so it will be easy to remove and reinstall vs unscrewing the bare wires. Make sure you check that they fit by measuring but these fit my Denon AVR perfect.
PROS: Exactly what I wanted to clean up the back of my Amp too speaker connections at an amazing price!