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I am replacing an Onkyo TX-SR606 with an Onkyo TX-NR575. On the TX-SR606 unit, I used these "dual" banana plugs (see photo), a single unit with both positive and negative connections on it. Unfortunately, these "dual" banana plugs don't fit into the terminals on the new TX-NR575. Hence, I have to buy new, single banana plugs that aren't joined together.

Are there two different sizes / widths of "dual" banana plugs? I thought these things were more or less universal.

banana plugs

Trevor Sullivan
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  • Banana plugs are always singles. Those dual plug bridges follow no standard. – Janka Sep 17 '18 at 23:47
  • Typical spacing is 0.75 inch, but that is more of a USA standard, not an international standard. European standards may be based on millimeters instead of mils. –  Sep 17 '18 at 23:50
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    By the way, all the gold cannot cover the poor quality of the prongs. A "real" banana plug has a rigid tip. – Janka Sep 17 '18 at 23:50
  • Thumbs up: https://i.pinimg.com/236x/59/f5/b0/59f5b018a840e9f9a9740e1dd12e0001--bananas-plugs.jpg – Janka Sep 17 '18 at 23:54
  • Thumbs down: https://i.pinimg.com/236x/f1/d2/da/f1d2da4a739653e941110d15341b1d2c.jpg – Janka Sep 17 '18 at 23:55
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    Or just cut the center insulator with a hacksaw or rotary tool. – DrMoishe Pippik Sep 18 '18 at 03:43
  • While not a "standard" by definition, most, if not all of the banana plug-equipped professional sound reinforcement amplifiers I have ever encountered here in the U.S. (which is a lot) have a plug spacing that allows use of dual bananas. De facto standard? –  Mar 09 '19 at 18:24
  • @Trevor: rather than "width" of connectors you mean "pitch" which implies a distance between centres (as in a chain, for example). – Transistor Mar 09 '19 at 20:41

1 Answers1

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They are more or less universal. The conventional pitch in test equipment is 0.75" or roughly 19 mm, and it looks about right from your image. I just checked all equipment in our lab and everything matches that, from every manufacturer, although I'm sure there are many exceptions. You can buy numerous adapters from and to banana plugs that has the same pitch.

Why Onkyo decided to deviate from this, I don't know. Perhaps the new engineers were not aware of there being a standard. It looks like they have stacked so many outputs horizontally that they had to put them further apart vertically so it would be possible to screw them out with the fingers.

pipe
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