Which is the same as the 19 mm spacing for power sockets on the wall here in the Netherlands and many other countries in Europe
Cheers
Pjotr said:
Which is the same as the 19 mm spacing for power sockets on the wall here in the Netherlands and many other countries in Europe
Cheers
cool, can I plug my 4mm bananas in it?
One of my famous audio designer buddies once built a line of amps with the spacing at 1.0", so that no one could use a standard binding post adaptor.
Yep, he did it on pupose because he hates them so much.
And to think, some of you guys think that I am the only "wise guy" in the business.......................[joke]
Jocko
Yep, he did it on pupose because he hates them so much.
And to think, some of you guys think that I am the only "wise guy" in the business.......................[joke]
Jocko
I'll go for 19mm (19.05 if I can) between the RCAs and the bananas.
With 5 pair of RCA, and 2 pair of bananas, that will be an elegant line 🙂
With 5 pair of RCA, and 2 pair of bananas, that will be an elegant line 🙂
Challenge
A very belated response based on my own investigation...however
I think the manufacturers common standard is 0.5" (1/2 inch).
I never found a commercial product with a 3/4 spacing.
I measured with a caliper different products and the norm is 13.5mm center to center. [0.531 or 17/32 inch].
However this is a point of aesthetics. What do you like to see?
Too close and obviously there will be difficulties plugging the cables in. Too wide and it might just look weird, although fully functional.
Get a bit of scrape 0.25 inch mdf/plywood and layout a template of different options to make your decision. I kind of like 9/16 or 5/8".
A very belated response based on my own investigation...however
I think the manufacturers common standard is 0.5" (1/2 inch).
I never found a commercial product with a 3/4 spacing.
I measured with a caliper different products and the norm is 13.5mm center to center. [0.531 or 17/32 inch].
However this is a point of aesthetics. What do you like to see?
Too close and obviously there will be difficulties plugging the cables in. Too wide and it might just look weird, although fully functional.
Get a bit of scrape 0.25 inch mdf/plywood and layout a template of different options to make your decision. I kind of like 9/16 or 5/8".
Wow, 11 years later. 😀
Actually Al, 3/4" is the standard for both. It doesn't matter as much with RCA's as they are usually independent but the ganged Banana plugs are all at 3/4".
Cheers.
EDIT: I have one piece of gear here where it doesn't apply. It's a very thin amp and the RCA spacing is 5/8" but that's the only piece I have like that. Everything else built since about 1980 is 3/4".
Actually Al, 3/4" is the standard for both. It doesn't matter as much with RCA's as they are usually independent but the ganged Banana plugs are all at 3/4".
Cheers.
EDIT: I have one piece of gear here where it doesn't apply. It's a very thin amp and the RCA spacing is 5/8" but that's the only piece I have like that. Everything else built since about 1980 is 3/4".
Not to mention the banana spacing for DMM's is also 3/4 as Cal Weldon mentioned about the ganged plugs...they fit perfect in my DMM's.
Well, Thank You Cal,
Just so I can differentiate between 'standards' as might be documented in some IEEE type spec and a 'defacto acceptability' can you point me to where the STANDARD is documented by some authority.
Thanks
Just so I can differentiate between 'standards' as might be documented in some IEEE type spec and a 'defacto acceptability' can you point me to where the STANDARD is documented by some authority.
Thanks
Any data sheet for RCA Phono Jack (dual or multiple) will have the same distance between them. Just as Mark pointed out with the dual banana plug's data sheet how the exact distance is .75".
If you use the standard dual 5-way binding posts, they require two 3/8" holes spaced 3/4" apart. That way you are set up to use wire leads, crimp-on fork connectors, separate banana plugs, or a dual banana plug for speaker connections.
RCA jacks aren't fussy about spacing - I use whatever spacing looks esthetically nice for the case in question. I place the plugs close together, though, to avoid having to split my RCA cables, as I usually use dual RCA cables rather than the singles. You want to get RCA jacks that have insulating bushings to isolate the signal return from the chassis. This lets you optimally ground your system in order to avoid the big hmmmmmmmm.
I haven't measured the RCA bushings to tell exactly what size hole to drill for those - I usually just drill a pilot hole and use a reamer or step drill until the bushing just drops into place. I recently bought a bunch of rear-mount RCA jacks from E-pay (cheap) that had no bushings, and was able to piece together some fiber washers and fiber shoulder washers so I could retrofit the jacks with the proper isolation bushings.
RCA jacks aren't fussy about spacing - I use whatever spacing looks esthetically nice for the case in question. I place the plugs close together, though, to avoid having to split my RCA cables, as I usually use dual RCA cables rather than the singles. You want to get RCA jacks that have insulating bushings to isolate the signal return from the chassis. This lets you optimally ground your system in order to avoid the big hmmmmmmmm.
I haven't measured the RCA bushings to tell exactly what size hole to drill for those - I usually just drill a pilot hole and use a reamer or step drill until the bushing just drops into place. I recently bought a bunch of rear-mount RCA jacks from E-pay (cheap) that had no bushings, and was able to piece together some fiber washers and fiber shoulder washers so I could retrofit the jacks with the proper isolation bushings.
As a final comment on this matter I thank everyone for their comments which collectively helps my understanding.
Unfortunately this thread has been split so please refer to both links for a full listing of all comments.
http://www.diyaudio.com/forums/parts/19489-there-standard-spacing-rca-banana-sockets.html
http://www.diyaudio.com/forums/part...spacing-rca-banana-sockets-2.html#post4096652
Much of the posting discusses BANANA type Plugs which has no relevance to RCA in this context. They have a different spec all together.
Subsequently I rechecked my findings previously stated and every manufacturers unit I checked does NOT have a spacing that will permit any type of 0.75 centre to centre male jumper block Banana or RCA.
This check was made on Sony, Pioneer, Toshiba & other main frames, various AV hardware & accessory units. The age of the units is over 30 years+ to current. (Pro-ject turntable and accessory boxes.).
Having said this I can accept that some units may adopt a 0.75 inch spacing. (KR-7070 Reciever for example.)
I also reviewed some RCA multi-block manufactures spec of which my sampling clearly shows that none of the dimensions meet the 0.75 spacing suggested. They are approx. 0.5 inch.
So my original claim that there is no SPEC for this layout stands. Its whatever the unit designer decides and if they buy a stock block they will get what the manufacturer decides.
In fact my original statement of 14mm or 0.55inch is supported in many manufactures drawings. (One of many attached). This seems a defacto standard.
http://www.mouser.com/catalog/specsheets/KC-301036.pdf
So with respect; I suggest that to state the 0.75" numbers in this thread as a 'general accepted specification' is unsubstantiated.
I hope others researching this subject will not get misled by what they read but take the info as fodder for thought.
Thank You
Over and OUT.
Unfortunately this thread has been split so please refer to both links for a full listing of all comments.
http://www.diyaudio.com/forums/parts/19489-there-standard-spacing-rca-banana-sockets.html
http://www.diyaudio.com/forums/part...spacing-rca-banana-sockets-2.html#post4096652
Much of the posting discusses BANANA type Plugs which has no relevance to RCA in this context. They have a different spec all together.
Subsequently I rechecked my findings previously stated and every manufacturers unit I checked does NOT have a spacing that will permit any type of 0.75 centre to centre male jumper block Banana or RCA.
This check was made on Sony, Pioneer, Toshiba & other main frames, various AV hardware & accessory units. The age of the units is over 30 years+ to current. (Pro-ject turntable and accessory boxes.).
Having said this I can accept that some units may adopt a 0.75 inch spacing. (KR-7070 Reciever for example.)
I also reviewed some RCA multi-block manufactures spec of which my sampling clearly shows that none of the dimensions meet the 0.75 spacing suggested. They are approx. 0.5 inch.
So my original claim that there is no SPEC for this layout stands. Its whatever the unit designer decides and if they buy a stock block they will get what the manufacturer decides.
In fact my original statement of 14mm or 0.55inch is supported in many manufactures drawings. (One of many attached). This seems a defacto standard.
http://www.mouser.com/catalog/specsheets/KC-301036.pdf
So with respect; I suggest that to state the 0.75" numbers in this thread as a 'general accepted specification' is unsubstantiated.
I hope others researching this subject will not get misled by what they read but take the info as fodder for thought.
Thank You
Over and OUT.
- Status
- Not open for further replies.