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 Post subject: RCA holes in chassis
PostPosted: April 25th, 2021, 9:12 am 
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Joined: July 17th, 2016, 6:24 am
Posts: 1099
I have two al chassis which need holes for mounting RCA jacks. Could not find a definitive answer about the hole dia online.

What’s the hole size? Best method to make the holes?


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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 9:47 am 
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Joined: July 8th, 2016, 4:34 pm
Posts: 570
Drill with one of these -

https://www.amazon.com/Irwin-Tools-Unib ... =hi&sr=1-6


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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 10:10 am 
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Joined: January 15th, 2015, 7:19 am
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Location: Baltimore MD
thats the best solution


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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 10:13 am 
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Joined: February 19th, 2017, 9:43 am
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Cogito wrote:
I have two al chassis which need holes for mounting RCA jacks. Could not find a definitive answer about the hole dia online.

What’s the hole size? Best method to make the holes?


It depends on the RCA connector, there is no standard mounting diameter.

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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 10:44 am 
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Joined: July 8th, 2016, 4:34 pm
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Also get a digital caliper to find the best size hole -

https://www.amazon.com/Illumifun-Measur ... 6107&psc=1


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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 11:02 am 
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brombo wrote:
Also get a digital caliper to find the best size hole -

https://www.amazon.com/Illumifun-Measur ... 6107&psc=1


Thanks.


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 Post subject: Re: RCA holes in chassis
PostPosted: April 25th, 2021, 11:03 am 
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Joined: July 24th, 2015, 4:17 pm
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Location: Parkville, Maryland
Cogito wrote:
I have two al chassis which need holes for mounting RCA jacks. Could not find a definitive answer about the hole dia online.

What’s the hole size? Best method to make the holes?

I found that after-market RCA jacks are all over the place when it comes to dimensions. Buy your jacks. Use calipers to find the diameter. A step drill bit provides a nice clean hole for the diameter needed.

Mark the step that best matches the RCA diameter. You'll get a nice clean hole that accepts your RCAs just like factory production.

https://www.amazon.com/Neiko-10193A-Tit ... 2097&psc=1

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 Post subject: Re: RCA holes in chassis
PostPosted: April 26th, 2021, 8:22 am 
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Joined: March 2nd, 2013, 2:43 pm
Posts: 216
Location: Potomac, MD
Even better, drill a somewhat undersize hole and file to correct size, and while you are at it make the hole the right shape to accommodate the various keying features that prevent an otherwise round jack from rotating in a round hole. Some jacks are flattened on one or two sides, and some have a distinct key protrusion.


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 Post subject: Re: RCA holes in chassis
PostPosted: April 26th, 2021, 8:38 am 
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Joined: July 24th, 2015, 4:17 pm
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Location: Parkville, Maryland
dberning wrote:
Even better, drill a somewhat undersize hole and file to correct size, and while you are at it make the hole the right shape to accommodate the various keying features that prevent an otherwise round jack from rotating in a round hole. Some jacks are flattened on one or two sides, and some have a distinct key protrusion.

I almost forgot. RCA jacks also come with isolating washers that require their own hole size so that the RCA jack is not tied (grounded) directly to the chassis itself if you wish the RCA to float above chassis ground so that it is grounded to the circuit only.

So you have two choices. Make the hole for the threaded jack itself -- or make the whole for the isolating washers.


Attachments:
RCA jack.jpg
RCA jack.jpg [ 5.92 KiB | Viewed 5781 times ]

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 Post subject: Re: RCA holes in chassis
PostPosted: April 26th, 2021, 10:55 am 
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Joined: February 28th, 2013, 3:31 pm
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I always use the insulating washer and then use a large buss wire to tie all the shells to the star ground in the equipment.


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