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Old 11th August 2014, 07:32 PM   #1
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Default Best RCA Socket

OK I know this is likely to raise a lot of flack from some people, but I am looking for serious replies please.

The RCA sockets (Neutrik's IIRC) on my PC3 are becoming a bit flaky in their connection with the plugs. (the usual loud BUZZZZZZZZZZZZZZZZZ as the hot lifts before the cold)

Any suggestions for replacements will be most welcome.
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Old 11th August 2014, 07:53 PM   #2
Marra is offline Marra  United Kingdom
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These are pretty good from Maplin.

Maplin Gold Teflon Insulated Chassis Phono Socket Red | Maplin

Hifi Collective stock a good range from standard to high end stuff if you want to spend big money.

Why unplug stuff whilst it's turned on?
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Old 11th August 2014, 08:24 PM   #3
DF96 is offline DF96  England
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I thought phono's (RCA to others) were designed to lift ground before signal? Hence, don't unplug while switched on. If you need hot swapping then don't use phono/RCA.
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Old 11th August 2014, 09:39 PM   #4
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Maybe he means the ground connection is loose while plugged in, not while removing the plug. The cure for that is to squeeze the plug's ground contacts closer to eliminate the gap and add more spring tension to the plug's ground contacts. The contact patches are probably corroded if they have been loose for a long time.

The Maplin type connectors are not a great design. Some jacks of that design are made in China, distributed in 100 different brands. Those are made of white metal, not brass, so they sound awful. The super glossy gold finish makes me suspect they are zinc casting, not brass. The threads will strip or the threads will break off if you tighten too much, which is just less than how tight you think they should be. The other problem with this design is that the ground tab is held against the jack or chassis by the nut, or by the lock spring washer, so it is not a very solid or soldered connection so ground impedance is not as low as it could be with a one piece brass or copper ground contact.

Switchcraft makes a good quality, low price brass jack with integrated ground lug, but their ground barrels are slightly undersize (-0.0005") so some plugs are loose unless tightened as above.

Vampire makes a good quality all brass RCA jack for reasonable price. They have higher price models, but the lowest price model is good quality. These are used in some famous high quality equipment brands.

The best RCA jack, imo, is WBT Nextgen. It has pure copper, single piece, minimal mass contacts, and no threads. Threads in the signal path are somehow bad, don't ask me why but several connector makers eschew threads in signal path.
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Old 11th August 2014, 11:16 PM   #5
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Instead of replacing the jacks/sockets, I suggest you try this plug:

NF2C-B/2 - Neutrik

It has a spring-loaded, retractable ground sleeve. When connecting, it makes ground before signal contact. When disconnecting, it breaks signal before ground.
I have been using these for over 10 years and highly recommend them.
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Old 12th August 2014, 12:12 AM   #6
cyteen is offline cyteen  England
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Click the image to open in full size.

These are quite nice and can be soldered before fitting to the chassis or removed from the chassis without desoldering.

Last edited by cyteen; 12th August 2014 at 12:16 AM.
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Old 12th August 2014, 08:49 AM   #7
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Quote:
Originally Posted by Richidoo View Post
Maybe he means the ground connection is loose while plugged in, not while removing the plug. The cure for that is to squeeze the plug's ground contacts closer to eliminate the gap and add more spring tension to the plug's ground contacts.
Thats exactly what I meant to say. Serves me right for posting when I am too tired to think.

Its certainly the sockets that are the problem. The plugs are already of good quality (Neutriks and Russ Andrews)

The Maplin's look very similar to those I have already. The Alluvial look good, and being able to put them through the case after soldering is great.
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Old 14th August 2014, 01:16 AM   #8
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Wbt is looking at the price, a good choice, though the chinese eight in a box seems nice als, but you don't have a lot of choice , i can't find in electronicstores only finf the cheap 2,5dollar once or wbt for a decent price or i have to watch in England or Germany. One problem with the wtb connection is that my screw on rcacable is very tight.
greets richard
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Old 15th August 2014, 01:22 PM   #9
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The WBT do look nice. A wee bit out of my price range though
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Old 30th August 2014, 09:16 AM   #10
xjr100 is offline xjr100  Europe
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Originally Posted by Mr Onion View Post
The WBT do look nice. A wee bit out of my price range though
DH-Labs CM-R1 RCA are really good - machined from solid copper and gold-plated with thick layer of gold

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
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