XLR Caps - AVS Forum
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post #1 of 6 Old 07-07-2014, 08:22 PM - Thread Starter
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XLR Caps

Found this amusing:

Was reading about protective "XLR Caps" product manufactured by Vincent Audio.

Are their claims true?

So my several un-used XLR connections will potentially compromise performance of my AV pre-pro?

Description from Audio Advisor catalog listing (quote):
"Safeguard Your Unused XLR Inputs
The rear panel of an AV component is literally a backdoor for airborne EMI and RFI noise. These kinds of interference can sneak into your AV system through open, unused XLR inputs on your components, compromising performance. And unused XLR inputs are also susceptible to incursions by dirt and dust. And who wants to plug your gear into a dirty connection?

They Protect Without Shorting
So what’s the solution? Vincent Audio’s High-end Connection Caps fit over unused XLR inputs. Unlike traditional shorting plugs, these caps do not short the inputs, and many components don’t like shorted inputs. These durable, high-quality caps are made of gold-plated brass with a Teflon inlay.

XLR Connection Caps come two to a box, and oh, what a box it is. The attractive latching presentation case is practically worth the price all on its own.

Choose Female XLR Caps to protect male connections. Choose Male XLR Caps to protect female connections."

"Protect unused XLR inputs from airborne EMI and RFI noise
Help keep out dust and dirt
Non-shorting design
Choose Female XLR Caps to protect male connections
Choose Male XLR Caps to protect female connections.
Made of gold-plated brass with a Teflon inlay
Package of two
Beautiful latching presentation"

quantity of 02 Vincent XLR Caps = $24.99USD

What if I have like 10 or 16 unused XLR's? $124.95USD?

Are may folks using these?
Attached Images
File Type: jpg VincentAudio_XLRCaps_01.jpg (31.6 KB, 6 views)
File Type: jpg VincentAudio_XLRCaps_02.jpg (31.6 KB, 6 views)
File Type: jpg VincentAudio_XLRCaps_ProtectiveCase_01.jpg (31.1 KB, 6 views)

Last edited by WestCoastD; 07-07-2014 at 08:28 PM.
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post #2 of 6 Old 07-07-2014, 09:21 PM
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It would be really expensive to cap all the inputs on a high end AVR. Would it suffice to cap only the 50 analog input ports, or should I cap the optical ports too? And what about unused antenna ports

I hope only input ports let the evil in, because capping the unused speaker outputs could be a real challenge

The real problem would be the actual cables on unbalanced inputs that should act like an antenna. XLR cables are balanced and should not have that issue, but apparently without a connection on both ends of the XLR outputs and inputs, the XLR inputs are portal to the netherworlds of interference even though the channel is unused and no speaker is hooked to that amp channel. That crosstalk must be really insidious.

"But this one goes up to 11"
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post #3 of 6 Old 07-08-2014, 11:44 AM
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Another example of preying on the theoretical potential of something highly unlikely to be a problem in the real world.

A combination of poor design (e.g. very high crosstalk and poor EMI performance) and a location in a high-EMI field/noise environment (e.g. living next to a radio transmitter) might benefit from shorting the inputs. Assuming the problem is all at the inputs, of course.

I'd spend the money on music and movies.

YMMV - Don

"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley
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post #4 of 6 Old 07-08-2014, 01:51 PM
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What you really need to do is run $100 a foot michaeljhuman brand (TM) cables from the power generator to your amp.

Due to the high cost of running the cable from the power plant I suggest an in house audio quality generator. Call me for estimates

1-800-YOU-F00L

"But this one goes up to 11"
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post #5 of 6 Old 07-09-2014, 10:25 AM - Thread Starter
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what's more, these "caps" come in sets of 2. And each set comes packaged in it's own foam-cushioned mini-suitcase/carrying case. What happens when you need like 8 or 16 caps? (which is likely for most AVR owners) You end up with like 8 empty mini-suitcases

ie- point-being, seems like they could at least just package the stupid things in a small card-board box (like most things) and save cost's.........
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post #6 of 6 Old 07-09-2014, 08:24 PM
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Do that and the caps might get damaged by stray static shocks. You have to use the suitcases as they protect them against static destruction.

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