Are mic splitters without phantom power protection just Y cables?

[canidoit]

I am referring to devices like Artcessories Splitcom, that prevents the phantom power from going on all connections.

If you were only using it to split mic level signal without phantom power from 1 mic to 2 different preamps, would you need the splitcom device or can you just use a Y cable?

When using a simple XLR Y cable, would each preamp settings of one affect the other preamp sound quality - ie. different impedance, gain, etc?

Thank you.

 

[MagnetoSound]

As always, it depends. In this case, it mostly depends on the input impedance at the preamp(s).

Splitting a 200-ohm mic into a pair of 10k preamps, the mic is not going to notice the difference. But gang a pair of 1200-ohm inputs together and the mic will definitely notice the 600-ohm total load. It will certainly affect frequency response and probably signal level too.

That’s why there are transformers (or active circuits) for such applications.

(The Splitcom claims galvanic isolation on the isolated output, which (to me) strongly suggests there is a transformer inside.)

 

[canidoit]

Thanks MagnetoSound. I was thinking of plugging a U87 into a Neve style and API preamp at the-same time to record one take for sound comparison.

Do you think that there will be a noticeable sound quality difference when comparing both Splitcom vs Radial Pro MS2 Mic Splitter which is more expensive or will it be negligible?

 

[MagnetoSound]

I should think using any professional splitter will be fine.

A Y-lead is to be avoided.

 

[pucho812]

can easily diy a mic splitter with a Jensen transformer or equivalent. I built a couple out of electrical j boxes. The punch outs were pretty good at fitting xlr mounts and switches. Good times.

 

[emrr]

What you propose to do is fine, it’s mainly about being on the same power/ground. You can only escape the effects of parallel loading by using an active splitter, but then you aren’t directly connected to at least one of preamps in terms of load.

 

[abbey road d enfer]

Any kind of passive mic splitter will result in increasing the load (decrease the impedance) the mic sees.
Transformer-based splitters actually increase the LF load, compared to a simple DC-blocking splitter. It or may not matter, depending on the mic.
Most active mics can happily drive lower impedance without changing the frequency response.
Dynamic and passive ribbon mics are more sensitive to loading.
Going back to the original question, there is no doubt that transformers are used in his ART product.

 

[MidnightArrakis]

I am referring to devices like Artcessories Splitcom, that prevents the phantom power from going on all connections.

If you were only using it to split mic level signal without phantom power from 1 mic to 2 different preamps, would you need the splitcom device or can you just use a Y cable?

When using a simple XLR Y cable, would each preamp settings of one affect the other preamp sound quality - ie. different impedance, gain, etc?

Thank you.

[pucho812: can easily diy a mic splitter with a Jensen transformer or equivalent] -- The image shown below is a 4U rack-panel "12-Channel Microphone Splitter" I had designed for a small Canadian audio company. Each channel is on its own little PCB which consists of --- 1 - Neutrik Female PCB-Mounted XLR Connector, 1 - JENSEN JT-MB-DPC (1:1:1) Mic-Splitter Transformer and 2 - Neutrik Male PCB-Mounted XLR Connectors. This all worked just fine and you could probably assemble this in an afternoon!!!



>> These are 3D CAD-Models I had created of the JENSEN "JT-MB-DPC" Microphone Splitter Transformer


>> Although everything about this mic-splitter system is relatively "simple" to do, it is still nonetheless quite costly to actually build, with the majority of the cost being in the transformers followed by the sheet-metal work and then the PCBs. Inquiries welcomed!!!

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