![movie splitter combiner movie splitter combiner](https://www.thanksbuyer.com/image/cache/data/202104/68127/1618362189-4-750x750.jpg)
The output of the combiner should not be used if the circuit has to drive a long mic cable (over about 15 meters) unless you're willing to tolerate some high-frequency loss and to have the Beta 58a's upper resonance peaks (4.5 kHz and 9 kHz) pushed down into the mid-range. As drawn, the Rane combiner circuit (when driving a typical 1K input impedance mic preamp) will have an approximate 5.5 dB loss of level from each mic and will raise the effective output impedance of each to 1100 ohms. With the Beta 58a output Z of 150 ohms and its level of -51 dB (94dB SPL) before going through the combiner, using metal film resistors (instead of molded carbon) should help keep the added noise down a bit. Specifying 475 ohm 1 % resistors encourages the use of good quality metal film parts instead of the 470 ohm RETMA value which would result in using a plain old molded-carbon resistor. One thing to note, if anyone is interested in building one of these, is that Rane does specify the resistors as 475 ohm 1% as opposed to Crown's spec of 470 ohms. If you're going to represent the XLR connector schematic as a circle with 3-pins inside, why not orient the pins in their proper locations as does the Crown International schematic? That device will provide one "direct" mic feed-through (which allows a phantom powered mic to function}, and it also provides a transformer isolated output to a second input device, like a PA system. On the other hand, if you're actually looking for a real mic "splitter" - a device that will let you connect one mic to (2) inputs (like a recorder and a PA system) then take a look at the Whirlwind IMP Splitter 1X2. If that's what you're trying to do, a simple, basic powered mixer will work.
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If you use a hard wired "Y" cable, the keyboard line-level output will be fed into your mic and will probably destroy it! If you're trying to combine the output from a mic with the output from your keyboard to feed a PA system or a single track recorder, combining the signals in a simple "combiner" probably won't work because of the great difference in the signal levels (the keyboard is "line-level" and the mic is much, much weaker). Thank you all.It's not clear if you need a "splitter" or a "combiner". This we need to make a microphone for an accordion. I need to have two XLR inputs and one XLR output. I apologize if I put the topic on wrong place, this is my first post and I hope to get an answer to the question?Ĭan you give me a scheme of the splitter to the microphone. My name is Mladen and I am from Bosnia and I play keyboard and accordion.