Shure 87a no sound

It's a condenser mic, so I suspect you aren't getting power to it. Make sure the phantom power is turned on on the mixer.

You posted this in questions about the Shure PG42 mic. That mic comes in two versions. There's the USB version which connects direct to a PC. Then there's the standard version which is used with a mixer. I presume you have the standard version as the Behringer doesn't have inputs for USB mics.

The standard version is a condenser mic. It needs power. The power is supplied by the mixer. It is known as phantom power because it travels up the mic cable from the mixer to the mic.

• Make sure your mixer has phantom power switched on.

• Use the correct mic cable: Either a 3 pin XLR to 3 pin XLR, or a 3 pin XLR to 3-pole jack (TRS). The leadis a balanced mic cable

• Check the setting on the mic for attenuation. 0dB is no reduction in signal level. 20dB is a large reduction

• Look at the Behringer's settings. Make sure you know what each control does and how it affects the sound. Pay particular attention to the effects send and return (FX SND RTN)

Most times there's an issue with no sound from a mic, it's usually down to a poor quality or broken cable; or no power; or the settings on the mixer.

Are you sure the xlry cable is balanced? there are balanced and unbalanced xlrs. For phantom to work, you need a balanced xlr cable.

Without more information of your speakers and amps we can't really help you. The Mackie board puts out line-level signals and that should drive any connected amp or powered speaker to the full capability. Make sure you are using BALANCED interconnect lines either XLR or TRS cables. Use of TS unbalanced cables costs you 6 DB and also noise pickup. Make sure ALL your gear, amps, speakers etc are powered from a SINGLE receptacle or power conditioning module. Normally you will use the AUX outputs of the mixer by way of TRS cables or balanced lines in a snake to power amplifiers onstage which then connect to the stage monitors. If you have powered monitors the returns of the aux to the stage go to the powered monitors. A heavy duty extension cord brings power back from thee stage power to the mixer.

Make sure you are using BALANCED interconnection cables to the speakers, either XLR or TRS connections. ALSO make sure all interconnected equipment such as the speakers AND the mixer are powered from the SAME receptacle at the venue... yes you have to run extension cords... the pro's do it so they don't have hum and other noise and don't damage their equipment.

Make sure you turn the Phantom power on the Mbox2 on as the Shure 87A requires it being a condenser mic.Make sure you use XLR mic cables. These are just things to check on.

Professional condensor type mikes require a phantom power source to work. That will be a balanced (read XLR) connection from source to preamp and the preamp must be capable of supplying the power. These units cannot be used in an unbalanced circuit (like 1/4" or computer mini-pin). Your best bet for the setup would be to get an external power supply box that can also convert the signal from balanced to unbalanced. That would be what the mike plugs into and then that plugs into the computer. You're probably looking at about 50-100 for even a cheap one that will work well. Companies like Sweetwater and B&H should be able to steer you toward a decent basic unit. If you happen to have a mixer (which is why you bought the good mike) then it may have phantom power for some of its mike inputs.

Possible cause...microphone dropped on the ground.

Or possibly the capsule is fried from too much spit getting to it thru the windscreen.

Or possibly a short in one of the 3 pins/wires located in the housing where the xlr connects.

Try using a mixing console with phantom power ( + 48 ). A condenser mic needs 48 volts to operate. The led should light when the XLR microphone cable is connected to a console with phantom power.

on what unit are you connecting the mics. mixer or directly to amp or powered mixer?